The A383 aluminum matrix composites (AMCs) are prominent automotive materials owing to their low-density yet high-strength nature. However, the conventional casting techniques, exorbitant price, and scarce supply of traditional ceramic reinforcements remain challenging. This research countermeasure the challenges by hybridizing the A383 with industrial marble dust (MD) and hexagonal boron nitride (hBN) through the stir-cum-squeeze casting technique. A constant proportion (4 wt%) of MD waste and varying proportions of hBN (1.5, 3, 4.5, and 6 wt%) were used to reinforce A383 alloy to improve its physio-mechanical characteristics. Stir-cum-squeeze casting enables homogenous dispersion of reinforcement particles within the matrix, resulting in improved interfacial bonding. Optimal results were achieved for A383 alloy reinforced with 4 wt% of MD and 6 wt% hBN, ensuring balanced tribo-mechanical characteristics against the as-casted A383. The hardness value increased by 40.8%, while the compression and tensile strength increased by 30.8% and 115.8%, respectively. Non-destructive testing confirms the effective reduction of porosity in the stir-cum-squeeze-cast composites. Moreover, the hybrid composites exhibit improved corrosion resistance by 32.18% after 72 h of testing. Additionally, the hybrid composites demonstrate a wear rate reduction of 54.35%.

中文翻译：

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通过大理石粉和六方氮化硼增强搅拌挤压铸造增强 A383 铝基复合材料的摩擦机械和腐蚀性能

A383 铝基复合材料 (AMC) 因其低密度但高强度的特性而成为著名的汽车材料。然而，传统陶瓷增强材料的传统铸造技术、高昂的价格和供应稀缺仍然面临挑战。这项研究通过搅拌挤压铸造技术将 A383 与工业大理石粉 (MD) 和六方氮化硼 (hBN) 混合来应对这一挑战。使用恒定比例（4 wt%）的 MD 废料和不同比例的六方氮化硼（1.5、3、4.5 和 6 wt%）来增强 A383 合金，以改善其物理机械特性。搅拌挤压铸造能够使增强颗粒均匀分散在基体中，从而改善界面结合。使用 4 wt% MD 和 6 wt% hBN 增强的 A383 合金取得了最佳结果，确保了与铸态 A383 相比平衡的摩擦机械特性。硬度值提高了40.8%，压缩强度和拉伸强度分别提高了30.8%和115.8%。无损检测证实了搅拌挤压铸造复合材料中孔隙率的有效降低。此外，经过 72 小时的测试后，混合复合材料的耐腐蚀性能提高了 32.18%。此外，混合复合材料的磨损率降低了 54.35%。