The Effects of Stress State on the Strain Hardening Behaviors of TWIP Steel

被引：3
|
作者：
Liu, F. [1 ,2 ]
Dan, W. J. [1 ,2 ]
Zhang, W. G. [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Engn Mech, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Innovat Ctr Adv Ship & Deep Sea Explorat, Shanghai 200240, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 06期
基金：
中国国家自然科学基金;
关键词：
mechanical twining; strain hardening; stress state; TWIP steel; INDUCED PLASTICITY STEELS; STACKING-FAULT ENERGY; TENSILE DEFORMATION-BEHAVIOR; TEMPERATURE-DEPENDENCE; CONSTITUTIVE MODEL; MANGANESE CONTENT; AUSTENITIC STEEL; RATE SENSITIVITY; MICROSTRUCTURE; MECHANISMS;
D O I：
10.1007/s11665-017-2715-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Twinning-Induced Plasticity (TWIP) steels have received great attention due to their excellent mechanical properties as a result of austenite twinning during straining. In this paper, the effects of stress state on the strain hardening behaviors of Fe-20Mn-1.2C TWIP steel were studied. A twinning model considering stress state was presented based on the shear-band framework, and a strain hardening model was proposed by taking dislocation mixture evolution into account. The models were verified by the experimental results of uniaxial tension, simple shear and rolling processes. The strain hardening behaviors of TWIP steel under different stress states were predicted. The results show that the stress state can improve the austenite twining and benefit the strain hardening of TWIP steel.
引用
收藏
页码：2721 / 2728
页数：8
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