DYNAMIC-MECHANICAL ANALYSIS OF PRESTRAINED AL2O3/AL METAL-MATRIX COMPOSITE

被引：50
|
作者：
ELOMARI, S
BOUKHILI, R
SKIBO, MD
MASOUNAVE, J
机构：
[1] MC21 INC,SAN DIEGO,CA 92121
[2] ECOLE TECHNOL SUPER,MONTREAL,PQ,CANADA
来源：
JOURNAL OF MATERIALS SCIENCE | 1995年 / 30卷 / 12期
关键词：
Alumina - Aluminum alloys - Damping - Elastic moduli - Materials testing - Scanning electron microscopy - Thermal effects - Thermal expansion - Volume fraction;
D O I：
10.1007/BF01209214
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of prestraining on the elastic modulus, E, and damping capacity, tan phi, of in and 20 vol% Al2O3 particle-reinforced composites has been investigated as function of temperature using dynamic mechanical analysis. Both elastic modulus and damping capacity were found to increase with volume fraction. At 10 vol% the modulus and damping were relatively insensitive to prestrain. However, at 20 vol% it was observed that the modulus decreased with increasing prestrain while damping increased significantly. These results are discussed in terms of fraction of broken particles, particle size, and differential in thermal expansion between the matrix and Al2O3 particulate.
引用
收藏
页码：3037 / 3044
页数：8
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