On the stress exponent of dislocation climb velocity

被引：20
|
作者：
Mompiou, F. [1 ]
Caillard, D. [1 ]
机构：
[1] CEMES, CNRS, F-31055 Toulouse, France
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 483-84卷
关键词：
dislocations; climb; quasicrystal; superalloy;
D O I：
10.1016/j.msea.2006.12.166
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The few available examples of pure climb plasticity indicate that the stress dependence of the corresponding dislocation velocity is larger than the simple proportionality predicted by classical models. A possible explanation is proposed on the basis of a comparison with dislocation glide in semiconductors. It is subsequently shown that high-temperature creep of several materials, in particular superalloys, may be controlled by the same process. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：143 / 147
页数：5
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