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An approach to the elastic field of a hybrid dislocation
Philosophical Magazine ( IF 1.5 ) Pub Date : 2020-05-26 , DOI: 10.1080/14786435.2020.1755736
Salem Neily 1 , Roland Bonnet 2
Affiliation  

ABSTRACT The transfer of plastic sliding through a crystalline interface involves at least a dislocation having a branch in each crystal. The elastic field associated with this elemental configuration has been processed in the past by Belov et al. (1983, 1992) but has never been verified or used, to the author’s knowledge. With typographical corrections and various verifications, the results obtained in this work confirm the validity of the theory for isotropic and/or anisotropic crystals. A general explicit solution to the elastic field is derived in the case of two different isotropic crystals. The theory fails when one branch is along the interface while the other lies in a crystal (hybrid dislocation). On the other hand, if a branch is very little inclined relative to the interface (quasi-hybrid dislocation), the theory applies fully. In this context, the combination of two quasi-hybrid dislocations solves in practice the problem of the triple node anchored to the interface.

中文翻译:

混合位错弹性场的一种方法

摘要 塑性滑动通过晶体界面的转移至少涉及在每个晶体中具有分支的位错。Belov 等人过去曾处理过与这种元素配置相关的弹性场。(1983, 1992) 但据作者所知从未得到验证或使用。通过排版更正和各种验证,这项工作中获得的结果证实了各向同性和/或各向异性晶体理论的有效性。在两种不同的各向同性晶体的情况下,推导出弹性场的一般显式解。当一个分支沿着界面而另一个位于晶体中(混合位错)时,该理论就失败了。另一方面,如果分支相对于界面几乎没有倾斜(准混合位错),则该理论完全适用。
更新日期:2020-05-26
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