Development and Characterization of AA2024/SiC/Gr/Fly ash Hybrid Composite

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Abstract
The use of hybrid composites now a days has been very attractive due to their light weight, low cost along with high strength to weight ratio. Lot of research is going on to develop the newer composites with improved mechanical, tribological and thermal properties. From the last two decades, Aluminium alloys have gained lot of attention owing to their practical usage and the ease of processing. Aluminium matrix composites are most versatile materials which has applications in advanced structure, aviation, marine and defence application due to their excellent properties. It is a known fact that stir casting is one of the economical method of fabrication of the metal matrix composite, moreover it is also easy to fabricate the composites by stir casting rather than other processes of fabrication. But, the quality of metal matrix composites being cast through stir casting route are highly dependent on the process parameters and achieving the homogenous distribution of reinforcement is a big challenge. In the present investigation, AA2024/SiC/Gr/flyash hybrid composites were fabricated with the stir casting technique (having reinforcement weight composition of SiC 10%, Graphite 5%, and fly ash 5%). The morphological characteristics of the developed Metal matrix composite (MMC) have been investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM). The uniform distribution of the reinforcement particles clearly depicts the development of homogeneous composite.

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