About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Synergistic Irradiation, Corrosion, and Microstructural Evolution in Nuclear Materials
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Presentation Title |
Understanding the Hydrogen Pickup Mechanism of M5Framatome under Ion Irradiation |
Author(s) |
Benoit Queylat, Michael Jublot, Frantz Martin, Francois Jomard, Marc Tupin |
On-Site Speaker (Planned) |
Benoit Queylat |
Abstract Scope |
While Zircaloy-4 alloy shows a high and constant hydrogen pickup fraction (HPUF) over its operating life in Pressurized Water Reactor (PWR), this fraction is lower for M5Framatome alloy and tends to decrease for high burnup. One of the hypotheses to explain such a difference is the positive role of the continuous neutron irradiation during corrosion. The role of irradiation on the HPUF in post transition was simulated with ion irradiation of pre-oxidized M5Framatome samples. Oxidation and hydrogen pick up kinetics were monitored for 50 days during post irradiation corrosion tests in PWR conditions in static autoclave. Isotopic exposure in heavy water combined with Secondary Ion Mass Spectrometry (SIMS) were used to study the impact of irradiation on hydrogen diffusion in the oxide layer. A hydrogen pickup mechanism and a model of the HPUF evolution of M5Framatome claddings have been suggested. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Other, |