MICROSTRUCTURAL AND MECHANICAL PROPERTIES OF AL6061/GR COMPOSITES PROCESSED THOUGH STIR CASTING

This investigation scrutinizes the micro structural and mechanical properties graphite particles reinforced Al6061 aluminum based composites fabricated through stir casting technique. The composites were fabricated by reinforcing 4, 8 and 12% of graphite particles into molten aluminium by stirring at 300rpm. The microstructural properties were evaluated for the uniform dispersion of the reinforcement and the mechanical properties such as yield strength, hardness and impact strength of the composites were evaluated and analysed for varying graphite reinforcement percentage. The results this investigation revealed that the uniformity of reinforced graphite particles dispersion were reasonable while the yield strength, hardness and impact strength of the composites were reduced for the increased graphite particulate percentage in comparison with the matrix alloy.