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

Jiang Huang¹, Zhikai Zhu¹, Kaiyue Li¹

¹School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China.

Materials (Basel, Switzerland)

|November 26, 2022

Abstract:

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.

Keywords:

HEA WC particles corrosion resistance laser cladding micro-hardness high-entropy alloy coating WC reinforcement laser cladding composite material synthesis mechanical properties

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