Metal Matrix Composites (MMCs) represent a class of advanced materials that have achieved considerable attention in several engineering applications due to their several unique properties. This chapter provides a comprehensive overview of MMCs, covering their composition, fabrication processing techniques, and diverse applications. Fundamental concepts of MMCs and key components involved in their composition are the reinforcement phase, often composed of ceramics, carbides, or fibers, imparts specific mechanical, thermal, and wear-resistant properties to the metal matrix. The interface between the matrix and reinforcement materials is explored to understand the resulting improvements in overall performance. Various processing methods are reviewed in the fabrication of MMCs, emphasizing techniques such as powder metallurgy, liquid phase infiltration, and stir casting. Each method is fully discussed and their advantages, disadvantages, and challenges on the final properties of the composite material are considered. Throughout this chapter, applications of MMCs across different industries are presented. Attention is given to aerospace, automotive, and structural applications, where MMCs have demonstrated enhanced strength, stiffness, and thermal stability compared to conventional parent materials (or the matrix metal). Furthermore, this chapter discusses the need to further in the field of MMCs for better manufacturing techniques that could provide lower fabrication time and cost of producing parts. Moreover, better mechanical properties require better reinforcement materials, and new processing methods needed for enhancing the properties and applicability of these composites.
