Influence of Various Parameters on The Properties of Aluminium Metal Matrix Composites (AMMC's): An Overview

Composites have gained wider acceptance attributed their superior mechanical properties such aslight weight, high strength, stiffness, fatigue behaviour, wear resistance, etc. at various service temperatures. This leads to the use of composite materials quite significantly in aerospace and automobile industries. This paper reviews in detail the outcome of various research work carried out earlier and current understanding in production of aluminium metal matrix composite (AMMC). It is observed that, stir casting is generally used as a method of producing MMC because of its simplicity, economical and yields fairly uniform properties compared to other methods. Parameters such as operating temperature, stirring time, and stirring speed are reviewed critically. Selection of reinforcementsand its effects, effect of distribution, and volume fraction are reviewed and discussed. The effect of preheating and coating of particles are discussed and finally concluded with the scope for future areas of work.