论文标题
多晶的晶界脱位障碍
Dislocation impediment by the grain boundaries in polycrystals
论文作者
论文摘要
开发了晶界纳入障碍的热力学错位理论，以分析多晶的剪切测试。借助一组基于物理的材料参数，我们能够模拟负载及其反转的应力 - 应变曲线，这与Thuillier和Manach的实验曲线一致[2009]。提出了塑料滑移及其逆转下的代表性分布，它们的演变解释了载荷逆转过程中过渡阶段的延长长度。
Thermodynamic dislocation theory incorporating dislocation impediment by the grain boundaries is developed to analyze the shear test of polycrystals. With a small set of physics based material parameters, we are able to simulate the stress-strain curves for the load and its reversal, which are consistent with the experimental curves of Thuillier and Manach [2009]. Representative distributions of plastic slip under load and its reversal are presented, and their evolution explains the extended length of the transition stage during load reversal.
