The Aluminium Alloy (AA7050) hybrid composites (AAHC’s) reinforced with 2-10 wt.% Z_rB₂ ceramic particles, 1-5 wt.% Al₂O₃ particles and 0.5-2.5 wt.% MWCNT in novel Vibro-compo casting through liquid casting route. The Z_rB₂ and Al₂O₃ have been introduced in the conventional method, and MWCNT is injected by argon gas. Then, the stirring process was carried out in different temperatures to enhance wettability between reinforcements and matrix. The developed AAHC’s were characterised using a Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy analysis (EDS). The mechanical properties like hardness, tensile, impact and fatigue tests were performed on all the casted samples elaborately. The dispersion of Z_rB₂ ceramic particles and its implanting over the ductile Al7050 matrix was effectively obtained, which shown superior mechanical properties when compared to monolithic Al7050 alloy. The specimen contained 1.5%MWCNT + 6%Z_rB₂ + 3%Al₂O₃ reveals the greater tensile strength, which is 30.73% higher than the base material. Besides, the EDS results ensured the manufacturing of Al 7050/MWCNT + Z_rB₂ + Al₂O₃ metal matrix composites successfully, and no other intermetallic phases were identified.

Keywords: ceramics, composite materials, metal matrix composites, mechanical properties, metals