Skocz do pozycji: 1.

Tytuł:

Electropolymerized polymer coatings for stainless steel

Autorzy:

Trzaskowska, P.
Piechna, M.
Ciach, T.

Powiązania:

https://bibliotekanauki.pl/articles/283988.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

polymers
stainless steel
electropolymerization

Źródło:

Engineering of Biomaterials; 2016, 19, 138; 98
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

The effect of surface modification on corrosion resistance of AISI 440B martensitic stainless steel

Autorzy:

Łępicka, M.
Grądzka-Dahlke, M.

Powiązania:

https://bibliotekanauki.pl/articles/284892.pdf

Data publikacji:

2014

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

martensitic stainless steel
surface
corrosion

Źródło:

Engineering of Biomaterials; 2014, 17, no. 128-129; 114-115 [wklejka]
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Evaluation of the differentiation of structural and physicochemical properties of orthodontic wires of AISI 304 stainless steel

Autorzy:

Grygier, D.
Hoppe, V.
Zięty, A.
Rutkowska-Gorczyca, M.

Powiązania:

https://bibliotekanauki.pl/articles/284164.pdf

Data publikacji:

2018

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

stainless steel
orthodontics wire
microstructure

Opis:

Wires used for orthodontic arches play a very important role in the process of orthodontic treatment. In combination with the lock attached to the tooth, they move and align the teeth along the set trajectories. Wires of stainless steel are commonly used in orthodontics for several reasons: they are characterised by high resistance to corrosion, high strength and elasticity, formability and a possibility of obtaining defined properties through cold working and annealing during production process. The purpose of the research presented in the work is the analysis of differences of the selected structural properties in the context of corrosion resistance of the orthodontic wire material. The object of the research was edge arches of the 0.016”x0.022” size made of the stainless steel type AISI 304, provided by two different producers: G&H Orthodontics and Adenta. The research methodology involved analysis of chemical and phase composition of the tested alloy, microscopic tests with application of the light and electron microscopy methods, as well as electrochemical direct current measurements. The research presented in the work has shown significant differences in structural and physical-chemical properties of the orthodontic wires made of AISI 304 type stainless steel. Despite the fact, that the tested arches were manufactured of the theoretically the same materials, but by different producers, they significantly differ in chemical composition, metallurgical purity, phase composition and corrosion resistance. In addition, it is worth noticing that the tested materials, in terms of structure, do not meet the normative requirements obligatory for biomaterials.

Źródło:

Engineering of Biomaterials; 2018, 21, 146; 8-13
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Corrosion Resistance, EIS and Wettability of the Implants Made of 316 LVM Steel Used in Chest Deformation Treatment

Autorzy:

Kajzer, A.
Kajzer, W.
Gołombek, K.
Knol, M.
Dzielicki, J.
Walke, W.

Powiązania:

https://bibliotekanauki.pl/articles/355260.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
corrosion resistance
wettability
plate

Opis:

The paper presents the influence of mechanical surface damage on the physicochemical properties of plates after implantation made of CrNiMo stainless steel, used in the treatment of anterior surface deformity of the chest. Analysis of the data allowed us to investigate the effect of implant design and condition of their surface on the results of chest deformation treatment. Results of electrochemical, impedance and surface wettability tests and SEM observations were compared with clinical observations. When removing the plates we found only slight inflammatory-periosteal reactions. On the basis of obtained results, it can be stated that plates, in spite of mechanical damage of the surface, were characterized by good corrosion resistance, a fact which is confirmed by the results of clinical evaluation.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 2A; 767-770
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Studies of stainless steel exposed to sandblasting

Autorzy:

Horodek, P.
Eseev, M. K.
Kobets, A. G.

Powiązania:

https://bibliotekanauki.pl/articles/147075.pdf

Data publikacji:

2015

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

stainless steel
sandblasting
defects
positron beam

Opis:

The influence of sandblasting on surface and subsurface of stainless steel is investigated using variable energy positron beam (VEP), positron annihilation spectroscopy (PAS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Samples of stainless steel were blasted using 110 μm particles of Al2O3 under different pressure and time duration. In the case of sandblasting for 90 s, the reduction of positron diffusion length depending on the applied pressure was observed. Sandblasting during 30 s leads only to the reduction of positron diffusion length to about 60 nm for all samples. Positron lifetimes close to 170 ps measured using positrons emitted directly from the source point to the presence of vacancies on the dislocation lines. SEM and AFM images show that surface roughness depends rather on pressure of sandblasting than time of exposition.

Źródło:

Nukleonika; 2015, 60, No. 4, part 1; 721-724
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Annealing behaviour of plastically deformed stainless steel 1.4307 studied by positron annihilation methods

Autorzy:

Dryzek, E.
Sarnek, M.
Siemek, K.

Powiązania:

https://bibliotekanauki.pl/articles/148014.pdf

Data publikacji:

2013

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

plastic deformation
positron annihilation
stainless steel

Opis:

Isochronal and isothermal annealing of stainless steel 1.4307 samples deformed by compression were investigated using Doppler broadening measurements of the annihilation line. We made an attempt to describe the obtained dependencies in terms of vacancy migration and sinking to the grain boundaries. The model assumed spherical grains with a homogeneous initial distribution of vacancies. The model was capable of following the isochronal annealing data quite accurately. However, the obtained activation energy of vacancy migration equal to 0.44 plus or minus 0.05 eV seemed too low. The isothermal annealing dependency was reproduced less precisely. The reason for this may be the presence of the alfa'-martensite particles in the samples, which can introduce additional defects seen by positrons in the temperature range in which the martensite reversion takes place.

Źródło:

Nukleonika; 2013, 58, 1; 215-219
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Bactericidal properties of Cu doped TiO2 films deposited on medical stainless steel

Autorzy:

Sobczyk-Guzenda, A.
Owczarek, S.
Jakubowski, W.
Jędrzejczak, A.
Gazicki-Lipman, M.
Szymanowski, H.

Powiązania:

https://bibliotekanauki.pl/articles/284706.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

stainless steel
RF PECVD technique
biomaterials

Źródło:

Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 75
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

The effect of alloying method on the structure and properties of sintered stainless steel

Autorzy:

Dudek, A.
Lisiecka, B.
Ulewicz, R.

Powiązania:

https://bibliotekanauki.pl/articles/351870.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sintered duplex stainless steel
chromium carbide

Opis:

Sintered duplex stainless steels (SDSSs) appear to be very interesting and promising materials that can be used in many industrial sectors. Ferrite improves material strength while austenite increases hardness and corrosion resistance. This study proposes a method to improve functional properties (e.g. hardness and wear resistance) by means of alloying the surface of the sintered duplex steel with Cr₃C₂ + 10% NiAl powder. The results of optical microscope metallography, SEM/EDX, XRD analysis and microhardness and wear resistance measurements are also presented. The surface alloying with Cr₃C₂ is a manufacturing method of surface layer hardening in sintered stainless steels and modification of surface layer properties such as hardness and coefficient of friction.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 1; 281-287
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Comparison of corrosion resistance in physiological saline solution of two austenitic stainless steels – 316LV and REX734

Autorzy:

Romańczuk, E.
Oksiuta, Z.

Powiązania:

https://bibliotekanauki.pl/articles/387266.pdf

Data publikacji:

2017

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

REX734 austenitic stainless steel
316 LV austenitic stainless steel
potentiodynamic corrosion tests
XRD analysis
SEM observation

Opis:

In this work two austenitic stainless steels, REX734 and 316LV were tested in terms of their microstructure and corrosion properties. The REX734 is a newer generation stainless steel, with modified chemical composition, in comparison to the 316LV grade. Potentiodynamic study of corrosion resistance was conducted in physiological saline solution (0.9% NaCl solution). In spite of the similarities of microstructure, grain size and phase structure in both materials, the corrosion tests revealed that the REX734, with lower nickel and higher nitrogen content, had better corrosion resistance than 316LV. Repassivation potential in the REX734 was almost six times higher than for the 316LV steel. Superior corrosion resistance of the REX734 steel was also confirmed by surface observations of both materials, since bigger and more densely distributed pits were detected in 316LV alloy.

Źródło:

Acta Mechanica et Automatica; 2017, 11, 2; 91-95
1898-4088
2300-5319

Pojawia się w:

Acta Mechanica et Automatica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 10.

Tytuł:

Investigation of Initial Wear Period of Differently Coated Carbide Cutting Tools

Autorzy:

Bartoszuk, M.
Grzesik, W.

Powiązania:

https://bibliotekanauki.pl/articles/99561.pdf

Data publikacji:

2015

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

orthogonal cutting
coatings
tool wear
stainless steel

Opis:

In this paper the results of experimental studies concerning the phenomenon of initial period of the wear of differently coated sintered carbide tools when dry orthogonal cutting of an AISI 321 austenitic stainless steel are presented. The motivation for this study results from the lack of technological guides concerning the optimal choice of coated cutting tools for machining of corrosion resistant austenitic stainless steels. A number of cutting tool inserts with the plane rake face made of a fine H10F sintered carbide substrate with specially deposited TiN, including TiCN, TiAlN, AlTiN and AlCrN single layers were used in wear tests. Both rake and flank faces of the cutting inserts were examined by optical and confocal microscopy after controlled tool wear. The possible wear mechanisms in terms of changes of the tool-chip contact were investigated.

Źródło:

Journal of Machine Engineering; 2015, 15, 4; 37-45
1895-7595
2391-8071

Pojawia się w:

Journal of Machine Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 11.

Tytuł:

The influence of treatment conditions on cutting forces and surface roughness

Autorzy:

Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/241665.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

turning dynamometer
surface roughness parameter
stainless steel

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of treatment conditions during turning of shafts on the cutting forces and surface roughness parameter. A roller made of S235JR steel was used for the research. The cutting process was carried out on a universal CDS 6250 BX-1000 and CU500MRD centre lathes. Measurement of cutting forces during lathing process used DKM 2010 and Kistler turning dynamometers. The turning process was conducted by a cutting tool with CCMT09T304 PF removable plate. During the turning, the following machining parameters were used: cutting speed Vc = 150 m/min, feed f=0.106 mm/rev and cutting depth ap = 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 mm. The surface roughness was measured by T8000 profilometer.

Źródło:

Journal of KONES; 2016, 23, 1; 207-213
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Finishing treatment of marine pump shafts made of X5CRNI18-10 steel

Autorzy:

Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/244602.pdf

Data publikacji:

2018

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

turning dynamometer
temperature
cutting forces
stainless steel

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of cutting parameters change on temperature and cutting forces during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathe. Measurement of cutting forces during lathing process used DKM 2010 turning dynamometer. The turning process was conducted by a cutting tool with CCET09T302R-MF insert by DIJET. During the turning, the following machining parameters were used: cutting speed Vc = 152, 219, 304 m/min, feed f = 0.044, 0.062, 0.083 mm/rev and cutting depth ap = 0.4, 0.8, 1.2, 1.6 mm. The view of the nose radius of cutting tool before and after the turning process was made by the Smartzoom 5 microscope.

Źródło:

Journal of KONES; 2018, 25, 2; 215-222
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 13.

Tytuł:

Corrosion Resistance of Some Stainless Steels in Chloride Solutions

Autorzy:

Kasprzyk, D.
Stypuła, B.

Powiązania:

https://bibliotekanauki.pl/articles/352719.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
chemical composition
corrosion
Ringer solution

Opis:

The present work compares corrosion behaviour of four types of S30403, S31603, S32615 austenitic and S32404 austeniticferritic stainless steels in chloride solutions (1%, 3% NaCl) and in Ringer solution, at 37°C temperature. Corrosion resistance was determined by potentiodynamic polarization measurements and a thirty day immersion test conducted in Ringer solution. The immersion test was performed in term of biomedical application. These alloy were spontaneously passivated in all electrolytes, wherein S30403, S31603 and S32404 undergo pitting corrosion. Only S32615 containing 5.5% Si shows resistance to pitting corrosion.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 2A; 711-714
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Geometry Characterization of AISI 430 Stainless Steel Microstructuring Using Laser

Autorzy:

Moldovan, Edit R.
Concheso Doria, Carlos
Ocaña Moreno, Jose Luis
Baltes, Liana Sanda
Stanciu, Elena Manuela
Croitoru, Catalin
Pascu, Alexandru
Tierean, Mircea Horia

Powiązania:

https://bibliotekanauki.pl/articles/2106590.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

microstructuring
laser
ferritic stainless steel
surface patterning

Opis:

Laser-generated surface patterns provide the means for local mechanical interlocking between the joined materials, tunes the wettability of surfaces that come in contact, and generally are the main factor for bonding strength enhancement, especially between dissimilar materials. This paper presents the influence of different patterning overlays generated with a pulsed laser on the surface of stainless-steel sheets. For all experiments, an overlapping degree of 90% has been chosen between three different patterns, while the engraving speed, pulse frequency and number of passes have varied. The textured surfaces’ morphology was assessed through optical microscopy, and the roughness of the surfaces was correlated with the corresponding experimental parameters. The results have indicated promising insights for joining stainless steel to plastic materials, which is otherwise difficult to assess through usual welding techniques.

Źródło:

Archives of Metallurgy and Materials; 2022, 67, 2; 645--652
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Improvement of the stainless steel electropolishing process by organic additives

Autorzy:

Lochynski, P.
Kowalski, M.
Szczygiel, B.
Kuczewski, K.

Powiązania:

https://bibliotekanauki.pl/articles/779206.pdf

Data publikacji:

2016

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

electropolishing
organic additives
surface roughness
stainless steel

Opis:

The influence of organic additives on the process of surface electropolishing of AISI 304 type steel was determined. Additives were selected in initial potentiodynamic tests pursuant to the plateau analysis on the current/potential curves. The assessment of the operational effectiveness of additives consisted in determining the relationship between surface gloss after electropolishing and the mass loss of the sample and in determining surface roughness. The applied electropolishing bath consisted of a mixture of concentrated acids: H₃PO₄  and H2SO₄ and the following organic additives were used: triethylamine, ethanolamine, diethanolamine, triethanolamine, diethylene glycol monobutyl ether and glycerol. The best electropolishing result, i.e. low roughness and high gloss of stainless steel surface with a relatively low mass loss of the sample at the same time were obtained for baths containing triethanolamine.

Źródło:

Polish Journal of Chemical Technology; 2016, 18, 4; 76-81
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Corrosion Reactivity in the Pre-Clinical Study of 316L and 321 Stainless Steel for Dentistry Applications

Autorzy:

Neaga, V.
Benea, Lidia

Powiązania:

https://bibliotekanauki.pl/articles/2048753.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

corrosion
electrochemical methods
stainless steel
human saliva

Opis:

Now, the use of any medical device based on metals or alloys, especially intended for dentistry applications, is impossible without preclinical evaluation of its anticorrosion properties. Today, the use of stainless steels with AISI standardization, with predilection 316L and 321, are preferred for ergonomic reasons due to their high operational reliability and optimal mechanical properties for functionality over time. In this regard, 316L and 321 stainless steels are tested for comparison in the solution that simulates human saliva with different pH. Stainless steel samples were subjected to corrosion in Fusayama-Meyer and Carter-Brugirard saliva. In-situ electrochemical measurements were applied, such as the open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). The results show that the corrosion resistance of 316L is superior to 321 in saliva solution at both pH values.

Źródło:

Archives of Metallurgy and Materials; 2022, 67, 1; 371-376
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

The influence of changing of cutting parameters on temperature and cutting forces during turning process of stainless steel with CCET09T302R-MF insert

Autorzy:

Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/243223.pdf

Data publikacji:

2017

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

turning dynamometer
temperature
cutting forces
stainless steel

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of change of cutting parameters on temperature and cutting forces during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathes. Measurement of cutting forces during lathing process used DKM 2010 turning dynamometer. The turning process was conducted by a cutting tool with CCET09T302R-MF insert by DIJET. During the turning, the following machining parameters were used: cutting speed Vc = 226 m/min, feed f = 0.044, 0.062, 0.083, 0.106 mm/rev and cutting depth ap = 0.25, 0.5, 0.75, 1.0 mm. The chemical composition of steel was measured by Solaris-ccd plus optical spectrometer.

Źródło:

Journal of KONES; 2017, 24, 4; 133-140
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

A Study on the Electrical Characteristics and Oxidation Resistance of the STS434L-High Chrome Powder Green Compact at the High-Temperature

Autorzy:

Park, J. W.
Jung, W. Y.
Park, D. K.
Ahn, I. S.

Powiązania:

https://bibliotekanauki.pl/articles/354543.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
fecraloy
oxidation resistance
metallic oxide

Opis:

Metallic oxide layer of heat resistant element contributes to the high-temperature oxidation resistance by delaying the oxidation, and also has positive effect on the electrical resistivity increase. In this study, the green compacts of Fe-Cr-Al powder mixed with STS434L were oxidized at 950°C up to 210 hrs in order to consider the effect of metal oxide on the oxidation and electrical resistance. It exhibited the low oxidation resistance in case of 434L only, however it increased as the amount of Fe-Cr-Al powder in the 434L compact. The higher electrical resistivity was observed at the Fe-Cr-Al compact with and 434L powder. The metal oxides of (Fe_0.6C_0.4)₂O₃, Cr₂O₃, and Fe₂O₃ contributed to the electrical resistivity, whereas Al₂O₂ took a role of oxidation resistance.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 1; 431-435
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Effect of intermetallic phases on corrosion behavior and mechanical properties of duplex stainless steel and super-duplex stainless steel

Autorzy:

Paulraj, P
Garg, R.

Powiązania:

https://bibliotekanauki.pl/articles/102625.pdf

Data publikacji:

2015

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

stainless steel
intermetallic phases
corrosion
mechanical properties
welding

Opis:

Duplex Stainless Steels (DSS) and Super Duplex Stainless Steel (SDSS) have excellent integration of mechanical and corrosion properties. However, the formation of intermetallic phases is a major problem in their usage. The mechanical and corrosion properties are deteriorated due to the presence of intermetallic phases. These phases are induced during welding, prolonged exposure to high temperatures, and improper heat treatments. The main emphasis of this review article is on intermetallic phases and their effects on corrosion and mechanical properties. First the effect of various alloying elements on DSS and SDSS has been discussed followed by formation of various intermetallic phases. The intermetallic phases affect impact toughness and corrosion resistance significantly. Their deleterious effect on weldments has also been reviewed.

Źródło:

Advances in Science and Technology. Research Journal; 2015, 9, 27; 87-105
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Influence of plastic deformation on electrochemical properties of X5CrNi18-10 steel

Autorzy:

Rejmer, Wojciech

Powiązania:

https://bibliotekanauki.pl/articles/1835573.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

corrosion
electrochemistry
stainless steel
impendance spectroscopy
Tafel plots

Opis:

The purpose of this study was to determine the effect of plastic deformation on the electrochemical properties of X5CrNi18-10 steel. The tested material belongs to the group of stainless steels with low carbon content, and it is used in many industries due to its high corrosion resistance. In most applications of the tested material, it is formed into complicated shapes and exposed to aggressive environments. Examples include the applications in medicine (implants) as well as in civil engineering and nuclear power plants. Different effects of deformation on anti-corrosion properties have been described in the literature. Samples with 5 different deformations were obtained in the present experiment. Electrochemical direct electrical current and alternating electrical current tests were performed for the obtained materials. The tests were carried out in a 1 molar sodium chloride solution. The study revealed an increase in the corrosion resistance of samples with increasing strain in the tested strain ranges.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2020, nr 23(3); 253-262
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Parylene N coating on stainless steel surface as a protective layer for metal implants

Autorzy:

Cieślik, M.

Powiązania:

https://bibliotekanauki.pl/articles/115495.pdf

Data publikacji:

2010

Wydawca:

Fundacja na Rzecz Młodych Naukowców

Tematy:

stainless steel
implantable material
polymer protective coating
parylene

Opis:

The protection properties of parylene coating on implant stainless steel 316L was investigated. The electrochemical measurements and metal ions release tests in Hanks solution revealed that the coating can be successfully used for corrosion protection. The addition of hydrogen peroxide, simulating the infl ammatory response of human body causes a decrease of protection properties of the coating. However, usage of parylene coating on stainless steel reduce iron ions release rates.

Źródło:

Challenges of Modern Technology; 2010, 1, 1; 23-26
2082-2863
2353-4419

Pojawia się w:

Challenges of Modern Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

The Influence of the Process Parameters on the Microstructure and Properties SLM Processed 316L Stainless Steel

Autorzy:

Woźniak, A.
Adamiak, M.
Chladek, G.
Kasperski, J.

Powiązania:

https://bibliotekanauki.pl/articles/351734.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

SLM
316L stainless steel
corrosion test
wettability

Opis:

Selective Laser Melting (SLM) is a modern manufacturing method with many applications in medicine, aerospace and auto-motive industries. SLM processed materials are characterized by good dimensional accuracy and properties comparable or superior to materials obtained by traditional processing methods. In this paper an SLM process was used to obtain 316L stainless steel parts. This paper presents the microstructure, chemical and phase composition, physicochemical and electrochemical properties of 12 groups of tested samples, differentiated by the SLM processing parameters. Based on the investigation, it can be inferred that the selection of the appropriate SLM parameters is very important to determined final material properties. The samples producedwith the energy density E = 600 J/mm³ were observed to possess optimum properties - a homogeneous structure, density closest to the desired one, good wettability and pitting corrosion resistance.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 1; 73-80
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Corrosion Resistance of X5CrNi18-10 Stainless Steel

Autorzy:

Kciuk, M.
Lasok, S.

Powiązania:

https://bibliotekanauki.pl/articles/352190.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

austenitic stainless steel
sensitization
corrosion resistance
potentiodynamic tests

Opis:

The paper presents the influence of heat treatment on the structure and corrosion resistance of X5CrNi18-10 steel. To determine the structure which has been obtained after heat treatment the methods of light and scanning electron microscopy with EDS microanalysis were used. The electrochemical corrosion properties of the investigated steel were studied in 3.5% NaCl solution using potentiodynamic polarization tests. Basing on the registered curves, the corrosion current, polarization resistance and corrosion potential were determined. The corrosion tests were followed by fractographic researches.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 4; 2101-2106
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Vacuum Brazing of Stainless Steel Depending on the Surface Preparation Method and Temperature of the Process

Autorzy:

Hebda, M.
Kaczor, P.
Miernik, K.

Powiązania:

https://bibliotekanauki.pl/articles/355707.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

vacuum brazing
stainless steel
surface preparation
brazing temperature

Opis:

This paper discusses issues related to optimising the technological parameters of the process of brazing gold in a vacuum furnace. An investigation of the brazing process was carried out for materials used in constructing components for aircraft engine fuel systems. The vacuum brazed material was AMS 5510 stainless steel (in the form of plates and pipes). AMS 4787 (BAu-4) was used as the brazing filler. In particular, the influence of the method of preparing the surface on solder spreading and the thickness of the diffusion zone were analysed. The best spreading of solder was obtained for nickel plated surfaces. When the sample surface was more rough or scratched, the effect of the spreading of solder was limited and the diffusion process of the solder into the base material became dominant. Moreover, the influence of the brazing temperature on microstructure changes and on interdiffusion of the AMS 5510 stainless steel/BAu-4 solder system was determined. It was observed that an increase in the brazing temperature modifies the morphology of the formed joint by forming a massive and rounded phase. Furthermore, an increase in the brazing temperature enhances the exchange of components.

Źródło:

Archives of Metallurgy and Materials; 2019, 64, 1; 5-11
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Effect of Delta Ferrite on the Mechanical Properties of Dissimilar Ferritic-Austenitic Stainless Steel Welds

Autorzy:

Ghasemi, R.
Beidokhti, B.
Fazel-Najafabadi, M.

Powiązania:

https://bibliotekanauki.pl/articles/353040.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
welding
delta ferrite
electron microscopy
austenite

Opis:

The dissimilar welds of AISI 304 to AISI 430 stainless steel was investigated by using gas tungsten arc welding. Three filler metals including ER309L, ER316L and ER2594 were applied. The weakest region of the welds was the heat affected zone of 430 stainless steel due to the formation of martensite. Also, the wide grain growth zone was observed in this side. The ferrite number for type 309L, 316L and 2594 weld metals was about 15, 32 and 57, respectively. The hardness and tensile strength values of the weld metals were higher than that of the heat affected zones and the base metals. The ferrite presented higher hardness values than the austenite in type 316L and 309L joints; while the hardness of austenite and ferrite was comparable in type 2594 weld metal.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 1; 437-443
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Alkaline leaching of zinc from argon oxygen decarbonization dust from stainless steel production

Autorzy:

Stefanova, A.
Aromaa, J.
Forsen, O.

Powiązania:

https://bibliotekanauki.pl/articles/110385.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

AOD dust
stainless steel
zinc
leaching
sodium hydroxide

Opis:

Stainless steel production generates solid wastes such as dust and sludge that are considered as harmful in most industrial countries. Today dusts are recycled in separate treatment plants as these dusts contain valuable metals such as alloying elements. A direct recycling of dust back to steel production is hindered due to the presence of elements, especially zinc, that cause operational difficulties in the stain-less steel making process. In this paper two different stainless steel converter argon oxygen decarboniza-tion dusts (AOD1 and AOD2), from Outokumpu Stainless (Tornio, Finland), were leached using NaOH solutions. The purpose was to selectively leach zinc out from the dusts and to find factors that affected most dissolution of zinc. The dust samples were leached under atmospheric pressure and the factors tested were temperature, sodium hydroxide concentration, liquid to solid ratio (L/S), stirring rate and oxygen or nitrogen gas bubbling. All the studied factors had statistically significant effect on the dissolution of zinc. The maximum zinc extraction was achieved at 95°C, with 8M NaOH solution, stirring rate of 400 rpm and L/S ratio of 30 and was around 80% for AOD1 dust and around 50% for AOD2 dust. Difference in maximum zinc extraction arose from the mineralogical differences of the dusts. Zinc was leached selec-tively. Among alloying elements only molybdenum was leached and practically no iron, chromium and nickel were dissolved.

Źródło:

Physicochemical Problems of Mineral Processing; 2013, 49, 1; 27-46
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Experimental study on the influence of burnish parameters on the surface roughness reduction index

Autorzy:

Polanowski, S.
Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/247016.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

burnishing process
surface roughness parameter
stainless steel elements

Opis:

The paper presents the research results of relationship between surface roughness reduction index KRa and three input parameters: burnishing speed Vn, feed fn and burnishing force Fn., and all combinations of levels of yields N measured for 48 points of experiment. The experiment was repeated 3 times. In order to select the model describing the results of tests, the stepping approximation analysis was performed. It relayed at incorporated into the model in following steps approximation elements function, giving the biggest decrease of the sum of squared deviations. The first approximation was based on the ternary monomial of the powers from 0 to 3 for each input value. This approximation aim was to show, that the index of surface roughness reduction does not depend on the burnishing speed in the made in the area of research. The reduced input parameters to two, i.e. fn and Fn. The plan of the experiment was brought to N = 12 and M = 12. The best approximation of test results obtained in the case of Laurent polynomial with stepping selection of elements. The biggest contribution to the decrease in the sum of squared deviations was element −1 ∙ 3 , and then fn 2. The article shows that in the range fn {0.6:1.2} there was not information on the successful model and the lack of influence of f and Fn on the results of the experiment. It is postulated to retry the experiment for the feed f <0.6.

Źródło:

Journal of KONES; 2016, 23, 3; 395-402
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Effect of microstructure on mechanical properties and corrosion resistance of 2205 duplex stainless steel

Autorzy:

Łabanowski, J.
Świerczyńska, A.
Topolska, S.

Powiązania:

https://bibliotekanauki.pl/articles/258492.pdf

Data publikacji:

2014

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

duplex stainless steel
stress corrosion cracking
microstructure
ageing

Opis:

This paper presents results of the research on impact of microstructure of austenitic-ferritic steel of duplex type on its mechanical properties and susceptibility to stress corrosion cracking. As showed, improper processing technologies more and more often used in shipbuilding industry for plates and other half-finished products made of duplex steel may cause significant lowering their properties, which frequently makes their replacing necessary. Results of the tests on stress corrosion under tension with low strain rate (SSRT) conducted in an inert and corrosion (boiling magnesium chloride) environment , are presented. It was proved that even minor structural transformations taking place in 500ºC ageing temperature lower corrosion resistance of the steel. Structural transformations occurring in 700ºC temperature to a smaller extent influence susceptibility to stress corrosion of the steel, however they cause drastic drop in its plasticity.

Źródło:

Polish Maritime Research; 2014, 4; 108-112
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Material Production and the Effect of the System on Biocompatibility in the Modified Metal Injection Method

Autorzy:

Çiçek, Bünyamin
Sun, Yavuz

Powiązania:

https://bibliotekanauki.pl/articles/2203740.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

metal injection molding
stainless steel
polymer
biomaterial
cytotoxicity

Opis:

In this study, the bio state of the alloy produced in the modified metal injection system was monitored after sintering. A new system operating with high gas pressure, far from the traditional injection model, has been established for material production. In this system, 316L stainless steel powders were molded using a PEG/PMMA/SA polymer recipe. During molding, approximately 60% 316L and 40% binder by volume were used. The samples obtained were sintered at different temperatures (1100-1300°C) after de-binding. Density measurement (Archimedes) and hardness tests (HV1) of the samples were measured as 6.74 g/cm3 and ~285 HV1, respectively. A potentiodynamic corrosion test was applied to monitor the effect of the amount of oxide in the structure of the 316L stainless steel produced. Corrosion tests were carried out in artificial body solutions. The corrosion rate was measured at the level of 17.08×10-3 mm/y. In terms of biocompatibility, a cytotoxicity test was applied to the samples and the life course of the bacteria was monitored. For the 316L alloys produced, the % vitality reached approximately 103%.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 1; 195--204
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Microstructure and Mechanical Properties of Joints of Titanium with Stainless Steel Performed using Nickel Filler

Autorzy:

Szwed, B.
Konieczny, M.

Powiązania:

https://bibliotekanauki.pl/articles/357024.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

diffusion brazing; titanium
stainless steel
microstructure
mechanical properties

Opis:

Diffusion brazing was performed between titanium (Grade 2) and stainless steel (X5CrNi18-10) using as a filler a nickel foil at the temperatures of 850, 900, 950 and 1000°C. The microstructure was investigated using light microscopy and scanning electron microscopy equipped with an energy dispersive X-ray system (EDS). The structure of the joints on the titanium side was composed of the eutectoid mixture αTi+Ti₂Ni and layers of intermetallic phases Ti₂Ni, TiNi and TiNi₃. The stainless steel-nickel interface is free from any reaction layer at 850°C, above this temperature thin layer of reaction appears. The microhardness measured across the joints reaches higher values than for titanium and stainless steel, and it achieves value from 260 to 446 HV. The highest shear strength (214 MPa) was achieved for joints brazed at 900°C.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 2B; 997-1001
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Acoustic Emission and Infrared Thermography Study of Low Strain Tensile Behaviour of AISI 304L Stainless Steel

Autorzy:

Sapietová, Alžbeta
Raček, Marek
Dekýš, Vladimir
Sapieta, Milan
Sága, Milan
Šofer, Pavel

Powiązania:

https://bibliotekanauki.pl/articles/27313863.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

acoustic emission
infrared thermography
stainless steel
tensile deformation

Opis:

In-situ study of deformation behaviour and mechanisms occurring during early stages of deformation is of a great practical importance. Low stacking fault energy materials, as is the case of AISI 304L, show non-linear deformation characteristics way below the bulk yield point. Shockley partial dislocations, formation of stacking faults respectively, resulting in creation of shear bands and ε-martensite transformation are the mechanisms occurring in the low strains in the studied steel. Acoustic emission and infrared thermography have been used in this study to investigate the deformation kinetics at the low strain stages of slow strain rate tensile tests. Acoustic emission cumulative energy together with the tracking of specimen maximum temperature have been found to be very useful in-situ techniques both supplementing each other in the sense of the sensitivity to different mechanisms. Mechanical, acoustic emission and infrared thermography results are discussed in detail with respect to potential occurred mechanism.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 2; 463--468
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Stainless steel bridges
Mosty ze stali nierdzewnej

Autorzy:

Kossakowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/402142.pdf

Data publikacji:

2016

Wydawca:

Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw

Tematy:

bridges
bridge structure
stainless steel
ferritic-austenitic duplex stainless steel
mosty
konstrukcja mostu
stal nierdzewna
stal ferrytyczno-austenityczna typu duplex

Opis:

The paper concerns problems of application of stainless steel as construction material in bridges. The characteristics and properties of stainless steel are discussed, taking into consideration its possibilities for using in bridge engineering. As an example, duplex Uranus 35N stainless steel, which is suitable for use in bridges, is presented. Some examples of bridges, which main structure is made of stainless steel are also shown.

Źródło:

Structure and Environment; 2016, 8, 1; 37-44
2081-1500

Pojawia się w:

Structure and Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Influence of Aging Time at 850°C on Microstructure and Corrosion Resistance of a Cold Rolled 2205 Duplex Stainless Steel

Autorzy:

Assumpção, Raphael França
Fortes Monteiro, Jessica C.
Campideli, Victor Cardoso
Santos, Dagoberto
Sicupira, Dalila C.

Powiązania:

https://bibliotekanauki.pl/articles/28099590.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

duplex stainless steel
aging
corrosion
secondary phases
self-healing

Opis:

The effect of aging time at 850°C for 300 s, 600 s, 1800 s, and 84600 s on the microstructural evolution and corrosion resistance of 2205 duplex stainless steel (DSS) was studied after cold rolling up to 60% of reduction. X-ray diffraction, scanning electron and transmission electron microscopy were used for microstructural characterization. The corrosion behavior was studied by cyclic potentiodynamic polarization (CPP) and electrochemical impedance technique (EIS) in 3.5% NaCl solution and the susceptibility to sensitization was investigated through the double loop electrochemical potentiodynamic reactivation (DL-EPR) test in 0.5 M H2SO4 + 0.1 M NaCl + 0.002 M KSCN solution. After cold working, increasing aging time led to an increase in sigma phase precipitation and a decrease in pitting corrosion resistance. However, the ultrafine microstructure had a beneficial influence on the self-healing effect in Cr and Mo depleted areas with the increasing of aging time, resulting in higher passivation ability. The DSS 2205 type was not susceptible to intergranular corrosion for the aged conditions applied.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 2; 681--688
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

The influence of cutting parameters on surface topography during turning marine pump shafts

Autorzy:

Labuda, Wojciech

Powiązania:

https://bibliotekanauki.pl/articles/241917.pdf

Data publikacji:

2019

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

finish turning process
surface topography
cutting parameters
stainless steel

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. Conventional turning machines belong to the basic equipment of ships, because in sea conditions, they enable the execution of a spare part or carrying out the necessary operations in the process of their regeneration. The use of modern cutting tools makes it possible to obtain a surface with low values of surface roughness parameters. The use of new generation cutting inserts on conventional lathes can cause problems for operators. The lack of the ability to ensure proper of treatment condition and setting errors of cutting tools contribute to the damage of the cutting insert or the surface of the workpiece. The article presents the results of influence of different cutting parameters on surface topography during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The cutting process was carried out on a universal TUM 25B x 500 centre lathes. During the turning the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev] and depth of cut ap [mm].The turning process was conducted by a cutting tool with CCGT 09T302 UM, CCGT 09T304 UM and CCGT 09T308 UM inserts. Measurement of surface topography was carried out by T8000 profilometer.

Źródło:

Journal of KONES; 2019, 26, 4; 141-148
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Changes of stainless steels surface morphology as a result of interaction with intense pulsed plasma beams containing ions of rare earth elements

Autorzy:

Sartowska, B.
Piekoszewski, J.
Waliś, L.
Składnik-Sadowska, E.
Barlak, M.

Powiązania:

https://bibliotekanauki.pl/articles/146323.pdf

Data publikacji:

2008

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

intense plasma pulses
stainless steel
surface modification
REE addition

Opis:

Among different methods used in surface engineering such as CVD, PVD, ion implantation etc., the techniques using high intensity ion or plasma beams are relatively new ones. The results reported thus far show that the treatment of steel surface with high intensity plasma pulses can lead to changes of its morphology and mechanical properties. Stainless steels have very good corrosion resistance, but they have low hardness and poor tribological properties. The intense pulsed plasma beams were used for modification of alloyed steels especially austenitic (1.4301 and 1.4401) and ferritic (1.4016) stainless steels with various content of alloying elements. Samples were irradiated with 2, 5 or 10 short (μs scale) intense (density of energy was about 5 J/cm2) pulses. Heating and cooling processes were of non-equilibrium type. In all samples the near surface layer of the thickness in μm range was melted and simultaneously doped with cerium and lanthanum. The aim of this work was to investigate the changes of stainless steel surface morphology after melting, rare earth elements (REE) addition and rapid solidification after interaction with intense pulsed plasma beams. The surface morphology was analyzed using a scanning electron microscopy (SEM) technique. Changes of surface roughness were determined by profilometric measurements. The efficiency of REE addition process was also determined.

Źródło:

Nukleonika; 2008, 53, suppl. 2; 43-48
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Corrosion of AISI 304L (EN 1.4307) stainless steel in animal slurry
Korozja stali AISI 304L (EN 1.4307) w gnojowicy

Autorzy:

Rokosz, K.
Chojnacki, J.
Hryniewicz, T.
Zbytek, Z.

Powiązania:

https://bibliotekanauki.pl/articles/337559.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych

Tematy:

corrosion
stainless steel
animal slurry
korozja
stal
odporność
gnojowica

Opis:

The stainless steels are used to build parts of machinery for agriculture. These components should have adequate corrosion resistance because they contact with aggressive environments, such as natural and artificial fertilizers, or e.g. during the biogas production. In such environments austenitic AISI 304L (EN 1.4301) and AISI 316L (EN 1.4571) stainless steels are mostly used. In the available literature authors found no information on the corrosion potentiodynamic tests in manure. That was the reason to undertake the studies on one of the austenitic stainless steels to perform corrosion tests in the environment of animal slurry. The article presents the analysis of general and pitting corrosion of AISI 304L (EN 1.4307) steel in the environment which is the cattle slurry. Potentiodynamic measurements were made on the potentiostat ATLAS 98 with a scan rate of 0.1 mV∙s-1 in the anodic direction and with scan rate of 1 mV∙s-1 in the return cathodic direction. The measurement was started in the anodic direction from potential of minus 600 mV against the saturated calomel electrode (SCE) to achieve a current density of 1000 μA∙cm-2. After that the cathodic scan was done back to the potential of -600 mV vs. SCE. The general corrosion in animal slurry is higher than in 3% water solution of sodium chloride. The corrosion potential measured in the animal slurry was equal to -525 mV vs. SCE. That clearly indicates a higher tendency to general corrosion in comparison with the results obtained in 3% sodium chloride solution (-200 mV vs. SCE). The passive current density ratio measured in the animal slurry to that one in 3% NaCl aqueous solution is equal approximately 8.5.
Maszyny oraz urządzenia używane w rolnictwie budowane są najczęściej z elementów stalowych. Takie komponenty są narażone na korozję ze względu na to, że pracują w środowiskach korozyjnie agresywnych, takich jak nawozy sztuczne, czy też naturalne, jak i w produkcji biogazu. Najczęściej używanymi austenitycznymi stalami stopowymi są AISI 304 (EN 1.4301) oraz AISI 316Ti (EN 1.4571). W dostępnej literaturze autorzy nie znaleźli informacji na temat badań potencjodynamicznych w gnojowicy, czego wynikiem jest przedstawione opracowanie. W artykule przedstawiono analizę korozji ogólnej i wżerowej stali AISI 304L (EN 1.4307) w środowisku jakim jest gnojowica bydlęca. Pomiary polaryzacyjne wykonano na potencjostacie ATLAS 98 z szybkością skanowania 0.1 m V∙s-1 w kierunku anodowym oraz 1 m V∙s-1 w przypadku skanu powrotnego w kierunku katodowym. Pomiar rozpoczęto w kierunku anodowym od potencjału -600 mV względem nasyconej elektrody kalomelowej (NEK) do osiągnięcia gęstości prądu 1000 μA∙cm-2, po czym następował pomiar w stronę katodową do potencjału -600 mV względem NEK. Jako elektrody prądowej użyto elektrodę platynową EPtP-301 oraz elektrody odniesienia NEK: EK 101 (0,244 V w temperaturze 25°C). Pomiary SEM/EDX przeprowadzono w Hochschule Wismar (Niemcy) na FEI Quanta 250 FEG z EDS-System NS7 oraz QuasOr EBSD-System. Chropowatość powierzchni oraz wżery były przedmiotem studiów na Taylor-Hobson Precision Talysurf CCI 6000 w Katedrze Mechaniki Precyzyjnej na Wydziale Mechanicznym Politechniki Koszalińskiej. Wyniki wykazały, że gnojowica bydlęca jest środowiskiem bardziej agresywnym niż 3% wodny roztwór chlorku sodu ze względu na potencjał korozji oraz prąd pasywacji. Potencjał korozji stali AISI 304L (EN 1.4307) w gnojowicy wskazywał na większą tendencję powierzchni do korozji (Ecorr = -525 mV vs. NEK) niż w 3% wodnym roztworze NaCl (Ecorr = -200 mV vs. NEK). Różnice są również widoczne w prądach pasywacji dla Ecorr = 0 mV vs. NEK. Stosunek prądu pasywacji w gnojowicy do tego w 3% NaCl wynosi około 8,5. W przypadku korozji wżerowej zauważono odwrotną sytuację, to znaczy lepszą odporność na korozję wżerową w gnojowicy niż w roztworze 3% NaCl. Można to wstępnie tłumaczyć zaklejeniem powierzchni stali przez cząstki stałe gnojowicy, co będzie również podstawą dalszych badań.

Źródło:

Journal of Research and Applications in Agricultural Engineering; 2014, 59, 1; 104-108
1642-686X
2719-423X

Pojawia się w:

Journal of Research and Applications in Agricultural Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Geometrical structure of surface after turning of 316L stainless steel in laser assisted conditions

Autorzy:

Szymański, Michał
Kukliński, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/94122.pdf

Data publikacji:

2019

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

surface roughness measurement
316L stainless steel
turning
LAM

Opis:

The effects of turning 316L steel in a laser assisted machining are presented in this paper. The properties of 316L stainless steel are also shown in this article. In order to show correlation between the technological parameters, microgeometry of cutting tools and geometrical structure of surface, turning of material in grade 316L supported by laser has been executed. In addition, optical examination of cutting inserts has been performed and geometrical measurements of machined surfaces have been taken. The results of researches on the effects of the technological parameters and cutting tool's microgeometry on the geometrical structure of the 316L steel surface after turning in LAM conditions are described.

Źródło:

Archives of Mechanical Technology and Materials; 2019, 39; 66-73
2450-9469

Pojawia się w:

Archives of Mechanical Technology and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Fabrication of Metal Gas Filter by Material Extrusion Additive Manufacturing Process

Autorzy:

Yi, Yu-Jeong
Lee, Min-Jeong
Yun, Su-Jin
Park, Manho
Kim, Ju-Yong
Lee, Jungwoo
Yun, Jung-Yeul

Powiązania:

https://bibliotekanauki.pl/articles/2174560.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

gas filter
additive manufacturing
stainless steel
porosity
powder size

Opis:

Recently, 3D printing processes have been used to manufacture metal powder filters with manufacturing complex-shape. In this study, metal powder filters of various shapes were manufactured using the metal extrusion additive manufacturing (MEAM) process, which is used to manufacture three-dimensional structures by extruding a filament consisting of a metal powder and a binder. Firstly, filaments were prepared by appropriately mixing SUS316 powder with sizes ranging from 7.5 µm to 50 µm and a binder. These filaments were extruded at temperatures of 100℃ to 160℃ depending on the type of filament being manufactured, to form three types of cylindrical filter. Specimens were sintered in a high vacuum atmosphere furnace at 850℃ to 1050℃ for 1 hour after debinding. The specimens were analyzed for permeability using a capillary flow porometer, porosity was determined by applying Archimedes’ law and microstructure was observed using SEM.

Źródło:

Archives of Metallurgy and Materials; 2022, 67, 4; 1517--1520
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Comparison of Vacuum Sintered and Selective Laser Melted Steel AISI 316L

Autorzy:

Brytan, Z.

Powiązania:

https://bibliotekanauki.pl/articles/351485.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

austenitic stainless steel
316L
selective laser melting
SLM

Opis:

The paper presents the results of the basic mechanical properties determined in the static tensile test, impact un-notched Charpy test and hardness of austenitic stainless steel type 316L produced by two techniques: classical pressing and sintering in a vacuum with rapid cooling and selective laser melting (SLM). In this work fracture surface of Charpy test, samples were studied. The results indicate that application of selective laser melting (SLM) makes it possible to double increase the strength properties of components manufactured from austenitic stainless steel type 316L compared to sintering in a vacuum. Resulted in mechanical properties strongly depend on porosity characteristic and the presence of superficial oxides in the case of sintered steel and the character of observed microstructural defects deriving from non-fully melted powder particles and the formation of voids between subsequently melted pool tracks during the SLM.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 4; 2125-2131
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

The Erosion Resistance and Microstructure Evaluation of Laser Surface Alloyed Sintered Stainless Steels

Autorzy:

Brytan, Z.

Powiązania:

https://bibliotekanauki.pl/articles/355450.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sintered stainless steel
duplex
laser surface alloying
erosion resistance

Opis:

The sintered stainless steels of different microstructures (austenitic, ferritic and duplex) were laser surface alloyed with hard powders (SiC, Si₃ N₄ ) and elemental alloying powders (Cr, FeCr, FeNi) to obtain a complex steel microstructure of improved properties. Laser surface alloying (LSA) involved different strategies of powder placing: the direct powder feeding to the molten metal pool and filling grooves machined on the sample surface by powder, and then laser surface melting. Obtained microstructures were characterised and summarised, basing on LOM, SEM and XRD analysis. The links between base material properties, like superficial hardness and microhardness, derived microstructures and erosion resistance was described. The LSA conditions and alloying powder placement strategies on erosion resistance was evaluated. The erosion wear is lower for Cr, FeCr, FeNi laser alloying, where powders were dissolved in the steel microstructure, and hard phases were not precipitated. Precipitations of hard phases (carbides, silicides, martensite formation) reduce erosion resistance of SiC alloyed stainless steel. The LSA with Si₃ N₄ works better due to lack of precipitates and formation of a soft and ductile austenitic microstructure. The erosion wear at the impingement angle of 90° is high for hard and therefore brittle surface layers obtained as a result of alloying by hard particles (SiC, Si₃ N₄ ). The softer and ductile austenitic stainless steel resist better than harder ferritic and duplex stainless steel material at studied erodent im pingement angle.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 4; 2039-2049
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Microstructures and Mechanical Properties of ODS Ferritic Stainless Steels for High Temperature Service Applications

Autorzy:

Noh, Sanghoon
Kang, Suk Hoon
Kim, Tae Kyu

Powiązania:

https://bibliotekanauki.pl/articles/355864.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
oxide dispersion strengthening
oxide particles
tensile strength

Opis:

In this study, ODS ferritic stainless steels were fabricated using a commercial alloy powder, and their microstructures and mechanical properties were studied to develop the advanced structural materials for high temperature service applications. Mechanical alloying and uniaxial hot pressing processes were employed to produce the ODS ferritic stainless steels. It was revealed that oxide particles in the ODS stainless steels were composed of Y-Si-O, Y-Ti-Si-O, and Y-Hf-Si-O complex oxides were observed depending on minor alloying elements, Ti and Hf. The ODS ferritic stainless steel with a Hf addition presented ultra-fine grains with uniform distributions of fine complex oxide particles which located in grains and on the grain boundaries. These favorable microstructures led to superior tensile properties than commercial stainless steel and ODS ferritic steel with Ti addition at elevated temperature.

Źródło:

Archives of Metallurgy and Materials; 2019, 64, 3; 921-924
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Automated Laser Welding of AISI 304 Stainless Steel by Disk Laser

Autorzy:

Lisiecki, A.
Kurc-Lisiecka, A.

Powiązania:

https://bibliotekanauki.pl/articles/354376.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

autogenous laser welding
butt joints
stainless steel
AISI 304
austenitic steel

Opis:

The automated laser welding process of 2.0 mm thick sheets of AISI 304 stainless steel was investigated. The disk laser with a beam spot diameter of 200 μm was used for bead-on-plate and next for autogenous butt joints welding. The influence of basic welding parameters such as laser power, welding speed, and focal spot position on fusion zone configuration, quality of joints, microstructure changes, and microhardness distribution across the joints were analysed and presented in this paper. The results have shown that stiffening of the 2.0 mm thick sheets is crucial for providing high quality and reproducibility of butt joint in a case of AISI 304 stainless steel due to relatively low thermal conductivity and simultaneously high thermal expansion. Relevant drop of microhardness in the weld zone was observed. The mean value of microhardness of the base metal was 230 HV0.1, while the microhardness in fusion zone of the test welds was ranged from 130 to 170 HV0.1. Additionally the microstructure changes in the weld metal and also in the heat affected zone of test joints is described.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 4; 1663-1672
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Corrosion properties of 1.4512 ferritic and 1.4404 austenitic steels for the automotive industry

Autorzy:

Zatkalíková, Viera
Markovičová, Lenka
Wróbel-Knysak, Anna

Powiązania:

https://bibliotekanauki.pl/articles/88716.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Menedżerów Jakości i Produkcji

Tematy:

corrosion
ferritic stainless steel
austenitic stainless steel
cyclic potentiodynamic test
exposure test
stal ferrytyczna odporna na korozję
stal austenityczna
test potencjodynamiczny
test ekspozycji

Opis:

Exhaust systems are susceptible to in-service wear because of their exposition to the very aggressive corrosive environment. Various stainless steels grades (mostly ferritic and austenitic, but also martensitic and duplex) and protective coatings are currently used for exhaust system elements to increase their aestetics and corrosion resistance. This article focuses on evaluation and comparison of the common corrosion properties of two stainless steels with different microstructures (ferritic and austenitic) used for exhaust system components at the low ambient temperature (35 °C). An aggressive acidic corrosion solution for electrochemical cyclic potentiodynamic tests (ASTM G61) was chosen to simulate partly inner (condensate) and also external environment (reaction of exhaust gases with water, chlorides in solution after winter road maintenance). Exposure tests of the pitting corrosion resistance were performed according to ASTM G48 standard method.

Źródło:

System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 745-752
2657-5450

Pojawia się w:

System Safety : Human - Technical Facility - Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Odporność korozyjna drutów ze stali nierdzewnej przeznaczonych dla ortopedii
Corrosion resistance of wire made of stainless steel for orthopaeidcs

Autorzy:

Szuła, A.
Przondziono, J.
Walke, W.

Powiązania:

https://bibliotekanauki.pl/articles/284660.pdf

Data publikacji:

2009

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

odporność korozyjna
stal nierdzewna
ortopedia
corrosion resistance
stainless steel
orthopaedics

Źródło:

Engineering of Biomaterials; 2009, 12, no. 89-91; 103-105
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Estimation of the influence of burnishing process on steel X5CRNIL810 internal stresses

Autorzy:

Labuda, W.
Starosta, R.
Zdunek, J.

Powiązania:

https://bibliotekanauki.pl/articles/247759.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

burnishing
surface layers
stainless steel
angular momentum pump
internal stress

Opis:

Angular momentum pumps are frequently applied on board ships. As the pumps are working in hard conditions they are made from materials resistant to cavitation wear and electrochemical corrosion. The most popular damage of pump shaft is neck wear in place where seals are mounted. Burnishing, as modern finish plastic tooling method, makes it possible to get high technological quality of elements. The proposed process of burnishing shaft pins is designed to increase the service life of marine seawater pump shaft installations, which should enhance the economic effect. Thanks to its numerous advantages burnishing was proposed to angular momentum pumps shafts tooling instead of finish machining (finish turning, grinding, lapping). The goal was to estimate optimal burnishing parameters which enable receiving biggest strengthening and lowest roughness factor of angular momentum pumps shafts. The tool used was one-roll burnishing tool SRMD type produced by Yamato. The aim of this study was to determine the internat stresses occurring in the subsurface layer after machining carried out, and after burnishing the surface of marine pump shaft pins made of X5CrNH810 stainless steel.

Źródło:

Journal of KONES; 2010, 17, 4; 265-270
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Mercury-free dissolution of aluminum-based nuclear material: from basic science to the plant

Autorzy:

Crooks III, W.
Crown, J.
Dunn, K.
Mickalonis, J.
Murray, A.
Navratil, J.

Powiązania:

https://bibliotekanauki.pl/articles/148380.pdf

Data publikacji:

2003

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

aluminum dissolution
plutonium oxide dissolution
stainless steel corrosion
mercury-free

Opis:

Conditions were optimized for the first plant-scale dissolution of an aluminum-containing nuclear material without using mercury as a catalyst. This nuclear material was a homogeneous mixture of plutonium oxide and aluminum metal that had been compounded for use as the core matrix in Mark 42 nuclear fuel. B ecause this material had later failed plutonium distribution specifications, it was rejected for use in the fabrication of Mark 42 fuel tubes, and was stored at the Savannah River Site (SRS) awaiting disposition. This powder-like material was composed of a mixture of ~80% aluminum and 11% plutonium. Historically, aluminum-clad spent nuclear fuels have been dissolved using a mercuric nitrate catalyst in a nitric acid (HNO3) solution to facilitate the dissolution of the bulk aluminum cladding. Developmental work at SRS indicated that the plutonium oxide/aluminum compounded matrix could be dissolved using boric acid-hydrofluoric acid-nitric acid as a substitute for mercury. Various mercury-free conditions were studied to evaluate the rate of dissolution of the Mark 42 compact material and to assess the corrosion rate to the stainless steel dissolver. The elimination of mercury from the dissolution process fit with waste minimization and industrial hygiene goals to reduce the use of mercury in the United States. The mercury-free dissolution technology was optimized for Mark 42 compact material in laboratory-scale tests, and successfully implemented at the plant.

Źródło:

Nukleonika; 2003, 48, 4; 163-169
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 47.

Tytuł:

The analysis of influence on friction factor at constant force for marine pump shafts after finishing treatment

Autorzy:

Labuda, W.
Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/243518.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

plastic tooling
burnishing
stainless steel
angular momentum pump
friction factor

Opis:

Angular momentum pumps are very often used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However during operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction factor of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of 304L stainless steel. The finish tooling of pump shaft pins was carry out on a universal centre lathe. The finish turning process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1-80x10x32-99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the number of burnishing tool passes on the friction factor was determined. The paper aimed at defining the influence of burnishing on service conditions by: testing electrochemical corrosion, friction wear and contact fatigue. The work presented the research results of friction factor tests of the samples after finish turning, grinding and burnishing. In addition, the influence of the burnisher passes number on the friction factor was determined. The experiment was performed on block – roll tester machine.

Źródło:

Journal of KONES; 2013, 20, 2; 245-251
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

The analysis of finish tooling influence on wear intensity of marine pump shaft

Autorzy:

Labuda, W.
Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/244526.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

plastic tooling
burnishing
stainless steel
angular momentum pump
wear intensity

Opis:

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However during operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of 304L stainless steel. The finish tooling of pump shaft pins was carry out on a universal centre lathe. The finish turning process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1-80x10x32-99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the number of burnishing tool passes on the friction was determined. The paper will present the research results of test on the wear intensity examination of samples after finish machining. The experiment was performed on block – roll tester machine.

Źródło:

Journal of KONES; 2013, 20, 1; 163-170
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

The influence of cutting inserts geometric on surface roughness of steel applied to sea water pump shafts

Autorzy:

Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/244988.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

turning dynamometer
surface roughness parameters
stainless steel
marine pump shaft

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the research results of pump shaft pins finish turning. The research was performed on a roller 60 mm in diameter made of X5CrNi18-10 steel. The finish tooling of pump shaft pins was carry out on a universal CDS 6250 BX-1000 centre lathe. The finish lathing process was carried out by means of Sandvik Coromant cutting tool with replaceable inserts. In the research of lathing process used standard inserts (MF), inserts with increased tolerance (UM) and inserts with Wiper technology (WF). During lathing, the optimal machining parameters were used. The cutting process was performed at entering angle of 90°. The process of lathing used cutting tool dynamometer DKM 2010. During the research, the effect of cutting insert geometric and optimal cutting parameters on the surface roughness of steel applied to marine pumps shaft pins was determined.

Źródło:

Journal of KONES; 2015, 22, 3; 133-140
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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Tytuł:

Corrosion Resistance and Mechanical Properties of TIG and A-TIG Welded Joints of Lean Duplex Stainless Steel S82441 / 1.4662

Autorzy:

Brytan, Z.
Niagaj, J.

Powiązania:

https://bibliotekanauki.pl/articles/354977.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

lean duplex stainless steel
TIG
pitting corrosion
ASTM G48

Opis:

This paper presents results of pitting corrosion resistance of TIG (autogenous and with filler metal) and A-TIG welded lean duplex stainless steel S82441/1.4662 evaluated according to ASTM G48 method, where autogenous TIG welding process was applied using different amounts of heat input and shielding gases like pure Ar and Ar+N2 and Ar+He mixtures. The results of pitting corrosion resistance of the welded joints of lean duplex stainless steel S82441 were studied in as weld conditions and after different mechanical surface finish treatments. The results of the critical pitting temperature (CPT) determined according to ASTM G48 at temperatures of 15, 25 and 35°C were presented. Three different surface treatment after welding were applied: etching, milling, brushing + etching. The influence of post weld surface treatment was studied in respect to the pitting corrosion resistance, basing on CPT temperature. Research on TIG welding of lean duplex stainless steel S82441/1.4662 showed a clear influence of the applied shielding gas mixtures, where the addition of 5 to 15% N2 to Ar virtually no effect on the level of resistance to pitting corrosion, only 5% N2 addition has a positive effect, while use of a mixture of 50% Ar + 50% He compared with welding at 100% Ar atmosphere, can significantly reduce the resistance to pitting corrosion. Definite good results were obtained during TIG welding with the participation of activation flux (A-TIG). The weld surface of lean duplex stainless S82441/1.4662 obtained in A-TIG welding without the addition of filler metal has a much lower tendency to pitting corrosion than traditional welds made by TIG method. Pitting corrosion resistance of welds made by A-TIG improved with the increase of the heat input in the tested range of welding current 100-200 A. It was also found that the intensity of the occurrence of pitting does not affect the method of cleaning welds after welding, but the mechanical removal of a thin surface layer of metal significantly reduces their intensity.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 2A; 771-784
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 51.

Tytuł:

Adsorption and corrosion inhibition behavior of stainless steel 316 by aliphatic amine compounds in acidic solution
Adsorpcja i hamowanie korozji stali nierdzewnej 316 przez alifatyczne związki aminowe w kwaśnym roztworze

Autorzy:

Goudarzi, N.
Peikari, M.
Reza Zahri, M.
Reza Mousavi, H.

Powiązania:

https://bibliotekanauki.pl/articles/356447.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

korozja
stal nierdzewna
Armohib 28
corrosion inhibitor
stainless steel 316

Opis:

Gravimetric and electrochemical measurements were performed to investigate the effectiveness of an aliphatic amine compound with trade name of Armohib 28. It was found that the percentage inhibition efficiency increased with the increase of the compound concentration. Polarization curves indicate that the inhibitor under investigation acts as cathodic type which retards the rate of corrosion reactions by adsorbing on to the steel surface according to Langmuir adsorption isotherm. The activation energy and thermodynamic parameters were calculated and analyzed. The data obtained from electrochemical impedance spectroscopy (EIS) were analyzed to model the corrosion inhibition process through equivalent circuit.
W celu zbadania skuteczności alifatycznego związku aminowego o nazwie handlowej Armohib 28 przeprowadzono pomiary grawimetryczne i elektrochemiczne. Stwierdzono, że procentowa skuteczność hamowania wzrosła wraz ze wzrostem stężenia związku. Krzywe polaryzacji wskazują, że badany inhibitor działa jak inhibitor typu katodowego, który opóźnia szybkość reakcji korozji adsorbując na powierzchni stali według izotermy adsorpcji Langmuira. Energia aktywacji i parametry termodynamiczne zostały obliczone i analizowane. Dane uzyskane z elektrochemicznej spektroskopii impedancyjnej (EIS) wykorzystano do modelowania procesu hamowania korozji przy użyciu obwodu zastępczego.

Źródło:

Archives of Metallurgy and Materials; 2012, 57, 3; 845-851
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 52.

Tytuł:

Hydrogen Embrittlement of Welded Joint Made of Supermartensitic Stainless Steel in Environment Containing Sulfane

Autorzy:

Jonšta, P.
Váňová, P.
Brožová, S.
Pustějovská, P.
Sojka, J.
Jonšta, Z.
Ingaldi, M.

Powiązania:

https://bibliotekanauki.pl/articles/352649.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

hydrogen embrittlement
sulfane
tensile test
supermartensitic stainless steel
weld joint

Opis:

The work is focused on evaluation of resistance of the welded joint made of supermartensitic 13Cr6Ni2.5Mo stainless steel to sulfide stress cracking. Testing method A and solution B in accordance with NACE TM 0177 were used. All the testing samples were ruptured in a very short time interval but welded joint samples were fractured primarily in the weld metal or in heat affected zone and not in the basic material. Material analysis of samples were made with use of a ZEISS NEOPHOT 32 light microscope and a JEOL 6490LV scanning electron microscope.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 2A; 709-712
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 53.

Tytuł:

Kontrola chropowatości powierzchni stali AISI 136L SS po polerowaniu elektrochemicznym w polu magnetycznym w zakresie transpasywnym krzywej polaryzacji
Control of AISI 316L SS surface roughness after magnetoelectrochemical polishing MEP treatment within the transpassive region of polarisation characteristics

Autorzy:

Rokosz, K.

Powiązania:

https://bibliotekanauki.pl/articles/158450.pdf

Data publikacji:

2010

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

pomiary chropowatości
stal nierdzewna
elektropolerowanie
roughness measurements
stainless steel
electropolishing

Opis:

Proces elektropolerowania jest kontrolowanym anodowym roztwarzaniem powierzchni metalu/stopu. Komercyjnie proces jako obróbka wykończająca został wprowadzony do produkcji w 1950 roku. Otrzymana po nim powierzchnia charakteryzuje się małą chropowatością, dużym połyskiem oraz gładkością. Artykuł prezentuje możliwość kontrolowania i jednocześnie sterowania chropowatością powierzchni otrzymywaną po procesie elektropolerowania na podstawie otrzymanego modelu matematycznego. Model wyznacza zależność chropowatości powierzchni (Sa [Μm]) od wielkości pola magnetycznego (B [mT]) oraz gęstości prądu polerowania (i [A/dm2]). Otrzymane wyniki pokazują, że zakres chropowatości po obróbce elektrochemicznej w zależności od warunków polerowania mieszczą się w przedziale 0,602 Μm do 1,612 Μm. Najlepsze parametry chropowatości powierzchni po obróbce mechanicznej papierem ściernym (Sa=2,5 Μm) dla czasu polerowania t=1 min w roztworze kwasów H2SO4 i H3PO4 w stosunku 4:6, w temperaturze 65 š 5 oC otrzymano dla warunków: B=0 mT, i=525 A/dm2 (Sa=0,762 Μm) oraz B=225 mT, i=50 A/dm2 (Sa=0.612 Μm), a najgorsze dla: B=225 mT, i=525 A/dm2 (Sa=1,612 Μm).
Electropolishing is controlled anodic dissolution of metals which improves surface properties of metals. It is often referred to as a "reverse plating" or "Super Passivation" process. Commercial applications of electropolishing have been in use since 1950's. Conventional mechanical finishing systems can smear, bend, stress or even fracture the crystalline metal surface to achieve smoothness or brightness. Electropolishing offers the advantage of removing metal from the surface producing a unidirectional pattern that is both stress and occlusion free, microscopically smooth and often highly reflective [1, 2]. Solutions are available to electropolish most common metals. To establish optimum conditions for electropolishing, a polarization curve is plotted and a plateau of current densities is established. The current densities plateau mainly exists just below the oxygen evolution regime. For many materials like steels the best electropolishing results are obtained over this plateau under oxygen evolution conditions. The paper presents control of surface roughness after standard- and magnetic- electrochemical polishing under different conditions. Mechanically polished samples (Sa=2,5 Μm) were prepared for electrochemical polishing. The electrolyte with 10% water content and a ratio between H2SO4 and H3PO4 of 4:6 was proved to be successful [1, 2, 3]. The electrolyte temperature of 65 š 5 oC and processing time 1 min were found to be optimal. The obtained results show that the surface roughness after treatment was in the range: from 0,602 Μm to 1,612 Μm. The best results were obtained after electrochemical treatment for the following parameters: B=0 mT, i=525 A/dm2 (Sa=0,762 Μm) as well as B=225 mT, i=50 A/dm2 (Sa=0,612 Μm), while the worst one for: B=225 mT, i=525 A/dm2 (Sa=1,612 Μm) [Table 2, Fig. 9].

Źródło:

Pomiary Automatyka Kontrola; 2010, R. 56, nr 4, 4; 322-325
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 54.

Tytuł:

Some problems of plasma-material interactions in fusion devices

Autorzy:

Glazunov, G.
Volkov, E.
Lapshin, V.
Tereshin, V.
Sadowski, M.
Langner, J.
Stanisławski, J.

Powiązania:

https://bibliotekanauki.pl/articles/146712.pdf

Data publikacji:

2000

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

boron-carbide erosion
plasma-material interaction
TiN-coated stainless-steel

Opis:

The paper concerns some questions connected with the interaction of high-temperature plasma-ion fluxes with solid materials inside experimental chambers used for fusion-oriented research, and particularly inside the Torsatron-type facilities. Mechanisms of the boron carbide erosion are described and discussed. Also described is the behaviour of TiN-coated stainlesssteel surfaces under the irradiation with hydrogen plasma-ion fluxes. In summary, there are described damages in the boron carbide layers and changes in the composition of the TiN-coatings.

Źródło:

Nukleonika; 2000, 45, 3; 209-213
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 55.

Tytuł:

Grinding of stainless steel X6CrNiMoTi and its final roundness

Autorzy:

Naprstkova, N.
Novak, M.
Cais, J.

Powiązania:

https://bibliotekanauki.pl/articles/111954.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Menedżerów Jakości i Produkcji

Tematy:

roughness
analyses
stainless steel
grinding
chropowatość
analiza
stal nierdzewna
szlifowanie

Opis:

Machining of stainless steels is often an important technology used in production. Products made from these materials are very often used in mechanical engineering, and quality of work-piece surface after machining respective grinding is one of the important parameters that to us speak about the quality of the machining process. One of these parameters that can to give evidence about the quality of the surface is for rotating part the roundness. Its measurement is one of the important sources of information about how cutting conditions can affect the quality of the machined surface. The paper deals with the influence of cutting conditions when grinding steel X6CrNiMoTi (EN ISO) on the roundness of a machined surface.

Źródło:

Production Engineering Archives; 2014, 5, 4; 18-21
2353-5156
2353-7779

Pojawia się w:

Production Engineering Archives

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 56.

Tytuł:

The Effect of the Parameters of Robotic TIG Welding on the Microstructure of 17-4PH Stainless Steel Welded Joint

Autorzy:

Nalborczyk-Kazanecka, Agnieszka
Mrowka-Nowotnik, Grażyna

Powiązania:

https://bibliotekanauki.pl/articles/2203752.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

welding
17-4PH stainless steel
precipitation hardening
heat treatment

Opis:

17-4PH stainless steel finds application in the aerospace industry owing to its good mechanical properties and corrosion resistance. In the literature, this steel is described as good for welding, but research shows that it may be problematic due to the formation of defects. In this study, the welded joints were made by the robotic TIG welding method with various welding speeds (2 and 3 mm/s). The joints were subjected to non-destructive testing and were free from defects. The microstructure was observed by light microscopy and scanning electron microscopy. Changes in the microstructure of the heat affected zone were observed and discussed. Based on the observation of the microstructure and the change in the hardness profile, the heat affected zone was divided into 4 characteristic regions. δ-ferrite and NbC were observed in the martensite matrix. The welded joints were subjected to heat treatment consisting of solution and aging in 550°C for 4 h. The microstructure of the heat affected zone become homogenized as a result of the heat treatment. The content of stable austenite in the welded joint after the heat treatment was about 3%.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 1; 339--344
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 57.

Tytuł:

Manufacturing Methods of Alloy Layers on Casting Surfaces

Autorzy:

Szajnar, J.
Wróbel, T.
Dulska, A.

Powiązania:

https://bibliotekanauki.pl/articles/107005.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

cast steel
cast iron
monolithic and granular inserts
alloy layer
stainless steel

Opis:

In this paper, we presented the technology of layered castings based on the founding method of layer coating directly in the cast process known as the method of mold cavity preparation by monolithic or granular material of insert. Prepared castings consist of two fundamental parts: the base part and working part (layer). The base part of a layered casting is usually typical foundry material (i.e., pearlitic grey cast iron with flake graphite or ferritic-pearlitic carbon cast steel), whereas the dependence of an insert type (i.e., monolithic or granular) working part (layer) is suitably plated with ferrit‑ ic and austenitic alloy steels or a layer from a Cr-base alloy. The ratio of thickness between the base and working part is between 8:1 and 10:1. The quality of the layered castings was evaluated on the basis of ultrasonic non-destructive test‑ ing, structure, and selected usable property research. According to work out technology, the prepared layered castings can work in conditions that require high heat resistance and/or corrosion resistance from the working surface layer of an element in a medium of industrial water, for example. Moreover, in the case of applying an insert based on Cr-base alloy powder on the working surface layer, it is possible to obtain high hardness and abrasive wear resistance.

Źródło:

Journal of Casting & Materials Engineering; 2017, 1, 1; 2-6
2543-9901

Pojawia się w:

Journal of Casting & Materials Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 58.

Tytuł:

The influence of finish tooling on friction properties of steel applied to sea water pump shafts

Autorzy:

Labuda, W.
Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/242888.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

plastic tooling
burnishing
stainless steel
angular momentum pump
riction properties

Opis:

Angular momentum pumps are very often applied on-board ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However, during operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction properties of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of 304L stainless steel. The finish tooling of pump shaft pins was carry out on a universal centre lathe. The finish turning process was carried out by means of a WING WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1 – 80x10x32 – 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the number of burnishing tool passes on the friction was determined. The paper will present the research results of test on the friction properties examination of samples after finish machining. The experiment was performed on T-05 block-on-ring wear tester.

Źródło:

Journal of KONES; 2014, 21, 2; 185-192
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 59.

Tytuł:

The influence of changing of treatment condition on surface roughness parameter during turning process by wiper insert

Autorzy:

Labuda, Wojciech

Powiązania:

https://bibliotekanauki.pl/articles/243562.pdf

Data publikacji:

2019

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

finish turning process
surface roughness parameter
cutting parameters
stainless steel

Opis:

One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of change of cutting parameters on surface roughness parameter during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The chemical composition of steel was measured by Solaris-ccd plus optical spectrometer. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathes. Measurement of surface roughness was carried out by T8000 profilometer. The turning process was conducted by a cutting tool with Wiper insert. During the turning, the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev], cutting depth ap [mm] and additionally changed nose radius r [mm], and tool cutting edge angle ϰr [º]. The results of measurements of Ra parameter underwent statistic analysis. The calculations were conducted by Statistica software.

Źródło:

Journal of KONES; 2019, 26, 1; 81-88
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 60.

Tytuł:

Multi-criteria optimization of steel burnishing parameters applied to marine pumps shaft pins

Autorzy:

Charchalis, A.
Starosta, R.
Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/243937.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

multicriteria optimization
burnishing
stainless steel
surface layer
angular momentum pumps

Opis:

The paper presents the research results of the possibilities of applying burnishing as steel finishing treatment for marine pumps shafts. X5CrNil810 (AISI304 L) corrosion resistant steel in the form of a roller 40 mm m diameter was used for the research. The burnishing process was carried out by SRMD single roll burnish by Yamato. During the process of burnishing various parameters of the technological process were used, that is burnishing force, speed and feed. Within the research, the optimization of burnishing technological parameters was conducted on account of the minimalization of Ra coefficient as we 11 as the maximalization of Su. The Slt coefficients values determining the degree of relative hardness of surface layer varied depending on the burnishing parameters applied and fluctuated around l% to 18%. However, the values of KRa coefficients defining the surface roughness reduction index were in the range of l to 15 as a result of burnishing. The object of the paper was to determine the optima! burnishing parameters in order to achieve the highest level of surface layer relative hardness and to decrease the surface roughness of marine pumps shaft pins made of stainless steel. The multi-criteria optimization conducted with the use of min-max method demonstrated that with regard to maximum surface hardness level, burnishing should be carried out at the following parameters of the technological process: burnishing force 1.1 kN, burnishing speed 35 m/min and feed 0.13 mm/rev.

Źródło:

Journal of KONES; 2010, 17, 3; 55-62
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 61.

Tytuł:

Analiza i doskonalenie składu chemicznego stopu w celu poprawy cech eksploatacyjnych tłumików samochodowych
Analysis and improvement of chemical composition of metal for improvement of car supply characteristics

Autorzy:

Michalski, K.
Sitko, J.
Konieczny, D.

Powiązania:

https://bibliotekanauki.pl/articles/113015.pdf

Data publikacji:

2017

Wydawca:

STE GROUP

Tematy:

stal nierdzewna
tytan
mikrostruktura
korozja
stainless steel
titanium
microstructure
corrosion

Opis:

Część tłumików produkowanych przez Tenneco Automotive ulega szybko postępującej korozji. Elementy do budowy tłumików dostarczane są w postaci rur wykonanych ze stali ferrytycznej X2CrTi12 (1.4512). Rury pochodzą z dwóch źródeł. Przeprowadzone badania składu chemicznego wykazały różnice składu stopów użytych do wykonania rur. W artykule przedstawiono proces analizy składu chemicznego stopu blachy dla potrzeb poprawy cech eksploatacyjnych części samochodowych, jakimi są tłumiki. Zbadano również wpływ pierwiastka stopowego – tytanu na występowanie i przebieg procesu korozyjnego w stalach wysokostopowych – nierdzewnych, w których występują łącza spawane.
Some of the fuses produced by Tenneco Automotive undergo rapid corrosion. Muffler components are supplied in the form of pipes made of ferritic steel X2CrTi12 (1.4512). Pipes come from two sources. The chemical composition tests showed differences in the composition of the alloys used to make the pipes. The paper presents the process of analysis of chemical composition of sheet metal for the purpose of improving the performance characteristics of automotive parts, such as silencers. The influence of the alloying element – titanium on the occurrence and the course of the corrosion process in high alloy steels – stainless steel, where welded joints were studied was also investigated.

Źródło:

Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 8; 124-133
2391-9361

Pojawia się w:

Systemy Wspomagania w Inżynierii Produkcji

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 62.

Tytuł:

Influence of Ceramic Coating on Mechanical Properties of Stainless Steel

Autorzy:

Czekaj, D.
Lisińska-Czekaj, A.
Krzysztofowicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/353220.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
X-ray analysis
microhardness
sol-gel ceramic coating

Opis:

Crystal structure and phase composition of stainless steel substrates (AISI 304 type) was studied and it was found that they adopted the cubic symmetry. The calculated elementary cell parameter for the mayor Fe-Ni phase (weight fraction 99%) was a = 3.593 Å, whereas the mean grain size was = 2932 Å. Morphology of the stainless steel substrate surface was studied with profilometry. Mechanical properties of the stainless steel substrates and stainless steel substrates coated with ceramic layer of barium strontium titanate were studied with microhardness tester. For measurements performed according to the Vickers method the average microhardness was found HV = 189 or HV = 186 for the “in-line” and “mapping” measurement pattern, respectively. The sol-gel method was used to coat the surface of the stainless steel substrate with a thin ceramic layer of the chemical composition Ba_0.6 Sr_0.4 TiO₃ . It was found that the stainless steel substrate covered with sol-gel deposited ceramic coating exhibited the average hardness within the range HV = 217 up to HV = 235 for loading force F = 98 mN and F = 0.98 N, respectively. The Knopp method was also used and it was found that the stainless steel substrate with Ba_0.6 Sr_0.4 TiO₃ coating exhibited hardness HK = 386.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 2; 911-916
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 63.

Tytuł:

The effect of changes in depth of cut on surface roughness in machining of AISI 316 stainless steel

Autorzy:

Jarosz, K.
Löschner, P.

Powiązania:

https://bibliotekanauki.pl/articles/99428.pdf

Data publikacji:

2018

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

AISI 316L stainless steel
surface roughness
depth of cut

Opis:

Currently, process optimization is an important part of design of CNC toolpath, allowing overall process improvement in accordance to a range of criteria. Available CAE software for CNC toolpath optimization works only by changing the feed rate value specified in the base toolpath. The authors are planning to devise a solution allowing for optimization of other process parameters, including depth of cut. In some cases, it would be important for surface roughness to remain unaltered after optimization by means of increasing depth of cut. In this work, the effect of depth of cut on surface roughness was investigated. Depth of cut was altered for the roughing pass, while technological parameters for the finish pass remained constant. Roughness measurements were performed on-machine after rough turning and finish turning. The authors have found that depth of cut has a noticeable effect on investigated roughness parameters, both in the case of rough turning and subsequent finish turning operations.

Źródło:

Journal of Machine Engineering; 2018, 18, 1; 72-79
1895-7595
2391-8071

Pojawia się w:

Journal of Machine Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

A study on the influence of printing orientation in metal printing using material extrusion technology on the mechanical properties of 17-4 stainless steel products

Autorzy:

Dang, Long Cao
Nguyen, Cuong Van
Le, Anh Hoang
Bui, Danh Thanh

Powiązania:

https://bibliotekanauki.pl/articles/28407327.pdf

Data publikacji:

2023

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

additive manufacturing
material extrusion
17-4 PH stainless steel
mechanical properties

Opis:

This study investigated the influence of print orientation on the mechanical properties of 17-4 PH stainless steel parts fabricated using material extrusion technology. Tensile test specimens were 3D printed in different orientations (flat, on-edge, and upright), and their mechanical properties were evaluated. The results showed that the print orientation significantly affected the ultimate tensile strength, yield strength, and elongation at failure of the specimens. The flat and on-edge orientations exhibited similar mechanical properties, while the upright orientation resulted in lower strength and higher fracture susceptibility. Hardness measurements also indicated variations in hardness distribution among the orientations. The findings emphasize the importance of optimizing the print orientation parameter to achieve desired mechanical characteristics in 17-4 PH stainless steel parts.

Źródło:

Journal of Machine Engineering; 2023, 23, 4; 89--100
1895-7595
2391-8071

Pojawia się w:

Journal of Machine Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

Synthesis of nano-structured duplex and ferritic stainless steel powders by dry milling and its comparison with wet milling

Autorzy:

Shashanka, R.
Uzun, Orhan
Chaira, D.

Powiązania:

https://bibliotekanauki.pl/articles/356573.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

powder metallurgy
dry milling
wet milling
planetary milling
stainless steel
sintering

Opis:

In the present paper, elemental Fe, Cr and Ni powders were used to fabricate nano-structured duplex and ferritic stainless steel powders by using high energy planetary ball milling. We have studied the effect of milling atmosphere like wet (toluene) and dry (argon) milling of elemental Fe-18Cr-13Ni (duplex) and Fe-17Cr-1Ni (ferritic) powders for 10 h in a dual drive planetary mill. Stearic acid of 1wt.% was added during milling to avoid agglomeration. The dry and wet milled duplex and ferritic stainless steel powders were characterized by XRD, SEM and particle size analysis techniques. We have found that both the milling atmospheres have great influence in controlling the final particle morphology, size and phase evolution during milling. It was reported that dry milling is more effective in reducing particle size than the wet milling. The Nelson-Riley method of extrapolation was used to calculate the precise lattice parameter and Williamson-Hall method was used to calculate the crystallite size and lattice strain of both the stainless steel milled in argon atmosphere. Dry milled duplex and ferritic stainless steel were then consolidated by conventional sintering method at 1100, 1200 and 1300°C temperatures under argon atmosphere for 1 hour.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 1; 5-14
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

Alkaline leaching of zinc from stainless steel electric arc furnace dusts

Autorzy:

Stefanova, A.
Aromaa, J.
Forsen, O.

Powiązania:

https://bibliotekanauki.pl/articles/110674.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

electric arc furnace dust
EAF
stainless steel
zinc
leaching
sodium hydroxide

Opis:

Stainless steel production generates dust and sludge that are considered as a harmful waste. These dusts contain also valuable metals but extraction and recovery of valuables is difficult due their complex composition. Zinc is the most troublesome element in the dust and it hinders direct recycling of dust back into furnaces. In this paper two different stainless steel electric arc furnace dusts (EAF1 and EAF2) from Outokumpu Stainless (Tornio, Finland), were leached using NaOH solutions. The purpose was to selectively leach out zinc from the dusts and to find factors that affected most dissolution of zinc. From all leaching factors temperature, agitation speed and NaOH concentration were found to be statistically strongly significant, whereas a liquid-to-solid ratio and bubbling gas were only somehow significant. Two experiments from the test series gave clearly higher zinc extraction, that is around 60% for EAF1 and 30% for EAF2. For those experiments, a strong 8 M NaOH solution with the high temperature and agitation speed was used but bubbling gas and liquid-to-solid ratio changed. Zinc was leached selectively and practically no iron, chromium and nickel dissolved.

Źródło:

Physicochemical Problems of Mineral Processing; 2015, 51, 1; 293-302
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

Comparative corrosion studies of 2205 duplex steel after electropolishing and passivation in Ringer’s solution

Autorzy:

Rokosz, Krzysztof
Hryniewicz, Tadeusz
Solecki, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/1178066.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

electropolishing
passivation
pitting corrosion
potentiodynamic corrosion measurements
stainless steel duplex 2205

Opis:

In present work, the results of corrosion analysis of pitting and general corrosion of austenitic duplex 2205 (EN 1.4462) stainless steel in Ringer's solution, are presented. The corrosion rate was studied using potentiodynamic polarisation method by means of the ATLAS 98 potentiostat with POL 98 software. For these measurements the platinum EPT-101 and calomel reference EK-101P electrodes were used. For each run, the electrolytic cell made of glass was used, containing up to 500 ml of the electrolyte. The specimens used for the studies were obtained from a cold-rolled sheet of steel in three forms: as received (without any pretreatment), after abrasive polishing, and after electrochemical polishing. Some of them were passivated for 15 and 30 minutes, respectively, in 20% HNO3 by volume. The study results show clearly that the samples of duplex 2205 stainless steels after electropolishing and passivation for 15 minutes in 20% HNO3 by volume revealed the highest corrosion resistance.

Źródło:

World Scientific News; 2018, 95; 167-181
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Hybrid carbon layers for medical application

Autorzy:

Nowak, D.
Niedzielski, P.

Powiązania:

https://bibliotekanauki.pl/articles/285091.pdf

Data publikacji:

2008

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

hybrid carbon layer
corrosion resistance of stainless steel
RF PACVD methods

Opis:

Carbon layers thanks to their advantages (high biocompatibility, good wear resistance, high corrosion resistance) found the application in medicine. The authors of presented work have obtained improvement of above-mentioned properties (high hardness) with use of hybrid RF PACVD method. Carburizing of the AISI 316L stainless steel is connected with risk of decrease of corrosion resistance which is caused by Cr23C6 formation on the grain boundaries. In the presented work corrosion parameters of the modified elements was investigated. The substrate material used in this work was AISI 316L stainless steel. The hybrid process was performed by RF PACVD method and consisted in carburizing of the sample at the beginning and afterwards carbon film synthesis. The corrosion resistance investigation was conducted using saline solution at similar to human body temperature (37oC), the duration of the investigation was two weeks. Corrosion investigation of modified elements proved that suitable choice of carburizing parameters during the hybrid process doesn’t cause lowering of corrosion resistance of AISI 316L steel. Moreover microscope observations of the modified materials’ structures didn’t show any track of carbide disengagements on the grain boundaries.

Źródło:

Engineering of Biomaterials; 2008, 11, 76; 20-23
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

Corrosion effect of 65% Nitrate acid on X4CrNi1812 at 333 K

Autorzy:

Lipiński, Tomasz
Karpisz, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/104158.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Menedżerów Jakości i Produkcji

Tematy:

steel
stainless steel
corrosion
corrosion rate
roughness
stal
stal nierdzewna
korozja
szybkość korozji
chropowatość

Opis:

Austenitic stainless steels are often used for a materials in the construction of machines and equipment for agricultural and for industrial construction. One of the most important factors constructional material is corrosion resistance. Equipment with austenitic stainless steel can be easy join by quickly welding at a not to high construction price, but one with the serious problem in aggressive environment is their corrosion resistance. A few corrosion processes in crevices and awkward corners can be avoided at the design stage (low roughness parameters, round-section and other). But still the construction material is exposed to corrosion. These steels often come into contact with an aggressive environment based on nitric acid. The main aim of this research is to investigate corrosion resistance in different time (48, 96, 144, 192, 240, 288, 336 hours). For this used weight loss of test samples and its profile roughness. The research was conducted on austenitic stainless steel in grade in Nitrate acid at 333 K. Corrosion tests confirmed that the research this steel in 65% nitrate acid as a corrosive environments is characterized through proportionate to time corrosion process whose measure may be surface roughness. In industrial practice roughness parameters for all the research times can be used for determine the stage and size of steel corrosion.

Źródło:

Quality Production Improvement - QPI; 2019, 1, 1; 425-432
2657-8603

Pojawia się w:

Quality Production Improvement - QPI

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

Preparation Process of Coating Interlayer and the Performance of EH40/2205-Clad Plate with Interlayer

Autorzy:

Feng, K.K.
Yi, Yali
Qin, Y.
Jin, Herong R.

Powiązania:

https://bibliotekanauki.pl/articles/27765059.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

element diffusion
interlayer coating
mechanical properties
numerical simulation
stainless steel-clad plate

Opis:

This study aimed to investigate the effect of different coating processes on interlayer coating using ProCAST software and identify the preferred coating process so as to prepare an EH40/2205 composite plate with a coating interlayer of Ni-5 Fe-15 Co (wt.%) displaying good performance. The preparation and characterization tests were conducted to analyze the interlayer coating, the diffusion of elements at the bonding interface and the mechanical properties of the hot-rolled composite plate. The results showed that the coating rate increased linearly with an increase in the initial coating temperature, pressure difference and the width ratio of the suction layer. The interlayer coating was complete under the guidance of optimized process parameters, and the test results and simulations confirmed each other. The coated interlayer successfully blocked the diffusion of elements between the bonding surfaces. The tensile strength of the rolled composite plate was 580 MPa, which met the needs of the project. The tensile shear fracture occurred at EH40, which proved that the plate was well bonded.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 2; 591--598
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Analiza poprawności pomiaru temperatury w strefie skrawania w procesie toczenia stali 4H13
Analysis of temperature measurement correctness in cutting zone during 4H13 steel turning

Autorzy:

Struzikiewicz, G.

Powiązania:

https://bibliotekanauki.pl/articles/270245.pdf

Data publikacji:

2013

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

termowizja
temperatura
pomiary
toczenie
stal nierdzewna
thermography
temperature
measurements
turning
stainless steel

Opis:

W artykule przedstawiono analizę wpływu wybranych parametrów pomiarowych kamery termowizyjnej oraz kierunku obserwacji procesu toczenia wzdłużnego, na wartość maksymalnej temperatury wióra, uzyskaną z obrazów termograficznych. Przedstawiono wyniki pomiarów maksymalnej temperatury w strefie skrawania dla zmiennych czynników takich jak: kąt rejestracji obrazu termowizyjnego, skala powiększenia, dodatkowe źródła światła. Przeprowadzono również komputerową symulację rozkładu pola temperatury w procesie toczenia wzdłużnego stali nierdzewnej 4H13.
The paper presents an analysis of the influence of selected measuring parameters of the infrared camera and the direction of observation of the longitudinal turning on the value of the maximum temperature of the chip obtained from the thermographic images. The results of measurements of the maximum temperature in the cutting zone for variable factors such as the angle of the thermal image registration, scale of magnification, additional light source are presented. A computer simulation of the temperature field distribution in the longitudinal turning of stainless steel 4H13 also was conducted.

Źródło:

Inżynieria Maszyn; 2013, R. 18, z. 4; 72-85
1426-708X

Pojawia się w:

Inżynieria Maszyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

Optimization of Ferrite Stainless Steel Mechanical Properties Prediction with artificial Intelligence Algorithms

Autorzy:

Honysz, R.

Powiązania:

https://bibliotekanauki.pl/articles/354759.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

analysis and modelling
numerical techniques
computational material science
artificial algorithms
stainless steel

Opis:

The article presents a computational model build with the use of artificial neural networks optimized by genetic algorithm. This model was used to research and prediction of the impact of chemical elements and heat treatment conditions on the mechanical properties of ferrite stainless steel. Optimization has allowed the development of artificial neural networks, which showed a better or comparable prediction result in comparison to un-optimized networks has reduced the number of input variables and has accelerated the calculation speed. The introduced computational model can be applied in industry to reduce the manufacturing costs of materials. It can also simplify material selection when an engineer must properly choose the chemical elements and adequate plastic and/or heat treatment of stainless steels with required mechanical properties.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 2; 749-753
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

XPS measurements of AISI 430 SS surface after electropolishing operations in a transpassive region of polarisation characteristics
Badania XPS powierzchni stali ferrytycznej AISI 430 po operacjach elektropolerowania w transpasywnym obszarze charakterystyk polaryzacyjnych

Autorzy:

Hryniewicz, T.
Rokosz, K.
Raaen, S.

Powiązania:

https://bibliotekanauki.pl/articles/156467.pdf

Data publikacji:

2012

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

ferrytyczna stal AISI 430
magnetoelektropolerowanie (MEP)
XPS measurements
ferritic stainless steel
magnetoelectropolishing

Opis:

The paper presents results of measuring the chemical composition of the passive film formed on the ferritic steel AISI 430 SS after mechanical and electrochemical treatments. XPS (X-ray Photoelectron Spectroscopy) measurements were taken to obtain the chemical composition of the passive film on AISI 430 SS. The study results show that the ratio of the chromium compounds to iron compounds (Cr/Fe) in the passive film varies depend on the kind of surface treatment, starting from 0.4 after abrasive polishing (MP), up to 2.59 after standard electropolishing (EP) operation. The results of Cr/Fe ratio after electropolishing with electrolyte stirring (MIX) and these after magnetoelectropolishing (MEP) are between the two values. It was found that after electrochemical treatments the main compounds in the passive film consisted of Fe2O3, FeOOH, Cr2O3, Cr(OH)3.
W artykule przedstawiono wyniki pomiarów składu chemicznego warstwy pasywnej wytworzonej na stali ferrytycznej AISI 430 po polerowaniu ściernym oraz polerowaniu elektrolitycznym. Skład chemiczny warstwy wierzchniej stali AISI 430 zbadano przy użyciu fotoelektronowej spektroskopii promieniami Roentgena (XPS). Wyniki badań pokazują, że stosunek zawartości związków chromu do związków żelaza (Cr/Fe) w warstwie pasywnej zmienia się w zależności od rodzaju obróbki powierzchniowej, poczynając od 0.4 po polerowaniu ściernym (MP), do 2,59 po standardowym polerowaniu elektrolitycznym (EP). Wyniki Cr/Fe po elektropolerowaniu z mieszaniem (MIX) i po magnetoelektro-polerowaniu (MEP) mieszczą się pomiędzy tymi wartościami. Na podstawie badań XPS stwierdzono, że warstwa wierzchnia stali składa się ze związków Fe2O3, FeOOH, Cr2O3, Cr(OH)3

Źródło:

Pomiary Automatyka Kontrola; 2012, R. 58, nr 1, 1; 126-129
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

The Bending, Impact Fracture Behavior and Characteristics of Stainless Steel Clad Plates with Different Rolling Temperature

Autorzy:

An, Q.
Fan, K. Y.
Ge, Y. F.
Liu, B. X.
He, J.
Wang, S.
Chen, C. X.
Ji, P. G.
Tolochko, O.

Powiązania:

https://bibliotekanauki.pl/articles/2049433.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel clad plate
interface characteristics
bending behavior
impact morphologies
delamination crack

Opis:

The interface characteristics, bending and impact behavior, as well as fracture characteristics of stainless steel clad plates fabricated by vacuum hot rolling at different rolling temperatures of 1100°C, 1200°C and 1300°C are investigated in detail. The interface bonding strength is gradually increased with the increasing rolling temperature due to the sufficient diffusion behavior of alloy element. The bending toughness and impact toughness are gradually decreased, while the bending strength increase with the increase of the rolling temperature, which is attributed to mechanisms of matrix softening and interface strengthening at high rolling temperature. Due to the weak interface at 1100°C, the bending and impact crack propagation path was displaced by delamination cracks, which in turn lead to reduction in stress intensity of the main crack, playing an effective role in toughening the stainless steel clad plates. Moreover, the impact fracture morphologies of clad plates show a typical ductile-brittle transition phenomenon, which is attributed to the matrix softening behavior with the increasing rolling temperature.

Źródło:

Archives of Metallurgy and Materials; 2021, 66, 1; 229-239
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

The In-Depth Stress Distribution for 1H13 Specimen after Cutting

Autorzy:

Gadalińska, E.
Wronicz, W.
Malicki, M.

Powiązania:

https://bibliotekanauki.pl/articles/97885.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

in-depth stress distribution
electropolishing
diffraction methods
1H13 stainless steel

Opis:

Measuring the in-depth stress state is of vital importance for materials scientists. Strain gauges methods are capable of yielding information only about the surface stress state. Diffraction methods using synchrotron or neutron radiation, which allow totally non-destructive stress measurements inside the material, are not widely available. In this context, the best widely available method combines the X-ray diffraction stress measurements and gradual removal of the outer layer by means of electropolishing. Here, this method was applied to the specimen made of 1H13 stainless steel cut with under water on a corundum cut-off wheel. The idea was to investigate how deeply an additional stress state resulting from cutting was introduced and whether the technique of combining of X-ray diffractometry and electropolishing can be used widely for determining the stress state inside the specimen.

Źródło:

Fatigue of Aircraft Structures; 2016, 8; 73-79
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Effect of porosity on the properties of nickel-free stainless steel obtained by powder metallurgy route

Autorzy:

Romańczuk-Ruszuk, Eliza
Lipowicz, Paweł
Sztorch, Bogna
Przekop, Robert

Powiązania:

https://bibliotekanauki.pl/chapters/2196290.pdf

Data publikacji:

2022

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

nickel-free austenitic stainless steel
powder metallurgy
porosity
mechanical alloying
corrosion resistance

Opis:

This paper presents the results of research on nickel-free austenitic stain- less steel with the composition Fe-18% Cr-12% Mn, obtained by powder metallurgy, with the use of mechanical alloying of elementary powders, manganese nitride and various process atmospheres. The influence of different protective atmosphere of the process (nitrogen and argon) and the addition of manganese nitride on poros- ity, microstructure, hardness and corrosion resistance of the sinters was described. Steel samples after pressing and sintering at 1200°C (1473 K) in nitrogen were char- acterized by a relative density above 80% and a porosity among 12–19%. In tested materials the pores on the surface are visible in each of the tested materials, which is confirmed by SEM images. The material obtained from powders with manganese nitride after mechanical alloying in nitrogen is characterized by the highest hard- ness and corrosion resistance. The addition of manganese nitride can be another way of introducing nitrogen into nickel-free steel.

Źródło:

Advances in biomedical engineering; 181–190
9788367185400

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Characteristics of Products Made of 17-4PH Steel by means of 3D Printing Method

Autorzy:

Walczak, M.
Gąska, D.
Guzik, M.

Powiązania:

https://bibliotekanauki.pl/articles/118105.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Promocji Wiedzy

Tematy:

direct metal laser sintering
3D printing
17-4PH stainless steel

Opis:

The article presents the results of tests of 17-4PH steel fabricated by means of the method consisting in laser additive manufacturing (LAM) – direct metal laser sintering (DMLS). This grade of steel is characterized by excellent stress corrosion resistance in the first place and is applied as construction material in chemical, aircraft, medical or mould making industry. 3D metal printing is a relatively new method enabling significant change of structural properties of these materials at printing parameters predetermined by printers manufacturer for ”offline” printing mode. In order to achieve this goal, the authors have carried out the analysis of chemical composition, SEM tests and the tests of products surface rough-ness. Furthermore the products have been subjected to X-ray analysis by means of computed tomography (X-ray CT). Structural discontinuities have been found in upper layer and inside printouts subjected to tests.

Źródło:

Applied Computer Science; 2016, 12, 3; 29-36
1895-3735

Pojawia się w:

Applied Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Analiza rozkładu sił skrawania podczas zmiennych warunków obróbki wałów wykonanych ze stali nierdzewnej
Analysis of Distribution of Cutting Forces during Variable Treatment Conditions of Shafts Made of Stainless Steel

Autorzy:

Labuda, W.

Powiązania:

https://bibliotekanauki.pl/articles/341671.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni

Tematy:

siły skrawania
stal nierdzewna
toczenie wykończeniowe
cutting forces
stainless steel
finish turning

Opis:

Jednym z najważniejszych problemów współczesnych technik wytwarzania jest zapewnienie odpowiedniej jakości wyrobu, przy minimalizacji kosztów i jednoczesnym wzroście wydajności produkcji. Podczas obróbki wykończeniowej nadawane są ostateczne wymiary i właściwości użytkowe danego elementu. W artykule przedstawiono wyniki badań wpływu zmiany warunków obróbki na wartość sił podczas toczenia wałów wykonanych ze stali nierdzewnej. Badania przeprowadzono na wałku o średnicy 59 mm wykonanego ze stali nierdzewnej X5CrNi18-10. Proces toczenia czopów wału przeprowadzono na tokarce uniwersalnej kłowej CDS6250BX-1000. Podczas badań wykorzystano nóż tokarski z wymiennymi płytkami skrawającymi CCMT09T302WF, CCMT09T304WF oraz CCMT09T308WF. Pomiar sił skrawania podczas toczenia wykonano siłomierzem DKM 2010.
One of the greatest problem of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. During finish treatment the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The paper presents the results of influence of changing treatment conditions on the value of the cutting forces during cutting process. The turning process of shaft pins ? 59 mm in diameter, made of X5CrNi18-10 stainless steel was carried out on a CDS6250BX-1000 universal lathe. The turning process was conducted by a cutting tool with CCMT09T302WF, CCMT09T304WF and CCMT09T308WF replacable inserts. The measurement of cutting forces during turning was recorded using a DKM 2010 dynamometer.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Gdyni; 2017, 100; 120-130
1644-1818
2451-2486

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Gdyni

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel

Autorzy:

Khenifer, M.
Allaoui, O.
Taouti, M.

Powiązania:

https://bibliotekanauki.pl/articles/1031181.pdf

Data publikacji:

2017-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

316L stainless steel
boronizing
high temperature oxidation
oxidation kinetics
rate constant

Opis:

The effect of boronizing treatment on oxidation at high temperature on 316L stainless steel was studied at 850, 900, 950, and 1000°C in air, for holding times between 0.25 and 24 h. The oxidation resistance of unboronized and boronized specimens was studied isothermally by thermogravimetric analyzer. The oxidation rate constant represented as a parabolic rate constant K_{p} was evaluated. Optical microscopy, X-ray diffraction, and the scanning electron microscopy were used for surface characterizations. The experimental results show that boronized coating increases the resistance of stainless steel 316l about twice and prevents oxygen from penetrating into the stainless steel substrate at the temperatures between 850 and 1000°C.

Źródło:

Acta Physica Polonica A; 2017, 132, 3; 518-520
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

Novel SiC Dispersion Strengthened Austenitic Steels Prepared by Powder Technology

Autorzy:

Ben Zine, Haroune Rachid
Sahin, Filiz Cinar
Czigány, Zsolt
Balázsi, Katalin
Balázsi, Csaba

Powiązania:

https://bibliotekanauki.pl/articles/353559.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

SiC dispersion
316L stainless steel
attrition milling
spark plasma sintering
composite

Opis:

In this work, the 316L austenitic steel based milled and sintered composites with 0.33 wt% and 1 wt% SiC ultra-fine particles addition have been prepared. The high efficient attrition milling provided an efficient size reduction of the 316L steel grains and homogeneous distribution of the SiC nanoparticles before sintering process. Spark plasma sintering (SPS) was used for compaction of milled powder mixtures. The effect of SiC addition on the milling efficiency and the structure of the composites have been studied. It was found that the amount of ceramic addition did not influence the efficiency of milling process, powder mixtures with flake like grains have been obtained. On the other hand, the intensive milling assured an optimal coverage of 316L stainless steel grains with submicron sized ceramic particles in both cases. The sintered composites showed high densities with the presence of small amount of closed porosities. Structural, mechanical and tribological examinations of 316L/SiC composites have been performed and presented.

Źródło:

Archives of Metallurgy and Materials; 2019, 64, 4; 1519-1526
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Enhanced sintering of austenitic stainless steel powder AISI 316l through boron containig master alloy addition
Aktywowane spiekanie proszków austenitycznej stali nierdzewnej AISI 316l poprzez dodatek mikroproszków zaprawy zawierającej bor

Autorzy:

Skałoń, M.
Kazior, J.

Powiązania:

https://bibliotekanauki.pl/articles/354268.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

spiekanie proszków
stali nierdzewnej
mikroproszki
stainless steel
AISI 316L
boron
dilatometry

Opis:

It is well known that boron is widely used in order to enhance sintering process for obtaining high density of sintered iron alloys. It was found that even a small amount of elemental boron added to iron based powder compacts, produces significant increase in densification rate upon formation of a liquid phase. Due to the attractive characteristic the use of boron has also been actively investigated for enhancing sintering stainless steels powders. In present research boron was added as a part of master alloy, which has been designed to provide the formation of wetting liquid phase, with accomplished characteristics for manufacturing controlled densification of sintered austenitic stainless steels powders AISI 316L. In this paper the influence of sintering atmosphere and the boron in 0,1; 0,2; 0,3 and 0,4 wt. % amount on the density, microstructure and selected properties of sintered austenitic stainless steels were reported. Green compacts obtained by cold compaction at 600 MPa reached densities around 6,2 g/cm3. The sintering process was carried out both in pure dry hydrogen atmosphere and in vacuum at temperature 1240 degree Celsius using dilatometer Netzsch DIL 402C. In order to interpret the influence of sintering atmosphere and boron content on the sintering behaviour of boron alloyed austenitic stainless steels powders during heating and isothermal holding, the evolution of the dilatometric curves have been discussed. The as-sintered microstructures were characterized under the SEM (EDS), while the pore morphology by the image analysis. In conclusion it could be affirmed that the addition of the master alloy containing boron to austenitic stainless steels powders, produces a permanent liquid phase that enhances densification compacts during sintering, in particular in hydrogen atmosphere. For this reason the results are promising from a technological point of view, because boron addition could extend applications of sintered stainless steel both with respect to lower sintering temperature and shorter time necessary to obtain well rounded pores which are desirable with respect to mechanical properties and corrosion resistance.
Bor jest skutecznym aktywatorem procesu spiekania proszków żelaza i proszków stopowych. stwierdzono, że nawet niewielki dodatek boru aktywuje proces spiekania w wyniku pojawienia się cieczy zwilżającej powierzchnię cząstek proszków, przyczyniając się do wzrostu stopnia zagęszczenia spieku. Dzięki interesującym charakterystykom bor stosowany jest również do aktywowania spiekania proszków stali nierdzewnych. Celem przeprowadzonych badań było wyjaśnienie wpływu dodatku boru w ilości 0,1; 0,2; 0,3 i 0,4% cież. wprowadzonego do mieszanki proszków w postaci mikroproszków zaprawy zawierającej bor, na kształtowanie sie mikrostruktury i właściwości spiekanych austenitycznych stali nierdzewnych AISI 316l. wypraski prasowano pod ciśnieniem 600 MPa uzyskując gęstość 6,2 g/cm3. spiekanie przeprowadzono w atmosferze suchego wodoru oraz w próżni, w temperaturze 1240 stopni Celsjusza, wykorzystując dylatometr Netzsch DIL 402c. w oparciu o przebieg krzywych dylatometrycznych analizowano wpływ dodatku boru oraz rodzaj zastosowanej atmosfery na przebieg procesu spiekania. Ponadto analizę mikrostruktury przeprowadzono w oparciu o obserwacje SEM (EDS), a morfologię porowatości w oparciu o analizę obrazu. Stwierdzono, że dodatek boru w postaci mikroproszków zaprawy przyczynia sie do aktywacji procesu spiekania w szczególności w atmosferze wodoru. Uzyskane wyniki są bardzo interesujące nie tylko z naukowego punktu widzenia ale również z praktycznego, ponieważ mogą przyczynić sie do zwiększenia zastosowań spiekanych austenitycznych stali nierdzewnych.

Źródło:

Archives of Metallurgy and Materials; 2012, 57, 3; 789-797
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Depth-profiles of corrosion properties of carbonitrided AISI 405 steel
Głębokościowe profile właściwości korozyjnych wegloazotowanej stali X6Cr13

Autorzy:

Jagielska-Wiaderek, K.

Powiązania:

https://bibliotekanauki.pl/articles/355027.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stal
węgloazotowanie
odporność korozyjna
corrosion
depth profile
stainless steel
carbonitrided
fluid flow

Opis:

Electrochemical polarisation characteristics of aisi 405 type stainless steel, carbonitrided in fluid flow, are presented. The evaluation of the corrosion resistance of carbonitrided stainless steel was carried out by using the so called progressive thinning method, consisting in determination of polarisation characteristics on increasingly-deeper situated regions of the top layer. This method made it possible to determine changes in particular corrosion parameters read out from potentiokinetic polarization curves, thus enabling the depth profiles of these parameters. the resistance of the aisi 405 steel against acid corrosion was determined in acidified 0.5m sulphate solutions having three different ph values, namely 1, 2 and 4. the thickness of the carbonitrided layer has been evaluated on the basis of the spectrophotometric analysis of carbon content and microhardness on the cross section of the surfacial layer.
W pracy przedstawiono elektrochemiczne charakterystyki polaryzacyjne stali x6cr13 (AISI 405) poddanej węgloazotowaniu w złożu fluidalnym. Ocenę odporności korozyjnej otrzymanej w wyniku obróbki cieplno-chemicznej warstwy węgloazotowanej przeprowadzono wykorzystując do tego celu metodę postępującego ścieniania, która polega na wykonywaniu polaryzacyjnych testów korozyjnych na coraz głębiej położonych obszarach warstwy wierzchniej. Metoda ta pozwoliła na określenie zmian poszczególnych charakterystycznych parametrów korozyjnych odczytywanych z potencjokinetycznych krzywych polaryzacji. Badania odporności stali x6cr13 na korozję ogólną wykonano w 0,5m roztworach siarczanowych o trzech wartościach ph: 1, 2 i 4. grubość powstałej węgloazotowanej warstwy oceniano na podstawie spektrofotometrycznej analizy zawartości węgla oraz mikrotwardości na przekroju poprzecznym obrobionego cieplnie materiału.

Źródło:

Archives of Metallurgy and Materials; 2012, 57, 2; 637-642
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Characterizations and evaluations on the bonding quality of molybdenum disilicides
Charakterystyka i ocena jakości połączeń wytworzonych przez MoSi2

Autorzy:

Lu, L. W.
Qin, W. G.

Powiązania:

https://bibliotekanauki.pl/articles/352922.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

MoSi2
stal nierdzewna 316L
spiekanie
316L stainless steel
sintering

Opis:

In this study, we proposed a new method using the spark plasma sintering technique to bond ceramics to alloys. MoSi2 and 316L stainless steel were chosen as sample materials and can be welded well with graded interlayers. We found that dense uniformed bondings were achieved because of the comparable coefficient of thermal expansion of the interlayers. Furthermore, such a compatibility between the graded interlayers prevented MoSi2 with low toughness from the occurrence of microcracks resulted from the residual stresses formed during cooling of the bondings.
W pracy zaproponowano nowa metodę łączenia ceramiki i stopów metodą spiekania iskrowo plazmowego SPS (spark plasma sintering). MoSi2 i stal nierdzewna 316L zostały wybrane jako przykładowe materiały i moga byc łaczone poprzez gradientowe warstwy pośrednie. Okazało się, że zwarte, jednorodne połączenia zostały uzyskane dzieki porównywalnemu współczynnikowi rozszerzalności cieplnej warstw pośrednich. Ponadto, tego rodzaju zgodnosc pomiedzy warstwami pośrednimi zapobiegła wystapieniu mikropęknięć w MoSi2, który jest materiałem o niskiej twardości, będacych wynikiem naprezen powstałych podczas chłodzenia połączeń.

Źródło:

Archives of Metallurgy and Materials; 2011, 56, 4; 1271-1271
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Corrosion behavior of austenitic stainless steels in road salt solutions

Autorzy:

Zatkalíková, Viera
Markovičová, Lenka
Valčuhová, Daniela

Powiązania:

https://bibliotekanauki.pl/articles/24202546.pdf

Data publikacji:

2022

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

road salt solution
stainless steel
pitting corrosion
corrosion resistance
potentiodynamic polarization
pitting potential

Opis:

Stainless steels are widely used for various automotive components. Some of them (e.g., parts of the exhaust system) are exposed to the external environment. In winter conditions, they are affected by chloride containing road salt solutions, which can lead to the local corrosion of these stainless steel parts. The presented paper is focused on the pitting corrosion resistance of two austenitic stainless steels (AISI 304 and AISI 316L) in 5 wt% and 10 wt% road salt solutions. The evaluation and comparison are based on the potentiodynamic polarization test method carried out at the temperature of 20 ± 2°C. The pitting potentials were determined from the polarization curves. Local corrosion damage of exposed surfaces caused by potentiodynamic polarization in the used solutions was observed by optical microscope. Experimental results confirmed a worse pitting corrosion resistance case, especially for AISI 304 stainless steel in 10 wt% road salt solution.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 71 (143); 72--77
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Characterization of Alumina-Titania Coatings Produced by Atmospheric Plasma Spraying on 304 SS Steel

Autorzy:

Djendel, M.
Allaoui, O.
Boubaaya, R.

Powiązania:

https://bibliotekanauki.pl/articles/1031278.pdf

Data publikacji:

2017-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

alumina-titania coatings
atmospheric plasma spraying
304 stainless steel
process parameters
SEM
microstructure

Opis:

The alumina-titania coatings produced by atmospheric plasma spraying are being developed for a wide variety of applications that require resistance to wear, erosion, cracking, and spallation. Consideration of parameters setting will develop reliable coatings with high performance properties for demanding coating application. Al₂O₃-3 wt% TiO₂ was used as the main coating. Ni 20%Cr₆Al powder was used as bond coat coating onto AISI 304 stainless steel substrate using Sulzer-Metco plasma spray system 9MC equipment.

Źródło:

Acta Physica Polonica A; 2017, 132, 3; 538-540
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Szczegóły kształtowania wióra przy toczeniu wykończeniowym stali nierdzewnej AISI 630
Detailed description of chip for aisi 630 stainless steel finishing

Autorzy:

Feldshtein, E.
Leksycki, K.

Powiązania:

https://bibliotekanauki.pl/articles/404428.pdf

Data publikacji:

2018

Wydawca:

Wydawnictwo AWART

Tematy:

stainless steel
finishing
chip
chip sha
obróbka na sucho
prędkość skrawania
tworzenie wióra

Opis:

W pracy przedstawiono wyniki badań rodzaju i kształtu wióra austenitycznej chromowo-niklowej stali nierdzewnej AISI 630 w procesie toczenia wykończeniowego. Badania realizowano w warunkach obróbki na sucho i z chłodzeniem przy zmiennych prędkościach skrawania i posuwach oraz stałej głębokości skrawania. W badaniach zastosowano metodę planowania badań Parameter Space Investigation (PSI), umożliwiającą realizację eksperymentu przy minimalizacji punktów doświadczeń. Ustalono, iż na rodzaj i kształt wióra nie wpływają prędkość skrawania oraz warunki chłodzenia. Podczas toczenia z chłodzeniem zmniejszają się wartości współczynnika zgrubienia wióra, a także intensywność wpływu prędkości skrawania i posuwu. Celem badań była obserwacja procesu kształtowania się wióra podczas toczenia wykończeniowego stali nierdzewnej AISI 630.
The paper presents the results of research on the type and chips shape of austenitic, chromium-nickel stainless steel AISI 630 in the finishing turning process. The tests were carried out under dry machining and cooling conditions at variable cutting speeds and feeds as well as constant depth of cut. The research method was used to plan the Parameter Space Investigation (PSI), enabling the experiment to be realized while minimizing experience points. It was found that the type and shape of the chip are not affected by the cutting speed and cooling conditions. During rolling with cooling, the coarseness coefficient values decrease, as well as the intensity of the cutting speed and feed influence. Observation of the process was carried out in order to get to know it better.

Źródło:

Obróbka Metalu; 2018, 2; 10-14
2081-7002

Pojawia się w:

Obróbka Metalu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Effect of Y2O3 Nanoparticles on Corrosion Study of Spark Plasma Sintered Duplex and Ferritic Stainless Steel Samples by Linear Sweep Voltammetric Method

Autorzy:

Shashanka, R.
Chaira, D.
Kumara Swamy, B. E.

Powiązania:

https://bibliotekanauki.pl/articles/351754.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

duplex stainless steel
pitting corrosion
spark plasma sintering
linear sweep voltammetry
ball milling

Opis:

The microstructure and corrosion properties of spark plasma sintered yttria dispersed and yttria free duplex and ferritic stainless samples were studied. Spark plasma sintering (SPS) was carried out at 1000°C by applying 50 MPa pressure with holding time of 5 minutes. Linear sweep voltammetry (LSV) tests were employed to evaluate pitting corrosion resistance of the samples. Corrosion studies were carried out in 0.5, 1 and 2 M concentration of NaCl and H₂SO₄solutions at different quiet time of 2, 4, 6, 8 and 10 seconds. Yttria dispersed stainless steel samples show more resistance to corrosion than yttria free stainless steel samples. Pitting potential decreases with increase in reaction time from 2 to 10 seconds. Similarly, as concentration of NaCl and H₂SO₄ increases from 0.5 M to 2 M the corrosion resistance decrements due to the availability of more Cl¯ and SO₄²¯ ions at higher concentration.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 2; 749-763
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Sintering and Microstructures of SUS 316L Powder Produced by 3D Printing Process

Autorzy:

Kim, W. J.
Nguyen, H.-H.
Kim, H. Y.
Nguyen, M.-T.
Park, H. S.
Kim, J.-C.

Powiązania:

https://bibliotekanauki.pl/articles/356018.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
3D printing
selective laser sintering
SUS 316L
flake powder

Opis:

Selective laser sintering (SLS) is a type of laminating sintering technique, using CO₂ laser with (metal, polymer, and ceramic) powders. In this result, the flake SUS 316L was used to achieve a high porous product, and compare to spherical type. After SLS, the porosity of flake-type sample with 34% was quite higher than that of the spherical-type one that had only 11%. The surface roughness of the flake SLS sample were also investigated in both inner and surface parts. The results show that the deviation of the roughness of the surface part is about 64.40μm, while that of the internal one was about 117.65μm, which presents the containing of high porosity in the uneven surfaces. With the process using spherical powder, the sample was quite dense, however, some initial particles still remained as a result of less energy received at the beneath of the processing layer.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 2B; 1215-1218
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Dobór materiału na noże do cięcia papryki. Badania tribokorozyjne
Material selection for knife to cutting bell pepper. Tribocorrosion research

Autorzy:

Zwierzycki, W.
Stachowiak, A.
Górny, K.

Powiązania:

https://bibliotekanauki.pl/articles/189700.pdf

Data publikacji:

2013

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

zużycie
pin-on-plate
stal odporna na korozję
tribokorozja
wear
stainless steel
tribocorrosion

Opis:

W artykule przedstawiono wyniki badań w zakresie doboru materiału na elementy do cięcia papryki. Jako kryterium doboru przyjęto minimalizację zużycia w warunkach jednoczesnych oddziaływań tarciowych i korozyjnych (tribokorozja). Badania wykonano na specjalistycznym stanowisku z węzłem modelowym typu pin-on-plate. Analizowano wpływ twardości stali martenzytycznej na intensywność ubytku materiału. Wyniki badań wykorzystano przy konstrukcji urządzenia do wydrążania papryki.
In this paper, the results of research into material selection for knives cutting bell pepper are presented. The main criterion of selection was minimum wear rate in conditions of simultaneous abrasion and corrosion (tribocorrosion). The research was carried out on the special pin-on-plate stand. Basically, the influence of martensitic steel hardness on loss of material was tested. The results of research was used to design device to cut bell peppers.

Źródło:

Tribologia; 2013, 5; 139-148
0208-7774

Pojawia się w:

Tribologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Pomiar XPS składu chemicznego warstwy wierzchniej powstałej na stali austenitycznej AISI 316L SS po elektrochemicznym polerowaniu w polu magnetycznym
XPS measurement of chemical composition of surface layer formed on austenitic AISI 316L SS after electrochemical polishing in magnetic field

Autorzy:

Rokosz, K.

Powiązania:

https://bibliotekanauki.pl/articles/154351.pdf

Data publikacji:

2011

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

elektrochemiczne polerowanie
stal nierdzewna
pole magnetyczne
XPS
electrochemical polishing
stainless steel
magnetic field

Opis:

W pracy przedstawiono możliwość wykorzystania metody XPS do analizy warstwy wierzchniej powstałej po elektrochemicznym polerowaniu w polu magnetycznym. Pokazano wynik XPS dla energii wiązania w przedziale od 0 do 1100 eV, celem wykrycia pierwiastków w warstwie wierzchniej. Przeprowadzono również badania XPS wysokiej rozdzielczości dla żelaza (Fe2p), chromu (Cr2p), molibdenu (Mo3d), siarki (S2p), fosforu (P2p) celem zaprezentowania możliwości analizy stanu chemicznego, jak i analizy ilościowej. Badania wykazały, że w warstwie wierzchniej powstałej po elektrochemicznym polerowaniu przy gęstości prądu 100 A/dm2 w polu magnetycznym o natężeniu 350 mT na powierzchni znajduje się więcej chromu (~10%) niż żelaza (~4%) oraz bardzo duża ilość tlenu (~72%). Widoczne piki w widmie XPS reprezentujące fosfor (~7%) siarkę (~5%) mogą świadczyć o obecności w warstwie wierzchniej zarówno fosforanów jak i siarczanów żelaza i/lub chromu. Wykryte zostały również piki odpowiadające magnezowi (~1%) oraz molibdenu (~1%). Chrom znajdujący się w warstwie wierzchniej najczęściej występuje w związkach chemicznych takich jak tlenki (CrO2), wodorotlenki (Cr(OH)3), fosforany (CrPO4 + noH2O) i siarczany (Cr2(SO4)3+ noH2O). Natomiast żelazo najczęściej występuje w tlenkach (Fe3O4, FeO, Fe2O3), wodorotlenkach FeOOH, fosforanach (FePO4 + noH2O, Fe3(PO4)2+ noH2O) oraz siarczanach (Fe2(SO4)3+ noH2O, FeSO4+ noH2O). Większość manganu znajdującego się w warstwie wierzchniej znajduje się na drugim stopniu utlenienia (Mn2+), a molibden na piątym (Mo5+) i szóstym (Mo6+) stopniu utlenienia.
X-ray photoelectron spectroscopy (XPS) is a quantitative spectroscopic technique that measures elemental composition, empirical formula and chemical state of surface. In XPS analysis, a sample is placed in an ultrahigh vacuum environment and exposed to a low-energy X-ray source. The X-ray excitation causes emission of photoelectrons from atomic shells of the elements present on the surface. The energy of these electrons is characteristic of the element from which it is emitted. The area under peaks in the spectrum is a measure of the relative amount of each element present, and the shape and position of the peaks reflect the chemical state for each element. XPS experiments were performed in an ultra-high-vacuum system with a base pressure of about 10-10 mbar. XPS measurements were taken using a SES2002 electron energy analyzer in conjunction with a monochromatized Al K? (h? = 1486.6 eV) X-ray source (Gammadata-Scienta). A total resolution of about 0.6 eV was obtained for the presented spectra. The spectra were recorded in normal emission. The binding energy of the spectrometer is calibrated by the position of the Fermi level on a clean metallic sample. The power supplies must be stable and of high accuracy. The Fermi level is determined by the work function of the electron energy analyzer and does not vary from sample to sample. In this paper the XPS method was used to find chemical composition of austenitic stainless steel AISI 316L surface electrochemically polished in a magnetic field. The samples for XPS measurements were prepared by mechanical polishing (water abrasive paper 60) and after it by electrochemical polishing in magnetic field (i=100 A/dm2, B=350 mT). Experiments were carried out in an electrolyte of 10% water content and the ratio of H2SO4 to H3PO4 equal to 4:6. The electrolyte temperature was within the range 65 š 5 oC and the processing time was about 3 min. The results show that after electrochemical polishing in a magnetic field there is more chromium (~10%) than iron (~4%) and big amount of oxygen (~72%) on the surface. There are visible peaks of phosphorus (~7%) and sulphur (~5%) in the XPS spectrum. There were also detected peaks of manganese (~1%) and molybdenum (~1%). Chromium in the surface layer occurs most frequently in oxides (CrO2), hydroxides (Cr(OH)3), chromium phosphates (CrPO4 + noH2O) and chromium sulphates (Cr2(SO4)3+ noH2O). Iron occurrs most frequently in oxides (Fe3O4, FeO, Fe2O3), hydroxides CrOOH, iron phosphates (FePO4 + noH2O, Fe3(PO4)2) and iron sulphates (Fe2(SO4)3+ noH2O, FeSO4+ noH2O). The main oxidation state of manganese in its compounds is +2 (Mn2+) and of molybdenum are +5 (Mo5+) and +6 sixth (Mo6+).

Źródło:

Pomiary Automatyka Kontrola; 2011, R. 57, nr 5, 5; 563-567
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Martensite Content of Cold-Worked AISI 304L Chromium-Nickel Austenitic Steel

Autorzy:

Opiekun, Z. A.
Pająk, D.

Powiązania:

https://bibliotekanauki.pl/articles/379888.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

austenitic stainless steel
longitudinal rolling
martensitic phase
stal austenityczna
walcowanie wzdłużne
faza martenzytyczna

Opis:

The paper presents the effect of plastic strain occurring at room temperature in annealed samples of AISI 304L austenitic chromium-nickel steel on content of strain-induced &alpha′ martensite in its structure. The strain was introduced by longitudinal rolling of the samples with constant strain rate of about 300 mm/s and relative cold work ranging from 5% to 90% It has been demonstrated that the share of &alpha′ martensite in microstructure of the steel determined by means of Feritscope FMP30 depends on the degree of cold work.

Źródło:

Archives of Foundry Engineering; 2014, 14, 1 spec.; 155-158
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Analysis of the Content of δ Ferrite in Pulse-Arc Welded Steel 304

Autorzy:

Gucwa, M.
Bęczkowski, R.
Grzyb, A.

Powiązania:

https://bibliotekanauki.pl/articles/380266.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

stainless steel
ferrite
welding arc
Schaeffler diagram
stal nierdzewna
ferryt
spawanie
diagram Schaefflera

Opis:

The paper presents the results of research on the effect of the welding arc type on the content of δ ferrite, in the welded joint of 304 grade stainless steel. Based on the commonly used Schaefler diagram, the content of δ ferrite in the welded joint was estimated, and then these results were verified by comparing them with results obtained on specimens welded by different welding arc types, including the pulse arc. The obtained investigation results indicate some discrepancies between calculations made by analytical methods and the fraction of δ ferrite measured on the prepared specimens.

Źródło:

Archives of Foundry Engineering; 2014, 14, 1 spec.; 131-134
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Przedwczesne uszkodzenie zmęczeniowe wału ze stali nierdzewnej gatunku X46Cr13
Premature fatigue damage to the stainless steel shaft grade X46Cr13

Autorzy:

Ładecki, Bogusław

Powiązania:

https://bibliotekanauki.pl/articles/1402112.pdf

Data publikacji:

2020

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

stal nierdzewna
zmęczenie materiału
badania nieniszczące
stainless steel
material fatigue
non-destructive testing

Opis:

W referacie omówiono przypadek przedwczesnego wystąpienia pęknięcia zmęczeniowego wału wykonanego ze stali nierdzewnej gatunku X46Cr13. Przeprowadzone badania wizualne, metalograficzne i pomiary twardości, wykazały występowanie błędów w obróbce termicznej elementu, które nie zostały stwierdzone poprzez wykonanie odpowiednich badań diagnostycznych wału.
The paper discusses the case of premature fatigue crack occurrence of a shaft made of stainless steel grade X46Cr13. Visual, metallographic and hardness tests carried out showed the occurrence of errors in the heat treatment of the element, which were not found by performing appropriate shaft diagnostic tests.

Źródło:

Badania Nieniszczące i Diagnostyka; 2020, 1-4; 28--31
2451-4462
2543-7755

Pojawia się w:

Badania Nieniszczące i Diagnostyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

A novel deep penetrating eddy current probe based on phase shifted fields and its application to inspection of defects

Autorzy:

Wu, Meixian
Zhang, Dongli
Wang, Chuanglong

Powiązania:

https://bibliotekanauki.pl/articles/221582.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

skin effect
penetration depth
austenitic stainless steel
eddy current probe
phase shifted fields

Opis:

Due to the skin effect of eddy currents, the depth of cracks which can be detected by the traditional eddy current probe is very limited. In order to improve the ability of eddy current probes to inspect deep cracks in metal thick-walled structures, a new eddy current probe using an excitation system with phase shifted fields was proposed. Its feasibility for detecting deep cracks was verified by simulation and experiments. The results showed that the penetration depth of eddy currents in austenitic stainless steel is effectively enhanced by using the new probe.

Źródło:

Metrology and Measurement Systems; 2020, 27, 2; 275-287
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

Segregation of elements in corrosion resistant castings of diversified wall thickness
Segregacja pierwiastków w odlewach kwasoodpornych o zróżnicowanych grubościach ścianek

Autorzy:

Malatyńska, P.

Powiązania:

https://bibliotekanauki.pl/articles/351137.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

segregation of elements
stainless steel
ferrite
carbides
segregacja pierwiastków
stal nierdzewna
ferryt
węgliki

Opis:

The segregation of elements in two corrosion resistant cast steel grades Cr18-Ni9-Mo, in castings of wall thickness: 7, 15 and 30 mm were performed. The results indicate the analogous path of curves of the content of Fe, Cr, Ni, Mo and C, in walls of various thickness. Decrease in the content observed in the delta ferrite Fe (2 to 3 wt. %), Ni (from 3.5 to 5 wt. %) and C (about 1 wt. %), where the Mo and Cr increased their content of 2% wt. %, and about 6% wt. respectively in the case of the two test cast. For the test steel Q2 with a carbon content 0.054 wt. % were found carbides in the form of white precipitates on the grain boundary of delta ferrite. This resulted in the occurrence of the peaks in the lines of the element distribution analysis especially for molybdenum, iron and carbon, as shown in the diagrams for various segregation of wall thickness.
Zbadano segregację pierwiastków w dwóch gatunkach staliwa kwasoodpornego Cr18-Ni9-Mo, bezpośrednio w odlewach o grubościach ścianek 7, 15 i 30 mm. Wyniki wskazują, analogiczny przebieg krzywych zawartości Fe, Cr, Ni, Mo i C, zebranych w różnych grubościach ścianek. Spadek zawartości odnotowano w ferrycie delta dla Fe (od 2 do 3% wag.), Ni (od 3,5 do 5% wag.) oraz C (około 1%), natomiast w przypadku Mo oraz Cr stwierdzono wzrost zawartości o odpowiednio 2% wag. i około 6% wag., w przypadku dwóch badanych staliw. Dla badanego staliwa Q1 o zawartości węgla 0,054% wag. stwierdzono występowanie węglików w postaci białych wydzieleń na granicy ferrytu delta. Spowodowało to występowanie pików na linii analizy rozkładu pierwiastków zwłaszcza dla molibdenu, zelaża oraz węgla, co zostało uwidocznione na wykresach segregacji dla różnych grubości ścianek.

Źródło:

Archives of Metallurgy and Materials; 2013, 58, 3; 775-778
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

The role of MW plasma treatment on the corrosion resistance of stainless steels
Rola obróbki plazmą MV na odporność korozyjną stali stopowych

Autorzy:

Kasprzyk, D.
Stypuła, B.
Kustrowski, P.
Drozdek, M.

Powiązania:

https://bibliotekanauki.pl/articles/354439.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

MW plasma carbonitriding
stainless steel
corrosion
XPS
obróbka plazmą MV
stale stopowe
korozja

Opis:

Two stainless steels (S32404 duplex and S32615 austenitic) were subject to the carbon/nitrogen plasma treatment to examine the role of alloy composition and structure in the behavior of surface during modification. The modification process was performed in the electron cyclotron resonance (ECR) micro wave plasma system, with the frequency of 2.45 GHz and the generator power of 350 W, and with the use of reactive gas mixtures containing CH4 and N2, at the low temperature of 400°C and under pressure of 0.2Tr. The treated surface was analyzed by means of X-ray photoelectron spectroscopy (XPS). The corrosion resistance of the samples was determined on the basis of LSV polarization curves in 3% sodium chloride solution at 37°C. The treated steel surfaces showed a higher tendency for passivation and higher pitting corrosion resistance compared to the non-modified surfaces.
Obróbkę powierzchni wysokostopowych stali chromowo-niklowej typu duplex S32404 i austenitycznej S32615 przeprowadzono poprzez węgloazotowanie przy użyciu techniki próżniowej z mikrofalowym wspomaganiem plazmowym o częstotliwości 2.45GHz i mocy generatora 350W. Zastosowano reaktywną mieszaninę gazową zawierającą CH4 i N2 w warunkach niskiego ciśnienia 0.2 Tr. przy niskiej temperaturze 400°C. Oceniono wpływ składu chemicznego i struktury stopów na tworzącą się war- stwę wierzchnią podczas obróbki. Strukturę powierzchni analizowano za pomocą rentgenowskiej spektroskopii fotoelektronów (XPS). Odporność korozyjną próbek określano na podstawie krzywych polaryzacyjnych LSV w 3% roztworze chlorku sodu przy temperaturze 37°C. Powierzchnie stali poddane obróbce wykazały wyższą skłonność do pasywacji w oraz podwyższały odporność na korozję wżerową w porównaniu z powierzchniami niemodyfikowanymi.

Źródło:

Archives of Metallurgy and Materials; 2013, 58, 4; 1169-1175
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Hot Formability of Heat-Resistant Stainless Steel X15CrNiSi20-12

Autorzy:

Kawulok, R.
Schindler, I.
Navrátil, H.
Ševčák, V.
Sojka, J.
Konečná, K.
Chmiel, B.

Powiązania:

https://bibliotekanauki.pl/articles/355196.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

heat-resistant stainless steel
hot tension test
nil strength temperature
nil ductility temperature

Opis:

High-temperature plastic properties of heat-resistant stainless steel X15CrNiSi20-12 were assessed on the basis of hot tensile tests and nil strength tests. The results were supported by metallographic analyses using SEM and EDX analysis. The formability of the investigated steel can be divided into roughly three temperature areas. In the temperature range of 900°C to about 1050°C, formability was negatively affected by precipitation of carbide particles at grain boundaries. As the temperature rose to 1200°C, these particles dissolved, resulting in an increase in formability. Further temperature increases resulted in a relatively steep drop in formability caused by overheating of the material. The nil ductility temperature of 1280°C and the nil-strength temperature of 1362°C were determined. The Plastic and strength properties of the investigated material were compared with the deformation behavior of the reference steel X5CrNi18-10, which shows a significantly wider range of suitable forming temperatures.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 2; 727-734
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Laser welding of panel joints of stainless steel heat exchangers
Spawanie laserowe złączy panelowych wymienników ciepła ze stali nierdzewnej

Autorzy:

Lisiecki, Aleksander
Wójciga, Piotr
Kurc-Lisiecka, Agnieszka
Barczyk, Michał
Krawczyk, Sonia

Powiązania:

https://bibliotekanauki.pl/articles/115055.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

spawanie laserowe
złącze panelowe
stal nierdzewna
stal austenityczna
laser welding
pillow plate
stainless steel
austenitic steel

Opis:

Results of study on the laser welding process of pillow plates heat exchangers are presented in the article. The influence of basic parameters of CO2 laser welding on the quality of overlap joints of AISI 304 stainless steel plates 2.0 and 4.0 mm thick was determined. The range of optimal parameters of welding, providing the highest quality and high mechanical performance of the test joints was determined. The technological conditions elaborated during the study were applied for manufacturing of the real pillow plates heat exchangers with dimensions of 1.5x1.5 m.
W artykule przedstawiono wyniki badań procesu spawania laserowego złączy panelowych wymienników ciepła. Określono wpływ podstawowych parametrów spawania laserem gazowym CO2 na jakość złączy zakładkowych blach ze stali austenitycznej AISI 304 o grubości 2,0 i 4,0 mm. Określono zakres optymalnych parametrów spawania zapewniających najwyższą jakość i wysoką wytrzymałość złączy. Opracowane warunki technologiczne spawania laserowego zastosowano do wytwarzania partii panelowych wymienników ciepła o wymiarach 1,5x1,5 m.

Źródło:

Welding Technology Review; 2019, 91, 7; 7-19
0033-2364
2449-7959

Pojawia się w:

Welding Technology Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Investigation of corrosion rate of X55CrMo14 stainless steel at 65% nitrate acid at 348 K

Autorzy:

Lipiński, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/1839535.pdf

Data publikacji:

2021

Wydawca:

Stowarzyszenie Menedżerów Jakości i Produkcji

Tematy:

stal
stal nierdzewna
korozja
szybkość korozji
profil chropowatości
steel
stainless steel
corrosion
corrosion rate
profile roughness

Opis:

A number of factors determine the mechanical, but also physical and chemical properties. One of the most important are the steel microstructure and its working conditions. A few corrosion processes in crevices and awkward corners can be avoided at the design stage (low roughness parameters, roundsection and other). But still the construction material is exposed to corrosion. These steels often come into contact with an aggressive environment based on nitric acid. Stainless steel is more and more often used in many sectors of industry. The purpose of this article is to investigate corrosion resistance in different time (48, 96, 144, 192, 240, 288, 336, 384 and 432 hours) using weight loss and profile roughness parameters of martensitic steel in grade X55CrMo14 in nitric acid 65% pure-basic at temperature 348 K. Corrosion tests show that the tested steel in nitric acid as a corrosive environments is characterized through continuous corrosion process whose measure may be surface roughness.

Źródło:

Production Engineering Archives; 2021, 27, 2; 108-111
2353-5156
2353-7779

Pojawia się w:

Production Engineering Archives

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Effect of Heat Treatment on the Microstructures 20%Cr-21%Ni-5%Si Cast Steel

Autorzy:

Kalandyk, B.
Kasińska, J.
Olejnik, E.

Powiązania:

https://bibliotekanauki.pl/articles/381678.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

austenitic cast steel
stainless steel
cast steel microstructure
heat treatment
staliwo austenityczne
stal nierdzewna
mikrostruktura staliwa
obróbka termiczna

Opis:

The study describes the effect of heat treatment on the microstructure of cast high-alloyed 20%Cr-21%Ni-5%Si steel. It has been found that the microstructure of the tested material in the initial state consists of an austenitic matrix and precipitates rich in Si, Cr, Ni and Mn, characterized by different morphology and distributed mainly along the grain boundaries. The conducted heat treatment (after solutioning at: 1060, 1100 and 1200ºC) has changed both morphology and chemical composition of the precipitates. Significant reduction in the Si and Ni content and slight increase in the Cr content, especially after solutioning at 1200°C, combined with a simultaneous decrease in the hardness of the precipitates was evidenced.

Źródło:

Archives of Foundry Engineering; 2015, 15, 2 spec.; 39-42
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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