Thermal mismatch stress in SiC whisker reinforced aluminium composite: new measurement method by X-ray diffraction

被引：6

作者：

Fei, WD ^{[1
]}

Liu, QY

Liang, NG

Yao, CK

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, State Key Lab Non Linear Mech, Inst Mech, Beijing 100080, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2001年 / 17卷 / 08期

关键词：

D O I：

10.1179/026708301101510924

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new X-ray diffraction method for characterising thermal mismatch stress (TMS) in SiCw - Al composite has been developed. The TMS and thermal mismatch strain (TMSN) in SiC whiskers are considered to be axis symmetrical, and can be calculated by measuring the lattice distortion of the whiskers. Not only the average TMS in whiskers and matrix can be obtained, but the TMS components along longitudinal and radial directions in the SiC whiskers can also be deduced. Experimental results indicate that the TMS in SiC whiskers is compressive, and tensile in the aluminium matrix. The TMS and TMSN components along the longitudinal direction in the SiC whiskers are greater than those along the radial direction for a SiCw - Al composite quenched at 500 degreesC. (C) 2001 IoM Communications Ltd.

引用

页码：912 / 916

页数：5

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