Solidification Processing of Aluminum Alloy Metal Matrix Composites for Use in Transportation Applications

This paper reviews the progress in solidification processing of metal matrix composites (MMCs) during the last 60 years. The need for a combination of lightweight, improved mechanical and physical properties has driven interest in these materials for use in transportation-related applications. These composites, incorporating various reinforcements, including oxides, carbides, graphite, graphene, and hybrid composites in the matrix of Aluminum alloy, are discussed along with various solidification processing methods. Limited discussion on issues specific to solidification in composites, including the effect of reinforcements on nucleation, growth, fluidity, microsegregation, and interactions between reinforcements and growing solid-liquid interfaces, have been included. The current and potential future uses of metal matrix composites in transportation applications, including electric vehicles, are presented. Challenges for future growth of the use of metal matrix composites in transportation are briefly discussed.