Role B4C Addition on Microstructure, Mechanical, and Wear Characteristics of Al-20%Mg2Si Hybrid Metal Matrix Composite

In the current study, effect of different B4C additions (0, 2.5, 5, and 10 wt%) on microstructural, solidification behavior, mechanical, tribological properties Al-20%Mg2Si composite were studied by means scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Vickers hardness, tensile, dry sliding wear tests. The cooling curve thermal analysis (CCTA) approach was utilized to monitor influence particles behavior composite. results revealed that addition up wt% reduced nucleation temperature (TN) growth (TG) primary Mg2Si phase. Moreover, proper amount added has a significant microstructural alteration, mean size in Al-Mg2Si 47 μm, which 5 B4C, particle decreased 33 μm. highest UTS (217 MPa) El% (7%) achieved Al-20%Mg2Si-5%B4C hybrid cast brittle mode fracture some cleavage characterization, 5%B4C, altered more ductile fracture. resistance lowest rate (0.46 mm3/Km) friction coefficient (µ = 0.52) under 20 N applied load compared other fabricated composites mild abrasion as governed mechanism.