About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Temperature-Dependent Plasticity in Additively Manufactured Tungsten: Implications for Fusion Reactor Wall Materials |
| Author(s) |
Noah Holtham, Patxi Fernandez-Zelaia, Saket Thapliyal, Pablo Luna Falcon, Katie Estrada, Riley Mayes, Christopher Ledford, Michael Kirka |
| On-Site Speaker (Planned) |
Noah Holtham |
| Abstract Scope |
Additively manufactured (AM) tungsten is a promising material for first-wall armor in fusion reactors due to its ability to accommodate complex thermal transport geometries. However, the unique microstructures resulting from AM processes significantly influence its thermomechanical behavior. In this study, we investigate the deformation mechanisms of electron beam melted tungsten subjected to uniaxial tensile loading at elevated temperatures of 800 °C and 1200 °C. Electron microscopy of fractured specimens revealed pronounced grain rotation and the formation of deformation bands when the loading axis was parallel to the build direction. In contrast, loading perpendicular to the build direction activated markedly fewer plastic deformation mechanisms. These findings provide critical insights into the anisotropic plasticity of AM tungsten and lay the groundwork for the design of crack-resistant components tailored for the extreme conditions of fusion energy systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Solidification |