Fabrication, characterization and optimal selection of aluminium alloy 8011 composites reinforced with <i>B₄C</i>-aloe vera ash

Abstract This research focuses on the micro-structure and mechanical character- ization of aluminium alloy 8011 that contains aloe vera ash (AVA) boron car- bide particles (B4C). Reinforcement were varied ranged from 0 to 6% manufactured by stir casting technique. Scanning electron microscope imaging with energy-dispersive spectroscope was performed fabricated composites confirm presence reinforcements, images revealed a uniform distribution re- inforcements in matrix. Hardness, density, impact strength, tensile strength tests developed investigate be- haviour composites. According findings, increasing weight percentages reinforcement increased hardness while density decreases. The results show behaviour reinforced are significantly better than those unreinforced alloy. present paper also investigates application multiple criteria decision-making (MCDM) methodological approaches select best option. weighted product model (WPM), sum (WSM) &amp; Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE-II) methods provide ranking available alternatives; thereby, decision making critical thinking becomes easier. In addition, collected data is analysed Minitab using regression analysis statistical test.