ROOM-TEMPERATURE DEFORMATION OF COSI2 SINGLE-CRYSTALS

被引：10

作者：

ITO, K ^{[1
]}

INUI, H ^{[1
]}

HIRANO, T ^{[1
]}

YAMAGUCHI, M ^{[1
]}

机构：

[1] NATL RES INST MET,TSUKUBA,IBARAKI 305,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 152卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(92)90061-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Room temperature deformation behavior of CoSi2 single crystals as well as polycrystals has been investigated in compression. The [001] oriented single crystals and polycrystals fractured before yielding without showing any evidence of plastic deformation, while [011], [111], [123BAR] and [135BAR] oriented single crystals exhibited appreciable fracture strains of about 2%-4% after a yield drop. Optical and transmission electron microscopy of the deformation structures revealed that the activated slip systems in the latter crystals are {001}[100]. Most dislocations were observed to be of edge orientation. The yield drop and the alignment of dislocations along the edge orientation strongly suggest that plastic deformation of CoSi2 by {001}[100] slip is controlled by the Peierls mechanism.

引用

页码：153 / 159

页数：7

共 16 条

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