The effect of grain boundary sliding on curvature-driven boundary migration in Zn bicrystals

被引：12

作者：

Sheikh-Ali, A. D. ^{[1
]}

机构：

[1] Kazakh British Tech Univ, Dept Phys & Engn, Alma Ata 050000, Kazakhstan

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 12期

关键词：

grain boundary migration; creep test; grain boundary structure; high-temperature deformation; grain boundary sliding;

D O I：

10.1016/j.scriptamat.2007.02.031

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Zinc bicrystals with an originally flat 89 degrees symmetric tilt boundary tilted at 44 degrees to the tensile direction were strained at high-temperature. Crystallographic slip in grains was suppressed by the special geometry of the bicrystals. Grain boundary sliding significantly increases the amount of capillarity-driven boundary migration which tends to turn the boundary normal to the free surfaces. The results are interpreted in terms of the reduced boundary mobility, which is sensitive to grain boundary sliding. The sliding can increase the reduced mobility by an order of magnitude. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1043 / 1046

页数：4

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