THERMAL-EXPANSION STRESS IN A METALLIC MATRIX COMPOSITE - INSITU TEM OBSERVATIONS

被引：6

作者：

COTTU, JP ^{[1
]}

COUDERC, JJ ^{[1
]}

机构：

[1] INST NATL SCI APPL,F-31077 TOULOUSE,FRANCE

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 11期

关键词：

D O I：

10.1007/BF01124832

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A metallic matrix composite material (2024-type aluminium alloy reinforced with 25 vol% SiC whiskers) was in situ thermally cycled in a transmission electron microscope. Dislocation movements were observed between 180 and 400-degrees-C. The local shear stress due to the difference between the thermal expansion coefficient of matrix and fibres is estimated from the radius of curvature of mobile dislocations. The experimental values of the internal stress are discussed.

引用

页码：2985 / 2990

页数：6