Deformation Behavior of 10Mn Steels at Elevated Temperature
High temperature tensile and compression experiment of mid-Mn steel were carried out on a Gleeble-3500 thermal mechanical simulator.The effects of deformation temperature (600~1300 oC) and strain rate (0.001~10 s-1) on hot ductility and deformation behavior of the steel were studied.Analysis of high temperature compression experimental data shows that the deformation conditions have significant influence on stress-strain curves of the steels.The curve shows obvious dynamic recrystallization (DRX) style at high temperature and low strain rate,while they are dynamic recovery (DRV) or work-hardening style at low temperature and high strain rate.The deformation resistance decreases with deformation temperature increasing and increases with the strain rate increasing.The peak stress and peak strain decrease with deformation temperature increasing and strain rate decreasing,which demonstrates that DRX tends to occur at higher deformation temperature and lower strain rate.The hot deformation activation energy Qdef of 10Mn steel is 403.569 kJ/mol.The austenite hot deformation equations of 10Mn steels is: Z10Mn=(3)exp(403569/8.3147)=3.95×1014sinh(0.012σp)4.088
10Mn steel compression deformation behavior hot deformation activation energy austenite hot deformation equations constitutive relationship
ZHANG Mei GAN Bin LI Haiyang LI Zhengyu ZHONG Yong WANG Li LI Lin
School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China State Key Laboratory of Development and Application Technology of Automotive Steels,Baosteel Group,S
国际会议
成都
英文
302-305
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）