ON THE ASYMMETRICAL DISSOCIATION OF LOMER DISLOCATIONS

被引:12
作者
BONNEVILLE, J
DOUIN, J
机构
[1] École Polytechnique Fédérale de Lausanne, Institut de Génie Atomique, Lausanne
关键词
D O I
10.1080/09500839008215130
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Using anisotropic elasticity theory, Komer, Schmid and Prinz have shown that Lomer-Cottrell dislocations in the f.c.c. structure have asymmetrical equilibrium positions. This is also true for the isotropic theory, but in addition it can also be demonstrated in a very simple way that the ratio of the dissociation widths on the two (111) planes is material independent. This result seems to be general even for the anisotropic case. However, careful observations of Lomer dislocations in copper by weak-beam transmission electron microscopy indicate clearly that they are not dissociated. © 1991 Taylor & Francis Group, LLC.
引用
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页码:247 / 251
页数:5
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