| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
In situ ion irradiation creep testing of austenitic and ferritic-martensitic steels |
| Author(s) |
Charles A. Hirst, Mackenzie Warwick, Wyatt Peterson, Kevin Field |
| On-Site Speaker (Planned) |
Charles A. Hirst |
| Abstract Scope |
Advanced nuclear reactors will require steels to withstand simultaneous high temperatures, mechanical loading, and irradiation. These factors combine to both promote and accelerate creep deformation, which may become a significant degradation mode under these conditions. In order to investigate the mechanisms behind irradiation creep, in situ mechanical loading rigs are being developed at the University of Wisconsin Ion Beam Laboratory (UW-IBL) and Michigan Ion Beam Laboratory (MIBL). These facilities can subject thin metallic samples to temperatures up to 550°C, tensile stresses up to 316 MPa, and doses up to 0.4 displacements per atom (dpa). Preliminary results investigating thermal- and irradiation-creep of austenitic alloys 316L and A709, and ferritic-martensitic alloy Grade 91 will be presented. Post-irradiation microstructural characterization will be discussed with respect to previous literature and will be used to evaluate the active deformation mechanisms. These experiments have the potential to inform the development and deployment of (irradiation) creep-resistant steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Characterization |