CRACK-PROPAGATION BEHAVIOR OF POLYCRYSTALLINE ALUMINA UNDER STATIC AND CYCLIC LOAD

被引：24

作者：

KISHIMOTO, H ^{[1
]}

UENO, A ^{[1
]}

OKAWARA, S ^{[1
]}

KAWAMOTO, H ^{[1
]}

机构：

[1] JAPAN FINE CERAM CTR,NAGOYA 456,JAPAN

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 05期

关键词：

D O I：

10.1111/j.1151-2916.1994.tb05410.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Various causes for cyclic-loading fatigue in ceramics have been proposed. Degradation in the grain-bridging effect is the most important cause for cyclic-loading fatigue in non-transforming ceramics. Cyclic- and static-loading crack propagation behavior in terms of crack propagation rate, load-strain curve, and R-curve in compact tension specimens of polycrysalline aluminas with two types of average grain size is reported. Significant bridging is observed in coarse-grained alumina. The results are consistent with the proposal that grain bridging increases with grain size and that degradation in grain bridging is the most important cause for cyclic-loading fatigue in alumina ceramics.

引用

页码：1324 / 1328

页数：5

共 25 条

[1] ROLE OF INTERFACIAL GRAIN-BRIDGING SLIDING FRICTION IN THE CRACK-RESISTANCE AND STRENGTH PROPERTIES OF NONTRANSFORMING CERAMICS [J].