Effect of Strain Rate on Mechanical Properties of Fe-30Mn-3Si-4Al TWIP Steel

摘要：

　　Influence of strain rate on mechanical properties of Fe-30Mn-3Si-4Al TWIP steel was studied by compression experiments,indicating that TWIP steel has strain rate softening effect,strain rate insensitivity,and also strain rate hardening effect.According to strain rate sensitivity m changing with strain rate,effect of strain rate on TWIP steel mechanical properties can be divided into three stages:quasi-static stage with strain rate ranging from 10-3 to 10(°) s-1; high-strain rate stage with strain rate ranging from 701 to 5108 s-1; super-high-strain rate stage with strain rate ranging from 10335 to 30147 s-1.Adiabatic temperature rise tends to increase with strain rate.Strain hardening exponent is divided into three parts:dislocation strengthening stage,twinning strengthening stage and thermal softening stage.

关键词： TWIP steel SHPB Strain rate sensitivity Strain hardening exponent

作者: Zhiping Xiong Leigang Gu Yeke Wang Jicheng Zhao Weiping Bao Xueping Ren

作者单位: Cold roiling Department, CISDI Engineering CO., Ltd., Chongqing 401122, P.R.China School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 1

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 1018-1022

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）