Ti元素对激光熔覆AlCoCrFeNiTi0.5合金涂层组织和耐磨性的影响

张丽, 沙明红, 纪良浩, 李胜利, 张峻巍, 安玉奇

doi:10.16577/j.issn.1001-1560.2022.0271

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材料保护 >

2022 , Vol. 55 >Issue 10: 24 - 30

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0271

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Ti元素对激光熔覆AlCoCrFeNiTi_0.5合金涂层组织和耐磨性的影响

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(1.营口理工学院材料科学与工程学院，辽宁营口 115014；2.辽宁科技大学材料与冶金学院，辽宁鞍山 114051;3.鞍钢集团工程技术有限公司，辽宁鞍山 114021；4.营口骑士达机械设备有限公司，辽宁营口 115014)

张丽(1988-)，硕士，助教，主要从事激光表面改性、功能防护涂层的制备及使役损伤行为研究，电话：15941274093，E-mail：zhangli_198803@126.com；

沙明红(1976-)，博士，副教授，主要从事高熵合金的结构、性能及其激光表面改性研究，电话：13591200297，E-mail：hongsmh_116@163.com

收稿日期: 2022-04-17

修回日期: 2022-04-29

录用日期: 2022-05-24

网络出版日期: 2023-12-23

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Effect of Titanium on the Microstructure and Wear Resistance of AlCoCrFeNiTi_0.5 Alloy Coating Prepared by Laser Cladding

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(1.College of Materials Science and Engeneering，Yingkou Institute of Technology,Yingkou 115014,China;2.School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114021,China;3.Ansteel Engineering Technology Corporation Limited,Anshan 114021,China;4.Yingkou Qishida Machinery Equipment Co.,Ltd.,Yingkou 115014,China)

Received date: 2022-04-17

Revised date: 2022-04-29

Accepted date: 2022-05-24

Online published: 2023-12-23

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摘要

研究Ti元素的添加对AlCoCrFeNi高熵合金涂层组织、物相、显微硬度及耐磨损性能的影响。通过激光熔覆技术在纯铁表面制备AlCoCrFeNi和AlCoCrFeNiTi0.5高熵合金涂层，使用扫描电镜、X射线衍射仪、显微硬度仪、摩擦磨损试验机对涂层的显微组织、物相组成、显微硬度、耐磨损性能、磨损形貌进行分析研究。结果表明：AlCoCrFeNiTi0.5高熵合金涂层，其相组成有Co3Ti、AlFe固溶相以及Al80Cr13Co7复杂相，出现典型的成分均匀的网状调幅分解组织，在组织结构上优于AlCoCrFeNi高熵合金涂层；同时AlCoCrFeNiTi0.5高熵合金涂层的平均显微硬度达到989 HV4.9 N，比AlCoCrFeNi提高了32%，磨损量降低了85%。

关键词： 高熵合金; 钛元素; 耐磨性; 微观组织; 激光涂层

本文引用格式

张丽, 沙明红, 纪良浩, 李胜利, 张峻巍, 安玉奇 . Ti元素对激光熔覆AlCoCrFeNiTi_0.5合金涂层组织和耐磨性的影响[J]. 材料保护, 2022 , 55(10) : 24 -30 . DOI: 10.16577/j.issn.1001-1560.2022.0271

Abstract

This paper aims to study the effect of adding Ti element on the structure,phase,microhardness and wear resistance of AlCoCrFeNi high-entropy alloy coatings.The AlCoCrFeNi and AlCoCrFeNiTi0.5 high-entropy alloy coatings were prepared by laser cladding technology on the surface of pure iron,and the phase composition,microstructure,microhardness,wear resistance and wear morphology of the coatings were analyzed using scanning electron microscope,X-ray diffraction,microhardness tester and friction and wear testing machine.Results showed that the phase composition of AlCoCrFeNiTi0.5 high-entropy alloy coating included Co3Ti,AlFe solid solution phase and Al80Cr13Co7 complex phase,presenting a typical network-like spinodal decomposition structure with uniform composition,which was better than the structure of AlCoCrFeNi high-entropy alloy coating.Meanwhile,the average microhardness of the AlCoCrFeNiTi0.5 high-entropy alloy coating reached 989 HV4.9 N,which was 32% higher than that of AlCoCrFeNi coating,and the wear extent declined by 85%.

Key words： high-entropy alloy; titanium element; wear resistance; microstructure; laser coating

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ISSN 1001-1560　CN 42-1215/TB
主管部门：中国机械工业联合会
主办单位：武汉材料保护研究所有限公司
编辑出版：《材料保护》编辑部

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