About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Industry
|
| Presentation Title |
Hydrogen Transport Simulations of Complex Multi-Material AM Components for Inventory Reduction in Fusion First Wall |
| Author(s) |
Ian Wojtowicz, Behzad Rankouhi |
| On-Site Speaker (Planned) |
Ian Wojtowicz |
| Abstract Scope |
In many fusion devices, the accumulation of hydrogen isotopes in first-wall components degrades both material and reactor performance. Current solutions explore the use of permeation barriers to reduce hydrogen trapping, but they often suffer from radiation damage and thermal cracking. Instead, we propose controlling hydrogen inventory via geometrically complex, multi-material architectures enabled by laser powder bed fusion (LPBF). This approach leverages the differences in thermal conductivity, permeation, and hydrogen trapping between constituent materials while considering manufacturability constraints. Using the open-source code FESTIM, we model hydrogen concentration by exploring the selective spatial placement of tungsten and V-4Cr-4Ti within a representative first-wall subsection. Fabricated prototypes are experimentally evaluated to assess printability, with future work focusing on their hydrogen transport performance. This work demonstrates how first-wall hydrogen retention can be managed through multi-material AM-driven design, establishing a new paradigm for reducing tritium losses in commercial fusion plants. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, Modeling and Simulation |