通过激光表面合金化铬镍铁合金 625 和碳化硅前驱体材料提高 Ti-6Al-4V 合金的机械和摩擦学性能

IF 6.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL Friction Pub Date : 2024-07-11 DOI:10.1007/s40544-024-0878-3
Hao-Ran Cheng, Ki-Hoon Shin, Hong Seok Kim
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引用次数: 0

摘要

本研究的重点是使用铬镍铁合金 625 和碳化硅前驱体材料的新型组合,通过激光表面合金化技术在 Ti-6Al-4V 合金上生产金属基复合材料(MMC)涂层。研究了不同比例的合金粉末,以评估涂层的显微硬度、耐磨性和摩擦系数等表面性能,并分析了涂层的相组成和显微结构。原位合成的 MMC 涂层显示存在 α-Ti、NiTi、NiTi2 和 TiC 相。此外,当 SiC 含量超过 20% 时,还观察到 Ti5Si3 和 α-Ti/Ti5Si3 共晶结构。与钛基材相比,MMC 涂层的显微硬度提高了三倍以上,磨损降低了 95%。然而,关键是要仔细选择合金粉末的适当组合,以避免摩擦性能大幅下降和裂纹的过度形成。通过对实验结果的对比分析,确定了最佳的前驱体材料成分为 85% 的铬镍铁合金 625 和 15% 的碳化硅。这项研究表明,可以有效利用铬镍铁合金 625 和碳化硅合金材料来提高钛合金的表面性能,从而扩大其在挑战性环境中的应用。
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Enhancement of mechanical and tribological performance of Ti–6Al–4V alloy by laser surface alloying with Inconel 625 and SiC precursor materials

This study focused on producing metal matrix composite (MMC) coatings on Ti–6Al–4V alloy through laser surface alloying using a novel combination of Inconel 625 and SiC precursor materials. Various ratios of alloying powders were examined to evaluate surface properties such as microhardness, wear resistance, and friction coefficient, along with analyzing the phase composition and microstructure of the coatings. The in situ synthesized MMC coatings exhibited the presence of α-Ti, NiTi, NiTi2, and TiC phases. Additionally, Ti5Si3 and α-Ti/Ti5Si3 eutectic structures were observed when the SiC content exceeded 20%. In comparison to the titanium substrate, the MMC coating significantly enhanced microhardness by over threefold and reduced wear by 95%. However, it was crucial to carefully select the appropriate combination of alloying powders to avoid a substantial decrease in friction performance and excessive formation of cracks. Through a comparative analysis of experimental results, the optimal precursor material composition was identified as 85% Inconel 625 and 15% SiC. This study demonstrated the effective utilization of Inconel 625 and SiC alloying materials to enhance the surface properties of titanium alloys, thereby expanding their application in challenging environments.

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来源期刊
Friction
Friction Engineering-Mechanical Engineering
CiteScore
12.90
自引率
13.20%
发文量
324
审稿时长
13 weeks
期刊介绍: Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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