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:

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: 5.

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: 6.

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: 7.

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: 8.

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: 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

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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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