| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
| Presentation Title |
Comparison of Cavity Microstructures from BOR-60, FFTF and Dual-ion Irradiations up to 208 dpa in T91 steel |
| Author(s) |
Valentin Pauly, Stephen A. Taller, Mychailo B. Toloczko, Danny J. Edwards, Alan Schemer-Kohrn, Gary S. Was |
| On-Site Speaker (Planned) |
Valentin Pauly |
| Abstract Scope |
Ferritic-martensitic (FM) steels are candidate materials for fuel cladding and structural components in future Generation IV nuclear reactors with damage levels expected to reach 200 dpa. Prediction of reactor-irradiated microstructures via heavy-ion irradiations is used in an effort to accelerate the qualification of materials and can adjust to potential reactor-to-reactor variations in irradiation conditions. FM T91 heat 30176 was irradiated in the BOR-60 fast reactor between 16 and 99 dpa at temperatures from 384 to 423°C and in the Fast Flux Test Facility (FFTF) between 72 and 208 dpa at 414°C. The same material was irradiated with 9MeV Fe3+ and 3.42MeV He2+ at a damage rate of 7.5 x 10-4 dpa/s. A helium trapping-detrapping model was used to analyze the need for a higher temperature and He injection rate for dual ion irradiations to produce the best match for swelling as discussed in this talk. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Other, |