Microstructure and Properties of Fe0.5 CrMnAlCu High Entropy Alloy and Coating
Fe0.5CrMnAlCu high entropy alloy and coating were prepared using vacuum arc melting technology and cold spray assisted induction remelting.XRD,SEM,microhardness tester,and abrasive wear testing machine were used to test and analyze the phase structure,microstructure,and wear resistance of high entropy alloys and coatings.The results show that the Fe0.5 CrMnAlCu high entropy alloy prepared by vacuum arc melting technology has a solid solution structure of FCC and BCC phases,and its microstructure is mainly dendritic and interdendritic structure.The phase structure of the Fe0.5 CrMnAlCu high entropy alloy coating synthesized by cold spray assisted induction remelting is a single BCC structure,and its microstructure is dendritic and interdendritic structure.Due to the larger grain size of the Fe0.5 CrMnAlCu high entropy alloy coating synthesized by induction remelting compared to the grain size of the high entropy alloy prepared by arc melting,and the difference in atomic size of the coating δ being greater than that of the alloy,the hardness of the induction remelting synthesized Fe0.5 CrMnAlCu high entropy alloy coating is 1.37 times of the hardness of the vacuum arc melted high entropy alloy,and its wear rate is 18% lower than that of vacuum arc melted high entropy alloy.The wear mechanisms of Fe0.5 CrMnAlCu high entropy alloy and coating prepared by vacuum arc melting and cold spray assisted induction remelting are mainly adhesive wear and abrasive wear.
vacuum arc meltingcold sprayinginduction remeltinghigh-entropy alloys and coatings
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