Affiliation:
1. Isfahan University of Technology
Abstract
In this work Al-7wt%Si-10wt%SiCp composites were produced by injection of the
reinforcement in the form of SiCp particles or a specially made particulate composite powder of
aluminum and SiCp into the melt of proper composition at a temperature corresponding to 10%
solid fraction. This paper presents the results of the investigation on the effects of reinforcement
addition form, reinforcement addition temperature, stirring speed and magnesium addition on the
incorporation and distribution of the reinforcement particles. The results showed that incorporation
of SiCp particles was considerably improved by their injection in the form of milled Al/SiCp
composite powder. Better particle wetting, improved particle dispersion and reduced particles size
were achieved by injection of milled Al/SiCp composite powder instead of SiCp powder.
Magnesium addition and high temperature injection were necessary for achieving good
incorporation. Reinforcement incorporation was improved by increasing the stirring speed up to 500
rpm, after which the incorporation decreased slowly.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Cited by
12 articles.
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