Abstract
Metal matrix composites (MMCs) are new-generation materials that are widely used for various advanced applications, namely, aerospace automotive thermal, structural, electronics, and owing to their superiority over the conventional materials. Their specific modulus, their specific strength, wear resistance, chemical inertness, high-temperature stability, regulated thermal expansion coefficient, etc. are much stronger. Among the several alternatives available, aluminum has to be the most widely used metal for matrix applications due to its lightweight and high strength. In this chapter, graphite and silicon carbide have been used as reinforcement in MMC aluminum. Graphite has a lubrication feature that reduces wear and friction when two surfaces slide over each other. It has a high resistance to corrosion, resulting in a long life of the components. Silicon carbide provides exceptional strength, hightemperature stability, oxidation resistance, and corrosion resistance. The effect of graphite and silicon carbide reinforcement on aluminum metal matrix composite has been analyzed. Aluminum hybrid composite with 5% Gr + 1% Sic and 5% Gr + 2% Sic has been manufactured using the stir casting method. A comparative investigation of the wear and mechanical properties of Aluminum 7075 alloys and hybrid composite alloys was conducted. Tensile strength in addition to hardness of the material has been acceded. The Taguchi orthogonal array was used for the experiment. The result of the wear test was then optimized using the utility additive method. The microstructure of the composite material SEM micrograph has been provided for analysis.
