Laser & Infrared, Volume. 55, Issue 5, 713(2025)

Study on processing and properties of Ti-Cu alloyed layer by laser alloying

WU Qian1,2,3, XIE Yan-xiang4、*, WANG Ke1,2,3, YE Fang-xia4, and YANG Chao-feng1
Author Affiliations
  • 1Research Institute of Shaanxi Yanchang Petroleum (Group) Co., Ltd., Xi'an 710065, China
  • 2Shaanxi Oil and Gas Drilling and Pollution Control Engineering Technology Research Center, Xi'an 710065, China
  • 3Shaanxi Key Laboratory of Lacustrine Shale Gas Accumulation and Exploitation, Xi'an 710065, China
  • 4School of Mechanical and Material Engineering, Xi'an University, Xi'an 710065, China
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    Conventional titanium alloys are prone to ignition under conditions of high temperature, pressure, and high-speed airflow, resulting in rapid spread and causing "titanium fire" failures, which significantly limit their application in aero-engines. This study aims to prevent "titanium fire" accidents by preparing a Ti-Cu burn-resistant alloy layer on the surface of Ti6Al4V titanium alloy using laser alloying technology. The morphology of the Ti-Cu burn-resistant alloyed layer was analyzed by optical microscope and SEM, and the micro-hardness of the Ti-Cu burn-resistant alloyed layer was analyzed by Vickers micro-hardness instrument, and finally the burn-resistant behavior of the modified layer was studied by high temperature friction wear testing machine. A continuous dense alloying layer can be formed on the surface of the titanium alloy by the laser alloying technology, The thickness of the Ti-Cu burn-resistant alloyed layer is about 220 μm; The hardness of the modified layer is gradient changes with the depth of alloyed layer, The highest hardness of the Ti-Cu burn-resistant alloyed layer reached 616 HV which is 1.61 times compared with that of the Ti6Al4V titanium alloy. At 600 ℃, The friction coefficient of the Ti6Al4V alloy substrate (0.47) and the Ti-Cu burn-resistant alloyed layer (0.46) are roughly same. At 600 ℃, The main wear mode of both the Ti6Al4V titanium alloy and the Ti-Cu burn-resistant alloyed layer is a mixture of adhesion and abrasion. The wear width of Ti6Al4V titanium alloy is 2.14 times compared with that of Ti-Cu burn-resistant alloyed layer, and the wear volume and wear rate of Ti6Al4V titanium alloy are 5.5 times compared with those of the modified layer.

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    WU Qian, XIE Yan-xiang, WANG Ke, YE Fang-xia, YANG Chao-feng. Study on processing and properties of Ti-Cu alloyed layer by laser alloying[J]. Laser & Infrared, 2025, 55(5): 713

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    Paper Information

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    Received: Mar. 3, 2025

    Accepted: Jul. 11, 2025

    Published Online: Jul. 11, 2025

    The Author Email: XIE Yan-xiang (yxxie@163.com)

    DOI:10.3969/j.issn.1001-5078.2025.05.010

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