About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
A Convergent Approach to Fabricating 316L Stainless Steel (SS316L) Component for Nuclear Applications Using Additive Manufacturing (AM) and Hot Isostatic Pressing (HIP) |
| Author(s) |
Pavan Ajjarapu, Matthew deJong, Fred List III, Jason Mayeur, Peeyush Nandwana, Soumya Nag, Thomas Feldhausen, Andrzej Nycz, Mithulan Paramanathan, David Collins, Kevin Hanson, Ryan Dehoff |
| On-Site Speaker (Planned) |
Pavan Ajjarapu |
| Abstract Scope |
Nuclear industry is exploring advanced manufacturing techniques such as additive manufacturing (AM), powder metallurgy (PM), and Hot Isostatic Pressing (HIP) to produce large-scale near net-shaped components. While there are existing ASTM standards and ASME code-cases that guide reactor pressure vessel (RPV) component fabrication via PM-HIP, complex large-scale geometries for extreme environments can be fabricated via AM. This work demonstrates the feasibility of a combined AM + PM approach which benefits from the intrinsic advantages of both AM and PM-HIP. A hybrid combination of AM and 5-axis CNC technology was used to create a T-valve shell, which was later filled with SS316L powder and HIPed. Post-HIP specimen was inspected for porosity, shrinkage, microstructure, and mechanical properties. Microstructure and properties in the AM-shell, PM-core as well as the AM-PM interface were studied to understand the process-structure-property relationships. This study offers valuable insights on fabrication of complex, large-scale RPV components via convergent manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Nuclear Materials |