SiC Blending Behaviour of Hybrid AZ31 Alloy Nanocomposite: Metallographic and Mechanical Studies

Among the various alloys, magnesium alloy is 3rd most familiar non-ferrous metal, which is lower density and specific mechanical behaviour including yield, ultimate tensile, and impact strength. Due to economic and complex shape production, conventional stir casting mostly refers to fabricating magnesium alloy composites and roots for non-homogenous particle distribution and oxide crack propagation. The present investigation is an effort to enhance the particle distribution and prepare the AZ31 alloy hybrid nanocomposite with different blending ratios of silicon carbide (SiC)/boron nitride (BN) nanoparticle through squeeze cast stir cast operation with an applied stir speed of 500 rpm under Sulfur hexafluoride (SF6) nature. Influences of SiC and BN blending ratios and interfacial actions on microstructural and mechanical features of AZ31 alloy composite are studied, and homogenous particle distribution results in that the composite contains 5wt% BN/ 7.5wt% SiC offered maximum tensile strength (275 ± 5.5 MPa) with optimum strain (10.4%), better impact strength (15.7 ± 0.3 J/mm²), and higher hardness (71 ± 1HV).