Abstract
This study presents a systematic approach to screening, optimizing, and analyzing synergistic interactions among critical abrasive wear parameters in AA8011 aluminum alloy reinforced with boron carbide (B4C). Using a D-optimal design, the effects of load, sliding velocity, sliding distance, abrasive grit size, and B4C content (0–10 wt.%) were investigated to minimize wear rate and coefficient of friction (COF). The composites, fabricated via ultrasonic-assisted stir casting, exhibited a 38% hardness improvement with 6 wt.% B4C due to uniform dispersion and strong interfacial bonding. Statistical screening identified load, grit size, and B4C content as dominant factors, while optimization revealed that 6 wt.% B4C, 162 µm grit, and 10–15 N load reduced wear by 74% and COF by 50% compared to unreinforced AA8011. Synergistic analysis uncovered interactions where B4C reinforcement promoted protective tribolayer formation, mitigating microcutting wear mechanisms. Predictive models (R² > 0.96) were validated through ANOVA, offering a robust framework for designing wear-resistant composites. This study connects process parameters with performance, offering industries a data-driven approach to customize AA8011/B4C composites for automotive and aerospace uses. The results give engineers practical guidance to optimize material choices and operating conditions in demanding tribological applications, such as high-wear components, like brake systems in vehicles and actuators in aircraft.
Integrated Experimental Design and Optimization of Abrasive Wear Parameters of B4C-Reinforced AA8011 Matrix Composites Using D-Optimal DOE Approach.
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