International Journal of Engineering and Technology

Rice Husk Ash (RHA) of three different particle size ranges (50 – 75 µm), (75 – 100µm) and (100 – 150µm) in 3, 6, 9 and 12 % by weight was reinforced with the aluminium alloy using stir cast route. The microstructure and mechanical properties of the fabricated composites were analyzed. The results reveal that the tensile strength, compressive strength and hardness of the aluminum alloy composites decrease with increase in particle size of RHA. But increase in the weight fractions of RHA particles decreases the ductility of the composite. Finally, the wear mechanism was investigated with the worn surface using a scanning electron microscope.