激光熔覆CoCrFeNiTi<em><sub>x</sub></em>高熵合金涂层的组织与性能

doi:10.19976/j.cnki.43-1448/TF.2024015

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摘要为了探究Ti元素对高熵合金涂层组织与性能的影响,利用激光熔覆技术在Q235基体表面制备CoCrFeNiTi_x (x=0.4、0.6、0.8、1.0)涂层,采用XRD、SEM、EDS等方法分析涂层的相结构和显微组织,用显微维氏硬度计和摩擦磨损试验机测试涂层的硬度和耐磨性。结果表明：涂层的显微组织由胞状晶向树枝晶转变,相结构由BCC和FCC组成。涂层显微硬度的提高归因于固溶强化和细晶强化的共同作用,涂层的磨损机理主要为磨粒磨损和黏着磨损,并伴有轻微氧化。当x=0.8时,涂层的硬度(HV)可达524,磨痕较为平整,耐磨性优异。

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关键词 ：激光熔覆, 高熵合金, 显微组织, 显微硬度, 耐磨性

Abstract：In order to study the effects of Ti element on the microstructure and properties of high-entropy alloy coatings, CoCrFeNiTi_x (x=0.4, 0.6, 0.8, 1.0) coatings were prepared on the surface of Q235 substrate using laser cladding technology, and the phase structure and microstructure of the coatings were analysed by XRD, SEM, EDS, etc., and the hardness and wear resistance of the coatings were tested by micro-Vickers hardness tester and friction and wear tester. The results show that the microstructure of the coating changes from cellular crystal to dendritic crystal, and the phase structure consists of BCC and FCC. The increase in microhardness of the coatings is attributed to the combined effect of solid solution strengthening and fine crystal strengthening, and the wear mechanisms of the coatings are mainly abrasive wear and adhesive wear, accompanied by slight oxidation. When x=0.8, the hardness (HV) of the coating reaches 524, with relatively flat abrasive marks and excellent wear resistance.

Key words： laser cladding high-entropy alloy microstructure microhardness wear resistance

收稿日期: 2024-03-06 出版日期: 2024-05-31

ZTFLH:

TG174.4

基金资助:黑龙江省科学院院长基金(YZ2023GJS01); 院所基本应用技术研究专项(ZNBZ2022GJS01); 黑龙江省教育厅基本科研业务费资助项目(2020-KYYWF-0699)

通讯作者: 王永东,教授,博士。电话：15004652950;E-mail: wyd04@163.com

引用本文:

宫书林, 王永东, 李艳春, 宋美慧. 激光熔覆CoCrFeNiTi_x高熵合金涂层的组织与性能[J]. 粉末冶金材料科学与工程, 2024, 29(2): 118-124.
GONG Shulin, WANG Yongdong, LI Yanchun, SONG Meihui. Microstructure and properties of CoCrFeNiTi_x high-entropy alloy coating by laser cladding. Materials Science and Engineering of Powder Metallurgy, 2024, 29(2): 118-124.

链接本文:

http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2024015 或 http://pmbjb.csu.edu.cn/CN/Y2024/V29/I2/118

[1] 张扬帆, 周睿, 陶慧, 等. 退火处理对粉末冶金 CoCrFeNiC_0.05高熵合金热轧板显微组织和力学性能的影响[J]. 粉末冶金材料科学与工程, 2023, 28(5): 448-455.
ZHANG Yangfan, ZHOU Rui, TAO Hui, et al.Effects of annealing on microstructure and mechanical properties of powder metallurgy hot rolled CoCrFeNiC_0.05 high-entropy alloy sheet[J]. Materials Science and Engineering of Powder Metallurgy, 2023, 28(5): 448-455.
[2] 黄绍服, 曾祥领, 彭振, 等. 高熵合金涂层研究进展[J]. 特种铸造及有色合金, 2023, 43(7): 876-883.
HUANG Shaofu, ZENG Xiangling, PENG Zhen, et al.Research progress in high entropy alloy coatings[J]. Special Casting and Nonferrous Alloys, 2023, 43(7): 876-883.
[3] WEI G, YAN C.Effect of laser remelting on microstructure and mechanical properties of CrMnFeCoNi high entropy alloy[J]. China Welding, 2021, 30(2): 1-10.
[4] 周芃, 李可然, 胡飞, 等. 添加Be对CoCrFeNi高熵合金组织和性能影响的研究[J]. 精密成形工程, 2022, 14(12): 41-49.
ZHOU Peng, LI Keran, HU Fei, et al.Effect of adding Be on microstructure and properties of CoCrFeNi high entropy alloy[J]. Journal of Netshape Forming Engineering, 2022, 14(12): 41-49.
[5] 马世忠, 孙荣禄, 牛伟, 等. 激光熔覆CoCrFeNiW_x高熵合金涂层的组织及性能研究[J]. 表面技术, 2023, 52(3): 429-437.
MA Shizhong, SUN Ronglu, NIU Wei, et al.Microstructure and properties of CoCrFeNiW_x high entropy alloy coated by laser cladding[J]. Surface Technology, 2023, 52(3): 429-437.
[6] YE Q F, FENG K, LI Z G, et al.Microstructure and corrosion properties of CrMnFeCoNi high entropy alloy coating[J]. Applied Surface Science, 2017, 396: 1420-1426.
[7] LÖBEL M, LINDNER T, LAMPKE T. Enhanced wear behavior of spark plasma sintered AlCoCrFeNiTi high entropy alloy composites[J]. Materials, 2018, 11(11): 2225.
[8] LIU J, LIU H, CHEN P J, et al.Microstructural characterization and corrosion behaviour of AlCoCrFeNiTi_x high-entropy alloy coatings fabricated by laser cladding[J]. Surface and Coatings Technology, 2019, 361: 63-74.
[9] 唐秋逸, 纪秀林. 高熵合金及其涂层的耐磨性研究进展[J]. 热加工工艺, 2021, 50(16): 18-24.
TANG Qiuyi, JI Xiulin.Research progress on wear resistance of high entropy alloys and their coatings[J]. Hot Working Technology, 2021, 50(16): 18-24.
[10] 王永东, 宫书林, 汤明日, 等. 激光熔覆工艺对高熵合金组织与性能影响[J]. 焊接学报, 2023, 44(8): 116-122, 136.
WANG Yongdong, GONG Shulin, TANG Mingri, et al.Effect of laser cladding process on the microstructure and properties of high entropy alloys[J]. Transactions of the China Welding Institution, 2023, 44(8): 116-122, 136.
[11] XIN B, ZHOU X, CHENG G, et al.Microstructure and mechanical properties of thin-wall structure by hybrid laser metal deposition and laser remelting process[J]. Optics and Laser Technology, 2020, 127: 106087.
[12] 刘径舟. 激光熔覆CoCrFeMnNiC_x高熵合金涂层的组织和性能研究[D]. 昆明: 昆明理工大学, 2021.
LIU Jingzhou.Microstructure and properties of laser cladding CoCrFeMnNiC_x high entropy alloy coating[D]. Kunming: Kunming University of Science and Technology, 2021.
[13] GU Z, XI S Q, SUN C F.Microstructure and properties of laser cladding and CoCr_2.5FeNi₂Ti_x high-entropy alloy composite coatings[J]. Journal of Alloys and Compounds, 2020, 819: 152986.
[14] 李智, 胡德枫, 葛毓立, 等. 纳米金属陶瓷复合层多步电沉积工艺及性能[J]. 稀有金属材料与工程, 2023, 52(6): 2227-2235.
LI Zhi, HU Defeng, GE Yuli, et al.Multi-step electrodeposition process and properties of nano-cermet composite coating[J]. Rare Metal Materials and Engineering, 2023, 52(6): 2227-2235.
[15] 刘昊, 高强, 郜文鹏, 等. 激光熔覆CoCrFeNiNb_x高熵合金涂层的高温摩擦磨损性能[J]. 摩擦学学报, 2022, 42(5): 966-977.
LIU Hao, GAO Qiang, GAO Wenpeng, et al.High temperature tribological properties of CoCrFeNiNb_x high-entropy alloy coatings by laser cladding[J]. Tribology, 2022, 42(5): 966-977.