About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
Presentation Title |
Comparison of High-dose Microstructure Evolution in Ferritic-martensitic Steels Across Reactor Environments |
Author(s) |
Stephen Taller, Arthur Motta, Kevin Field, Gary Was |
On-Site Speaker (Planned) |
Stephen Taller |
Abstract Scope |
Many of the advanced fission reactors currently proposed call for significant increases in dose to the materials for the nuclear fuel cladding, on the levels of 100-200 dpa. Ferritic-martensitic (FM) steels serve as a candidate alloy class for advanced reactor cladding alloy development. This presentation will compare cavity microstructures and swelling from two FM steels HT9, and NF616 (grade 92) irradiated in the BOR-60 fast reactor up to 87 dpa at temperatures from 380°C to 440°C with comparison to the exact same heats irradiated in FFTF for HT9 and ATR for NF616. This provides the first high dose (>50 dpa) neutron irradiated microstructure results for the ferritic-martensitic steel HT9 heat 84425 since the FFTF and EBR-II irradiations ceased more than two decades ago. Discussion will focus on the differences in microstructure internal to the BOR-60 campaign and with the historical literature for nominally similar dpa levels and irradiation temperature windows. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Environmental Effects, Nuclear Materials |