EXPERIMENTAL INVESTIGATIONS ON MECHANICAL AND WEAR BEHAVIOR OF HYBRID ALUMINIUM ALLOY

Bharath. T, Rajesh. A. M, Mohammed Kaleemulla, K.Rangasravantha

Abstract: Automotive sector essentially needs aluminium because of its better mechanical properties, good corrosion resistance, wear resistance and having light weight compared to other metals. The present work is focussed to develop a hybrid metal matrix composite is to add the desired attributes, to study the change in behaviour of hybrid aluminium by varying percentage(10%) of Silicon carbide and Aluminium oxide composites and compare the test results with pure aluminium-7075. The Micro-Hardness test, wear test has performed on these samples by using pin on disc apparatus wear test will be carried on all the samples at various speeds of 200,400 & 600 rpm, varying load of 2kg, 4kg & 6kg. Which are produced by stir casting. The stir casting process has been used for the development of the composite system. The matrix material was melted in electric furnace and the pre-heat treated reinforcement at 810ºC in the desired volume fraction have been added followed by constant stirring the melt. The temperature of the melt held at 720ºC. The pouring temperature was recorded which has relation to quality of the casting. Therefore Reinforcement of aluminium oxide and silicon carbide to the hybrid aluminium increases its strength and properties compared to pure aluminium 7075 metal. The wear resistance increases with the increase in the reinforcement weight fraction. The addition of Silicon Carbide apart from improving the wear rate reduces the noise and vibration at higher speed and load condition. The overall tribological property improves due to addition of the two reinforcements.

Keywords: Composites, Sic, Alumina, Wear, Hardness

DOI: https://doi.org/10.15623/ijret.2016.0525024