Constitutive Relationships of Hot Stamping Boron Steel B1500HS
Constitutive relationship of boron steel is one of the most necessary mathematical models in the numerical simulation of hot stamping.It describes the relationship of the flow stress with strain,strain rate and temperature.In order to simulate hot stamping and get the approximately correct simulation results,the specimens are designed and tested to build the constitutive equations of boron steel B1500HS.Isothermal uniaxial tensile tests are performed at 600-900℃ with the strain rate of 0.01 s-1,0.1 s-1,1.0 s-1 and 10 s-1 by the Gleeble thermo- mechanical simulator,and the true stress-strain curves at the relative conditions are gained.The experimental results show that,the flow stress rises with the decrease of the deformation temperature and with the increase of the strain rate.The constitutive equations depending on the strain,strain rate and temperature are attained by the regression analysis of experimental data.The comparison results show that the computational data using the constitutive relationships are well consistent with the experimental data.
Constitutive Relationship Hot Forming Boron Steel Tensile Testing
Huiping LI Lianfang HE Guoqun ZHAO Lei ZHANG
School of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao 26 Key Laboratory for Liquid-Solid Structure Evolution & Processing of Materials of Ministry of Educati
国际会议
沈阳
英文
1118-1124
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）