| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
Effect of Geometric Features on Liquid Metal Dealloying of Additively Manufactured Niobium-Titanium |
| Author(s) |
Catherine Barrie, Kourtney Porsch, Michael Brupbacher, Kevin Hemker |
| On-Site Speaker (Planned) |
Catherine Barrie |
| Abstract Scope |
Liquid metal dealloying (LMD) has emerged as a low-cost method of producing highly porous refractory metals within a matter of seconds. As we use additive manufacturing (AM) to create more complex structures, such as lattices, it is important to understand how the internal AM microstructure and external part geometry affect this surface treatment. A niobium-titanium alloy, amenable to LMD, was printed via laser powder bed fusion (L-PBF) in varying geometries. The geometries were designed to probe specifically for the effects of curvature, concavity, and thermal mass. The parts were subsequentially dealloyed in molten copper for a fixed time before being characterized to evaluate the dealloying thickness, ligament size, and ligament shape. These results provide important insights into optimizing AM part designs to achieve the desired porosity or surface area that is tailored to the specific application or use case. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Surface Modification and Coatings, High-Temperature Materials |