Microstructural Evolution and Mechanical Properties of ZA27/Al2O3/MoS2 Metal Matrix Hybrid Nanocomposites

Metal matrix hybrid nanocomposites are widely used due to their good strength and wear resistance properties. Because of its light weight and excellent mechanical properties, the ZA-27 alloy is used in industrial and automobile applications. The research article is focused on manufacturing of ZA-27 matrix material reinforced by 1.5 wt. % of Aluminium Oxide (Al2O3) and 0.5 wt.% of Molybdenum Disulphide (MoS2) hybrid micro and nanocomposites by using stir casting followed by ultrasonic assisted technique. The hybrid micro and nanocomposite samples were studied for chemical composition by using EDS analysis. Microstructure investigation of ZA27/ Al2O3/MoS2 nanocomposites was carried out with help of SEM. The hardness, tensile strength and yield strength are mechanical properties of ZA27/Al2O3/MoS2 hybrid micro and nanocomposites samples were tested. The uniform dispersion of Al2O3 and MoS2 nanoparticles in matrix alloy were observed in the microstructural analysis of hybrid micro and nanocomposites. From results it is observed that hardness of hybrid nanocomposites was increased 20% and 8% equated to base alloy and hybrid composites. The tensile properties were increased 19.4% and 7.1% related to ZA-27 alloy and hybrid composites.