Understanding the impacts of L12 nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys

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

doi:10.1016/j.corsci.2024.112211

Author(s)

J.H. Luan

Related Research Unit(s)

Detail(s)

Original language	English
Article number	112211
Journal / Publication	Corrosion Science
Volume	235
Online published	15 Jun 2024
Publication status	Published - 15 Jul 2024

Link(s)

DOI	DOI https://doi.org/10.1016/j.corsci.2024.112211 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85195849627&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(5d67889f-bb8c-4347-867d-28763c919eb1).html

Abstract

This work investigated the effects of L1₂ nanoprecipitates on the electrochemical corrosion behavior and passive film characteristics of CoCrNiAlTi-type high-entropy alloys (HEAs) in chloride-containing solutions. Compared with the single-phase recrystallized alloys, the precipitation of the L1₂ phase destabilized surface passive films, thus deteriorating the localized corrosion resistance and increasing the metastable pitting activities of the L1₂-strengthened HEA. Influenced by the L1₂-induced chemical inhomogeneities, the increase of Cr(OH)₃ content in passive films together with the high galvanic corrosion tendency between the two phases was considered as the main reason for the increased susceptibility of the L1₂-strengthened alloys to localized corrosion attacks. © 2024 Elsevier Ltd.

Research Area(s)

Electrochemical polarization, High-entropy alloys, Mechanical properties, Nanoscale precipitation, Passive film

Citation Format(s)

[ RIS ] [ BibTeX ]

Understanding the impacts of L1₂ nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys. / Zhang, J.Y.; Chou, T.H.; Zhang, J.X. et al.
In: Corrosion Science, Vol. 235, 112211, 15.07.2024.

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

Zhang, JY , Chou, TH , Zhang, JX, Luan, JH, Zhao, YL & Yang, T 2024, 'Understanding the impacts of L1₂ nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys', Corrosion Science, vol. 235, 112211. https://doi.org/10.1016/j.corsci.2024.112211

Zhang, J. Y., Chou, T. H., Zhang, J. X., Luan, J. H., Zhao, Y. L., & Yang, T. (2024). Understanding the impacts of L1₂ nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys. Corrosion Science, 235, Article 112211. https://doi.org/10.1016/j.corsci.2024.112211

Zhang JY , Chou TH , Zhang JX, Luan JH, Zhao YL , Yang T. Understanding the impacts of L1₂ nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys. Corrosion Science. 2024 Jul 15;235:112211. Epub 2024 Jun 15. doi: 10.1016/j.corsci.2024.112211

Zhang, J.Y. ; Chou, T.H. ; Zhang, J.X. et al. / Understanding the impacts of L1₂ nanoprecipitates on the electrochemical and passive behavior of CoCrNiAlTi-type high-entropy alloys. In: Corrosion Science. 2024 ; Vol. 235.