Hybridization of aluminum–silicon alloy with boron carbide and ferrotitanium: impact on mechanical properties for automotive applications

The present study investigated the influence of adding FeTi as supplementary reinforcement to B₄C in an aluminum–silicon (Al-12Si) matrix for automobile applications. The FeTi alloy was introduced at 3, 6, and 9 wt.% alongside 5 wt.% B₄C particles. The effects of such addition on the morphology, physical, and mechanical properties were examined. The X-ray diffraction pattern identified the presence of B₄C and FeTi reinforcing phases alongside Al₃Fe and Ti₅Si₃ phases. The examined morphology revealed that the particles were well dispersed in the matrix, with consequent effects on their properties. Porosity was reported to reduce linearly with rise in FeTi dosage, consequently resulting in a linear increase in density and relatively high overall density. Inclusive of the hardness, the yield and ultimate strength were enhanced progressively upon a progressive rise in FeTi dosage, with a contrary reduction in ductility. The result revealed that the inclusion of FeTi reinforcing fillers in the matrix is capable of ensuing appreciable improvement in the mechanical properties of the composite.