Browse Publications Technical Papers 2019-28-0139
2019-10-11

A Comparative Study on Microstructures and Mechanical Properties of Al-Gnps Composites Fabricated By Casting Method 2019-28-0139

This paper describes an investigation on microstructures and mechanical properties of pure aluminium graphene nano platelets (GNPs) composites prepared by ultrasonic assisted stir casting technique. The proportion of GNPs varied from 0.5 to 2.0 wt. % in pure aluminium matrix with 99% purity. The investigations on composites revealed that Pure Al -1.0 % GNPs composite exhibited better mechanical properties with 48.49 % (~49%) increase in tensile strength and 34.53 % (~35%) increase in micro hardness compared to results of composites fabricated by stir casting technique. FESEM analysis was done to examine the surface morphology, whereas the Fractography of the tested composites and the XRD analysis was to inspect the phase analysis. The analysis revealed that there was uniform distribution of GNPs in the pure aluminium matrix due to cavitation effect with less porosity due to which there is significant enhancement in mechanical properties compare to composites by stir casting technique.

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