搅拌摩擦加工制备MWCNTs/1060铝基复合材料的力学性能

The Mechanical Property of Multi- walled Carbon Nanotube reinforced 1060 Aluminum Composites by Friction Stir Processing

采用搅拌摩擦加工技术(FSP)制备多壁碳纳米管(MWCNTs)增强1060铝复合材料,对复合材料的断口形貌、抗拉强度、延伸率及磨损性能进行了分析。结果表明:宏观断口分布为大范围纤维形貌,呈微孔聚集性断裂。复合材料的抗拉强度和耐磨性随着MWCNTs体积分数的增加而升高,延伸率随着MWCNTs体积分数的增加而降低。复合材料的磨损过程为磨粒磨损和固体润滑膜的脱落。

Multi -walled carbon nanotubes（MWCNTs） reinforced 1060 aluminum matrix composites were prepared by friction stir pro- cessing （FSP）. Morphologies of fracture, tensile strength, elongation and wear property were analyzed respectively. The results show that the distribution of macroscopic fracture appears a wide range of fiber morphology which presents microporous aggregation fracture. With increasing of the volume fraction of MWCNTs, the tensile strength and wear property of the composites increased while the elon- gation of composites decreased. Wear process of composites belongs to abrasive wear and shedding of solid lubricant film.