Study on the properties of composite materials produced by centrifugal casting

عبداللطيف, نوال غزت; فياض, سمير; طالب, محسن

doi:10.30684/etj.28.5.18

	Study on the properties of composite materials produced by centrifugal casting
Engineering and Technology Journal
Article 1, Volume 28, Issue 5, 2010, Pages 170-189 PDF (555.28 K)
DOI: 10.30684/etj.28.5.18
Authors
نوال غزت عبداللطيف; سمير فياض; محسن طالب
Abstract
The aim of this work is to use centrifugal casting process in production of composite materials reinforced in selected regions, and study the effect of process parameters on the microstructure and mechanical properties of composite materials. The composite material was fabricated by dispersing SiC with(53-75) μm particles in the Al-Mg melt alloy and stirred using vortex technique. Weight fraction of (5,10,15%) preheated sic particles were added to the melt alloy and manually stirred until the particles were completely wetted, . The composite slurry was then reheated to around 750 oC and agitated by means of electrical stirrer .After that the composite slurry was poured in centrifugal casting preheated die, rotate at different rotating speeds (900, 1400, 1800) r.p.m . Microstructure examination shows that the most of SiC particles settled in the outer region of produced composite cylinders, but the volume fractions for these particles are different depending on process parameters Also the thickness of reinforced region of produced composite cylinders increases with decreasing rotating speed and with increasing weight fraction of the added SiC% particles. Hardness test results show significant increase in composite hardness compares with matrix alloy .The Wear resistance of composite cylinders was higher than that of matrix

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