| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Meeting Materials Challenges for the Future of Fusion Energy
|
| Presentation Title |
Laser Additive Manufacturing of PFCs for Nuclear Fusion: Studying the Influence of Tungsten Deposition on RAFM Steel Using Multimodal Synchrotron Imaging |
| Author(s) |
Natan Garrivier, Malgorzata Makowska, Manuel Pouchon, Steven Van Petegem, Markus Strobl |
| On-Site Speaker (Planned) |
Natan Garrivier |
| Abstract Scope |
In future nuclear fusion reactors design, laser metallic additive manufacturing (AM) is seriously considered for the production of core Plasma Facing Components (PFCs). Tungsten is now the leading candidate among proposed Plasma-Facing Materials (PFMs), which role is to shield the structural Reduced-Activation Ferritic-Martensitic (RAFM) steel components of the reactor. Multi-material specimens of tungsten on ferritic-martensitic (FM) steel substrates were 3D-printed using LPBF and DED. Formation of unexpected periodical structures of residual metastable austenite was observed in the steel. The influence of pure tungsten deposition on the microstructure at the materials interface, and the influence on the bonding quality of tungsten to FM steel was also studied. 2D-mapping using synchrotron X-Ray-Diffraction in transmission (tXRD) proved to be the only characterization technique able to identify these periodical residual micro-structures inside the bulk material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Nuclear Materials |