Microstructure and properties of argon arc cladded CoCr x FeMoNiAl high entropy alloy coatings on Q235 steel

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2023-08-11 DOI:10.1515/mt-2023-0129

Xiaowei Wang, Bensheng Huang, Jingli Tang, Tianning Li, Siyu Huang

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引用次数: 0

Abstract

Abstract In this paper, the CoFeMoNiAlCr x coatings with different chromium content (x = 0, 0.3, 0.6, 0.9 and 1.2) were prepared by argon arc cladding technology on Q235 steel. The microstructure and phases of the coatings were analyzed by OM, SEM, EDS and XRD. The hardness, wear resistance and corrosion resistance of the coatings were tested by microhardness tester, friction and wear tester and electrochemical workstation. The results show that the highest hardness is obtained in the CoFeMoNiAlCr x=0 high entropy alloy coatings, about 500 HV, which is about 3 times than the hardness of Q235 steel (the substrate). With the chromium content of the CoFeMoNiAlCr x coatings increasing, the wear resistance increases first, and then decreases. When the chromium content is 0.9, the wear resistance of the coating is the highest with the wear loss about 2.6 mg and the friction coefficient about 0.52. The corrosion resistance of the coatings decreases with a small amount of chromium addition. When the Cr content in the coating is close to the atomic ratio, the content of the body-centered cubic phase structure increases, and the face-centered cubic phase structure appears in the coating.

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Q235钢氩弧包覆CoCr x FeMoNiAl高熵合金涂层的组织与性能

摘要:本文采用氩弧熔覆技术在Q235钢表面制备了不同铬含量(x = 0、0.3、0.6、0.9和1.2)的CoFeMoNiAlCr x涂层。采用OM、SEM、EDS和XRD分析了涂层的微观组织和物相。采用显微硬度计、摩擦磨损试验机和电化学工作站对镀层的硬度、耐磨性和耐蚀性进行了测试。结果表明:CoFeMoNiAlCr x=0高熵合金涂层的硬度最高，约为500 HV，是Q235钢(基体)硬度的3倍左右;随着CoFeMoNiAlCr x涂层中铬含量的增加，其耐磨性先增大后减小。当铬含量为0.9时，涂层的耐磨性最高，磨损损失约为2.6 mg，摩擦系数约为0.52。铬含量越少，镀层的耐蚀性越低。当涂层中Cr含量接近原子比时，涂层中体心立方相结构的含量增加，出现面心立方相结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.