Abstract
Materials possessed with unexplored potential like, Graphene and other allotropes of Carbon has inexorably marched its way into the field of research. The distinct property of the Graphene includes elastic modulus (0.5 – 1 TPa), specific surface area (2630m2 g−1), tensile strength 130 GPa and these properties are supreme compared to allotropes of carbon material such as Carbon Nano Tube (CNT), graphite etc. In order to make complete utilization of this astounding property, it is currently being used in the form of reinforcement to enhance the mechanical properties of the composites. The current study focuses on the addition of various combinations of Graphene and MWCNT in enhancing the mechanical and tribological performance of AA 2024 composites. The composite is processed through the ultrasonic liquid processor, ball milling followed vacuum hot press and hot extrusion. Raman analysis, SEM morphology of the reinforcements, micro hardness, X-ray diffraction analysis are done on developed composites. Further, dry frictional wear test was carried out using pin-on-disc tribometer to evaluate the effect of Graphene/CNT in the composites under various normal load and disc speed conditions. Thus obtained hardness, mass loss and friction coefficient values are compared to various combinations of reinforcements and AA 2024 alloy. Surface roughness values (Ra), Max peak (Rp) and Max valley (Rv) are found to be comparatively lower than the monolithic AA 2024 alloy.
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