Mechanical and Tribological Behaviour of Al2O3&SiC Reinforced Aluminium Composites Fabricated via Powder Metallurgy

Abstract

Aluminium plays vital role in the fabrication of aerospace and defence structures due to its convincing properties like low density and chemical resistance through passivation phenomenon. Powder Metallurgy (PM) is acknowledged for its matrix structure control, proper reinforcement dispersion and matrix - particle bonding. The mechanical, tribological and metallurgical properties of aluminium mayremarkablyenhanced by the incorporation of ceramic materials. The intention of this study is to explore the influence of Sic and Al2O3 addition on the aluminium composites fabricated through PM technique. In this proposed work Al/Sic and Al/Al2O3metal matrix composites (MMC) were fabricated by PM with various weight percentages to compare its mechanical and tribological properties. The experimental results reveals that Al-Sic hybrid configuration shows better mechanical and tribological properties than Al-Al2O3 configuration. Similarly, both hybrid composites possess better performance than aluminium base Al 7075.