Hot compression deformation behavior of the Mg-Al-Y-Zn magnesium alloy
来源期刊：Rare Metals2008年第2期
论文作者：FANG Xiya YI Danqing WANG Bin WU Chunping ZHANG Hong School of Materials Science and Engineering,Central South University,Changsha ,China
文章页码：121 - 126
摘 要：<正>The hot deformation behavior of a Mg-Al-Y-Zn magnesium alloy was investigated by hot compressive testing on a Gleeble-1500 thermal simulator at the temperature ranging from 523 to 673 K with the swain rate varying from 0.001 to 1 s-.The relationships among flow stress, strain rate,and deformation temperature were analyzed,and the deformation activation energy and stress exponent were calculated.Micro- structure evolution of the alloy under different conditions was examined.The results indicated that the maximum value of the flow stress in- creased with the decrease of deformation temperature or the increase of strain rate.Under the present deformation conditions,dynamic re- crystallization （DRX） occurred in the alloy,which was the main softening mechanism during deformation at elevated temperature.The de- formation temperature and strain had significant effects on the microstructure of the alloy.
FANG Xiya YI Danqing WANG Bin WU Chunping ZHANG Hong School of Materials Science and Engineering,Central South University,Changsha 410083,China
摘 要：<正>The hot deformation behavior of a Mg-Al-Y-Zn magnesium alloy was investigated by hot compressive testing on a Gleeble-1500 thermal simulator at the temperature ranging from 523 to 673 K with the swain rate varying from 0.001 to 1 s-.The relationships among flow stress, strain rate,and deformation temperature were analyzed,and the deformation activation energy and stress exponent were calculated.Micro- structure evolution of the alloy under different conditions was examined.The results indicated that the maximum value of the flow stress in- creased with the decrease of deformation temperature or the increase of strain rate.Under the present deformation conditions,dynamic re- crystallization （DRX） occurred in the alloy,which was the main softening mechanism during deformation at elevated temperature.The de- formation temperature and strain had significant effects on the microstructure of the alloy.
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