Wear-Resistant Fe<sub>6</sub>AlCoCrNi Medium-Entropy Alloy Coating Made by Laser Cladding

Ke Chen; Hongbo Pan; Mingyu Wu; Xianfa Wang; Dongyang Li

doi:10.3390/met12101686

Metals (Oct 2022)

Wear-Resistant Fe<sub>6</sub>AlCoCrNi Medium-Entropy Alloy Coating Made by Laser Cladding

Ke Chen,
Hongbo Pan,
Mingyu Wu,
Xianfa Wang,
Dongyang Li

Affiliations

Ke Chen: Department of Materials Engineering, College of Engineering, Nanjing Agricultural University, Nanjing 210095, China
Hongbo Pan: Key Laboratory of Metallurgical Emission Reduction and Resources Recycling of Ministry of Education, Anhui University of Technology, Ma’anshan 243002, China
Mingyu Wu: Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G2H5, Canada
Xianfa Wang: Department of Materials Engineering, College of Engineering, Nanjing Agricultural University, Nanjing 210095, China
Dongyang Li: Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G2H5, Canada

DOI: https://doi.org/10.3390/met12101686
Journal volume & issue: Vol. 12, no. 10
p. 1686

Abstract

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An Fe6AlCoCrNi medium-entropy (MEA) coating was coated on a steel substrate by laser cladding. The micro-structure, crystal structure, phases, and wear properties of the coating were investigated. The coating was mainly composed of a dendritic face-center cubic (FCC) phase, which showed preferred crystal orientation of , normal to the coating surface, and a body-center cubic (BCC) phase. The MEA coating exhibited satisfactory rigidity with superior wear resistance at different loads and temperatures, much higher than that of the steel substrate. When the test temperature increased from 293 K to 573 K, the coefficient of friction (COF) of the coating markedly decreased from about 0.75 to 0.35; a large decrease in wear was also observed. The wear mechanism of the MEA coating was abrasion wear at room temperature, while the wear of the coating at high temperatures involved considerable oxidation, which enhanced the wear resistance of the coating.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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