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

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.