ABSTRACT
Metal matrix composites (MMCs) are an important category of composite materials in the modern engineered materials which have clearly demonstrated their potential as promising candidates for various structural applications. The function of the matrix in MMCs is to hold the fibers and transfer the loads to the fibers. MMCs are high in dimensional stability with high strength and high elastic modulus. The ductility and toughness of MMCs are influenced by the amount and the way of distribution of the secondary phase present in the matrix which is relatively brittle and hard. Stir casting and squeeze casting are the most common examples for casting methods to fabricate MMCs. In spray deposition method, matrix metal is sprayed in molten condition through a nozzle, and the secondary phase particles are introduced into the molten metal during the spraying and MMCs are fabricated. In vapor deposition methods, fibers are coated with metallic vapor and then consolidated to develop MMCs.
