Investigation on Wear Behaviour and Microstructure Analysis of Al-7075 Alloy Reinforced with Mica and Kaolinite

Abstract

In the present work, an attempt is made to investigate wear behaviour of Al-7075 alloys made of Mica and Kaolinite. Specimens are prepared using stir casting technique in a temperature range of 800 to 850°C. Influence of Mica and Kaolinite reinforcements on the wear characteristic of the composite is analysed using experiments. Wear behaviour under constant load of 40 N is investigated using pin-on-disc test at room temperature, under dry condition. Experiments are conducted for different proportions of reinforcements used (2%, 4%, 6% and 8%). Results were found to predict an increase in wear behaviour with increase in weight percentage of reinforcements. The presence of mica and kaolinite in the matrix decreased wear loss by increasing wear resistance.