Topic
Martensitic stainless steel
About: Martensitic stainless steel is a research topic. Over the lifetime, 2940 publications have been published within this topic receiving 28329 citations.
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TL;DR: In this article, the effects of tempering temperature and time on the microstructure, mechanical and corrosion properties of AISI420 have been studied and the experimental results showed that the austeitizing temperature significantly affects mechanical properties.
246 citations
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25 Mar 2005-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, a linear correlation between the shear data and tensile data was established for yield and ultimate tensile strength for different materials; mild steel, pure Al, Zn, brass (Cu-30% Zn by wt.), Al 6061, Austenitic and Martensitic stainless steels were evaluated.
Abstract: The evaluation of mechanical properties like yield and ultimate tensile strengths from shear–punch tests is important when the availability of material is limited. A shear–punch test setup was built in our laboratory and the mechanical properties for different materials; mild steel, pure Al, Zn, brass (Cu–30% Zn by wt.), Al 6061, Austenitic and Martensitic stainless steels were evaluated. A new method using 1% offset criterion in conjunction with normalized shear–punch curves was used to measure the shear yield strength. A linear correlation between the shear data and tensile data was established for yield and ultimate strengths. The variation of the yield and ultimate shear strength was studied as a function of the sample thickness and die–punch clearance for soft, medium and high strength materials.
232 citations
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TL;DR: In this article, the effect of the austenite content on impact toughness was evaluated using Charpy tests and the results indicated that the effect was associated with transformation-induced plasticity (TRIP).
219 citations
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TL;DR: In this article, the influence of low temperature plasma nitriding on the wear and corrosion resistance of AISI 420 martensitic stainless steel was investigated, and the wear resistances of the nitrided samples were determined with a ball-on-disc wear tester.
Abstract: The influence of low temperature plasma nitriding on the wear and corrosion resistance of AISI 420 martensitic stainless steel was investigated. Plasma nitriding experiments were carried out with DC-pulsed plasma in 25% N2 + 75% H2 atmosphere at 350 °C, 450 °C and 550 °C for 15 h. The composition, microstructure and hardness of the nitrided samples were examined. The wear resistances of plasma nitrided samples were determined with a ball-on-disc wear tester. The corrosion behaviors of plasma nitrided AISI420 stainless steel were evaluated using anodic polarization tests and salt fog spray tests in the simulated industrial environment. The results show that plasma nitriding produces a relatively thick nitrided layer consisting of a compound layer and an adjacent nitrogen diffusion layer on the AISI 420 stainless steel surface. Plasma nitriding not only increases the surface hardness but also improves the wear resistance of the martensitic stainless steel. Furthermore, the anti-wear property of the steel nitrided at 350 °C is much more excellent than that at 550 °C. In addition, the corrosion resistance of AISI420 martensitic stainless steel is considerably improved by 350 °C low temperature plasma nitriding. The improved corrosion resistance is considered to be related to the combined effect of the solid solution of Cr and the high chemical stable phases of ɛ-Fe3N and αN formed on the martensitic stainless steel surface during 350 °C low temperature plasma nitriding. However, plasma nitriding carried out at 450 °C or 550 °C reduces the corrosion resistance of samples, because of the formation of CrN and leading to the depletion of Cr in the solid solution phase of the nitrided layer.
202 citations
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TL;DR: In this paper, an AISI 410 martensitic stainless steel was plasma nitrided at a temperature of 420°C, 460°C or 500°C for 20h.
199 citations