Why do grain boundaries exhibit finite facet lengths? -: art. no. 246102

被引：35

作者：

Hamilton, JC ^{[1
]}

Siegel, DJ ^{[1
]}

Daruka, I ^{[1
]}

Léonard, F ^{[1
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94551 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.90.246102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Uniform finite facets are frequently observed at grain boundaries (GBs) and are usually attributed to equilibrium stabilization by GB stress. We report calculations for an aluminum twin GB using density functional theory, the embedded-atom method, and continuum elasticity theory. These methods show that GB stress is much too small to stabilize finite facets, suggesting that the usual explanation is incorrect.

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页数：4

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