Szczegóły publikacji
Opis bibliograficzny
Oxidation resistance of Al-containing refractory high-entropy alloys / Elaf A. Anber, David Beaudry, Charlie Brandenburg, Sebastian LECH, Lavina Backman, Daniel L. Foley, Emily L. Wang, Michael Joseph Waters, Loic Perriere, Jean-Philippe Couzinie, James M. Rondinelli, Elizabeth Opila, Mitra L. Taheri // Scripta Materialia ; ISSN 1359-6462. — 2024 — vol. 244 art. no. 115997, s. 1–7. — Bibliogr. s. 6–7, Abstr. — Publikacja dostępna online od: 2024-01-31. — S. Lech - dod. afiliacja: Department of Materials Science & Engineering, Johns Hopkins University, Baltimore, United States
Autorzy (13)
- Anber Elaf A.
- Beaudry David
- Brandenburg Charlie
- AGHLech Sebastian
- Backman Lavina
- Foley Daniel L.
- Wang Emily L.
- Waters Michael Joseph
- Perriere Loic
- Couzinie Jean-Philippe
- Rondinelli James M.
- Opila Elizabeth
- Taheri Mitra L.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 152164 |
|---|---|
| Data dodania do BaDAP | 2024-04-09 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.scriptamat.2024.115997 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Scripta Materialia |
Abstract
Refractory high entropy alloys (RHEAs) hold the promise of superior mechanical properties at high temperatures but are plagued by a lack of oxidation resistance. In this work, the role of Al additions (4.8, and 13 at.%) to HfNbTaTiZr is explored as a means of improving protective oxide scale formation in RHEAs. Oxide formation was resolved using STEM-EDS/EELS, precession electron diffraction, and computational predictions of formation energy. Our results show that oxides with large negative formation energies (i.e., HfO2/ZrO2) always formed near the metal/oxide interface while Al2O3 and oxides with less negative formation energies formed near the surface. The addition of Al prevented pesting in both alloys and formed Al2O3 with 13 at.% Al. While the Al2O3 formed was not continuous, we report the lowest threshold yet to prevent pesting with only 4.8 at.% Al added. These findings provide guidance to future alloy development of Al2O3-forming alloys.