Abstract
Abstract SiC particulate reinforced A356 alloy metal matrix composites (MMCs) are synthesized using intensive melt shearing. The effect of reinforcing particle distribution on the fluidity of cast A356/10 vol.% SiCp composites is studied. Spiral length representing the fluidity of the composite melt was measured and liquid flow and solidification behaviour were analysed. Improvement in the fluidity of composites is attributed to the uniform distribution of reinforcing particles by intensive melt shearing treatment. From the casting performance point of view, uniform dispersion of reinforcing particles achieved with the aid of intensive shearing improves the mechanical properties of A356/10 vol.% SiCp cast composites. Improved strength, rigidity and wear resistance of composites is attributed to the bulk homogeneity, significantly reducing casting defects.
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