V含量对激光熔覆FeCoCrNiTi基合金涂层组织与耐磨性的影响

doi:10.13251/j.issn.0254-6051.2025.12.044

金属热处理 ›› 2025, Vol. 50 ›› Issue (12): 290-296.DOI: 10.13251/j.issn.0254-6051.2025.12.044

V含量对激光熔覆FeCoCrNiTi基合金涂层组织与耐磨性的影响

刘冉¹, 陈楚琦¹, 吴韬²

1.北方工业大学机械与材料工程学院, 北京 100144;
2.浙江机电职业技术大学, 浙江杭州 310053

收稿日期:2025-08-10 修回日期:2025-10-02 发布日期:2026-01-06
作者简介:刘冉(1984—),女,副教授,博士,主要从事激光加工等工作,E-mail:liuran@ncut.edu.cn
基金资助:
浙江省“尖兵领雁+X”研发攻关计划(2024C01196)

Effect of V content on microstructure and wear resistance of laser clad FeCoCrNiTi alloy coating

Liu Ran¹, Chen Chuqi¹, Wu Tao²

1. College of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China;
2. Zhejiang Polytechnic University of Mechanical and Electrical Engineering, Hangzhou Zhejiang 310053, China

Received:2025-08-10 Revised:2025-10-02 Published:2026-01-06

摘要/Abstract

摘要： 采用激光熔覆技术在TC4钛合金表面成功制备了FeCoCrNiTiV_x (x=0, 0.5, 1.0, 1.5, 2.0,摩尔比)系列高熵合金涂层,系统研究了V元素含量对涂层微观结构、力学性能及耐磨性的影响。结果表明,所有涂层均与基体结合良好,无明显缺陷。随着V含量增加,涂层组织由不规则形态逐渐转变为规则树枝晶,且晶粒显著细化,一次枝晶臂间距明显减小。XRD和EDS分析表明,当x≥1.5时,涂层中形成以β-Ti和Ti_0.84V_0.16为主的体心立方结构(BCC)相,而面心立方结构(FCC)的TiN及TiNi相含量相应减少。当x=1.5时,涂层表现出最优的综合性能:平均显微硬度达703 HV10,稳定阶段平均摩擦因数为0.36,磨损率为2.2×10^-7 g/(cm·r)。其性能提升主要归因于枝晶细化效应、BCC相的形成及其所带来的弥散强化作用。

关键词: 激光熔覆, 高熵合金, 钒, 微观组织, 耐磨性能

Abstract: A series of FeCoCrNiTiV_x(x=0, 0.5, 1.0, 1.5, 2.0, molar ratio) high-entropy alloy coatings were successfully prepared on the TC4 titanium alloy by using laser cladding technology. The effect of vanadium content on the microstructure, mechanical properties, and wear resistance of the coatings was systematically investigated. The results indicate that all coatings exhibit good bonding with the substrate without obvious defects. As the V content increases, the coating microstructure transforms from an irregular morphology to regular dendrites, with a significant refinement in grain size and a noticeable reduction in primary dendrite arm spacing. XRD and EDS analysis reveal that when x≥1.5, body-centered cubic (BCC) phases, primarily composed of β-Ti and Ti_0.84V_0.16, form in the coatings, while the content of face-centered cubic (FCC) phases such as TiN and TiNi decreases accordingly. At a V molar ratio of 1.5, the coating demonstrates the best comprehensive performance: Average microhardness of 703 HV10, stable-stage average friction coefficient of 0.36, and wear rate of 2.2×10^-7 g/(cm·r). The performance improvement is mainly attributed to dendrite refinement, the formation of BCC phases, and the resulting dispersion strengthening effect.

Key words: laser cladding, high-entropy alloy, vanadium, microstructure, wear resistance

中图分类号:

TG135.6

刘冉, 陈楚琦, 吴韬. V含量对激光熔覆FeCoCrNiTi基合金涂层组织与耐磨性的影响[J]. 金属热处理, 2025, 50(12): 290-296.

Liu Ran, Chen Chuqi, Wu Tao. Effect of V content on microstructure and wear resistance of laser clad FeCoCrNiTi alloy coating[J]. Heat Treatment of Metals, 2025, 50(12): 290-296.

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V含量对激光熔覆FeCoCrNiTi基合金涂层组织与耐磨性的影响

Effect of V content on microstructure and wear resistance of laser clad FeCoCrNiTi alloy coating

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