Corrosion-resistant L12-strengthened high-entropy alloy with high strength and large ductility

J. Y. Zhang; T. H. Chou; Y. H. Zhou; J. H. Luan; Y. L. Zhao; T. Yang

doi:10.1016/j.corsci.2023.111593

Author(s)

Y. H. Zhou
J. H. Luan
Y. L. Zhao

Related Research Unit(s)

Detail(s)

Original language	English
Article number	111593
Journal / Publication	Corrosion Science
Volume	225
Online published	18 Oct 2023
Publication status	Published - Dec 2023

Link(s)

DOI	DOI https://doi.org/10.1016/j.corsci.2023.111593 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85174458276&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(aa828a2c-79a3-4dc7-9204-af29ef8e71ec).html

Abstract

Corrosion-resistant alloys with high strength and large ductility are desirable for applications in harsh environments where high structural load-carrying capacity is required. In this work, we designed an L1₂-strengthened high-entropy alloy (HEA) of composition (NiCo)₇₇Cr₁₃Al₅Nb₅ (at.%) that combines excellent mechanical properties and good corrosion resistance. The formation of a thin passive film of non-stoichiometric compounds with an amorphous structure, characterized by an enrichment of Cr₂O₃ and Nb₂O₅, contributes to the superior localized corrosion resistance. The precipitation strengthening brought about by coherent L1₂ particles and the multi-stage plastic deformation dominated by stacking faults (SFs) provides ultrahigh strength and appreciable ductility, respectively. © 2023 Elsevier Ltd

Research Area(s)

Corrosion behavior, Deformation microstructure, High-entropy alloys, Mechanical properties, Passive film

Citation Format(s)

[ RIS ] [ BibTeX ]

Corrosion-resistant L1₂-strengthened high-entropy alloy with high strength and large ductility. / Zhang, J. Y.; Chou, T. H.; Zhou, Y. H. et al.
In: Corrosion Science, Vol. 225, 111593, 12.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Zhang, JY , Chou, TH, Zhou, YH, Luan, JH, Zhao, YL & Yang, T 2023, 'Corrosion-resistant L1₂-strengthened high-entropy alloy with high strength and large ductility', Corrosion Science, vol. 225, 111593. https://doi.org/10.1016/j.corsci.2023.111593

Zhang, J. Y., Chou, T. H., Zhou, Y. H., Luan, J. H., Zhao, Y. L., & Yang, T. (2023). Corrosion-resistant L1₂-strengthened high-entropy alloy with high strength and large ductility. Corrosion Science, 225, Article 111593. https://doi.org/10.1016/j.corsci.2023.111593

Zhang JY , Chou TH, Zhou YH, Luan JH, Zhao YL, Yang T. Corrosion-resistant L1₂-strengthened high-entropy alloy with high strength and large ductility. Corrosion Science. 2023 Dec;225:111593. Epub 2023 Oct 18. doi: 10.1016/j.corsci.2023.111593

Zhang, J. Y. ; Chou, T. H. ; Zhou, Y. H. et al. / Corrosion-resistant L1₂-strengthened high-entropy alloy with high strength and large ductility. In: Corrosion Science. 2023 ; Vol. 225.