FeCr相与AlCo相在AlCoCrCuFeNi高熵合金   涂层摩擦过程中的作用分析

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (2): 9-16.

FeCr相与AlCo相在AlCoCrCuFeNi高熵合金涂层摩擦过程中的作用分析

边春华¹, 杨伟杰^2,3, 张维¹, 李邱达¹, 文杰¹, 冯力^*3

1.中核核电运行管理有限公司,浙江海盐 314300;
2.西安派瑞功率半导体变流技术股份有限公司, 陕西西安 710000;
3.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2022-06-21 出版日期:2023-04-28 发布日期:2023-05-05
通讯作者: 冯力(1981-),男,甘肃兰州人,博士,教授.Email:fenglils@lut.edu.cn

Analysis of the effect of FeCr phase and AlCo phase in the friction process of AlCoCrCuFeNi high entropy alloy coating

BIAN Chun-hua¹, YANG Wei-jie^2,3, ZHANG Wei¹, LI Qiu-da¹, WEN Jie¹, FENG Li^*3

1. China Nuclear Power Operation Management Co. Ltd., Haiyan 314300, China;
2. Xi’an Peri Power Semiconductor Converter Technology Co. Ltd., Xi’an 710000, China;
3. School of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2022-06-21 Online:2023-04-28 Published:2023-05-05

摘要/Abstract

摘要： 采用冷喷涂辅助原位合成方法制备AlCoCrCuFeNi_x(x=0.5,1)高熵合金涂层,对涂层微观组织结构和摩擦磨损性能进行表征和测试.然后采用分子动力学的方法模拟了高熵合金涂层中AlCo相和FeCr相的摩擦过程,模拟分析了高熵合金涂层中AlCo相和FeCr相对高熵合金摩擦性能的影响.结果表明:在相同的摩擦条件下,AlCo相所受到的摩擦力大于FeCr相所受到的摩擦力,AlCo相的磨损量要大于FeCr相的磨损量.AlCo相在摩擦过程中产生了粘附与脱附原子,导致总摩擦力上升,而在FeCr相摩擦过程中,没有发现明显的粘附原子.AlCo相内部产生了明显的位错结构,位错总长度随摩擦距离的增加持续增加,并且在摩擦的最终阶段产生了两种混合位错结构,但是在FeCr相的内部并没有发现位错结构.说明FeCr相对AlCoCrCuFeNi高熵合金涂层的耐磨性能有更大的贡献.

关键词: 高熵合金涂层, 分子动力学, FeCr相, AlCo相

Abstract: AlCoCrCuFeNi_x(x=0.5,1) high-entropy alloy coating was prepared by cold spray-assisted in situ synthesis method, and the microstructure structure and friction and wear performance of the coating were characterized and tested. Then, the friction process of AlCo and FeCr phases in high entropy alloy coating was simulated by molecular dynamics method, and the influence of AlCo and FeCr phases on the friction properties of high entropy alloy coating was simulated and analyzed. The results showed that under the same friction conditions, the friction force exerted by the AlCo phase is greater than that exerted by the FeCr phase, and the wear of the AlCo phase is greater than that of the FeCr phase. The AlCo phase produces adhesion and desorption atoms during friction, resulting in an increase in the total friction force, while during the FeCr phase friction, no obvious adhesion atoms are found. An obvious dislocation structure is produced inside the AlCo phase, the total length of the dislocation continues to increase with the increase of the friction distance, and two mixed dislocation structures are produced in the final stage of friction, but no dislocation structure is found inside the FeCr phase. This shows that the FeCr has a greater contribution to the wear resistance of the AlCoCrCuFeNi high-entropy alloy coating.

Key words: high entropy alloy coating, molecular dynamics, FeCr phase, AlCo phase

中图分类号:

TG174.4

边春华, 杨伟杰, 张维, 李邱达, 文杰, 冯力. FeCr相与AlCo相在AlCoCrCuFeNi高熵合金涂层摩擦过程中的作用分析[J]. 兰州理工大学学报, 2023, 49(2): 9-16.

BIAN Chun-hua, YANG Wei-jie, ZHANG Wei, LI Qiu-da, WEN Jie, FENG Li. Analysis of the effect of FeCr phase and AlCo phase in the friction process of AlCoCrCuFeNi high entropy alloy coating[J]. Journal of Lanzhou University of Technology, 2023, 49(2): 9-16.

参考文献

[1] 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].Adv Eng Mater,2004,6(5):299-303.
[2] 齐艳飞,任喜强,周景一,等.高熵合金涂层制备工艺的研究现状 [J].稀有金属材料与工程,2022,51(2):735-742.
[3] 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(16):18-24.
[4] FENG L,YANG W J,MA K,et al.Microstructure and properties of cold spraying AlCoCrCuFeNi_x HEA coatings synthesized by induction remelting [J].Materials Technology,2022,37(13):2567-2579.
[5] 高虹.冷喷涂中激波及粒子沉积过程研究 [D].重庆:重庆大学,2010 .
[6] DETOR A J,SCHUH C A.Grain boundary segregation,chemical ordering and stability of nanocrystalline alloys:Atomistic computer simulations in the Ni-W system [J].Acta Materialia,2007,55(12):4221-4232.
[7] WYNBLATT P,SHI Z.Relation between grain boundary segregation and grain boundary character in FCC alloys [J].Journal of Materials Science,2005,40:2765-2773.
[8] BOS C,SOMMER F,MITTEMEIJER E J.An atomistic analysis of the interface mobility in a massive transformation [J].Acta Materialia,2005,53(20):5333-5341.
[9] ZHANG J,ZHENG C W,LI D Z.A multi-phase field model for static recrystallization of hot deformed austenite in a C-Mn steel [J].Acta Metallurgica Sinica,2018,31(2):1-8.
[10] 魏驰翔.单晶锆摩擦行为的分子动力学模拟 [D].成都:西南交通大学,2019.
[11] 冯力,杨伟杰,马凯,等.AlCoCrCuFeNi_x高熵合金涂层组织性能 [J/OL].中国有色金属学报:1-21[2022-10-11].http://kns.cnki.net/kcms/detail/43.1238.TG.20220222.1651.001.html.
[12] WEB Y H,ZHOU F X,LIU Y M.Molecular dynamics simulation of microstructure of nanocrystalline copper [J].Chinese Physics Letters,2001,18(3):411-413.
[13] ZHU P Z,HU Y Z,MA T B,et al.Molecular dynamics study on friction due to ploughing and adhesion in nanometric scratching process [J].Tribology Letters,2010,41(1):41-46.
[14] 栾智存.基于分子动力学模拟的粗糙表面接触与摩擦特性研究 [D].北京:北京理工大学,2015.
[15] SHA Z D,SORKIN V,BRANICIO P S,et al.Large-scale molecular dynamics simulations of wear in diamond-like carbon at the nanoscale [J].Applied Physics Letters,2013,103(7):073118.
[16] 朱科浩.纳米晶体锆摩擦行为的分子动力学模拟 [D].成都:西南交通大学,2020.
[17] GOSTMANN B,LANTZ M A.Atomistic wear in a single asperity sliding contact [J].Physical Review Letters,2008,101(12):125501-125513.
[18] BEHROUZ D,MILLER R E,KLUG D D.Multiscale simulation of material removal processes at the nanoscale [J].Journal of the Mechanics & Physics of Solids,2007,55(11):2384-2405.