CHARACTERISTICS OF CREEP DEFORMATION IN CERAMICS

被引：0
|
作者：
CHOKSHI, AH [1 ]
LANGDON, TG [1 ]
机构：
[1] UNIV SO CALIF,DEPT MAT SCI & MECH ENGN,LOS ANGELES,CA 90089
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 1991年 / 7卷 / 07期
基金：
美国国家科学基金会;
关键词：
HIGH-TEMPERATURE CREEP; SOLID-SOLUTION ALLOYS; HARPER-DORN CREEP; DIFFUSIONAL CREEP; SILICON-CARBIDE; MAGNESIUM-OXIDE; URANIUM-DIOXIDE; VISCOUS GLIDE; LIQUID-PHASE; POLYCRYSTALLINE;
D O I：
10.1179/mst.1991.7.7.577
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The creep mechanisms in ceramics are reviewed briefly and then compared with experimental data. It is shown that there are three major types of creep behaviour: a stress exponent close to 5 due to control by dislocation climb and fully ductile behaviour; a stress exponent close to 3 due to control by climb from Bardeen-Herring sources and less than five interpenetrating independent slip systems; and a stress exponent close to 1 due to diffusion creep. The role of interface reaction control and the transitions from diffusion to power law creep are also examined.
引用
收藏
页码：577 / 584
页数：8
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