| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Synergistic Irradiation, Corrosion, and Microstructural Evolution in Nuclear Materials
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| Presentation Title |
Investigation of Hydrogen Trapping by Irradiation-induced Defects in 316L Stainless Steel |
| Author(s) |
Frantz Martin, Anne-Cécile Bach, S. Perrin, F. Jomard, Cecilie Duhamel, Jerome Crepin |
| On-Site Speaker (Planned) |
Frantz Martin |
| Abstract Scope |
In-core stainless steel components of nuclear power plants undergo both corrosion and neutron bombardment: the first provides a continuous hydrogen flux into the material while the latter induces structural damages creating point and/or extended defects. Structural integrity assessment must consider these interactions between hydrogen and such defects.
316L stainless steel was irradiated with two Fe-ion beams chosen to create irradiation defects close those encountered in neutron-irradiated 316L SS in terms of density and size. Dislocations loops and nanocavities densities, sizes and distributions were characterized by TEM. The specimens were then cathodically charged in deuterium and analyzed by SIMS. It highlighted that radiation-defects can trap deuterium, mainly at nanocavities. It was also shown that deuterium remained trapped even during heavy primary water exposure. The results will be discussed in terms of trapping/detrapping kinetic constants considering the internal hydrogen pressure of nanocavities and the dissociation energy. |
| Proceedings Inclusion? |
Planned: |