物理学报2012，Vol.61Issue(15)：407-413,7.
一个单滑移取向铜单晶体疲劳位错结构的热稳定性研究
Investigations on the thermal stability of fatigue dislocation structures in a single-slip-oriented copper single crystal
摘要
Abstract
The fatigue dislocation structures in cyclically saturated[4 18 41]single-slip-oriented Cu single crystal at different values of plastic strain amplitudeγpl,as well as their thermal stabilities under annealing at different temperatures for 30 min are studied using the electron channeling contrast（ECC） technique in scanning electron microscopy（SEM）.It is found that the dislocation structures, such as veins,PSB ladders,PSB cells,Labyrinths,etc.undergo an obvious process of recovery after annealing at 300℃.However, when the annealing temperature is higher than 500℃,those dislocation structures basically disappear,and the recrystalhzation takes place in all specimens,meanwhile,annealing twins form in most cases.The occurrence of the recrystallization and the formation of annealing twins are related not only to the annealing temperature and appliedγpl,but also closely to the accumulated cyclic plastic strain.关键词
铜单晶体/疲劳位错结构/再结晶/退火孪晶Key words
copper single crystal/fatigue dislocation structure/recrystallization/annealing twin分类
矿业与冶金引用本文复制引用
郭巍巍,任焕,齐成军,王小蒙,李小武..一个单滑移取向铜单晶体疲劳位错结构的热稳定性研究[J].物理学报,2012,61(15):407-413,7.基金项目
国家自然科学基金 （）
中央高校基本科研业务费（批准号：N110105001）资助的课题 （）
