FRACTURE MECHANISMS OF FIBER-REINFORCED TITANIUM-ALLOY MATRIX COMPOSITES .3. TOUGHENING BEHAVIOR

被引：28

作者：

JENG, SM

YANG, JM

YANG, CJ

机构：

[1] Department of Materials Science and Engineering, University of California, Los Angeles

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 138卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0921-5093(91)90687-I

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The damage mechanisms of several notched unidirectional SCS-6 fiber-reinforced titanium alloy matrix composites tested under three-point bending are evaluated. The key microstructure parameters which dominate the load-deflection curve, crack tip initiation, crack tip damage growth and fracture behavior of these composites are discussed. The role of the fiber-matrix interface in crack initiation and propagation is also examined. Results indicate that the crack initiation energy is affected by the fiber strength, matrix yield strength or shear strength. The crack propogation energy is controlled by matrix phase deformation, multiple fiber fracture and fiber pull-out.

引用

页码：181 / 190

页数：10

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