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

作者：Liu, F.; Dan, W. J.^*; Zhang, W. G.

来源：Journal of Materials Engineering and Performance, 2017, 26(6): 2721-2728.

DOI：10.1007/s11665-017-2715-6

• mechanical twining
• strain hardening
• stress state
• TWIP steel

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.

• 出版日期2017-6
• 单位上海交通大学