摘要
使用位能图方法对金属Pd中晶界滑移的研究表明:有序晶界滑移易于开动,有序晶界的滑移可以引起晶界的迁移;与有序晶界相反,无序晶界的滑移很难开动.该结果可以解释形变过程中应力集中和位错发射通常均出现在无序界面处.
A method of potential energy map was used to investigate the behavior of the grain boundary （GB） sliding in palladium. It is found that the ordered GB is easily actuated to slide, and its sliding will result in a migration of GB along the direction perpendicular to the boundary plane. In contrast to the ordered GB, the disordered GB sliding is hardly activated. This gives a good explanation why the stress concentration and the dislocation emission usually appeared at the disordered boundarv during the deformation Drocess.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第3期257-262,共6页
Acta Metallurgica Sinica
基金
国家自然科学基金项目50471080
国家重点基础研究发展规划项目2006CB605103的资助~~
关键词
晶界滑移
分子静力学
位能图
PD
grain boundary sliding, molecular statics, potential energy map, palladium
