The influence of microstructural evolutions on electrochemical corrosion and passive behavior in precipitation-strengthened high-entropy alloys

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

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Author(s)

  • Y.H. Zhou
  • Z.Q. Ren
  • J.H. Luan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number112074
Journal / PublicationCorrosion Science
Volume233
Online published23 Apr 2024
Publication statusPublished - Jun 2024

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85191177173&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(d4deeb03-3ddd-43bf-abdb-09d346f30759).html

Abstract

Effects of microstructural evolutions on electrochemical corrosion properties and passive film characteristics of precipitation-strengthened (Ni2Co2FeCr)92Al4Nb4 high-entropy alloys (HEAs) were investigated in a saline environment. Compared with single-phase FCC alloys, the appearance of nano-sized L12 particles increases the metastable pitting activities and slightly reduces the pitting potential, while the lamellar D019 phase further deteriorates the localized corrosion resistance. The chemical composition and oxide state of passive films are closely related to the different precipitation scenarios. The corrosion morphologies of the single-phase and L12-strengthened alloys are dominated by pitting, whereas the intergranular corrosion (IGC) and intragranular dealloying-like corrosion occur in the D019-strengthened alloy. © 2024 Elsevier Ltd.

Research Area(s)

  • Corrosion behavior, High-entropy alloys, Micro-galvanic corrosion, Microstructural evolutions, Passive film

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Publication fingerprints text

100
Alloy Material Science
100
Microstructural Evo... Material Science
100
Electrochemical Cor... Material Science
100
High Entropy Alloys Material Science
100
Precipitation Stren... Keyphrases
100
Passive Film Keyphrases
100
Passive Movement Keyphrases
100
High-entropy Alloy Keyphrases
100
Electrochemical Pas... Keyphrases
100
microstructure INIS
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Citation Format(s)

[ RIS ] [ BibTeX ]
The influence of microstructural evolutions on electrochemical corrosion and passive behavior in precipitation-strengthened high-entropy alloys. / Zhang, J.Y.; Zhou, Y.H.; Ren, Z.Q. et al.
In: Corrosion Science, Vol. 233, 112074, 06.2024.

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