吉林大学学报(工学版) ›› 2026, Vol. 56 ›› Issue (7): 1825-1833.doi: 10.13229/j.cnki.jdxbgxb.20251045

• 材料科学与工程 • 上一篇    

感应熔覆制备Mo2C颗粒增强CoCrFeNiMn高熵合金复合涂层的显微组织与摩擦学性能

刘继波1(),陈子夏2,李永亮1,孟超2,廉贞松1()   

  1. 1.潍柴(潍坊)材料成型制造中心有限公司,山东 潍坊 261100
    2.辽宁工程技术大学 材料科学与工程学院,辽宁 阜新 123000
  • 收稿日期:2025-09-26 出版日期:2026-07-01 发布日期:2026-08-12
  • 通讯作者: 廉贞松 E-mail:liujib@weichai.com;lianzs@weichai.com
  • 作者简介:刘继波(1977-),男,高级工程师,硕士. 研究方向:复合材料及其性能.E-mail: liujib@weichai.com

Microstructure and tribological properties of Mo2C particle reinforced CoCrFeNiMn high entropy alloy composite coating prepared by induction cladding

Ji-bo LIU1(),Zi-xia CHEN2,Yong-liang LI1,Chao MENG2,Zhen-song LIAN1()   

  1. 1.Weichai(Weifang) Material Forming & Manufacturing Center Co. ,Ltd. ,Weifang 261100,China
    2.School of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,China
  • Received:2025-09-26 Online:2026-07-01 Published:2026-08-12
  • Contact: Zhen-song LIAN E-mail:liujib@weichai.com;lianzs@weichai.com

摘要:

使用感应熔覆技术首次成功制备了Mo2C/CoCrFeNiMn高熵合金复合涂层。研究了Mo2C颗粒对复合涂层的相组成、微观组织、显微硬度、常温和高温磨损性能的影响。结果表明:复合涂层中除了FCC相外,还存在Mo2C相及析出碳化物相;Mo2C颗粒的加入起到了晶粒细化、第二相强化和固溶强化的效果,同时还促进了小角度晶界和几何必要位错的形成,提高了涂层的显微硬度;常温下磨损表面形成的机械混合层和600 ℃高温下磨损表面形成的氧化釉质层起到了物理屏障的作用,增强了涂层的耐磨性。

关键词: 高熵合金, 感应熔覆, 涂层, Mo2C, 耐磨性

Abstract:

In this study, Mo2C/CoCrFeNiMn high-entropy alloy composite coating was successfully prepared for the first time by induction cladding technology. The effects of Mo2C particles on the phase composition, microstructure, microhardness, room temperature and high temperature wear properties of the composite coating were studied. The results show that in addition to the FCC phase, there are Mo2C phase and precipitated carbide phase in the composite coating. The addition of Mo2C particles has the effect of grain refinement, second phase strengthening and solid solution strengthening. At the same time, it also promotes the formation of small angle grain boundaries and geometric necessary dislocations, and improves the microhardness of the coating. The mechanical mixed layer (MML) formed on the worn surface at room temperature and the oxidized enamel layer formed on the worn surface at 600 ℃ play a physical barrier role, which enhances the wear resistance of the coating.

Key words: high entropy alloy, induction cladding, coating, Mo2C, wear resistance

中图分类号: 

  • TG174.4

图1

各个涂层的XRD图谱及主衍射峰局部放大图"

图2

各个涂层的截面形貌"

表1

图2中不同区域的点扫结果(原子分数)"

PositionCrMnFeCoNiMoC
A118.1417.9424.9019.7219.30--
A218.2818.0225.3419.1319.23--
B116.5217.4424.6918.6618.324.37-
B26.573.1811.796.144.5624.6943.07
B313.2110.3912.585.375.236.5246.7
C111.2414.6536.8315.8216.904.56-
C24.422.2717.013.963.4025.4343.51
C311.517.3616.563.222.9711.5646.82

图3

C0和C50涂层的EBSD分析"

图4

各个涂层的平均显微硬度"

图5

各个涂层在常温和600 ℃高温下的摩擦因数曲线"

图6

各个涂层在常温和600 ℃高温下的平均摩擦因数和磨损失重"

图7

各个涂层在常温和600 ℃高温下的磨损形貌"

表2

常温和600 ℃高温下磨损表面的点扫结果(原子分数)"

PositionCrMnFeCoNiMoWO
P114.1715.1310.3611.4210.79-0.1837.95
P211.2611.7810.7910.7310.224.670.4640.09
P39.169.9212.839.418.725.790.5843.59
P47.788.236.896.756.88-1.7461.73
P55.496.475.076.596.176.481.8061.93
P64.234.527.664.914.759.291.8662.78
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