Experimental and numerical investigation of the Ti-Ni-Cu coating on AZ91D magnesium alloy by laser surface-modification: The microstructure, wear and corrosion behavior

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2025-05-01 Epub Date: 2025-01-30 DOI:10.1016/j.triboint.2025.110565

Duncai Bao , Boxiang Hong , Chenfeng Yuan , Lipeng Jiang , Xun Zhang , Qian Li , Xiang Li , Zhaoxue Deng

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Abstract

Magnesium alloys are easily exposed to wear and corrosion during service life, hindering their applications. Herein, the Ti-Ni-Cu coatings were designed. Thermal-mechanical simulation of laser cladding on magnesium alloy surface was performed for exploring the optimal cladding parameters. Form the simulation results, laser power of 1200 W, scanning speed of 20 mm/s and spot diameter of 3 mm were applied. A series of characterizations were performed to study the microstructure, corrosion and wear properties of the coating. The results indicated Ni_52.5Ti_33.5Cu₁₄ coating presented the comprehensively enhanced wear resistance than the substrate. Specifically, an increase in coatings’ microhardness by a factor of 6 over substrate was achieved. Besides, the I_corr was one order of magnitude lower than that of the substrate.

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AZ91D镁合金激光表面改性Ti-Ni-Cu涂层的实验与数值研究：显微组织、磨损与腐蚀行为

镁合金在使用寿命期间容易受到磨损和腐蚀，阻碍了其应用。在此，设计了Ti-Ni-Cu涂层。为探索镁合金表面激光熔覆的最佳工艺参数，对镁合金表面激光熔覆过程进行了热力学模拟。仿真结果表明，激光功率为1200 W，扫描速度为20 mm/s，光斑直径为3 mm。进行了一系列表征，研究了涂层的显微组织、腐蚀和磨损性能。结果表明，Ni52.5Ti33.5Cu14涂层的耐磨性比基体得到了全面提高。具体来说，涂层的显微硬度比基材提高了6倍。此外，Icorr比衬底低一个数量级。

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.