Influence of Al2O3 Nanoparticles Addition to AA6082-T6 on Mechanical Properties by Stir Casting Technique

Abstract

The work aims at investigating the effects of the addition of Al2O3 nanoparticle as an enhancer on the mechanical characteristics of AA6082-T6 Metal Matrix Nano Composites (MMNCs) compounds. During the experiment, different weight fractions of Al2O3 nanoparticles (5, 10, 15, 20, 25, and 30 %) were added to molten AA6082-T6 using stir casting technique (SCT). Samples were formed at solidification and tested for mechanical properties, including the ultimate tensile strength (UTS), hardness (BHN), and density (ρ). Furthermore, the samples were evaluated for Yung’s coefficient (E) and yield strength (YS). From the results of the investigations, the developed method was found successful in ensuring the homogenous dispersion of the nanoparticles in the MMNCs. Increases in the proportion of the nanoparticles were found to increase the hardness (18.48%), density (15.89%), UTS (22.95%), Youngs modulus (27%), and YS (19.86%) while decreased were observed in the ductility (57.14%) as the proportion of the nanoparticles increases. Finally, Nano Al2O3 molecules were found to be a good material for the promotion of AA6082-T6 compounds.