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.
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Acknowledgements
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2016R1A6A1A03013422 and 2018R1D1A1A09084113).
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Choi, W.J., Park, C.W., Song, Y. et al. Oxidation Behavior of Pack-Cemented Refractory High-Entropy Alloy. JOM 72, 4594–4603 (2020). https://doi.org/10.1007/s11837-020-04439-3
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DOI: https://doi.org/10.1007/s11837-020-04439-3