Investigation into tribological and Corrosion behavior of al7075 based Hybrid composites

Abstract

Research and usage on materials are generally employed to enhance their properties for the effective utilization in their applications. Aluminium alloys are widely employed for such kind of applications where reduction of weight is very important. Aluminium based alloys has limited applications in light weight, high strength and structural applications due to its poor wear and corrosion resistance. Increasing of competitiveness among industries need to develop composite materials. Hybrid Metal Matrix Composites are materials which are made up of one matrix material and two different reinforcement materials. Hybrid Metal Matrix Composites are developed due to lacking performance of Metal Matrix Composites in aerospace, marine, automotive and transport applications which require high strength, hardness, wear and corrosion resistance properties. Hybrid Metal Matrix Composites have superior mechanical and tribology properties than its monolithic alloys. Modern manufacturing engineers are focusing more on hybridizing the monolithic alloys to meet the global competitiveness. The Al7075/TiB2/MoS2 hybrid composites have unique properties than Al7075/TiB2. In this research, an attempt has been made to study the hardness, tensile strength, compressive strength, metallurgical properties, tribological beahvior, influence of wear test parameters and corrosion resistance of Al7075 hybrid composites which are reinforced with hard reinforcement TiB2 and soft reinforcement MoS2 to form the composites. The Al7075 hybrid composites are fabricated with the help of powder metallurgy technique. Al7075 acted as a matrix material which surrounds the Titanium Diboride and Molybdenum Disulfide after consolidation in powder metallurgy technique. Titanium Diboride acted as a hard reinforcement to enhance the mechanical properties, wear resistance and corrosion resistance of the composites newline newline newline