A Review on Microstructural and Mechanical
Characteristics of Stir Cast Aluminium Hybrid Metal
Matrix Composites (AHMMCs)
GRENZE International Journal of Engineering and Technology
Vishnu Vardhana Naidu, K. C. Varaprasad, K. Prahalada Rao, Prakash
Aluminium Hybrid Metal Matrix Composites (AHMMCs)have evoked a keen
interest in recent times for potential applications in aerospace and automotive industries
owing to their superior strength to weight ratio and high temperature resistance. In the past
few years the global need for low cost, high performance and good quality materials has
caused a shift in research from monolithic to composite materials. Reinforcements like
particulate alumina, silicon carbide, graphite, fly ash, rice husk ash (RHA)etc can easily be
incorporated in the melt using cheap and widely available stir casting method. The present
review deals with the characterization of aluminium based hybrid composites developed by
stir casting for advanced applications. The potential of a wide range of secondary
reinforcements has been explored for the development of Aluminium Hybrid Metal Matrix
Composites (AHMMCs) and the application area of these composites has been proposed.
The focus is on the optimization of parameters for various properties of composites.
Further, the influence of reinforcement's type and contents on the material properties has
also been reviewed and discussed.