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Thermo-mechanical behavior of Zircaloy-4 claddings under simulated post-DNB conditions

Abstract : The thermo-mechanical behavior of Zircaloy-4 claddings under simulated post-DNB RIA conditions was investigated. Around twenty experiments were performed in simulated post-DNB conditions, i.e. creep ballooning tests with heating rates greater than 1000°C/s. Two different levels of pressure of 7 and 11 bar were tested for temperatures of interest ranging from 840°C to 1020°C. A complex creep behavior was highlighted in this range of temperature. It appears very well correlated to the phase content present within the material during fast thermal transients. Tests with low thermal transients were also performed and evidence a strong impact of the heating rate on the thermo-mechanical properties of the claddings.
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https://hal.archives-ouvertes.fr/hal-02437246
Contributor : Nicolas TARDIF Connect in order to contact the contributor
Submitted on : Tuesday, July 12, 2022 - 11:23:51 AM
Last modification on : Friday, September 30, 2022 - 9:44:08 AM

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T. Jailin, Nicolas Tardif, J. Desquines, P. Chaudet, Michel Coret, et al.. Thermo-mechanical behavior of Zircaloy-4 claddings under simulated post-DNB conditions. Journal of Nuclear Materials, Elsevier, 2020, pp.151984. ⟨10.1016/j.jnucmat.2020.151984⟩. ⟨hal-02437246v3⟩

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