Effect of Al content on the oxidation behavior of Y/Hf-doped AlCoCrFeNi high-entropy alloy

Jie Lu; Ying Chen; Han Zhang; Ling Li; Liming Fu; Xiaofeng Zhao; Fangwei Guo; Ping Xiao

Effect of Al content on the oxidation behavior of Y/Hf-doped AlCoCrFeNi high-entropy alloy

Jie Lu, Ying Chen, Han Zhang, Ling Li, Liming Fu, Xiaofeng Zhao, Fangwei Guo, Ping Xiao

Materials Engineering

Shanghai Jiao Tong University

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

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Abstract

In this study, three types of Y/Hf-doped AlCoCrFeNi high-entropy alloys (HEAs) with different Al content were manufactured and their oxidation behavior at 1100 °C was systematically studied. Depending on the Al content, the HEAs show two-phase or triple-phase microstructure. All HEAs exhibit extremely slow oxidation rate and meanwhile the oxidation rate gradually reduces with the increasing Al content resulting from the gradually increasing columnar grain size in the α-Al2O3 scale. The extremely low oxidation rate and the strong interfacial bonding make the innovative Y/Hf-doped HEAs to be promising materials for high temperature oxidation resistance.

Original language	English
Journal	Corrosion Science
Early online date	25 Apr 2020
Publication status	Published - 2020

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Corrosion Science-2020.04.20Accepted author manuscript, 2.98 MB

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title = "Effect of Al content on the oxidation behavior of Y/Hf-doped AlCoCrFeNi high-entropy alloy",

abstract = "In this study, three types of Y/Hf-doped AlCoCrFeNi high-entropy alloys (HEAs) with different Al content were manufactured and their oxidation behavior at 1100 °C was systematically studied. Depending on the Al content, the HEAs show two-phase or triple-phase microstructure. All HEAs exhibit extremely slow oxidation rate and meanwhile the oxidation rate gradually reduces with the increasing Al content resulting from the gradually increasing columnar grain size in the α-Al2O3 scale. The extremely low oxidation rate and the strong interfacial bonding make the innovative Y/Hf-doped HEAs to be promising materials for high temperature oxidation resistance.",

author = "Jie Lu and Ying Chen and Han Zhang and Ling Li and Liming Fu and Xiaofeng Zhao and Fangwei Guo and Ping Xiao",

year = "2020",

language = "English",

journal = "Corrosion Science",

issn = "0010-938X",

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TY - JOUR

T1 - Effect of Al content on the oxidation behavior of Y/Hf-doped AlCoCrFeNi high-entropy alloy

AU - Lu, Jie

AU - Chen, Ying

AU - Zhang, Han

AU - Li, Ling

AU - Fu, Liming

AU - Zhao, Xiaofeng

AU - Guo, Fangwei

AU - Xiao, Ping

PY - 2020

Y1 - 2020

N2 - In this study, three types of Y/Hf-doped AlCoCrFeNi high-entropy alloys (HEAs) with different Al content were manufactured and their oxidation behavior at 1100 °C was systematically studied. Depending on the Al content, the HEAs show two-phase or triple-phase microstructure. All HEAs exhibit extremely slow oxidation rate and meanwhile the oxidation rate gradually reduces with the increasing Al content resulting from the gradually increasing columnar grain size in the α-Al2O3 scale. The extremely low oxidation rate and the strong interfacial bonding make the innovative Y/Hf-doped HEAs to be promising materials for high temperature oxidation resistance.

AB - In this study, three types of Y/Hf-doped AlCoCrFeNi high-entropy alloys (HEAs) with different Al content were manufactured and their oxidation behavior at 1100 °C was systematically studied. Depending on the Al content, the HEAs show two-phase or triple-phase microstructure. All HEAs exhibit extremely slow oxidation rate and meanwhile the oxidation rate gradually reduces with the increasing Al content resulting from the gradually increasing columnar grain size in the α-Al2O3 scale. The extremely low oxidation rate and the strong interfacial bonding make the innovative Y/Hf-doped HEAs to be promising materials for high temperature oxidation resistance.

M3 - Article

SN - 0010-938X

JO - Corrosion Science

JF - Corrosion Science

ER -

Effect of Al content on the oxidation behavior of Y/Hf-doped AlCoCrFeNi high-entropy alloy

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