FORMATION MECHANISMS OF SISF-BOUNDING DISLOCATIONS IN COLD-ROLLED NI3AL

被引:20
作者
CHIBA, A [1 ]
HANADA, S [1 ]
机构
[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN
来源
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1994年 / 69卷 / 04期
关键词
D O I
10.1080/01418619408242516
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The dislocation structure in Ni3Al lightly deformed by cold-rolling consists of long straight dislocations parallel to the [101] direction; the dislocations are mostly dissociated into a/2[110] super partials bounding the antiphase boundary (APB) and partly dissociated into a/3[113] super Shockley partials bounding the superlattice intrinsic stacking fault (SISF). It is substantiated by the present study that in cold-rolled polycrystalline Ni3Al, SISF-bounding dislocations are produced as a result of the interaction between APB-bounding dislocations gliding on the different {111} slip planes, as originally proposed by Kear et al. The relation between ductilization and changes in dissociation schemes due to variation in ordering energy is discussed.
引用
收藏
页码:751 / 765
页数:15
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