Tensile mechanical properties, deformation mechanisms, fatigue behaviour and fatigue life of 316H austenitic stainless steel: Effects of grain size

2020 ◽  
Vol 44 (2) ◽  
pp. 533-550
Author(s):  
Lei Zhao ◽  
Xueyan Qi ◽  
Lianyong Xu ◽  
Yongdian Han ◽  
Hongyang Jing ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Stainless Steel ◽  
Fatigue Life ◽  
Austenitic Stainless Steel ◽  
Fatigue Behaviour ◽  
Deformation Mechanisms

scholarly journals Influence of Temperature on Mechanical Properties of Nanocrystalline 316L Stainless Steel Investigated via Molecular Dynamics Simulations

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2803 ◽  
Author(s):  
Abdelrahim Husain ◽  
Peiqing La ◽  
Yue Hongzheng ◽  
Sheng Jie
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Grain Size ◽  
Stainless Steel ◽  
Molecular Dynamics Simulations ◽  
Yield Stress ◽  
316L Stainless Steel ◽  
Deformation Mechanisms ◽  
Grain Sizes ◽  
Dynamics Simulations

Molecular dynamics simulations were conducted to study the mechanical properties of nanocrystalline 316L stainless steel under tensile load. The results revealed that the Young’s modulus increased with increasing grain size below the critical average grain size. Two grain size regions were identified in the plot of yield stress. In the first region, corresponding to grain sizes above 7.7 nm, the yield stress decreased with increasing grain size and the dominant deformation mechanisms were deformation twinning and extended dislocation. In the second region, corresponding to grain sizes below 7.7 nm, the yield stress decreased rapidly with decreasing grain size and the dominant deformation mechanisms were grain boundary sliding and also grain rotation. The yield strength and Young’s modulus were both found to decrease with increasing temperature, which increased the interatomic distance and thereby decreased the interatomic bonding force.

Effect of Heat Treatment on Deformation Induced Martensite in Austenitic Stainless Steel

2012 ◽  
Vol 510-511 ◽  
pp. 214-220
Author(s):  
Aamer Nusair Khan ◽  
S.K. Mehmood ◽  
K. Mehmood
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Texture Component ◽  
Structural Control ◽  
Aisi 304 ◽  
Heat Treated ◽  
Steel Aisi

Austenitic stainless steel with submicron gain size has been attracted due to fine structural control of mechanical properties. In order to achieve a submicron grain size, meta-stable austenitic steel AISI 304 is severely cold deformed and then annealed to different heat treatment cycles. The heat treated samples were then tested for metallurgical phase change, texture components and hardness. It was observed that at 750°C, all the martensite transformed completely into austenite. Further, at the same temperature, it was observed that the texture component {221}<232> was the dominant texture component.

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