Microstructure and properties of laser clad high-entropy alloy coating on aluminium

被引：55
作者：
Shi, Yan [1 ,2 ,3 ]
Ni, Cong [1 ,2 ,3 ]
Liu, Jia [1 ,2 ,3 ]
Huang, Genzhe [1 ,2 ,3 ]
机构：
[1] Changchun Univ Sci & Technol, Sch Electromech Engn, Changchun 130022, Jilin, Peoples R China
[2] Engn Res Ctr Laser Proc Univ Jilin Prov, Changchun 130022, Jilin, Peoples R China
[3] Natl Base Int Sci & Technol Cooperat Opt, Changchun 130022, Jilin, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2018年 / 34卷 / 10期
关键词：
Laser cladding; high-entropy alloy; microhardness; corrosion resistance; SOLID-SOLUTION PHASE; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; AL; BEHAVIOR; EVOLUTION; STABILITY; SUBSTRATE;
D O I：
10.1080/02670836.2018.1444921
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An AtCrFeNiCuCo high-entropy alloy (HEA) coating was synthesised on an aluminium substrate by laser cladding.Samples were characterised using an optical microscope, X-ray diffraction, scanning electron microscopy with energy-dispersive spectroscopy, a microhardness tester, and an electrochemical workstation. The results showed that the interface between the cladding layer and matrix was sound, while the HEA coating consisted of BCC and FCC solid solutions and an Al-rich phase resulting from substrate dilution. The microstructure of the dad layer comprised both columnar and equiaxed grains, The average microhardness of the coating was 550 HV0.2, and it exhibited better corrosion resistance than the aluminium matrix in a 1 mol L-_1 H2SO4 solution. The typical corrosion characteristic of the coating was pitting and localised corrosion.
引用
收藏
页码：1239 / 1245
页数：7
相关论文
共 40 条
[1]   Synthesis and microstructure characterization of Ni-Cr-Co-Ti-V-Al high entropy alloy coating on Ti-6Al-4V substrate by laser surface alloying [J].
Cai, Zhaobing ;
Jin, Guo ;
Cui, Xiufang ;
Liu, Zhe ;
Zheng, Wei ;
Li, Yang ;
Wang, Liquan .
MATERIALS CHARACTERIZATION, 2016, 120 :229-233
[2]   Tribological characteristics of an A356 aluminium alloy laser surface alloyed with nickel and Ni-Ti-C [J].
D'Amato, C. ;
Buhagiar, J. ;
Betts, J. C. .
APPLIED SURFACE SCIENCE, 2014, 313 :720-729
[3]   Comparison of coaxial and off-axis nozzle configurations in one step process laser cladding on aluminum substrate [J].
da Silva, Marcel Dias ;
Partes, Knut ;
Seefeld, Thomas ;
Vollertsen, Frank .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2012, 212 (11) :2514-2519
[4]   Laser cladding of MMC coatings on aluminium substrate: influence of composition and micro structure on mechanical properties [J].
Dubourg, L ;
Ursescu, D ;
Hlawka, F ;
Cornet, A .
WEAR, 2005, 258 (11-12) :1745-1754
[5]   Relationship between the widths of supercooled liquid regions and bond parameters of Mg-based bulk metallic glasses [J].
Fang, SS ;
Xiao, X ;
Lei, X ;
Li, WH ;
Dong, YD .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2003, 321 (1-2) :120-125
[6]   Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys [J].
Guo, Sheng ;
Ng, Chun ;
Lu, Jian ;
Liu, C. T. .
JOURNAL OF APPLIED PHYSICS, 2011, 109 (10)
[7]   Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase [J].
Guo, Sheng ;
Liu, C. T. .
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2011, 21 (06) :433-446
[8]   Microstructure and properties of Fe5Cr5SiTiCoNbMoW coating by laser cladding [J].
Guo, Y. X. ;
Liu, Q. B. ;
Zhou, F. .
SURFACE ENGINEERING, 2018, 34 (04) :283-288
[9]   Corrosion behavior of FeCoNiCrCux high-entropy alloys in 3.5% sodium chloride solution [J].
Hsu, YJ ;
Chiang, WC ;
Wu, JK .
MATERIALS CHEMISTRY AND PHYSICS, 2005, 92 (01) :112-117
[10]   Dry sliding wear behavior of laser clad TiVCrAlSi high entropy alloy coatings on Ti-6Al-4V substrate [J].
Huang, Can ;
Zhang, Yongzhong ;
Vilar, Rui ;
Shen, Jianyun .
MATERIALS & DESIGN, 2012, 41 :338-343
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