Moustafa Essam B, Taha Mohammed A
Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah P.O. Box 80204, Saudi Arabia.
Solid State Physics Department, National Research Centre, El Buhouth St., Dokki 12622, Egypt.
Nanomaterials (Basel). 2023 Jul 24;13(14):2148. doi: 10.3390/nano13142148.
Friction stir processing (FSP) is an effective method for incorporating ceramic nanoparticles into metal matrix composites. This study investigated the effects of single and multiple additions of BN, VC, and SiC nanoparticles on the microstructure refinement and tribological behavior of an AA2024 alloy-based nanocomposite matrix fabricated by FSP. The results showed that adding ceramic nanoparticles, either singly or in combination, led to significant refinement of grain structure and improved wear resistance of the AA2024 alloy-based nanocomposite matrix. Additionally, the study found that combining BN, SiC, and VC nanoparticles produced the most effective effects on refining and reducing grain size. The microhardness behavior of the composite surface resulting from the hybrid particles showed a significant improvement, reaching 94% more than the base alloy. Overall, these results indicate that the multiple additions of ceramic nanoparticles by FSP are a promising approach to improve aluminum alloys' tribological behavior and mechanical properties.
搅拌摩擦加工（FSP）是一种将陶瓷纳米颗粒融入金属基复合材料的有效方法。本研究调查了单次和多次添加氮化硼（BN）、碳化钒（VC）和碳化硅（SiC）纳米颗粒对通过搅拌摩擦加工制备的基于AA2024合金的纳米复合基体的微观结构细化和摩擦学行为的影响。结果表明，单独或组合添加陶瓷纳米颗粒均导致基于AA2024合金的纳米复合基体的晶粒结构显著细化且耐磨性提高。此外，研究发现，将BN、SiC和VC纳米颗粒组合对细化和减小晶粒尺寸产生了最有效的影响。由混合颗粒导致的复合材料表面的显微硬度行为有显著改善，比基体合金高出94%。总体而言，这些结果表明，通过搅拌摩擦加工多次添加陶瓷纳米颗粒是改善铝合金摩擦学行为和力学性能的一种有前景的方法。
