About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Electron beam wire direct energy deposition (DED-EB/w) additive manufacturing of Tungsten |
| Author(s) |
Siyu Xu, Tom Pinto, Vitalijs Jefimovs, Colin Ribton, Yuze Huang |
| On-Site Speaker (Planned) |
Siyu Xu |
| Abstract Scope |
Electron beam wire direct energy deposition (DED-EB/w) additive manufacturing presents a promising approach for fabricating tungsten components, particularly for extreme environments such as fusion reactors. However, tungsten’s high melting point and low ductility pose significant challenges, including microcrack formation during deposition. This study explores single-track and multi-layer tungsten builds produced by DED-EB/w, aiming to identify stable processing conditions and mitigate defect formation. A series of trials were conducted to evaluate the effects of beam current, scanning speed, and wire feed rate on melt pool stability and inter-layer bonding. Thermal history was monitored in situ using surface-mounted thermocouples, providing insight into temperature gradients and cooling rates. Metallurgical characterisation was carried out to assess the influence of thermal behaviour on defect evolution. The results contribute to a better understanding of thermal control strategies in tungsten EBAM and support future development of robust process windows for refractory metal additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Characterization |