GRAIN-BOUNDARY STRENGTHENING ASSOCIATED WITH SIGMA=9 NEAR-COINCIDENCE BOUNDARY IN (1010) TWIST ZINC BICRYSTALS AT HIGH-TEMPERATURES

被引：17

作者：

WATANABE, T

YAMADA, M

KARASHIMA, S

机构：

[1] Department of Materials Science, Tohoku University, Sendai

[2] Heavy Apparatus Engineering Laboratory, Toshiba Corporation, Yokohama

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1991年 / 63卷 / 05期

关键词：

D O I：

10.1080/01418619108213933

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the presence of a grain boundary on creep deformation has been studied in zinc bicrystals containing <101BAR0> twist grain boundaries of different misorientations. It has been found that <101BAR0> twist boundaries hardly slide but readily migrate during creep deformation. The 51-degrees bicrystal whose boundary misorientation is close to SIGMA = 9 coincidence showed the greatest difficulty in creep deformation and exhibited the most significant grain boundary migration among the bicrystals studied. The presence of this low-SIGMA coincidence boundary was found to give rise to a more significant grain boundary strengthening in zinc at high temperatures. In comparison with the result of previous work on <101BAR0> tilt bicrystals, it has also been found that <101BAR0> twist boundaries are less effective than <101BAR0> tilt grain boundaries in grain boundary strengthening in zinc at high temperatures.

引用

页码：1013 / 1022

页数：10

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