Influence of aluminium oxide and graphene on the mechanical properties of Cu-Sn alloy composites

Abstract

This study's primary goal was to examine how Copper and Tin additions affected the composition, structure, and mechanical characteristics of tin bronze (Cu-10%wt.Sn). Gr content and Al2O3 were both added at concentrations of 4 wt% each. For the mechanical testing and structural analyses, the alloy samples were manufactured using the permanent die casting process and then machined to the desired dimension. The study of mechanical properties included measuring impact strength, Brinell hardness, ultimate tensile strength, and % elongation. Intermetallic phases with fine and uniform distribution were found in the Al2O3 and Gr reinforced alloys, respectively. The percentage elongation, ultimate tensile strength, hardness, and impact strength of tin bronze were all found to be greatly increased by the addition of Al2O3 and Gr, according to the mechanical properties results. The sample having 4 wt% Gr content achieved the highest percentage elongation. Impact strength of 17% and 14 J was found highest in 4 wt% Al2O3, respectively, whereas the sample containing 4 wt% Al2O3 content achieved the best tensile strength and hardness values of 383.1 MPa, 296.2 MPa and 71 MPa respectively.