Magnesium Metal Matrix Composites - a Review

摘要

Magnesium matrix composites are potential materials for various application of aerospace and defence organisations due to their low density, good mechanical and physical properties. The improvement of specific strength, stiffness, damping behaviour, wear behaviour, creep and fatigue properties are significantly influenced by the addition of reinforcing elements into the metallic matrix compared with the conventional engineering materials. This paper presents the overview on the effects of different reinforcements in magnesium and its alloy, highlighting their merits and demerits. The major phenomenon like interfacial transition, agglomerating effect, fibber-matrix bonding and the problems associated with the particle distribution are discussed in this paper. Effect of reinforcement on the microstructure and mechanical properties like tensile strength, yield strength, ductility, strain, hardness, wear and fatigue are also discussed in detail. Major applications of different magnesium MMCs are also analysed critically in this work.