| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Rapid Simulation of the Irradiated Microstructure in Flux Thimble Tubes to High Dose Using Ion Irradiation
|
| Author(s) |
Miao Song, Kevin Field, Cem Topbasi, Gary S. Was |
| On-Site Speaker (Planned) |
Gary S. Was |
| Abstract Scope |
Flux Thimble Tubes (FTTs) removed from a PWR were subjected to self-ion irradiation to increase dpa to match the 100 dpa peak in the FTT. Ion irradiated microstructures were compared to those created in reactor to determine the extent to which ion irradiation can be used to predict the microstructure evolution in life extension timeframes. FTT samples were taken from regions of the tube with 38 dpa and 74 dpa and irradiated with 8 MeV Ni3+ at 390 and 410°C and a damage rate of ~ 10-3 dpa/s. Ion irradiation of reactor irradiated samples at 410℃ resulted in the same size and number density of nanocavities, loops, and clusters, and RIS at 100 dpa as in the FTT section at the same dose with the exception of Ni-Si-Mn cluster dissolution during ion irradiation. Extension of damage to 160 dpa resulted in precipitation at grain boundaries and grain boundary migration. |
| Proceedings Inclusion? |
Undecided |