Dynamic Properties of Si-Mn TRIP Steels at High Strain Rate

摘要：

　　Using Si-Mn DP steels as the reference system,Si-Mn TRIP steels were investigated in the present work to study the microstructure evolution and dynamic mechanical properties under high strain-rate deformations.Results show that the tensile strength increased with increasing strain rate and the fracture elongation increased due to the adiabatic heating in DP steels.In TRIP steels,the tensile strength increased with increasing strain rate while the fracture elongation decreased at first and then increased.However,the ductility of TRIP steels under high strain rates was relatively low than that of quasi-static due to the effect of gradual transformation of retained austenite was inhibited.The adiabatic heating produced during high strain-rate deformation was higher in TRIP steels and it is suggested that the extra heat originated from the latent heating of martensitic transformation in TRIP steels during dynamic deformation.

关键词： TRIP steels DP steels Dynamic mechanical properties High strain rate Adiabatic heating

作者: Zhu Chaoqun Zheng Weisen He Yanlin Li Lin

作者单位: School of Material Science and Engineering,Shanghai University,Shanghai,200072,China

会议类型: 国际会议

会议名称: The 2nd International Symposium on Automobile Steel (第二届汽车用钢生产及应用技术国际研讨会)

会议地点: 鞍山

会议语种:英文

页码: 139-142

在线出版日期: 2013-05-21（万方平台首次上网日期，不代表论文的发表时间）