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Wyświetlanie 1-15 z 74
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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 (Fe0.6C0.4)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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Wyświetlanie 1-15 z 74

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