FSP和TiB2对AA2024表面复合材料力学和摩擦学性能的协同效应

IF 2.2 3区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Tribology-transactions of The Asme Pub Date : 2023-05-15 DOI:10.1115/1.4062517

S. Rafi, T. Satish Kumar, T. Thankachan, C. Selvan

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引用次数: 2

摘要

本研究以非原位硼化钛颗粒(TiB2)为增强材料，采用搅拌摩擦加工技术制备了AA2024铝合金基表面复合材料。研究并评价了TiB2在AA2024表面的微观组织和力学变化。结果表明，与基体金属相比，TiB2的加入提高了合金的机械强度和硬度。采用针盘式装置分析了铝表面复合材料在不同滑动距离(500m、1000m、1500m和2000m)下的干滑动磨损特性。由于颗粒夹杂和搅拌摩擦处理的共同作用，所研制的表面复合材料的耐磨性相对于基体金属有了较大的提高。对磨损表面复合材料的表征表明，磨损机理是磨料磨损和黏着磨损共同作用的结果，而材料的主要去除是磨料磨损引起的。

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Synergistic Effect of FSP and TiB2 on Mechanical and Tribological Behavior of AA2024 Surface Composites

In this research, AA2024 aluminum alloy-based surface composites was fabricated using ex-situ titanium boride particles (TiB2) as reinforcement using friction stir processing technique. Microstructural and mechanical variation with respect to addition of TiB2 onto AA2024 surface was studied and evaluated. Results proposed an increase in mechanical strength and hardness with respect to TiB2 addition when compared with the substrate metal. Dry sliding wear characteristics of aluminum surface composites at varying sliding distances (500m, 1000m, 1500m and 2000m) was analyzed using pin-on-disc apparatus. Wear resistance of developed surface composites improved comparatively with respect to substrate metal due to the combined effect of particle inclusion and friction stir processing. Characterization of worn out surface composites proposed that wear mechanism happens due to combination of abrasive and adhesive wear, while the major material removal happens due to abrasive wear.

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来源期刊

Journal of Tribology-transactions of The Asme 工程技术-工程：机械

CiteScore

4.20

自引率

12.00%

发文量

117

审稿时长

4.1 months

期刊介绍： The Journal of Tribology publishes over 100 outstanding technical articles of permanent interest to the tribology community annually and attracts articles by tribologists from around the world. The journal features a mix of experimental, numerical, and theoretical articles dealing with all aspects of the field. In addition to being of interest to engineers and other scientists doing research in the field, the Journal is also of great importance to engineers who design or use mechanical components such as bearings, gears, seals, magnetic recording heads and disks, or prosthetic joints, or who are involved with manufacturing processes. Scope: Friction and wear; Fluid film lubrication; Elastohydrodynamic lubrication; Surface properties and characterization; Contact mechanics; Magnetic recordings; Tribological systems; Seals; Bearing design and technology; Gears; Metalworking; Lubricants; Artificial joints