About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing for Energy Applications V
|
Presentation Title |
Compositionally Graded Transition from Tungsten to Ferritic-Martensitic Steels via Directed Energy Deposition |
Author(s) |
Deniz Ebeperi, Adam Bebak, Raiyan Seede, Austin Whitt, Ibrahim Karaman, Raymundo Arroyave, Alaa Elwany |
On-Site Speaker (Planned) |
Deniz Ebeperi |
Abstract Scope |
W-armored, reduced activation ferritic-martensitic steel structured plasma facing components (PFCs) are reliable and cost-effective candidates for fusion power plant divertors. Directed energy deposition (DED) enables the fabrication of functionally graded materials based on chemical composition, microstructure, and texture, thanks to its ability to deposit multiple alloys simultaneously.
In this study, we demonstrated the capability of DED for fabricating fusion-relevant materials with no porosity and cracking, maintaining the structural integrity. We developed a framework for optimizing the processing conditions of each alloy, generated processability maps and fabricated a dense, multilayered, linear compositional gradient from W to GR91 steel, using V-based and Fe-based alloys as transition elements. Challenges for joining alloys with different thermomechanical properties were discussed and solutions were proposed. Effect of processing parameters on part quality was investigated. Microstructural characterization and mechanical testing at elevated temperatures were conducted. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Nuclear Materials, Composites |