Effect of Al2O3 on Mechanical Behaviour of the Stir-Cast Aluminium Alloy Metal Matrix Composites

ABSTRACT Aluminium and its alloy based cast metal matrix composites have gained lot of popularity in all the emerging fields of engineering and technology because of their superior mechanical properties compared to monolithic materials. The desired properties of the metal matrix composites have influenced by the weight percentage of reinforcements in the cast metal matrix composites, which imposed to study the mechanical behaviour of the cast metal matrix at different weight fraction of reinforcement particles. The present paper aims to investigate the mechanical behaviour of aluminium alloy (LM6)- Al2O3p composites at different weight fraction of reinforcement particles, which were produced by using stir cast technique. Experiments were carried out over range of particle weight percentage of 2.5 -7.5 wt% in steps of 2.5wt%. The experimental results show that the mechanical properties of cast MMCs are different at different weight percentage of Al2O3p. The morphology of cast MMCs indicates that the distribution of Al2O3p is not uniform throughout the casting.