About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Physical and Mechanical Properties of FM Steels After 20dpa of Neutron Irradiation |
| Author(s) |
Josina Wilhelmina Geringer, Tim Graening, Hsin Wang, Xiang Chen, Michael Rieth, Carston Bonnekoh, Steve Zinkle |
| On-Site Speaker (Planned) |
Josina Wilhelmina Geringer |
| Abstract Scope |
Fe-Cr ferritic martensitic (FM) steels will be used for in-vessel components such as the first wall or blanket of fusion reactors, but little is known about the irradiated thermophysical performance of these 8-9%Cr steels. A previous study reported that steel varieties such as F82H and EUROFER97, generally perform close or similar to Grade91. Thermal conductivity of unirradiated reduced activated FM steels seems to be higher than those of Grade91, especially at lower temperatures (below 400°C). The electrical resistivity (unirradiated condition) increases with test temperature but reduces after neutron irradiation (~5dpa). This results in an increased induction current in the blanket. EUROFER97 and other steel variants were tested after neutron irradiation up to 20dpa at various irradiation temperatures between 200-500°C. Neutron irradiation was conducted at the High Flux Isotope Reactor at Oak Ridge National Laboratory. Baseline and post-irradiation results from electrical resistivity, thermal diffusivity, microhardness and tensile testing will be reported. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Environmental Effects, Nuclear Materials |