A generalized Peierls-Nabarro model for nonplanar screw dislocation cores

被引：59
|
作者：
Ngan, AHW
机构：
[1] Department of Mechanical Engineering, University of Hong Kong, Hong Kong, Pokfulam Road
来源：
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 1997年 / 45卷 / 06期
关键词：
dislocations; crystal plasticity; integral transforms;
D O I：
10.1016/S0022-5096(96)00125-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The original Peierls-Nabarro model considers planar dissociation only and is therefore not valid for screw dislocations which have more than one slip plane. In this work, a generalized Peierls-Nabarro model is developed to take into account the non-planar mode of dissociation for screw dislocations. Solution to the governing integral equation can be obtained by a self-consistent numerical scheme. The equilibrium configuration, strain and stress fields, and the energy of the dislocation core can be calculated from this model. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：903 / 921
页数：19
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