Microstructures and Mechanical Properties of an AlCoCrNiFe HEA/WC Reinforcing Particle Composite Coating Prepared by Laser Cladding

In this study, an AlCoCrFeNi HEA coating with a 10% mass fraction of WC particles was fabricated on the surface of 316L stainless steel by laser cladding technology. WC powders were formed by the partial or total dissolution of the initial WC particles with different sizes in the AlCoCrFeNi HEA coat...

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Bibliographic Details
Published in:Materials 2022-11, Vol.15 (22), p.8020
Main Authors: Huang, Jiang, Zhu, Zhikai, Li, Kaiyue, Shi, Wenqing, Zhao, Yang, He, Minyi
Format: Article
Language:English
Subjects:
Coating
Coatings
Corrosion and anti-corrosives
Corrosion resistance
Hardness
Laser beam cladding
Lasers
Mechanical properties
Microhardness
Microstructure
Morphology
Powders
Research methodology
Stainless steels
Steel, Stainless
Tungsten carbide
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Summary:In this study, an AlCoCrFeNi HEA coating with a 10% mass fraction of WC particles was fabricated on the surface of 316L stainless steel by laser cladding technology. WC powders were formed by the partial or total dissolution of the initial WC particles with different sizes in the AlCoCrFeNi HEA coating. Micron WC particles were dispersed in the coating homogeneously, and millimeter WC particles were deposited on the bottom of coating because of their high density. The addition of the WC powers prompted Columnar dendritic and cellular grains, observed in the bottom and top regions of the coating, respectively. Additionally, this led to a higher micro-hardness and better corrosion resistance than that of the pure HEA coating.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15228020