| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-20: Understanding and Protecting Refractory High Entropy Alloys from High Temperature Oxidation through Use of High Entropy Rare Earth Oxide Coatings |
| Author(s) |
Isabella Marino, Jenifer Locke, Elizabeth Opila, Daniel B. Miracle |
| On-Site Speaker (Planned) |
Isabella Marino |
| Abstract Scope |
Refractory high entropy alloys (RHEAs) possess favorable material properties, such as high melting points, resistance to corrosion, microstructural stability, and mechanical strength, which makes them a strong candidate for aerospace, automotive, and nuclear applications. To ensure safe high temperature performance, understanding and minimizing the rate of oxygen diffusion in RHEAs is imperative. The inherent high temperature oxidation performance of two RHEA compositions are being investigated, after varying high temperature exposures in a controlled oxygen environment for various time intervals. Additionally, the effects of surrounding each alloy in a high entropy rare earth oxide (HERO) sintered powder sheath provided by the University of Virginia is investigated under identical conditions. Dilatometry is used to compare thermal expansion between the substrates and HERO coatings. Thermogravimetric analysis is used to measure oxidation resistance and SEM and X-ray techniques are used to understand the microstructure. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, |