Mechanical Characterization and Machining of Squeeze Cast AZ91D/SiC Magnesium based Metal Matrix Composites

摘要

In the present work composite material is prepared by a combination of two or more constituent's materials using squeeze casting process. Magnesium based metal matrix composites are casted using magnesium alloy reinforced with various volume fractions of silicon carbide particulates. A squeeze casting process has been employed under an inert atmosphere to produce magnesium matrix composites and this process leads to a complete wetting of silicon carbide particulates in the molten magnesium. Further, the synthesized magnesium based metal matrix composites are machined by computer numerically controlled lathe. Surface roughness and Metal Removal Rate of the composites are measured and their variation in performances are studied using orthogonal array, Also the mechanical behavior of the composites are determined and also evaluated by comparing the results with the unreinforced magnesium alloy.