STUDY OF WEAR BEHAVIOUR OF ALUMINIUM BASED MICRO AND NANO COMPOSITES FABRICATED BY STIR CASTING TECHNIQUE
In this present work, aluminum based metal matrix composites have been fabricated by using Silicon carbide (SiC) as reinforcement material by stir casting technique. Percentage of silicon carbide has been taken as 10% to the weight of matrix material aluminum. The commercial available micro size silicon carbide powder was converted to nano size using planetary ball milling machine. Characterization of the cast aluminums composite specimens was done by using Scanning Electron Microscopy (SEM) which showed uniform distribution of reinforcing particles in the aluminum matrix. Hardness and wear tests were also performed on the specimens to know the variations among pure Al, Al+SiC (micro), Al+SiC (nano). The fabricated Composites also showed improvement in hardness and wear resistance over the pure aluminum metal. Considering all the factors, it can be concluded that aluminum based composite with 10% by weight SiC (nano) reinforcement possess better wear resistance properties as compared to pure Al and Al+SiC (micro).
Aluminum matrix Composite, SiC particles, Stir casting, Wear, SEM.