Effect of Y2O3 on microstructure and properties of CoCrFeNiTiNb high entropy alloy coating on Ti-6Al-4V surface by laser cladding

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外文摘要：The effects of Y2O3 on the microstructure,microhardness,wear resistance,high-temperature oxidation resistance,hot corrosion resistance,and electrochemical corrosion behaviour of CoCrFeNiTiNb high entropy alloy coatings formed on Ti-6Al-4V alloy surfaces were studied.The results show that the addition of Y2O3 changes the proportion of the phase but does not change its type.The average grain size is only 1/4.7 of that of the high entropy alloy(HEA)coating,and the fine-grained strengthening leads to increases in the microhardness and wear resistance of 21.8％and 26.9％,respectively.The addition of Y2O3 enhances the denseness and bonding properties of the oxide and corrosion product layers,reducing the oxidation and hot corrosion rates by 60.3％and 40.3％,respectively.The addition of Y2O3 doubles the corrosion resistance which is attributed to the refinement of the grains,the increased proportion of HCP and TiN,and the weakening of galvanic coupling corrosion.

外文关键词：

Laser claddingHigh entropy alloy coatingsRare earthsWear propertiesHigh temperature propertiesElectrochemical corrosion

作者：

Zhen Li、Wei Zhao、Kedong Yu、Ning Guo、Guangchun Xiao、Zhiming Wang、Hui Zhang

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作者单位：

College of Mechanical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan,250353,China

Shandong Institute of Mechanical Design and Research,Jinan,250031,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of Chinaprojects of Shandong Province"Youth Innovation Science and Technology Support Plan"Key Research and Development Project of Shandong ProvinceNatural Science Foundation of Shandong Province

项目编号：

51805285516052372021KJ0262018GGX103031ZR2021ME023

出版年：

2024

DOI：

10.1016/j.jre.2023.02.015

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(3)

参考文献量73