Mechanical Properties of Al-Cu Alloy with Sic, Graphite and Fly Ash Composite Material

Abstract

Metal matrix composites (MMCs) are engineered materials, formed by the combination of two or more dissimilar materials (at least one of which is a metal) to obtain enhanced properties. In the present investigation, anAl-4.5% Cu alloy was used as the matrix and fly ash as the filler material, graphite is reinforcement. In the present, aerospace, automobile industries, replacing the existing metal matrix composites from Al 6061 to its high performance application. Aluminum copper alloy matrix composite attracts the much attention due to their lightness, high thermal conductivity, moderate casting temperature etc. fly ash and graphite powders are used because of its high strength, high hardness, less density.The composite was produced using stir casting method. The fly ash was added in 3%, 6%, and 9 wt. % and graphite was added in 3%, 6%, and 9 wt. % to the molten metal. The composite was tested for fluidity, hardness, density, mechanical properties, Microstructure examination was done using a scanning electron microscope to obtain the distribution of fly ash and graphite in the aluminium matrix. The results show an increase in hardness, tensile strength with increasing the fly ash and graphite content. The density decreases with increasing fly ash content. Corrosion increases with increasing fly ash content. Specimen is fabricated at different weight percentages and to be carried out for mechanical properties.