About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Progress on the Fabrication and Characterization of Novel Low-Activation Tungsten Heavy Alloys for Nuclear Fusion Applications |
| Author(s) |
James V. V. Haag Iv, Mohan Nartu, Krishna Pitike, Wahyu Setyawan |
| On-Site Speaker (Planned) |
James V. V. Haag Iv |
| Abstract Scope |
Nuclear fusion reactors require the employment of innovative materials capable of withstanding thermal and irradiation extremes. Pacific Northwest National Laboratory is actively pursuing the production of novel low-activation tungsten heavy alloys for service as plasma facing materials in nuclear fusion reactors for these purposes. Prior experimental campaigns have focused on the performance and radiation tolerance of W-Ni-Fe alloys, but despite this alloy’s exemplary performance, concerns exist in the activation of the Ni-based ductile phase. To address this concern, we are producing various Ti and Cr-based ductile phase toughened tungsten heavy alloys meant to serve as a crack arrest layer under a pure W armor to increase component fracture toughness and service lifetime. This work will discuss the selected compositions as well as their fabrication, mechanical performance, and detailed microstructural characterization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Environmental Effects |