High temperature oxidation behavior and mechanism of Al0.3CuCrFeNi2 high-entropy alloy with a coherent γ/γ' microstructure

Guoqiang Huang; Jie Wu; Rui Yuan; Yingxi Li; Fanqiang Meng; Penghui Lei; Chenyang Lu; Fujun Cao; Yifu Shen

doi:10.1016/j.corsci.2021.109984

High temperature oxidation behavior and mechanism of Al_0.3CuCrFeNi₂ high-entropy alloy with a coherent γ/γ' microstructure

Guoqiang Huang
, Jie Wu
, Rui Yuan
, Yingxi Li
, Fanqiang Meng
, Penghui Lei
, Chenyang Lu
, Fujun Cao
, Yifu Shen

School of Energy and Power Engineering

Sun Yat-Sen University
Nanjing University of Posts and Telecommunications
Xi'an Jiaotong University
Nanjing University of Aeronautics and Astronautics

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

In this study, the oxidation behavior of the Al_0.3CuCrFeNi₂ HEA with a typical coherent γ/γ' microstructure was systematically investigated by the isothermal oxidation tests at 600, 750 and 900 ℃ in air. The results show that the oxidation kinetics of the Al_0.3CuCrFeNi₂ HEA follow the parabolic law at all three temperatures. As the oxidation temperature increases, the surface segregation of Cu near the grain boundary occurs, leading to different oxidation behavior in the intragranular regions and near the grain boundary regions. The associated formation mechanisms of the oxide scales are proposed and discussed in detail.

Original language	English
Article number	109984
Journal	Corrosion Science
Volume	195
DOIs	https://doi.org/10.1016/j.corsci.2021.109984
State	Published - Feb 2022

Keywords

Formation mechanism
High-entropy Alloy
Oxidation
γ/γ' microstructure

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10.1016/j.corsci.2021.109984

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@article{3a40edb0a7ed41bb94d57a79441ff9a1,

title = "High temperature oxidation behavior and mechanism of Al0.3CuCrFeNi2 high-entropy alloy with a coherent γ/γ' microstructure",

abstract = "In this study, the oxidation behavior of the Al0.3CuCrFeNi2 HEA with a typical coherent γ/γ' microstructure was systematically investigated by the isothermal oxidation tests at 600, 750 and 900 ℃ in air. The results show that the oxidation kinetics of the Al0.3CuCrFeNi2 HEA follow the parabolic law at all three temperatures. As the oxidation temperature increases, the surface segregation of Cu near the grain boundary occurs, leading to different oxidation behavior in the intragranular regions and near the grain boundary regions. The associated formation mechanisms of the oxide scales are proposed and discussed in detail.",

keywords = "Formation mechanism, High-entropy Alloy, Oxidation, γ/γ' microstructure",

author = "Guoqiang Huang and Jie Wu and Rui Yuan and Yingxi Li and Fanqiang Meng and Penghui Lei and Chenyang Lu and Fujun Cao and Yifu Shen",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = feb,

doi = "10.1016/j.corsci.2021.109984",

language = "英语",

volume = "195",

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TY - JOUR

T1 - High temperature oxidation behavior and mechanism of Al0.3CuCrFeNi2 high-entropy alloy with a coherent γ/γ' microstructure

AU - Huang, Guoqiang

AU - Wu, Jie

AU - Yuan, Rui

AU - Li, Yingxi

AU - Meng, Fanqiang

AU - Lei, Penghui

AU - Lu, Chenyang

AU - Cao, Fujun

AU - Shen, Yifu

PY - 2022/2

Y1 - 2022/2

N2 - In this study, the oxidation behavior of the Al0.3CuCrFeNi2 HEA with a typical coherent γ/γ' microstructure was systematically investigated by the isothermal oxidation tests at 600, 750 and 900 ℃ in air. The results show that the oxidation kinetics of the Al0.3CuCrFeNi2 HEA follow the parabolic law at all three temperatures. As the oxidation temperature increases, the surface segregation of Cu near the grain boundary occurs, leading to different oxidation behavior in the intragranular regions and near the grain boundary regions. The associated formation mechanisms of the oxide scales are proposed and discussed in detail.

AB - In this study, the oxidation behavior of the Al0.3CuCrFeNi2 HEA with a typical coherent γ/γ' microstructure was systematically investigated by the isothermal oxidation tests at 600, 750 and 900 ℃ in air. The results show that the oxidation kinetics of the Al0.3CuCrFeNi2 HEA follow the parabolic law at all three temperatures. As the oxidation temperature increases, the surface segregation of Cu near the grain boundary occurs, leading to different oxidation behavior in the intragranular regions and near the grain boundary regions. The associated formation mechanisms of the oxide scales are proposed and discussed in detail.

KW - Formation mechanism

KW - High-entropy Alloy

KW - Oxidation

KW - γ/γ' microstructure

UR - https://www.scopus.com/pages/publications/85120608736

U2 - 10.1016/j.corsci.2021.109984

DO - 10.1016/j.corsci.2021.109984

M3 - 文章

AN - SCOPUS:85120608736

SN - 0010-938X

VL - 195

JO - Corrosion Science

JF - Corrosion Science

M1 - 109984

ER -

High temperature oxidation behavior and mechanism of Al_0.3CuCrFeNi₂ high-entropy alloy with a coherent γ/γ' microstructure

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