A MICROMECHANICAL MODEL FOR CRACK-GROWTH RESISTANCE OF PARTICULATE-REINFORCED METAL-MATRIX COMPOSITES

被引：8
|
作者：
MANOHARAN, M
KAMAT, SV
机构：
[1] Defence Metallurgical Research Laboratory, Hyderabad, 500 258, PO Kanchanbagh
来源：
JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 19期
关键词：
D O I：
10.1007/BF00570067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Particulate-reinforced metal-matrix composites are being developed to satisfy the need for high stiffness, high strength materials by combining the beneficial properties of both metals and ceramics. The use of such composites as structural members necessitates an understanding of their damage tolerance. A model relating the crack growth resistance to initiation toughness and tensile properties is developed in this paper. The crack growth toughness has also been related to fundamental microstructural properties of these composites. A critical ratio of Young's modulus to flow stress to enable stable crack growth has been established. Suitable suggestions for tailoring the microstructure to optimize crack growth toughness have been discussed.
引用
收藏
页码：5218 / 5222
页数：5
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