About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Radiation Effects in Metals and Ceramics
|
Presentation Title |
Microstructural Investigation of Flux Effect on Neutron-irradiated RPV Steels |
Author(s) |
Auriane Etienne, Andreas Ulbricht, Bertrand Radiguet |
On-Site Speaker (Planned) |
Auriane Etienne |
Abstract Scope |
The extension of the lifetime of pressurized water reactors up to 60 years or more requires to anticipate the evolution of the microstructure at the origin of irradiation hardening and embrittlement. A way to reach high neutron fluences corresponding to these durations is the use of material test reactors, with high neutron flux. In this case, it is important to understand the effect of neutron flux on microstructural evolution.
In this work, two reactor pressure vessel base metals (low Cu, low Mn, medium Ni) and two welds (low Cu, medium Mn, high Ni) were neutron irradiated at the same fluence but under low and high fluxes. Irradiated microstructures were investigated by atom probe tomography.
The flux effect on solute clustering and segregation will be discussed |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |