Enhanced Wear and Corrosion Properties of Mg-Li Alloys Achieved Through Laser Cladding of the Gradient High-Entropy Alloy Coating

34 Pages Posted: 9 Aug 2024

See all articles by Simin Wan

Simin Wan

Harbin Engineering University

Shiyang Li

Harbin Engineering University

xiufang cui

Harbin Engineering University

Guo Jin

Harbin Engineering University

Jinna Liu

Harbin Engineering University

Xin Wen

Hokkaido University

Yuyun Yang

Harbin Engineering University

Abstract

The research difficulties of preparing laser-cladded high-entropy alloy (HEA) coatings on Mg-Li alloys have been overcome through the gradient coating structure design. This work deposits a TiVCuAl/Cu-Al gradient HEA coating on Mg-Li alloys, significantly enhancing the alloy’s comprehensive surface properties.  The gradient coatings are characterized and analyzed for phase structures, microstructures, microhardness, wear and corrosion resistance. The protective coating primarily comprises V-rich BCC1, AlCu2Ti and Mg-rich BCC2 phases, with an average microhardness of 8.43 times that of the substrate (57.85 HV0.3), reaching 487.82 HV0.3. The wear volume loss of the protective coating is 0.09 mm3, only 5.42% compared to the substrate. Meanwhile, the corrosion potential and corrosion current density values of the protective coating are  -0.61 VSCE and 5.41×10-6 A·cm-2.

Keywords: Mg-Li alloy, Laser cladding, High-entropy alloy coating, Wear and corrosion properties

Suggested Citation

Wan, Simin and Li, Shiyang and cui, xiufang and Jin, Guo and Liu, Jinna and Wen, Xin and Yang, Yuyun, Enhanced Wear and Corrosion Properties of Mg-Li Alloys Achieved Through Laser Cladding of the Gradient High-Entropy Alloy Coating. Available at SSRN: https://ssrn.com/abstract=4921153

Simin Wan

Harbin Engineering University ( email )

Harbin, 150001
China

Shiyang Li

Harbin Engineering University ( email )

Harbin, 150001
China

Xiufang Cui (Contact Author)

Harbin Engineering University ( email )

Harbin, 150001
China

Guo Jin

Harbin Engineering University ( email )

Harbin, 150001
China

Jinna Liu

Harbin Engineering University ( email )

Harbin, 150001
China

Xin Wen

Hokkaido University ( email )

5 Kita 8 Jonishi, Kita Ward
Hokkaido Prefecture
Sapporo, 060-0808
Japan

Yuyun Yang

Harbin Engineering University ( email )

Harbin, 150001
China

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