Development and Application of Constitutive Equation for the Hot Extrusion of 7A04 Aluminum Alloy
The high-temperature deformation behavior of 7A04 aluminum alloy was investigated by hot compression tests in the temperature range of 300-450℃ and the strain rate range of 0.01-10 s-1.The true stress-true strain curves show that the stress level decreases with increasing temperature and decreasing strain rate.A modified JC model was developed by means of fitting the experimental data and optimizing the material constants.Then,based on the established constitutive equation of 7A04,the hot extrusion process of fuze shell was analyzed using DEFORM-3D and the flow law of metal was obtained.Finally,the validity of this research results was proved by practice,which provides some references for engineering application.
7A04 Aluminum Alloy Constitutive Equation Hot Extrusion Numerical Simulation
Yanhong Xiao Zhenshan Cui Cheng Guo
National Engineering Research Center for Die and Mold CAD,School of Materials Science and Engineerin School of Mechanical Engineering,Xian Jiaotong University,Xian 710049,China
国际会议
沈阳
英文
616-622
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）