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纯铝基体表面原位微锻冷喷涂制备Ti6Al4V抗空蚀涂层

LIU Jianwu PEI Yunzhen LIU Weijie DENG Chunming CHU Xin XIE Yingchun

材料工程2025，Vol.53Issue(12)：24-31,8.

材料工程2025，Vol.53Issue(12)：24-31,8.DOI:10.11868/j.issn.1001-4381.2025.000175

纯铝基体表面原位微锻冷喷涂制备Ti6Al4V抗空蚀涂层

Ti6Al4V anti-cavitation coating prepared by in-situ micro-forging cold spraying on aluminum substrate

LIU Jianwu ¹PEI Yunzhen ²LIU Weijie ³DENG Chunming ³CHU Xin ³XIE Yingchun³

作者信息

1. AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,Hunan,China
2. National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510651,China||Institute of Laser Intelligent Manufacturing and Precision Machining,School of Mechanical Engineering,Guangxi University,Nanning 530004,China
3. National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510651,China
折叠

摘要

Abstract

To solve the problem of cavitation protection on the surface of aluminum alloy flow-handling components,Ti6Al4V coatings are prepared by in-situ micro-forging assisted cold spraying.Large-size 202 stainless steel particles are mixed into Ti6Al4V powder during the spraying process to promote the plastic deformation of Ti6Al4V powder and form dense coatings.The effects of cold spraying process parameters on the quality of Ti6Al4V coating are investigated using optical microscopy,scanning electron microscopy,microhardness tester,ultrasonic cavitation testing machine,and 3D profilometers,leading to the determination of the optimal process parameters.The results show that the porosity of Ti6Al4V coating decreases with the increase of shot peening particle content.When the shot peening content is 70%(volume fraction),the Ti6Al4V coating is compact and the porosity is only 0.46%.The microhardness of the coating gradually increases to 394HV0.3,which is higher than the microhardness of forged Ti6Al4V alloy(370HV0.3).The cavitation erosion test results show that the cavitation erosion depth of Ti6Al4V coating is only 4.742 µm after 2 h cavitation erosion,and the cavitation erosion resistance of Ti6Al4V coating is 77 times that of Al substrate(365.199 µm).The Ti6Al4V coating prepared by in-situ micro-forging cold spray is dense,has high hardness,and exhibits good interparticle bonding,effectively inhibiting the initiation and propagation of cracks during cavitation,which leads to particle detachment.Therefore,it possesses excellent cavitation erosion resistance.

关键词

冷喷涂/原位微锻/Ti6Al4V/涂层/抗空蚀性能

Key words

cold spraying/in-situ micro-forging/Ti6Al4V/coating/cavitation erosion resistance

分类

矿业与冶金

引用本文复制引用

LIU Jianwu,PEI Yunzhen,LIU Weijie,DENG Chunming,CHU Xin,XIE Yingchun..纯铝基体表面原位微锻冷喷涂制备Ti6Al4V抗空蚀涂层[J].材料工程,2025,53(12):24-31,8.

基金项目

国家重点科技发展计划资助项目(2024YFB4609600,2023YFE010800,2022YFB4601601) （2024YFB4609600,2023YFE010800,2022YFB4601601）

广东省科学院打造综合产业技术创新中心专项资助(2022GDASZH-2022010107) （2022GDASZH-2022010107）

广东省科技计划项目资助(2023B1212120008,2023B1212060045) （2023B1212120008,2023B1212060045）

广州市科技项目(2023A04J1626) （2023A04J1626）

材料工程

OA北大核心

ISSN：1001-4381

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