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

被引：0
作者：
FANG Xiya YI Danqing WANG Bin WU Chunping ZHANG Hong School of Materials Science and Engineering
机构：
来源：
Rare Metals | 2008年 / 02期
关键词：
Mg-Al-Y-Zn magnesium alloy; thermal deformation simulation; deformation activation energy; dynamic recrystallization;
D O I：
暂无
中图分类号：
TG115.53 [];
学科分类号：
080502 ;
摘要：
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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页码：121 / 126
页数：6
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