Experimental investigation of mechanical and tribological properties of AA7065- B₄C nano-composite

Abstract

The present study used the stir casting technique to create hybrid composites employing aluminium AA 7065 alloy for the matrix and boron carbide reinforcements. In order to study the high-temperature tribological behaviour of aluminium boron carbide composites, the pin-on-disc method with pin heating setup was adopted. As a supplemental reinforcing material, fly ash particles were used due to their exceptional mechanical, metallurgical, and tribological properties. Microhardness testing, microstructure analysis, and tensile testing were all carried out. The wear rate of hybrid composites was studied on load, sliding velocity, and temperature. Mechanical properties and particle distribution were vastly improved during the testing phase. Although the ductility of hybrid composites was down, their tensile and compression strengths increased dramatically. The surface morphology of the pin was analyzed using a high-resolution scanning electron microscope. The impact of wear parameters on wear rate was analyzed using analysis of variance.