About this Abstract |
| Meeting |
2025 AWS Professional Program
|
| Symposium
|
2025 AWS Professional Program
|
| Presentation Title |
Fabrication of Compositionally Graded Transition Joints between Hastelloy N and 316L SS by LDED Additive Manufacturing |
| Author(s) |
Jacque Berkson, Robert Schraft, Antonio J. Ramirez |
| On-Site Speaker (Planned) |
Jacque Berkson |
| Abstract Scope |
As the design and fabrication of Molten Salt Reactors (MSR) continue to advance, associated materials selection and qualification is a critical milestone. The need for a joint between Hastelloy N and 316L has been identified, however traditional welding and joining techniques have been deemed infeasible for this dissimilar joint. In response, this work utilizes blown powder laser directed energy deposition (LDED-BP) to fabricate compositionally graded components which may then be joined to each Hastelloy N and 316L on either end. Ideal compositional paths are identified through CALPHAD techniques, and process-control related challenges are discussed and addressed. As a result, dense parts have been produced containing multiple compositional gradients. Preliminary metallographic analysis is also discussed, evaluating and comparing each of the compositional paths as well as a laser-welded joint between wrought plates. |
| Proceedings Inclusion? |
Undecided |