Effect of initial grain size on oxidation resistance of L12-strengthened Al-Fe-Cr-Cu-Ni high-entropy alloy at 900 ℃

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

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Author(s)

  • G.Q. Huang
  • J. Ju
  • X.M. Feng
  • Y.F. Shen
  • J.C. Gao
  • M.S. Li
  • F.Q. Meng

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number159285
Journal / PublicationApplied Surface Science
Volume652
Online published5 Jan 2024
Publication statusPublished - 15 Apr 2024

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85181831348&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(4af49877-9188-4c1e-8f00-d376f915c898).html

Abstract

The oxidation behavior of L12-strengthened Al0.3FeCrCuNi2 high-entropy alloy (HEA) with various initial grain sizes was investigated by isothermal oxidation at 900 °C in air. The results show that the starting grain size has a significant effect on the oxidation kinetic process. Reducing the grain size promotes the direct formation of more protective Al-rich oxide layer in the regions near the grain boundaries (GBs), and allows the development of a denser inner Al2O3 layer in the intragranular regions, thereby improving the oxidation resistance. This effect is mainly attributed to more significant surface Cu segregation near GBs due to grain refinement. © 2024 Elsevier B.V.

Research Area(s)

  • Grain size, High-entropy alloy, L12/FCC microstructure, Oxidation behavior

Fingerprint

Publication fingerprints text

100
oxidation INIS
100
alloys INIS
100
grain size INIS
100
entropy INIS
100
Grain Size Material Science
100
Oxidation Resistanc... Material Science
100
High Entropy Alloys Material Science
100
Grain Boundary Keyphrases
100
Fe-Cr Keyphrases
100
Cu-Ni Keyphrases
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Citation Format(s)

[ RIS ] [ BibTeX ]
Effect of initial grain size on oxidation resistance of L12-strengthened Al-Fe-Cr-Cu-Ni high-entropy alloy at 900 ℃. / Huang, G.Q.; Chou, T.H.; Liu, S.F. et al.
In: Applied Surface Science, Vol. 652, 159285, 15.04.2024.

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