Metal matrix composites (MMC) have been used in industrial forms for several decades; however, they continue improving. MMC usually consist of two different phases: one phase is a matrix (usually a metal) and the other is a reinforcement (usually a ceramic or a metal). These two phases are mixed by an appropriate technique in order to obtain a homogeneous material with specific properties that are different from the two monolithic materials.MMC are mainly used in the automotive, sporting, and spatial industries, although some are used in various high-temperature applications. MMC may be designed and produced to obtain certain mechanical, electrical, and thermal properties for specific applications. For example, high-temperature MMC can be used in automotive engine components, turbines, and spaceships, among others.Among ceramic, polymeric, and metallic matrices, the most widely used and studied has been MMC. Only a few years ago, MMC was studied by only a handful of researchers worldwide; now, MMC has become one of the most popular research subjects in materials science. Particular attention has been focused in Al and Mg alloys used as matrices, which are widely used in metallic matrix composites (MMC). The advantages of magnesium and its alloys used as a composite's matrix are their high specific strength and stiffness, good damping capacities, and dimensional stability.There are many books about composite materials, covering all aspects related to processing, characterization, and applications of MMC. However, this book, in addition to covering all these aspects, includes a wide review of experimental results in wetting, fabrication techniques, thermodynamics, kinetics, corrosion, wear, and welding in relation to MMC. All this research was conducted by our group of researchers over more than 30 years at
