Spacing defects and disconnections in grain boundaries

被引：61
作者：
Hirth, J. P.
Pond, R. C.
Lothe, J.
机构：
[1] Univ Liverpool, Dept Mat Sci & Engn, Liverpool L69 3BX, Merseyside, England
[2] Univ Oslo, Inst Phys, N-0316 Oslo, Norway
来源：
ACTA MATERIALIA | 2007年 / 55卷 / 16期
关键词：
plastic deformation; grain boundary defects; dislocations; disclinations; line forces;
D O I：
10.1016/j.actamat.2007.06.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The process of cutting of a grain boundary by a gliding or climbing dislocation is considered. Some planar dislocation arrays with long-range stress fields are also treated. Defects formed on the grain boundaries by these mechanisms include edge and screw disconnections, grain boundary dislocations, spacing defects and line forces. The cutting defects can also acquire kinks and jogs. The results have implications for emission of lattice dislocations from grain boundaries, trapping of dislocations at grain boundaries and grain boundary topography. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5428 / 5437
页数：10
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