Microstructures and Mechanical Properties of In Situ Al2O3/Al-Si Composites Fabricated by Reaction Hot Pressing

被引：0
|
作者：
El Oualid Mokhnache
G. S. Wang
L. Geng
L. J. Huang
机构：
[1] Harbin Institute of Technology,School of Materials Science and Engineering
来源：
Metallurgical and Materials Transactions B | 2014年 / 45卷
关键词：
Al2O3; Tensile Fracture; Al2O3 Particle; Primary Silicon; Brinell Hardness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Three in situ formed Al2O3/Al-Si composites with a different volume fraction of 10, 20, and 30 vol pct were fabricated using low energy ball milling and reaction hot pressing. The effect of reinforcement volume fraction on the microstructure and mechanical properties were studied. When the volume fraction was 30 vol pct, a massive primary Si (~130 µm) along with an increase of Al2O3 (~2 µm) was observed. The YS, UTS, and Brinell hardness of the composites were significantly higher than the aluminum matrix. Mechanisms governing the tensile fracture process are discussed.
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页码：1965 / 1969
页数：4
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