Microstructure and Texture Evolution of Magnesium Alloys During Electropulse Treatment

被引:0
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作者
Jie Kuang
Xiaohui Li
Xiaoxin Ye
Jianguo Tang
Haifeng Liu
Jeff Wang
Guoyi Tang
机构
[1] Tsinghua University,Advanced Materials Institute, Graduate School at Shenzhen
[2] Tsinghua University,Key Laboratory for Advanced Materials of Ministry of Education, School of Materials Science and Engineering
[3] Guangzhou Research Institute of Non-ferrous Metals,School of Materials Science and Engineering
[4] Central South University,undefined
[5] General Motors China Science Lab,undefined
[6] General Motors,undefined
关键词
Shear Band; Cold Rolling; Pole Figure; Nucleus Growth; Texture Modification;
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中图分类号
学科分类号
摘要
Two magnesium alloys AZ31 and ZEK100 were subjected to cold rolling followed by electropulse treatment (EPT) for different durations in order to investigate the microstructure and texture evolution during EPT. AZ31 started to recrystallize once the electropulse current was applied. ZEK100, in contrast, exhibited two-stage recrystallization before which an evident recovery process occurred. Texture modification was achieved in both alloys after recrystallization, with AZ31 exhibiting a weak RD-split texture and ZEK100 a TD-spread one. The results were discussed with particular emphasis on the distinct impact of electropulse current on the recrystallization texture formation. It is proposed that the promotion of the nucleation of non-basal-oriented grains, the change of the relative mobility of grain boundaries, and the non-basal dislocation activity in the continuous recrystallization are responsible for the texture modification.
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页码:1789 / 1804
页数:15
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