Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation

Developing high-entropy alloy (HEA) coatings with preferable properties for severe environments is a promising and cost-efficient way. In this work, an original HEA CoCrFeNiCu1-xMox coatings were designed on-demand and successfully prepared on duplex stainless steel (DSS) through coaxial direct lase...

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Autores principales:	Jiakun Wang, Yushan Chen, Yunhua Zhang, Wenying Dai, Qian Xu, Weizhou Li, Yan Liu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	High-entropy alloys Coaxial direct laser deposition Corrosion Slurry erosion wear First-principles calculation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/621290a649024651aa865b849cc0299e
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spelling	oai:doaj.org-article:621290a649024651aa865b849cc0299e2021-11-26T04:24:08ZCorrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation0264-127510.1016/j.matdes.2021.110277https://doaj.org/article/621290a649024651aa865b849cc0299e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521008327https://doaj.org/toc/0264-1275Developing high-entropy alloy (HEA) coatings with preferable properties for severe environments is a promising and cost-efficient way. In this work, an original HEA CoCrFeNiCu1-xMox coatings were designed on-demand and successfully prepared on duplex stainless steel (DSS) through coaxial direct laser deposition technique. The first-principles calculation based on the density functional theory was employed to calculate the characteristics of materials. The results showed that the uniformly distributed Cu could stabilize the face-centered cubic phase structure, hinder the transfer of point defects, and activate the cathode. The synergistic effect of Mo and other HEA elements was beneficial in reducing the point defect density of the passive film, and an appropriate amount of Mo was contributed to grain refinement, solid solution strengthening, and precipitation strengthening of the coating. When the ratio of Cu to Mo is 1:3, a small number of nanoscales second sigma phase (Fe-Cr-Mo) appeared between ordered and disordered, which balanced the coating's corrosion and slurry erosion wear performances. Compared with DSS, the corrosion current density of CoCrFeNiCu0.25Mo0.75 coating was reduced by nearly an order of magnitude, the impedance was increased by 2.5 times, and the erosion wear resistance was increased by 4 to 5 times.Jiakun WangYushan ChenYunhua ZhangWenying DaiQian XuWeizhou LiYan LiuElsevierarticleHigh-entropy alloysCoaxial direct laser depositionCorrosionSlurry erosion wearFirst-principles calculationMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110277- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	High-entropy alloys Coaxial direct laser deposition Corrosion Slurry erosion wear First-principles calculation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	High-entropy alloys Coaxial direct laser deposition Corrosion Slurry erosion wear First-principles calculation Materials of engineering and construction. Mechanics of materials TA401-492 Jiakun Wang Yushan Chen Yunhua Zhang Wenying Dai Qian Xu Weizhou Li Yan Liu Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
description	Developing high-entropy alloy (HEA) coatings with preferable properties for severe environments is a promising and cost-efficient way. In this work, an original HEA CoCrFeNiCu1-xMox coatings were designed on-demand and successfully prepared on duplex stainless steel (DSS) through coaxial direct laser deposition technique. The first-principles calculation based on the density functional theory was employed to calculate the characteristics of materials. The results showed that the uniformly distributed Cu could stabilize the face-centered cubic phase structure, hinder the transfer of point defects, and activate the cathode. The synergistic effect of Mo and other HEA elements was beneficial in reducing the point defect density of the passive film, and an appropriate amount of Mo was contributed to grain refinement, solid solution strengthening, and precipitation strengthening of the coating. When the ratio of Cu to Mo is 1:3, a small number of nanoscales second sigma phase (Fe-Cr-Mo) appeared between ordered and disordered, which balanced the coating's corrosion and slurry erosion wear performances. Compared with DSS, the corrosion current density of CoCrFeNiCu0.25Mo0.75 coating was reduced by nearly an order of magnitude, the impedance was increased by 2.5 times, and the erosion wear resistance was increased by 4 to 5 times.
format	article
author	Jiakun Wang Yushan Chen Yunhua Zhang Wenying Dai Qian Xu Weizhou Li Yan Liu
author_facet	Jiakun Wang Yushan Chen Yunhua Zhang Wenying Dai Qian Xu Weizhou Li Yan Liu
author_sort	Jiakun Wang
title	Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
title_short	Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
title_full	Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
title_fullStr	Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
title_full_unstemmed	Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
title_sort	corrosion and slurry erosion wear performances of coaxial direct laser deposited cocrfenicu1-xmox high-entropy coatings by modulating the second-phase precipitation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/621290a649024651aa865b849cc0299e
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Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation

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