CHARACTERIZATION AND ANALYSIS OF THERMOMECHANICAL AND THERMOELASTIC PROPERTIES FOR ALUMINIUM-SILICON CARBIDEGRAPHITE HYBRID METAL MATRIX COMPOSITES

Abstract

Metal matrix composites have been regarded as one of the most major classifications in composite materials. The thermal characterization of hybrid metal matrix composites has been increasingly important for a wide range of applications. In this research paper, the evaluation of thermophysical and thermoelastic properties have been accomplished for Al 6061, Silicon Carbide and Graphite hybrid metal matrix composites from room temperature to 300°C. Aluminium based composites reinforced with Silicon Carbide and Graphite particles have been prepared by stir casting technique. The thermophysical properties viz., thermal conductivity, thermal expansivity, latent heat of fusion, thermal resistivity and thermal shock resistance have been determined. Also, thermoelastic properties viz., modulus of elasticity and Poisson’s ratio have been evaluated. The results have indicated that, the thermal conductivity and thermal expansivity of the different compositions of hybrid MMCs decreases by the addition of Graphite with Silicon Carbide and Al 6061.