Annealing Behavior of Solution Treated and Aged AI-0.2wt% Sc Deformed by ARB

摘要：

The effect of prior and subsequent precipitation on recrystallization behavior during the isothermal annealing of an Al-0.2%wt.Sc alloy heavily deformed by accumulative roll bonding (ARB) up to 10 cycles at ambient temperature was investigated. Three kind of different microstructures, i.e., solution treated one, 300℃ preaged one and 400℃ pre-aged one, were prepared as the starting structures for the ARB process. It is found that precipitation pinning effect of AbSc suppresses recrystallization and especially the 400℃ pre-aging was effective to stabilize the ultrafine grained structure of the matrix. Dissolution of pre-aging Al3Sc precipitates was suggested by reprecipitation during annealing of the ARB processed specimens at around 300℃.

作者: Ehsan Borhani Hamidreza Jafarian Hiroki Adachi Daisuke Terada Nobuhiro Tsuji

作者单位: Department of Materials Science and Engineering,Kyoto University,Yoshida Hommachi,Sakyo-Ku,Kyoto 606-8501,Japan

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 211-216

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）