Effect of Ti6al4v Reinforcement Particles on the Mechanical, Wear, and Corrosion Properties of Az91d Magnesium Matrix Composites

This study aims to synthesize composite materials using TC4 particles and AZ91D alloy through the utilization of semi-solid stirring and hot extrusion techniques. The main objective is to investigate the microstructure, mechanical properties, wear resistance, and corrosion behavior of these composites. The composites consist of a small volume fraction of spherical TC4 composites (0 vol.%,2 vol.%, and 5 vol.%). The findings indicate that the addition of TC4 particles has a notable impact on refining the grain size and effectively inhibiting the growth of the β-phase. Moreover, the incorporation of TC4 particles enhances the hardness, yield strength (YS), and ultimate tensile strength (UTS) of the magnesium matrix. Additionally, the TC4/AZ91D composite displays lower attrition rates and friction coefficients compared to the unreinforced magnesium matrix when subjected to forces of 150N and 300N. However, the inclusion of TC4 particles in the magnesium matrix results in an increased corrosion rate, as evidenced by the analysis of potentiodynamic polarization curves and EIS impedance spectra.