About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Interstitial–Metal Interactions: The Outsized Role of Small Atoms
|
| Presentation Title |
Controlling Interstitial Impurities to Improve Manufacturability of Refractory Multi-Principal-Element Alloys |
| Author(s) |
Luke Gaydos, Hailong Huang, Zongyang Lyu, Trevor Riedemann, Aileen Cornwall-Brady, Ryan Ott, Prashant Singh, Duane Johnson, Jordan Tiarks, Andrew Kustas |
| On-Site Speaker (Planned) |
Luke Gaydos |
| Abstract Scope |
To enable first-generation fusion-energy reactors, new materials must be developed to contain the plasma formed during fusion. Any plasma-facing material will see temperatures exceeding 1500°C, well beyond the melting point of current superalloys. While refractory metals, including refractory multi-principal-element alloys (RMPEA) show promise for enabling higher operating temperatures, they present a plethora of manufacturing challenges, notably the effects of interstitial impurities (e.g. oxygen, carbon, nitrogen) on ductility and manufacturability. Therefore, we explore routes for managing and extracting these impurities from castings and powders via external gettering with reactive metals and other means. The application of these techniques will be focused on W-rich candidate first-wall materials and other RMPEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, High-Entropy Alloys, High-Temperature Materials |