Effect of Mo on Microstructure and Properties of AlCoCrFeNiMox High Entropy Alloy Coatings Prepared by Laser Cladding

被引：6

作者：

Sha Minghong ^{[1
,2
]}

Wang Shuang ^{[2
,3
]}

Li Shengli ^{[1
]}

Jia Chuntang ^{[2
,3
]}

Huang Tiandang ^{[1
]}

Zhu Xiaolei ^{[2
,3
]}

Ai Xingang ^{[1
]}

Liao Xiangwei ^{[2
,3
]}

机构：

[1] Univ Sci & Technol LiaoNing, Sch Met & Mat, Anshan 114051, Peoples R China

[2] State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114009, Peoples R China

[3] Angang Grp, Steel Res Inst, Anshan 114009, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2023年 / 52卷 / 11期

基金：

中国国家自然科学基金;

关键词：

HEA; laser cladding; corrosion resistance; hardness; microstructure; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; PHASE-FORMATION; EVOLUTION;

D O I：

10.12442/j.issn.1002-185X.E20230007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlCoCrFeNiMox (x=0, 0.5, 1.0, 1.5, 2.0) high entropy alloy (HEA) coatings were prepared by laser cladding method. The effect of Mo content on the microstructure, hardness, and corrosion resistance of the coatings was studied. Results show that with increasing the Mo content, the microstructure is changed from (Al, Ni)-rich body-centered cubic (bcc) phase+(Mo-Cr-Fe)-rich sigma phase into (Fe, Ni)-rich bcc phase+(Mo-Cr-Fe)-rich sigma phase+(Al-Fe-Mo)-rich sigma phase+a little AlN (aluminum nitride). Additionally, the coating hardness (HV1) is increased from 6514.4 MPa to 10652.6 MPa. With increasing the Mo addition, the self-corrosion potential of the coating in 3.5wt% NaCl solution is also increased. The coating presents the optimal corrosion resistance at x=1.0.

引用

页码：3685 / 3690

页数：6

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