| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Bcc-Superalloys
|
| Presentation Title |
Design and Deformation of BCC – B2 Refractory Multiprincipal Element Alloys |
| Author(s) |
Carolina Frey, Sebastian Kube, Ben Neumann, Justin Mayer, Patrick McNutt, Irene Beyerlein, Tresa M. Pollock |
| On-Site Speaker (Planned) |
Tresa M. Pollock |
| Abstract Scope |
Refractory multiprincipal element alloys show promise for high temperature structural applications beyond 1200˚C. However, many single phase solid solution refractory MPEs do not retain a high level of strength beyond 1200˚C. The design of MPEs with Ru-containing B2 precipitates that are stable above 1200˚C will be described. Alloys containing RuHf, RuAl and RuTi B2 precipitates display a wide range of microstructures. However, implementing a strategy to control precipitate – matrix misfit via adjustments in the BCC matrix composition results in precipitation of spherical, coherent B2 precipitates in a BCC matrix. Solvus temperatures for the B2 precipitates can be adjusted to maintain stability well above 1300˚C. APB energies and elastic properties of the B2 precipitates are compared to other common B2 compounds. Mechanical properties and deformation mechanisms will be discussed. |
| Proceedings Inclusion? |
Planned: |