Optimization of Machining and Wear Behavior of Al6061 Composites Reinforced with SiC Particles

Abstract

Metal Matrix Composites (MMCs) reinforced with SiCp having average particle size of 25μ and Graphite exhibits good wear resistance and machinability property. The present study attempts to investigate machining and wear properties of Al-SiC with the addition of 1% of graphite powder. These composites are fabricated through stir casting route with the addition of SiC particles from 3 to 9% in steps of 3% along with 1% of graphite powder by weight. Experiments were conducted by varying the cutting speeds and cutting parameters in turning, measuring the surface roughness, cutting force. The results confirms that machinability enhances with increased addition of reinforcement. The density and hardness tests are conducted and analysed for each composition. The worn surface examined through optical microscope and XRD analysis. X-ray diffraction (XRD) analysis confirms the presence SiC and Gr. It was also found that there exists good bonding between matrix and ceramic particles. The mechanical properties are evaluated through tensile test and compression test for prepared composites