简介概要

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.

详情信息展示

Hot compression deformation behavior of the Mg-Al-Y-Zn magnesium 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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