Isochronal Aging Hardening of the Mg-8Gd-3Y-0.5Zr Alloy after Cold Rolling
By transmission electron microscopy (TEM) and optical microscopy (OM),the isochronal aging hardening law and microstructure have been studied for the Mg-8Gd-3Y-0.5Zr alloy after cold rolling.During isochronal aging process (heated from room temperature to 500℃ with the heating rate of 1℃/min),there are two peak hardness temperature points,which are corresponding to the large number of precipitation of β′ and β phases,and the peak aging time of the alloy substantially decreased with the increase of deformation reduction.The β″ phases started to precipitate at temperatures of 145℃,134℃,127℃ and 124℃ in the alloy after cold rolling with the reduction of 0%,8%,15% and 22%.The heating rate greatly affected the starting precipitation of metastable phases.β″ phases started to precipitate at temperatures of 109℃ and 124℃ with the reduction of 22% and with the heating rates of 3℃ /min and 30℃ /min.
Mg-Re alloys Mg-Gd-Y-Zr alloy Cold roll Aging hardening Microstructure
Yancai Xie Dejiang Li Xiaoqin Zeng Xin Su Wenjiang Ding Bin Chen
The State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University , 800 Dongchuan RD The State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University , 800 Dongchuan RD
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
333-339
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）