INVESTIGATION ON THE WEAR BEHAVIOUR AND PROPERTIES OF RHA REINFORCED 7075 ALUMINIUM T6 COMPOSITES PRODUCED BY VACUUM INFILTRATION

Naci Arda Tanış; Onur  Okur; Che Nor Aiza  Jafaar; Azmah Hanim  Mohamed Ariff; Recep  Çalin

Naci Arda Tanış -
Onur Okur
Che Nor Aiza Jafaar
Azmah Hanim Mohamed Ariff
Recep Çalin

Keywords: Aluminium metal matrix composite, rice husk ash (RHA), heat treatment

Abstract

In this study, 1, 2, and 4 vol.% rice husk ash (RHA) were added to AA7075 metal matrix. Samples were produced in a steel tube under 550 mmHg vacuum at 750 °C for 3 minutes. T6 heat treatment (aging) was applied to the samples. The density, porosity, and hardness of non-aged and aged samples were measured and compared. In addition, SEM and EDS analysis of aged samples were performed and wear behavior under 20N load was investigated. It was determined that hardness and porosity of non-aged composites increased with increasing reinforcement volume ratio. It was also observed that the increase in mass loss increased with increasing reinforcement-volume ratio.