| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments
|
| Presentation Title |
Transitioning from Tungsten to Steels by Laser-Directed Energy Deposition |
| Author(s) |
Deniz Ebeperi, Tim Graening, Ying Yang, Yutai Katoh, Ibrahim Karaman |
| On-Site Speaker (Planned) |
Deniz Ebeperi |
| Abstract Scope |
Tungsten has a wide variety of applications thanks to its capability of withstanding extreme environments, high thermal conductivity, and excellent strength and hardness. However, due to its high melting temperature and low ductility, additive manufacturing of tungsten is supremely challenging. As one of the most promising plasma-facing materials for fusion reactors, utilization of tungsten in additive manufacturing of functionally graded structures became a trending demand for emerging state-of-art energy applications. Compositional pathway designs and determination of transition alloys enable overcoming the lack of compatibility between W and other structural materials, such as reduced activation ferritic/martensitic (RAFM) steels. In this study, a previously validated framework on process parameter optimization and printability map construction was applied to enable successful fabrication of crack-free and high-density W-RAFM compositionally graded structures. Part performance was evaluated by microstructure and mechanical property characterizations, and important findings will be covered. Future challenges and applicability to other materials will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Iron and Steel |