A STUDY ON HARDNESS AND TRIBOLOGICAL PROPERTIES OF ALUMINUM-7068 ALLOY BASED METAL MATRIX COMPOSITE REINFORCED WITH TITANIUM CARBIDE (TIC) PARTICLES
Keywords:
Aluminium composite, Al-7068, Tribological properties, Dry sliding Wear, Titanium Carbide, Stir casting, Hardness.Abstract
In this attempt of research work synthesis, hardness and tribological properties of aluminium metal matrix composites (AMMCs) are produced as Al-7068 matrix metal and reinforcements as TiC particulates through stir casting. Experiments were conducted by varying weight fraction of TiC (0%, 3%, 6%, 9% and 12%). Wear characteristics of Al-TiC composites have been investigated under dry sliding. Dry siding wear tests have been carried out using pin-on-disk wear tester at different loads (2 Kg & 3 Kg) and different speeds (200RPM, 400RPM, 600RPM). The tests were carried out making possible combination of load and speed with each weight fraction of TiC. The results indicate that on addition of TiC reinforcement in Al-7068 Alloy has improved the wear performance. The effect of load indicates that as load increases the wear increases and while speed increases the wear performances decreases. The hardness of the composite materials was measured using Brinell hardness tester and found that as weight fraction increases the hardness of the composite increases.
