Dynamic modeling of twin roll casting AZ41 magnesium alloy during hot compression processing

• 作 者: 王敏 王守仁 S.BKANG J.H.CHO 王砚军
• 机 构: School of Materials Science and Engineering,Shandong University,School of Mechanical Engineering,Uni
• 出 处: Transactions of Nonferrous Metals Society of China
• 发表日期: 2010年S2期
• 关键词: magnesium hardening validity moderate characterize sharp softening Zener deforme

A dynamic material model of Mg-4.51Al-1.19Zn-0.5Mn-0.5Ca(AZ41,mass fraction,%)magnesium alloy was put forward.The results show that the dynamic material model can characterize the deformation behavior and microstructure evolution and describe the relations among flow stress,strain,strain rates and deformation temperatures.Statistical analysis shows the validity of the proposed model.The model predicts that lower deformation temperature and higher strain rate cause the sharp strain hardening. Meanwhile,the flow stress curve turns into a steady state at high temperature and lower strain rate.The moderate temperature of 350 ℃and strain rate of 0.01 s-1 are appropriate to this alloy.

A dynamic material model of Mg-4.51Al-1.19Zn-0.5Mn-0.5Ca (AZ41, mass fraction,%) magnesium alloy was put forward. The results show that the dynamic material model can characterize the deformation behavior and microstructure evolution and describe the relations among flow stress, strain, strain rates and deformation temperatures. Statistical analysis shows the validity of the proposed model. The model predicts that lower deformation temperature and higher strain rate cause the sharp strain hardening. steady state at high temperature and lower strain rate. moderate temperature of 350 ° C and strain rate of 0.01 s-1 are appropriate to this alloy.