Mechanical behavior of as-fabricated Zircaloy-4 claddings under the simulated thermo-mechanical post-DNB conditions of a Reactivity Initiated Accident (RIA) - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Mechanical behavior of as-fabricated Zircaloy-4 claddings under the simulated thermo-mechanical post-DNB conditions of a Reactivity Initiated Accident (RIA)

Résumé

The present work aims at characterizing the thermal-mechanical behavior of as-fabricated Stress Relieved Annealed (SRA) Zircaloy-4 claddings under simulated loading conditions of a Reactivity Initiated Accident (RIA), just after Departure from Nucleate Boiling (DNB). An experimental device was setup in order to simulate post-DNB conditions on fuel rods samples. Ballooning creep tests were performed in inert environment (argon) at internal pressure ranging from 1 to 50 bar. A thermal loading was applied by induction heating. First, the sample was heated at 1000°C/s. The temperature was then stabilized at the test set point until the burst of the specimen. Typical investigated temperatures ranged from 800°C to 1100°C in the two-phase domain. Thermal and 3D-kinematics fields were recorded during the whole experiment using high-speed cameras. The present paper shows the results of two tests highlighting a strong impact of the thermal transient.
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Dates et versions

hal-01863256 , version 1 (28-08-2018)

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  • HAL Id : hal-01863256 , version 1

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Thomas Jailin, Nicolas Tardif, Jean Desquines, Michel Coret, Marie-Christine Baietto, et al.. Mechanical behavior of as-fabricated Zircaloy-4 claddings under the simulated thermo-mechanical post-DNB conditions of a Reactivity Initiated Accident (RIA). Top Fuel 2018, Sep 2018, Prague, Czech Republic. ⟨hal-01863256⟩
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