Effect of Al addition on microstructure and wear resistance of Co-free high-entropy alloy coatings

doi:10.13251/j.issn.0254-6051.2023.11.045

Abstract

Abstract: Al_xCrFeMnNi high-entropy alloy coatings (x=0.2,0.4,0.6,0.8,1) were successfully prepared on a Q235 steel substrate by plasma transfer arc. The influence of Al addition on the phase constituent, microstructure, and mechanical properties of the HEA coatings was investigated. The results show that, due to the high-entropy effect, the Al_xCrFeMnNi HEA coatings are mainly composed of simple BCC and FCC phases and a small amount of carbide phases. Moreover, the Al addition inhibits the formation of FCC phases, and the inter-dendritic areas are significantly increased with the increase of Al content. When the Al addition is 0.8, the average Vickers hardness of the HEA coating is 386.5 HV0.2, average friction coefficient is 0.595, and the most stable wear resistance is obtained.

Key words: Co-free high-entropy alloy, plasma transferred arc, Al addition, microstructure, wear resistance

CLC Number:

TG113

Wei Shiyong, Wang Chaomin, Peng Wenyi, Chen Yun, Luo Rukai, Liu Wenzheng. Effect of Al addition on microstructure and wear resistance of Co-free high-entropy alloy coatings[J]. Heat Treatment of Metals, 2023, 48(11): 276-281.

References

[1]Cantor B, Chang I T H, Knight P, et al. Microstructural development in equiatomic multicomponent alloys[J]. Materials Science and Engineering, 2004, 375-377: 213-218.
[2]Yeh J W, Chen S K, Lin S J, et al. Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes[J]. Advanced Engineering Materials, 2004, 6: 299-303.
[3]Zhou J, Zhang Y, Wang Y L, et al. Solid solution alloys of AlCoCrFeNiTi_x with excellent room-temperature mechanical properties[J]. Applied Physics Letters, 2007, 90(18): 253.
[4]Yu P F, Zhang L J, Cheng H, et al. The high-entropy alloys with high hardness and soft magnetic property prepared by mechanical alloying and high-pressure sintering[J]. Intermetallics, 2016, 70: 82-87.
[5]Qin G, Chen R R, Liaw P K, et al. An as-cast high-entropy alloy with remarkable mechanical properties[J]. Nanoscale, 2020, 12: 3965-3976.
[6]Yan X L, Guo H, Yang W, et al. Al_0.3Cr_xFeCoNi high-entropy alloys with high corrosion resistance and good mechanical properties[J]. Journal of Alloys and Compounds, 2021, 860: 158436.
[7]吕莎莎, 祖宇飞, 陈国清, 等. 陶瓷颗粒增强Cr_0.5MoNbWTi难熔高熵合金复合材料的制备及其力学性能[J]. 无机材料学报, 2021, 36(4): 386-392.
Lü Shasha, Zu Yufei, Chen Guoqing, et al. Preparation and mechanical property of the ceramic-reinforced Cr_0.5MoNbWTi refractory high-entropy alloy matrix composites[J]. Journal of Inorganic Materials, 2021, 36(4): 386-392.
[8]颜建辉, 张孝蹯, 汪异, 等. WMoNbCrTi高熵合金的力学性能及其渗硅后的氧化行为[J]. 材料热处理学报, 2022, 43(5): 62-70.
Yan Jianhui, Zhang Xiaofan, Wang Yi, et al. Mechanical properties of WMoNbCrTi HEA and its oxidation behavior after siliconizing[J]. Transactions of Materials and Heat Treatment, 2022, 43(5): 62-70.
[9]魏耀光, 郭刚, 李静, 等. 难熔高熵合金在航空发动机上的应用[J]. 航空材料学报, 2019, 39(5): 82-93.
Wei Yaoguang, Guo Gang, Li Jing, et al. Application of refractory high entropy alloys on aero-engines[J]. Journal of Aeronautical Materials, 2019, 39(5): 82-93.
[10]Tong C J, Chen Y L, Chen S K, et al. Microstructure characterization of Al_xCoCrCuFeNi high-entropy alloy system with multiprincipal elements[J]. Metallurgical and Materials Transactions A, 2005, 36: 881-893.
[11]Liu Y Y, Chen Z, Shi J C, et al. The effect of Al content on microstructures and comprehensive properties in Al_xCoCrCuFeNi high entropy alloys[J]. Vacuum, 2019, 161: 143-149.
[12]钱金泰, 田权伟, 张国琎, 等. CoCrFeNiAl_x(x=1, 1.5, 2)高熵合金的高温氧化行为[J]. 稀有金属与硬质合金, 2019, 47(5): 69-73.
Qian Jintai, Tian Quanwei, Zhang Guojin, et al. High-temperature oxidation behavior of CoCrFeNiAl_x (x=1, 1.5, 2) high-entropy alloys[J]. Rare Metals and Cemented Carbides, 2019, 47(5): 69-73.
[13]Zhao Y, Wang M L, Cui H Z, et al. Effects of Ti-to-Al ratios on the phases, microstructures, mechanical properties, and corrosion resistance of Al_2-xCoCrFeNiTi_x high-entropy alloys[J]. Journal of Alloys and Compounds, 2019, 805: 585-596.
[14]Ogura M, Fukushima T, Zeller R, et al. Structure of the high entropy alloy Al_xCrFeCoNi: fcc versus bcc[J]. Journal of Alloys and Compounds, 2017, 715: 454-459.
[15]Zhang J, Qiu H, Zhu H, et al. Effect of Al additions on the microstructures and tensile properties of Al_xCoCr3Fe5Ni high entropy alloys[J]. Materials Characterization, 2021, 175: 111091.
[16]Hu R, Du J, Jiang J, et al. Microstructure and corrosion properties of Al_xCuFeNiCoCr(x=0.5, 1.0, 1.5, 2.0) high entropy alloys with Al content[J]. Journal of Alloys and Compounds, 2022, 921: 165455.
[17]Liu Y Y, Chen Z, Chen Y Z, et al. Effect of Al content on high temperature oxidation resistance of Al_xCoCrCuFeNi high entropy alloys (x=0, 0.5, 1, 1.5, 2)[J]. Vacuum, 2019, 169: 108837.
[18]Li X F, Feng Y H, Wang X, et al. Microstructures and properties of AlCrFeNiMn_x high-entropy alloy coatings fabricated by laser cladding on a copper substrate[J]. Journal of Alloys and Compounds, 2022, 926: 166778.
[19]Zhang F Y, Wang L Q, Yan S, et al. Effect of Al content on microstructure and mechanical properties of atmosphere plasma sprayed Al_xCoCrFeNi high-entropy alloy coatings under post-annealing[J]. Surface and Coatings Technology, 2022, 446: 128804.
[20]Zhang Y, Yang X, Liaw P. Alloy design and properties optimization of high-entropy alloys[J]. JOM, 2012, 64: 830-838.
[21]Guo L, Ou X Q, Ni Song, et al. Effects of carbon on the microstructures and mechanical properties of FeCoCrNiMn high entropy alloys[J]. Materials Science and Engineering A, 2019, 746: 356-362.
[22]单际国, 李辉, 任家烈. 聚焦光束粉末堆焊熔池的凝固特征及微观组织形成机理[J]. 金属学报, 2002(5): 555-560.
Shan Jiguo, Li Hui, Ren Jialie. Solidification characteristics of molten pool and formation mechanism of microstructure of light beam surfacing layer[J]. Acta Metallurgica Sinica, 2002(5): 555-560.