| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Fabrication of Nanostructured Alumina Forming Austenitic Alloys via Conventional and Advanced Manufacturing Approaches |
| Author(s) |
Caleb Massey, Tim Graening, Holden Hyer, David Hoelzer, Yukinori Yamamoto |
| On-Site Speaker (Planned) |
Caleb Massey |
| Abstract Scope |
Part of the Innovative Nuclear Materials (INM) program’s mission is to develop next-generation fuel cladding and in-core materials that require fuel and coolant compatibility in the presence of high neutron fluences. As such, Oak Ridge National Laboratory began an initiative to increase the irradiation resistance of conventional alumina-forming austenitic alloys expected to be deployed in nuclear reactors. In this work, conventional mechanical alloying and extrusion are compared with advanced manufacturing methods to force in-situ precipitation in oxidative/nitriding atmospheres and produce nanostructured alumina-forming austenitic (NAFA) alloys. The added precipitates, if produced in high enough number densities, aim to provide the necessary sink-strength to mitigate deleterious cavity swelling and high-temperature helium embrittlement phenomena expected for this class of austenitic alloys under fast reactor-relevant operating temperatures and doses. The microstructures and mechanical properties of each NAFA alloy are compared, with a specific focus on precipitation differences via conventional and advanced manufacturing approaches. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Characterization |