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Coatings 2018, 8(3), 107; https://doi.org/10.3390/coatings8030107

Effects of V and Cr on Laser Cladded Fe-Based Coatings

1
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
2
Shenyang Dalu Laser Technology CO., Ltd., Shenyang 110136, China
3
School of Stomatology, China Medical University, Shenyang 110002, China
*
Author to whom correspondence should be addressed.
Received: 7 February 2018 / Revised: 4 March 2018 / Accepted: 13 March 2018 / Published: 15 March 2018
(This article belongs to the Special Issue Laser Surface Treatment)
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Abstract

Fe-based coatings with high V and Cr content were obtained by laser cladding using Fe-based powder with different Cr3C2 and FeV50 content. The results showed that Fe-based coatings were uniform and dense. The constituent phases were mainly composed of α-Fe solid solution with the increase of Cr3C2 and FeV50, γ-Fe and V8C7 phases were achieved. The microstructure of the coatings exhibited a typical dendrite structure. The concentration of C, V and Cr were saturated in dendritic areas, and the other alloying elements were mainly dissolved in the interdendritic areas. The hardness and wear resistance of Fe-based coatings were enhanced with the Cr3C2 and FeV50 addition. The specimen with 15% Cr3C2 and 16% FeV50 had the highest hardness of 66.1 ± 0.6 HRC, which was 1.05 times higher than the sample with 4.5% Cr3C2 and 5% FeV50, and the wear resistance of the former was three times greater than the latter. View Full-Text
Keywords: laser cladding; Fe-based coating; microstructure; hardness; wear resistance laser cladding; Fe-based coating; microstructure; hardness; wear resistance
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Wang, H.; Zhang, S.; Zhang, C.; Wu, C.; Zhang, J.; Abdullah, A.O. Effects of V and Cr on Laser Cladded Fe-Based Coatings. Coatings 2018, 8, 107.

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