Volume 10 Issue 3 ( September 2023 )

Due to their low weight, high strength and enhanced tribological properties, aluminium alloy composite materials are recognized globally after for highly scientific applications. Al7075 hybrid composite was created by using the sand mould process in an electric resistance furnace to reinforce aluminium oxide (Al₂O₃ ) and boron carbide (B₄C) particles. In this study, the mechanical behaviour of hybrid composites made of Al7075, Al₂O₃ , and B4C with stable Al₂O₃ contents of 2% and variable B₄C weight percentages of 2% to 6% was examined. In both pure and cast specimens, the mechanical characteristics, such as tensile and compressive strength, hardness, and microstructure analysis, were assessed. In this study, the mechanical characteristics of the hybrid composites made from Al7075 alloy were experimentally studied and validated using the ASTM standard and FEA. The results showed that when hard ceramic particles (Al₂O₃ /B₄C) were added to a matrix alloy (Al7075), mechanical characteristics such as compressive strength and hardness improved while tensile strength was reduced. The static structural tensile test was successfully simulated in ANSYS. It was observed that both FEA results and analytical results were correlated.

Keywords: Al7075; Al₂O₃ / B₄C; Microstructure; Mechanical behaviour; FEA