Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C

Jie Lu; Han Zhang; Ying Chen; Ling Li; Xuanzhen Liu; Weiwei Xiao; Na Ni; Xiaofeng Zhao; Fangwei Guo; Ping Xiao

doi:10.1016/j.corsci.2020.109191

Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C

Jie Lu, Han Zhang, Ying Chen, Ling Li, Xuanzhen Liu, Weiwei Xiao, Na Ni, Xiaofeng Zhao, Fangwei Guo, Ping Xiao

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Abstract

In this study, the oxidation behavior of AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) with/without Y doping at 1000 °C and 1100 °C was reported. The doping of minor Y is crucial to improving the Al2O3 scale adhesion and achieving its durability at high temperatures. The oxidation rates of Y-doped AlCoCrFeNi2.1 EHEA at 1000 °C and 1100 °C are comparable and even lower compared with conventional Al2O3-forming NiCoCrAlY/CoNiCrAlY alloys. The superior oxidation resistance and highly stable eutectic lamellar structure after high-temperature oxidation make Y-doped AlCoCrFeNi2.1 EHEA show a tremendous potential in high-temperature application.

Original language	English
Pages (from-to)	109191
Journal	Corrosion Science
Volume	180
Early online date	14 Dec 2020
DOIs	https://doi.org/10.1016/j.corsci.2020.109191
Publication status	Published - 1 Mar 2021

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10.1016/j.corsci.2020.109191

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https://linkinghub.elsevier.com/retrieve/pii/S0010938X20324720

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title = "Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C",

abstract = "In this study, the oxidation behavior of AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) with/without Y doping at 1000 °C and 1100 °C was reported. The doping of minor Y is crucial to improving the Al2O3 scale adhesion and achieving its durability at high temperatures. The oxidation rates of Y-doped AlCoCrFeNi2.1 EHEA at 1000 °C and 1100 °C are comparable and even lower compared with conventional Al2O3-forming NiCoCrAlY/CoNiCrAlY alloys. The superior oxidation resistance and highly stable eutectic lamellar structure after high-temperature oxidation make Y-doped AlCoCrFeNi2.1 EHEA show a tremendous potential in high-temperature application.",

author = "Jie Lu and Han Zhang and Ying Chen and Ling Li and Xuanzhen Liu and Weiwei Xiao and Na Ni and Xiaofeng Zhao and Fangwei Guo and Ping Xiao",

year = "2021",

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doi = "10.1016/j.corsci.2020.109191",

language = "English",

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journal = "Corrosion Science ",

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TY - JOUR

T1 - Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C

AU - Lu, Jie

AU - Zhang, Han

AU - Chen, Ying

AU - Li, Ling

AU - Liu, Xuanzhen

AU - Xiao, Weiwei

AU - Ni, Na

AU - Zhao, Xiaofeng

AU - Guo, Fangwei

AU - Xiao, Ping

PY - 2021/3/1

Y1 - 2021/3/1

N2 - In this study, the oxidation behavior of AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) with/without Y doping at 1000 °C and 1100 °C was reported. The doping of minor Y is crucial to improving the Al2O3 scale adhesion and achieving its durability at high temperatures. The oxidation rates of Y-doped AlCoCrFeNi2.1 EHEA at 1000 °C and 1100 °C are comparable and even lower compared with conventional Al2O3-forming NiCoCrAlY/CoNiCrAlY alloys. The superior oxidation resistance and highly stable eutectic lamellar structure after high-temperature oxidation make Y-doped AlCoCrFeNi2.1 EHEA show a tremendous potential in high-temperature application.

AB - In this study, the oxidation behavior of AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) with/without Y doping at 1000 °C and 1100 °C was reported. The doping of minor Y is crucial to improving the Al2O3 scale adhesion and achieving its durability at high temperatures. The oxidation rates of Y-doped AlCoCrFeNi2.1 EHEA at 1000 °C and 1100 °C are comparable and even lower compared with conventional Al2O3-forming NiCoCrAlY/CoNiCrAlY alloys. The superior oxidation resistance and highly stable eutectic lamellar structure after high-temperature oxidation make Y-doped AlCoCrFeNi2.1 EHEA show a tremendous potential in high-temperature application.

U2 - 10.1016/j.corsci.2020.109191

DO - 10.1016/j.corsci.2020.109191

M3 - Article

SN - 0010-938X

VL - 180

SP - 109191

JO - Corrosion Science

JF - Corrosion Science

ER -

Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C

Abstract

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