激光加工微织构对TC4钛合金表面AlCrN涂层耐磨性的影响

doi:10.13251/j.issn.0254-6051.2025.08.044

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 278-285.DOI: 10.13251/j.issn.0254-6051.2025.08.044

激光加工微织构对TC4钛合金表面AlCrN涂层耐磨性的影响

刘书琪, 李子涵, 苏波泳, 王恒, 黄希

南通大学机械工程学院, 江苏南通 226019

收稿日期:2025-03-13 修回日期:2025-06-17 出版日期:2025-08-25 发布日期:2025-09-10
通讯作者: 黄希,副教授,硕士生导师,E-mail:huangxi@ntu.edu.cn
作者简介:刘书琪(2000—),女,硕士研究生,主要研究方向为激光加工及表面改性技术,E-mail:19955518376@163.com。
基金资助:
江苏省自然科学青年基金(BK20240952);南通市重大科技成果转化计划(XA2023005);南通市自然科学基金(JC2023060,JC2023079);江苏省研究生科研与实践创新计划(KYCX23_3392)

Effect of laser fabricated micro-texture on wear resistance of AlCrN coating on TC4 titanium alloy

Liu Shuqi, Li Zihan, Su Boyong, Wang Heng, Huang Xi

School of Mechanical Engineering, Nantong University, Nantong Jiangsu 226019, China

Received:2025-03-13 Revised:2025-06-17 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 利用脉冲光纤激光器在TC4钛合金表面制备不同参数的微织构,通过SEM、显微硬度计和摩擦磨损试验机等分析微织构对AlCrN涂层形貌、界面结合力及摩擦磨损性能的影响。结果表明,合金表面制备微织构可改善涂层状态,减少涂层微裂纹数量,抑制表面大液滴现象,增强涂层-基体界面结合效果,从而抑制涂层剥离和脱落。微织构尺寸为$\phi$200 μm,面积占有率为10%时,涂层结合强度最高,结合力可达44.8 N,相比于无微织构合金涂层提高了92.3%。微织构尺寸小于$\phi$150 μm时,涂层表面完整性较好,耐磨性能优异。微织构尺寸为$\phi$150 μm、面积占有率为10%时,涂层耐磨性最好,是无织构试样的1.697倍。

关键词: TC4钛合金, 微织构, AlCrN涂层, 结合力, 耐磨性

Abstract: Micro-textures with different parameters were prepared on the surface of TC4 titanium alloy using a pulsed fiber laser. Effect of micro-texture on morphology, interfacial bonding force, and friction-wear properties of AlCrN coating was analyzed by means of SEM, micro-hardness tester, and friction-wear testing machine. The results show that micro-texture prepared on the surface of the alloy can improve the coating state, reduce the number of micro-crack in the coating, suppress the phenomenon of large droplets on the surface, and enhance the interfacial bonding effect between the coating and the substrate, thereby inhibiting the peeling and delamination of the coating. When the micro-texture size is $\phi$200 μm and the area fraction is 10%, the coating bonding strength is the highest, with the bonding force reaching 44.8 N, which is 92.3% higher than that of the coating on the alloy without micro-texture. When the micro-texture size is smaller than $\phi$150 μm, the coating surface exhibits good integrity and excellent wear resistance. When the micro-texture size is $\phi$150 μm and the area fraction is 10%, the coating shows the best wear resistance, which is 1.697 times that of the specimen without micro-texture.

Key words: TC4 titanium alloy, micro-texture, AlCrN coating, binding force, wear resistance

中图分类号:

TH117

刘书琪, 李子涵, 苏波泳, 王恒, 黄希. 激光加工微织构对TC4钛合金表面AlCrN涂层耐磨性的影响[J]. 金属热处理, 2025, 50(8): 278-285.

Liu Shuqi, Li Zihan, Su Boyong, Wang Heng, Huang Xi. Effect of laser fabricated micro-texture on wear resistance of AlCrN coating on TC4 titanium alloy[J]. Heat Treatment of Metals, 2025, 50(8): 278-285.

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激光加工微织构对TC4钛合金表面AlCrN涂层耐磨性的影响

Effect of laser fabricated micro-texture on wear resistance of AlCrN coating on TC4 titanium alloy

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