[1]王兴阳,王　虎.NbC含量对钢表面AlCoCrCuFeNiMn（NbC）x高熵合金组织和性能的影响[J].焊管,2022,45(6):8-13.[doi:10.19291/j.cnki.1001-3938.2022.06.002]
　WANG Xingyang,WANG Hu.Effect of NbC Content on Microstructure and Properties of AlCoCrCuFeNiMn（NbC）x High Entropy Alloy on Steel Surface[J].,2022,45(6):8-13.[doi:10.19291/j.cnki.1001-3938.2022.06.002]
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NbC含量对钢表面AlCoCrCuFeNiMn（NbC）x高熵合金组织和性能的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第6期
页码:
8-13
栏目:
试验与研究
出版日期:
2022-06-28

文章信息/Info

Title:
Effect of NbC Content on Microstructure and Properties of AlCoCrCuFeNiMn（NbC）x High Entropy Alloy on Steel Surface
文章编号:
10.19291/j.cnki.1001-3938.2022.06.002
作者:
王兴阳; 王　虎
1. 唐山松下产业机器有限公司，河北 唐山063020；2. 北华航天工业学院 材料工程学院，河北 廊坊 065000
Author(s):
WANG Xingyang;  WANG Hu
1. Panasonic Welding Systems（Tangshan）Co., Ltd., Tangshan 063020, Hebei, China； 2. College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, Hebei, China
关键词:
等离子熔覆; 高熵合金; 显微组织; 硬度; 耐磨性
Keywords:
plasma cladding;  high entropy alloy;  microstructure;  hardness;  wear resistance
分类号:
TG401
DOI:
10.19291/j.cnki.1001-3938.2022.06.002
文献标志码:
A
摘要:
为了研究NbC对高熵合金的硬度及耐磨性的影响，利用等离子熔覆技术在Q235钢板上制备AlCoCrCuFeNiMn（NbC）x（x=0.1、0.2、0.3、0.4，摩尔比）高熵合金熔覆层，采用扫描电镜（SEM）附带能谱仪（EDS）、X射线衍射仪（XRD）、洛氏硬度计和湿砂橡胶轮式磨损试验机对熔覆层的组织形貌、析出相成分、物相结构、硬度和耐磨性进行了分析。结果表明，熔覆层基体组织由FCC+BCC固溶体组成，加入C和Nb元素后，高熵合金的高熵效应并不能抑制NbC的析出，熔覆层组织有NbC析出；随着（NbC）摩尔比的增加，NbC的形态由多边形块状向十字状枝晶结构和长条状结构转变，且尺寸随之增大，熔覆层的表面硬度和耐磨性不断提高，当（NbC）的摩尔比达到0.4时，熔覆层硬度提高了21.3%；当（NbC）摩尔比达到0.3时，高熵合金熔覆层的耐磨性和高铬铸铁相当，是熔覆层基体耐磨性的3.3倍。
Abstract:
In order to study the effect of NbC on the hardness and wear resistance of high entropy alloy, AlCoCrCuFeNiMn（NbC）x（x = 0.1, 0.2, 0.3, 0.4, molar ratio） high entropy alloy cladding layer was prepared on Q235 steel by plasma cladding. The microstructure, composition of precipitated phase, phase structure, hardness and wear resistance were analyzed by scanning electron microscopy （SEM） with energy dispersive spectrometer （EDS）, X-ray diffraction （XRD）, rockwell hardness tester and wet sand rubber wheel wear testing machine. The results show that crystal structure of the cladding layers are composed of a mixed structure of FCC+BCC solid solutions. After adding C and Nb elements, NbC has been precipitated in the cladding layers, which mean that the high entropy effect of the high entropy alloy does not inhibit the precipitation of NbC. The morphology of NbC changes from polygonal block to cross dendritic structure and long strip structure, and the size of NbC increases with the increasing of the molar ratio of （NbC）. The surface hardness and wear resistance of the cladding layers improve continuously. When the molar ratio of （NbC） is 0.4, the hardness of the cladding layers increase by 21.3%. When the molar ratio of NbC is 0.3, the wear resistance of high entropy alloys reach the level of high-chromium iron, about 3.3 times of matrix alloy.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2022-01-18作者简介：王兴阳（1989—），男，满族，河北承德人，硕士，工程师，现主要从事焊接技术的研发工作。
更新日期/Last Update: 2022-06-21