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

CSME 2025/02
Volume 46 No.1 : 101-107

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

Shiva Kumar Nagavelly ^a, Vasu V ^b and Narasaiah N ^c
^aAssistant Professor, Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana, India.
^bProfessor, Department of Mechanical Engineering, National Institute of Technology Warangal, Warangal, Telangana 506004, India.
^cProfessor, Department of Metallurgical and Materials Engineering, National Institute of Technology Warangal, Warangal, Telangana 506004, India.

Abstract: 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.

Keywords: ZA27 alloy, Nano particles, Stir Casting, Hybrid Nanocomposites, Mechanical Properties

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