Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy
- Authors
- Choi, Won June; Park, Chun Woong; Song, Yongwook; Choi, Hyunjoo; Byun, Jongmin; Kim, Young Do
- Issue Date
- Dec-2020
- Publisher
- SPRINGER
- Citation
- JOM, v.72, no.12, pp.4594 - 4603
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOM
- Volume
- 72
- Number
- 12
- Start Page
- 4594
- End Page
- 4603
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1677
- DOI
- 10.1007/s11837-020-04439-3
- ISSN
- 1047-4838
- 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 degrees C and 800 degrees 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 degrees C for 3 h under air atmosphere, and the detailed microstructure was investigated using various analyses. The specimen that was pack-cemented at 800 degrees 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 degrees 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.
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