Effect of inclination dependence of grain boundary energy on the mobility of tilt and non-tilt low-angle grain boundaries

被引：16

作者：

Brandenburg, J. -E. ^{[1
]}

Barrales-Mora, L. A. ^{[1
]}

Molodov, D. A. ^{[1
]}

Gottstein, G. ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Phys Met & Met Phys, D-52056 Aachen, Germany

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 12期

关键词：

Grain boundary energy; Grain boundary migration; Inclination; Faceting; AL-BICRYSTALS; ALUMINUM BICRYSTALS; MIGRATION; GROWTH; ANISOTROPY; EVOLUTION; KINETICS; SIGMA-3; MOTION; IMPACT;

D O I：

10.1016/j.scriptamat.2013.02.054

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In contrast to a 9.1 degrees <1 0 0> tilt grain boundary, which remains straight and immobile at elevated temperatures, a 9.1 degrees <1 0 0> mixed boundary easily assumes a curved shape and steadily moves under a capillary force. Molecular statics simulations suggest that this is due to the inclination dependence of grain boundary energy, which in turn depends on boundary geometry. The energy of a tilt boundary was found to change, whereas that of a mixed boundary was found not to change with boundary inclination. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：980 / 983

页数：4

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