| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications III
|
| Presentation Title |
Development of tungsten fiber-reinforced tungsten composites for fusion application |
| Author(s) |
Yiran Mao, Jan W Coenen, Johann Riesch, Xiaoyue Tan, Rudolf Neu, Christoph Broeckmann, Juan Du, Wolfgang Pantleon, Yucheng Wu, Bernhard Unterberg, Christian Linsmeier |
| On-Site Speaker (Planned) |
Yiran Mao |
| Abstract Scope |
For use as plasma-facing material in future fusion reactors, tungsten is the prime candidate due to its favorable properties. However, tungsten's intrinsic brittleness limits its application, especially under neutron irradiation. To address this, tungsten fiber-reinforced tungsten composites (Wf/W) have been developed. These composites exhibit "pseudo-ductility" and improved fracture toughness by leveraging energy consumption during crack propagation. These built-in mechanisms work even with brittle matrix and fibers, as long as the interface between the fiber and the matrix exists. This is especially meaningful against neutron embrittlement. Powder metallurgy (PM) processes are one of the most important routes to produce this material. This work focuses on PM-prepared Wf/W. Three types of Wf/W have been developed: short fiber Wf/W, porous matrix Wf/W, and continuous fiber Wf/W, each with distinct advantages and disadvantages. The manufacturing processes, mechanical and thermal physical properties, and other fusion-related characteristics will be detailed for of all three Wf/W types. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Nuclear Materials, |