| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Accessing High Damage Level Microstructures Using Combined Ion and Neutron Irradiation of a 304L Stainless Steel |
| Author(s) |
Zhijie Jiao, Samara Levine, Miao Song, Chad Parish, Gary Was |
| On-Site Speaker (Planned) |
Zhijie Jiao |
| Abstract Scope |
Feasibility of extending the neutron irradiated microstructure to high damage level using ion irradiation was investigated on 304L SS. The alloy was previously irradiated in the BOR-60 reactor to 5.5 dpa at 320°C and was subsequently irradiated with a 9 MeV Ni3+ ion beam at 10-3dpa/s to a dose of 47.5 dpa at 380, 400 and 420°C. The irradiated microstructures were compared against those from the neutron irradiated sample at the same dose. Combined irradiation produced a better match of radiation-induced segregation (RIS) profiles compared to the ion-only irradiations. The MIK model revealed that the high sink densities established at 5.5 dpa mitigated dose rate sensitivity of RIS at the grain boundary. While all combined irradiation temperatures failed to reproduce Cu-rich precipitates, combined irradiation at 400°C produced a better overall match of Ni/Si-rich precipitates and RIS observed in neutron irradiated sample. |
| Proceedings Inclusion? |
Undecided |