Abstract This research examines the mechanical and microstructural characteristics of Al7075 hybrid composites enhanced with Boron Carbide (B 4 C) and Silicon Nitride (Si 3 N 4 ), fabricated using stir casting. The goal was to make important mechanical properties better, such as hardness, tensile strength, fatigue strength, and wear resistance. Experimental results demonstrated that the composite containing 5 wt% B 4 C and 15 wt% Si 3 N 4 displayed enhanced performance, achieving a hardness of 204.8 VHN (about 8% improvement), an ultimate tensile strength of 550 MPa (about 3.8% improvement), and a fatigue strength of 270.2 MPa (about 8% improvement) compared to unreinforced Al7075. The wear loss went down to 3.20 mg, which is around a 9.6% improvement. Microstructural studies confirmed uniform reinforcement distribution and processed grains exhibiting minimal porosity. An AI-driven predictive model that used Artificial Neural Networks (ANN) was very good in predicting mechanical properties. The enhanced composite exhibits substantial potential for aerospace, automotive, and defense applications requiring high strength and superior wear resistance.
Deshwal et al. (Thu,) studied this question.