Abstract
AbstractAluminium metal matrix composites are being used worldwide in the fields of aeronautical and automotive industries. In this study, Aluminium 7075 metal matrix nano-composites are developed by low-cost stir casting method. Al 7075 alloy is reinforced with 1% nano-alumina and 1% nano-silicon carbide, 2% alumina, 2% silicon carbide nano-particles to fabricate metal matrix nano-composites. Wear tests were conducted on pin on disc apparatus by applying different loads 10, 15N at constant sliding velocity of 1.5 m/s with sliding distance 750 m. Wear rate increased significantly in addition of applied load. The coefficient of friction decreases with increase of applied load for the metal matrix and hybrid nano-composites. The results attributed that wear rate improved, uniform distribution of nano-particles obtained and lesser porosity for the metal matrix composite reinforced with 2% of Al2O3 nano-particles.KeywordsAl 7075Nano-aluminaNano-silicon carbideWear behaviour
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