In modern day’s composite materials play a vital role in many industries and research fields. To accelerate the need of finding dynamic combinations to excel the most desirable commercial aspects like light weight, high strength, higher hardness, wear resistance, durability, graphene based materials offer betters platform to innovate more lighter and harder materials. Unlike other materials graphene weighs very lighter and stronger stimulate to use this as a major reinforcing material with most flexible matrix is aluminium. Significantly graphene is the only material available in two-dimensional structure which yields better mechanical properties like strength and hardness. To aid the easy preparation of metal matrix composites a well known technique called stir casting technique is normally employed. By keeping this in mind the present work involves the development of graphene reinforced aluminium based metal matrix composites with the help of stir casting process. The aluminium powder used here is 7075 grade which is meant for aerospace structure to retain as better matrix material. Graphene is added to alumiunm matrix with 0.5%, 1%, 1.5%, 2.0% by weight of the matrix considered. Hardness test has been done for all the prepared samples, it is found that maximum resistance to indentation was shown by the sample filled with 0.5% of graphene and least hardness number is noticed for the sample filled with 2% of graphene.
Keywords : Graphene Composites, Al-graphene, MMC’s, Nano Composites.