Semnan University Press Mechanics of Advanced Composite Structures 2423-4826 13 1 2026 04 01 Microstructure Study and Optimization of Hardness and Tensile Strength of AW2024/B4Cp Reinforced Composites Through Linear Regression 83 96 9667 10.22075/macs.2025.36248.1781 EN Bharath Lakshminarayana Department of Mechanical Engineering, Cambridge Institute of Technology, K R Puram, Affiliated to Visvesvaraya Technological University (V.T.U), Belagavi, Karnataka, 590 018, India Jayappa Kumaraswamy Department of Electronics and Communication Engineering, R L Jalappa Institute of Technology, Affiliated to Visvesvaraya Technological University (V.T.U), Belagavi, Karnataka, 590 018, India Journal Article 2024 12 14 The current research is focused on the production of AW2024/B<sub>4</sub>C metal reinforced composite by using the liquid stir casting method. Ceramic particles armored composites are mainly used in engineering applications, which include aircraft, automotive, and marine fields. AW2024/B<sub>4</sub>C composites are produced by changing wt.% of B<sub>4</sub>C<sub>p</sub> as 1.00%, 3.00% and 5.00%. The produced AW2024/B<sub>4</sub>C composites are machined as per ASTM E8-16a, IS1500, and IS7739 standard test size and subjected to artificial ageing. The hardness and tensile strength of AW2024/B<sub>4</sub>C composites were measured through a Brinell hardness tester and a universal testing machine, respectively. The microstructure of the prepared composite material was examined to determine the uniform distribution of reinforcement material. The highest hardness and tensile strength of AW2024/B<sub>4</sub>C composites were measured and found to be 84.97 BHN and 273.82 N/mm<sup>2 </sup>for AW2024/5%B<sub>4</sub>C with 5 hrs. ageing duration. The results achieved reveal that both hardness as well as tensile strength increased by increasing the weight percentage of B<sub>4</sub>C content. L<sub>9</sub> standard orthogonal display was espoused to investigate the best parameter and also to authenticate the experimental test results. Further, a fracture study was done through SEM images to determine the mode of fracture. AW2024 Orthogonal Array B4C ANOVA Hardness https://macs.semnan.ac.ir/article_9667_12c6a6d59730a0ae4d04c211a7893716.pdf