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Article Dans Une Revue Journal of Nuclear Materials Année : 2016

Influence of hydrogen on the oxygen solubility in Zircaloy-4

Résumé

Despite the influence of hydrogen on the behavior of zirconium fuel cladding in many nuclear safety issues, the pseudo-binary Zircaloy-4 – oxygen phase diagram still lacks of data, especially above 1000 °C. The aim of this study was to provide experimental data to better assess the influence of hydrogen on the oxygen solubility in Zircaloy-4. Homogenized two-phase Zircaloy-4 samples were elaborated from 300 to 1000 wppm pre-hydrided samples. Local distributions were characterized thoroughly using Electron Probe Micro-Analysis (EPMA) for oxygen and Elastic Recoil Detection Analysis (ERDA) for hydrogen. The data obtained in this work were included in the pseudo-binary Zircaloy-4 – oxygen phase diagram and have shown that hydrogen has limited influence on the α + β → β transus. Regarding the α → α + β transus, no influence of hydrogen concentration in the α phase below 400 wppm was evidenced.
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Dates et versions

irsn-04594820 , version 1 (30-05-2024)

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Séverine Guilbert-Banti, Pauline Lacote, Gaëlle Taraud, Pascal Berger, Jean Desquines, et al.. Influence of hydrogen on the oxygen solubility in Zircaloy-4. Journal of Nuclear Materials, 2016, 469, pp.228-236. ⟨10.1016/j.jnucmat.2015.11.019⟩. ⟨irsn-04594820⟩
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