| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Resilience of PM-HIP Steels in Extreme Irradiation Environments |
| Author(s) |
Janelle P. Wharry, Arya Chatterjee, Soumita Mondal, Saquib Bin Habib, Grayson Nemets, Elliot H Marrero Jackson, Jasmyne Emerson, Maria A Okuniewski, Yu Lu, Yaqiao Wu, Donna P Guillen, Benjamin Sutton, David W Gandy |
| On-Site Speaker (Planned) |
Janelle P. Wharry |
| Abstract Scope |
This talk will highlight unique irradiation responses of steels manufactured by powder metallurgy with hot isostatic pressing (PM-HIP). Austenitic and ferritic stainless steels are structural alloys for current and future nuclear reactors. The industry has growing interest in replacing steel castings and forgings with PM-HIP components, but the irradiation performance of PM-HIP steels must first be understood. Here we will present several unusual characteristics of irradiated PM-HIP steels attributed to their synthesis. In low-alloy ferritic steels, residual precipitation from PM-HIP processing can compromise the as-fabricated ductility. But on the other hand, precipitate-matrix interfaces are strong sinks for irradiation-induced defects, which may limit irradiation hardening and embrittlement. In higher-alloyed ferritic steels, accelerated pipe diffusion of Si along dislocation lines creates unexpected irradiation-induced softening. Finally, in PM-HIP austenitic 316L stainless steel, irradiation induces pseudoelastic tendencies. Collectively, these results reveal exceptional resilience of PM-HIP steels to extreme irradiation environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Nuclear Materials, Powder Materials |