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    Rights statement: This is the author’s version of a work that was accepted for publication in Surface and Coatings Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Surface and Coatings Technology, 432, 2022 DOI: 10.1016/j.surfcoat.2021.128009

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    Embargo ends: 23/12/22

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Microstructure and tribological behaviors of FeCoCrNiMoSix high-entropy alloy coatings prepared by laser cladding

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Article number128009
<mark>Journal publication date</mark>25/02/2022
<mark>Journal</mark>Surface and Coatings Technology
Volume432
Number of pages9
Publication StatusPublished
Early online date23/12/21
<mark>Original language</mark>English

Abstract

FeCoCrNiMo high-entropy alloy (HEA) has attracted great interests due to its excellent corrosion resistance, but it suffers relatively low hardness and poor tribological performance. In this work, a systematic study on microstructural evolution and tribological behavior of equiatomic FeCoCrNiMoSix (x = 0.5, 1.0, 1.5) HEA coatings prepared by laser cladding (LC) on Q235 steel substrates is reported. Confirmed by X-ray diffraction analysis (XRD) and energy dispersive spectrometry (EDS) results, these coatings mainly consist of Fe-rich FCC and FeMoSi phases. The increase of Si content leads to greater lattice distortion and promotes the formation of Si-rich intermetallics, which can significantly improve the hardness and the wear resistance of the FeCoCrNiMoSix coatings. The best wear resistance is achieved in FeCoCrNiMoSi1.0 coating, which the wear mechanism is a combined abrasive and adhesive wear.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Surface and Coatings Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Surface and Coatings Technology, 432, 2022 DOI: 10.1016/j.surfcoat.2021.128009