THE MECHANICAL-PROPERTIES OF AN AL2O3/NI3AL PARTICULATE-REINFORCED COMPOSITE

被引：18

作者：

BRENNAN, PC ^{[1
]}

KAO, WH ^{[1
]}

YANG, JM ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,DEPT MAT SCI & ENGN,LOS ANGELES,CA 90024

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 153卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(92)90263-Z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of temperature and thermal exposure on the mechanical properties and failure behavior of a nickel aluminide (Ni3Al) (IC-221) reinforced with Al2O3 particulates were investigated. The high temperature specific yield strength of the composite was higher than the unreinforced matrix at all the temperatures tested. An increase as high as 40% was exhibited. However, only a slight improvement in specific modulus was observed at room temperature. The composite demonstrated near 100% strength retention after thermal exposures at 1000-degrees-C. Specimens with diffusion-bonded surface foils indicated that surface flaws typically account for a 20% decrease in failure strength. Compression creep tests at 650 and 700-degrees-C indicated an improvement in creep strength over unreinforced IC-221.

引用

页码：635 / 640

页数：6

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