Study on tribological and mechanical behaviour of AA 7075 hybrid reinforced composite

Abstract

This paper deals with the influence of fly ash and aluminium oxide on the wear behaviour of Al 7075 alloy. The Al 7075 alloy reinforced with fly ash and Al2O3 were tested for wear resistance at three different compositions. The matrix is Al 7075 alloy and reinforcements are fly ash and Al2O3. The Al 7075 alloy, fly ash, and Al2O3 hybrid composite were prepared at 3 wt.% of Al2O3 for all three specimens, and 4 wt.%, 6 wt.%, 8 wt.% of fly ash. The wear test using pin on disc setup, brinell hardness test and microscopic structural analysis was conducted. From the result, the hybrid composite of sample containing 3 wt.% Al2O3 and 6 wt.% of fly ash is found to be the highest wear resistant material and highest mechanical resistance(tensile strength, yield stress, elongation and hardness) material among all the three samples.