| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments II
|
| Presentation Title |
Development and Characterisation of Fe-Al-X-based BCC Ferritic Superalloys for Nuclear and High-Temperature Environments |
| Author(s) |
Sophia Von Tiedemann, Pedro Ferreirós, Kan Ma, Sandy Knowles |
| On-Site Speaker (Planned) |
Sophia Von Tiedemann |
| Abstract Scope |
The advancement of next-generation nuclear fission and fusion power requires materials that can maintain their physical properties and microstructural stability at extreme temperatures and neutron fluxes over prolonged periods of time. A series of Fe-Al-X model alloys have been developed, where X = Ni, V, Ti. Analogous to Ni-based superalloys, the disordered BCC A2-Fe matrix is strengthened by ordered-BCC, semi-/coherent B2/L21 nanoprecipitates. The microstructural evolution including coarsening, changes in precipitate volume fraction, lattice misfit and hardness were investigated using SEM, TEM, synchrotron XRD and micro-/nanoindentation. The high density of precipitate-matrix interfaces are exploited to act as sinks for irradiation-induced point defects. Here we study the irradiation response and evolution of these novel alloys and seek to understand the underpinning mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Nuclear Materials, Iron and Steel |