| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Mechanical Performance of Laser Powder Bed Fusion 316H Stainless Steel Following Low-Dose Neutron Irradiation |
| Author(s) |
Caleb Massey |
| On-Site Speaker (Planned) |
Caleb Massey |
| Abstract Scope |
The Advanced Materials and Manufacturing Technologies (AMMT) is developing a rapid framework for qualifying laser powder bed fusion (LPBF) 316H stainless steel in nuclear environments, which includes multiple neutron irradiation campaigns aimed at identifying the effect of varied processing parameters on irradiation-induced degradation. In this work, the post-irradiation mechanical performance of two representative microstructures of LPBF 316H is evaluated. Both variants were printed on a Concept Laser M2 system at Oak Ridge National Laboratory, with slight differences in porosity, grain morphology, and grain size. Tensile and fracture toughness specimens were neutron irradiated to ~2 displacements per atom at target irradiation temperatures of 400C and 600C to cover relevant operating temperature ranges for 316H in advanced reactor conditions. Differences in pre- and post-irradiation tensile anisotropy and fracture toughness are discussed as a function of processing parameters and post-build heat treatments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Additive Manufacturing, Nuclear Materials |