ADVANCEMENT OF AL-SiC COMPOSITEMATERIAL BY POWDER METALLURGY METHOD AND SYNTHESIZE ON EDM

Abstract

In recent year, aluminum alloy based matrix composites (MMC) are gaining importance in several
aerospace and automobile applications. Aluminum has been used matrix material owing of its excellent mechanical
properties coupled with good formability. Addition of SiC as reinforcement in aluminum system improves mechanical
properties of composites. In the present investigation Al-SiC composite was prepared by powder metallurgy route.
Powder metallurgy homogeneously distributes the reinforcement in the matrix with no internal reaction and with less
porosity. SiC particles containing different weight fractions (10, 15 and 18 %) and mesh size (320) are used as
reinforcement. Though Al-SiC possess superior mechanical properties, the high abrasiveness of the SiC particles
obstacle the wide application. Al-SiC composite has the widest application in the aerospace industry due to high
hardness and light weight material. After the development of material that specimens were tested the under the micro
hardness, density and scanning electron microscopic (SEM).