The current study reveals the dry sliding wear behaviour of novel groundnut shell ash and boron carbide (B4C) reinforced hybrid aluminium matrix composite fabricated through the squeeze casting process. The experiments were carried out on the basis of Taguchi's L27 (3)13 orthogonal array and optimization by genetic algorithm. The input parameters namely reinforcement percentage (wt.%), applied load (20, 30, 40 N), sliding speed (1, 2, 3 m/s) and wear rate, coefficient of friction as a measurable response. The findings of the analysis of variance revealed that the reinforcing percentage was the most important parameter in evaluating hybrid composite wear behaviour. The wear rate and coefficient of friction decrease while increasing the weight percentage of B4C but increase with the addition of groundnut shell ash. The wear resistance of (Al/2.5GSA/7.5B4C) hybrid composite showed more than 50% improvement compared to the base alloy. Worn-out surface morphology was reported with the occurrence of fine groove, delamination and cracks. The prepared hybrid composites show enhanced mechanical and wear resistance suitable for automobile engine brackets, cylinders, pistons etc. The environmentally friendly groundnut shell ash has the ability to function as reinforcement for the growth of composites.
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