Mechanical behaviour for aluminum matrix anocomposites reinforced with single and dual nanoparticles (TiO2 + SiO2)

This paper is devoted to studying the effect of adding different weight ratios of TiO2 and SiO2 nanoparticles powder on the mechanical properties of Al6061. Composite materials containing different proportions of TiO2:SiO2 (0.1, 0.3, 0.5)wt% were poured by the stirring method. The microstructure and phases are achieved through optical microscopy, SEM, and X-ray diffraction. The results showed that a large degree of homogeneity was obtained in the distribution of the addition of nanoparticles in the microstructure of the base alloys. The mechanical properties tests were carried out by tensile and hardness. The final tensile strength and yield strength were increased slightly until reached a maximum value of 151.12 Mpa and yield strength of 74.72 Mpa and show a decrease in elongation to 29.85. The hardness test results showed that the hybrid composite containing 0.5 wt% of TiO2 and SiO2 nanoparticles had a higher hardness of 87.08 compering with the single and dual reinforcement of other nanocomposites and base Al 6061 alloys.