计算机模拟循环形变铜单晶体的自组织位错结构  

Computer Simulation of Self-Organised Dislocation Structures During the Cyclic Deformation in a Copper Single Crystal

作　　者：杨继红 马常祥[1] 李兰杰[1] 李守新[2] 

机构地区：[1]东北大学理学院,辽宁沈阳110004 [2]中国科学院沈阳金属研究所,辽宁沈阳110015

出　　处：《东北大学学报（自然科学版）》2001年第2期229-231,共3页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目! (5 99710 5 8;国家攀登项目基金资助项目! (95 Yu 41)

摘　　要：以随机分布在主滑移面上的 30 0 0个平行正负直刃型位错作为初始组态 ,采用离散位错动力学方法 ,模拟循环形变铜单晶体的自组织位错结构 ,得到动态平衡分布的脉络和位错墙结构 。The self organised dislocation structures during the cyclic deformation of a copper single crystal were simulated by using three thousands positive negative parallel straight edge dislocations randomly distributing on the primary slip planes as the initial conditions and by using the method of discrete dislocation dynamics. A big dipole dislocation structure was found. The vein and wall structures of dynamic equilibrium were obtained. Computer simulation results agree with the experimental results.

关 键 词：铜单晶体 自组织位错结构 计算机模拟 循环形变 脉络 位错墙 偶极子 

分 类 号：TG146.11[一般工业技术—材料科学与工程] O772[金属学及工艺—金属材料]