Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy

Won June Choi; Chun Woong Park; Yongwook Song; Hyunjoo Choi; Jongmin Byun; Young Do Kim

doi:10.1007/s11837-020-04439-3

Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy

Won June Choi, Chun Woong Park, Yongwook Song, Hyunjoo Choi, Jongmin Byun, Young Do Kim

Dept. of Materials Science & Engineering

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

4 Scopus citations

Abstract

In this study, Al pack cementation was conducted on a high-entropy alloy (HEA), and the oxidation behavior of the pack-cemented HEA was investigated. The alloy was fabricated via powder metallurgy (PM). Al pack cementation was performed at 500°C and 800°C for up to 5 h. The microstructure was analyzed after the pack cementation process, and the phase identification was conducted. The oxidation test was conducted at 1000°C for 3 h under air atmosphere, and the detailed microstructure was investigated using various analyses. The specimen that was pack-cemented at 800°C for 5 h exhibited improved oxidation resistance, whereas the specimen that was not subjected to pack cementation and the one that was pack-cemented at 500°C for 5 h demonstrated poor oxidation resistances. Microstructure and phase analyses were used to examine the diffusion of atoms and determine the oxidation behavior with regard to atomic diffusion.

Original language	English
Pages (from-to)	4594-4603
Number of pages	10
Journal	JOM
Volume	72
Issue number	12
DOIs	https://doi.org/10.1007/s11837-020-04439-3
State	Published - Dec 2020

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title = "Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy",

abstract = "In this study, Al pack cementation was conducted on a high-entropy alloy (HEA), and the oxidation behavior of the pack-cemented HEA was investigated. The alloy was fabricated via powder metallurgy (PM). Al pack cementation was performed at 500°C and 800°C for up to 5 h. The microstructure was analyzed after the pack cementation process, and the phase identification was conducted. The oxidation test was conducted at 1000°C for 3 h under air atmosphere, and the detailed microstructure was investigated using various analyses. The specimen that was pack-cemented at 800°C for 5 h exhibited improved oxidation resistance, whereas the specimen that was not subjected to pack cementation and the one that was pack-cemented at 500°C for 5 h demonstrated poor oxidation resistances. Microstructure and phase analyses were used to examine the diffusion of atoms and determine the oxidation behavior with regard to atomic diffusion.",

author = "Choi, \{Won June\} and Park, \{Chun Woong\} and Yongwook Song and Hyunjoo Choi and Jongmin Byun and Kim, \{Young Do\}",

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doi = "10.1007/s11837-020-04439-3",

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T1 - Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy

AU - Choi, Won June

AU - Park, Chun Woong

AU - Song, Yongwook

AU - Choi, Hyunjoo

AU - Byun, Jongmin

AU - Kim, Young Do

PY - 2020/12

Y1 - 2020/12

N2 - In this study, Al pack cementation was conducted on a high-entropy alloy (HEA), and the oxidation behavior of the pack-cemented HEA was investigated. The alloy was fabricated via powder metallurgy (PM). Al pack cementation was performed at 500°C and 800°C for up to 5 h. The microstructure was analyzed after the pack cementation process, and the phase identification was conducted. The oxidation test was conducted at 1000°C for 3 h under air atmosphere, and the detailed microstructure was investigated using various analyses. The specimen that was pack-cemented at 800°C for 5 h exhibited improved oxidation resistance, whereas the specimen that was not subjected to pack cementation and the one that was pack-cemented at 500°C for 5 h demonstrated poor oxidation resistances. Microstructure and phase analyses were used to examine the diffusion of atoms and determine the oxidation behavior with regard to atomic diffusion.

AB - In this study, Al pack cementation was conducted on a high-entropy alloy (HEA), and the oxidation behavior of the pack-cemented HEA was investigated. The alloy was fabricated via powder metallurgy (PM). Al pack cementation was performed at 500°C and 800°C for up to 5 h. The microstructure was analyzed after the pack cementation process, and the phase identification was conducted. The oxidation test was conducted at 1000°C for 3 h under air atmosphere, and the detailed microstructure was investigated using various analyses. The specimen that was pack-cemented at 800°C for 5 h exhibited improved oxidation resistance, whereas the specimen that was not subjected to pack cementation and the one that was pack-cemented at 500°C for 5 h demonstrated poor oxidation resistances. Microstructure and phase analyses were used to examine the diffusion of atoms and determine the oxidation behavior with regard to atomic diffusion.

UR - https://www.scopus.com/pages/publications/85094181524

U2 - 10.1007/s11837-020-04439-3

DO - 10.1007/s11837-020-04439-3

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VL - 72

SP - 4594

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JO - JOM

JF - JOM

IS - 12

ER -

Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy

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