材料工程Issue(11)：59-64,6.
B2 Fe-Al合金中与空位有关的弛豫
Relaxation Correlated to Vacancies in B2 Fe-A1 Alloys
摘要
Abstract
The internal friction behaviors of air-cooled B2 Fe-A1 alloys were examined to understand the movement of atomic defects. Two internal friction peaks were found at around 210℃ (P1 peak) and 410℃ (P2 peak), respectively. Both the peaks showed relaxational nature and they are correlated to the concentration of vacancies. It is suggested that the P1 peak originates from the reorientation of the divacancies (V_(Fe)V_(Al)), the P2 peak from the interactions between antisite atoms and Fe vacancies. For the Fe-rich B2 Fe-Al alloys, the P2 peak is attributed to the reorientation of the triple defects (2V_(Fe)Fe_(Al)) ; for the Al-rich alloys, however, it is caused by the stress-induced migration of Al antisite atoms among the Fe vacancies.关键词
B2/Fe-Al合金/内耗/空位/反位置原子Key words
B2 Fe-Al alloy/ internal friction/ vacancy/ antisite atom分类
矿业与冶金引用本文复制引用
吴杰,韩福生,崔洪芝,迟静,姚树玉..B2 Fe-Al合金中与空位有关的弛豫[J].材料工程,2009,(11):59-64,6.基金项目
国家863计划(2006AA06Z381)和山东科技大学"春蕾计划"(2008AZZ082)资助项目 （2006AA06Z381）
