Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

被引：0
作者：
Yi Xiong
Tiantian He
Yan Lu
Fengzhang Ren
Alex A. Volinsky
Wei Cao
机构：
[1] Henan University of Science and Technology,School of Materials Science and Engineering
[2] Collaborative Innovation Center of Nonferrous Metals,Department of Mechanical Engineering
[3] University of South Florida,Nano and Molecular Systems Research Unit
[4] University of Oulu,undefined
来源：
Journal of Materials Engineering and Performance | 2018年 / 27卷
关键词：
AISI 316LN austenitic stainless steel; deformation-induced martensite transformation; mechanical properties; microstructure;
D O I：
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摘要：
Uniaxial tensile tests were conducted on AISI 316LN austenitic stainless steel from − 40 to 300 °C at a rate of 0.5 mm/min. Microstructure and mechanical properties of the deformed steel were investigated by optical, scanning and transmission electron microscopies, x-ray diffraction, and microhardness testing. The yield strength, ultimate tensile strength, elongation, and microhardness increase with the decrease in the test temperature. The tensile fracture morphology has the dimple rupture feature after low-temperature deformations and turns to a mixture of transgranular fracture and dimple fracture after high-temperature ones. The dominating deformation microstructure evolves from dislocation tangle/slip bands to large deformation twins/slip bands with temperature decrease. The deformation-induced martensite transformation can only be realized at low temperature, and its quantity increases with the decrease in the temperature.
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页码：1232 / 1240
页数：8
相关论文
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