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Communication Dans Un Congrès Année : 2018

Multimodal setups for the study of fresh Zircaloy-4 claddings under simulated thermal-mechanical RIA conditions

Résumé

The research aims at characterizing the thermal-mechanical behavior of fresh Zircaloy-4 claddings under simulated Reactivity Initiated Accident (RIA) loading. The loading is characterized by a very high heating rate (>1000!C/s) while the claddings are internally pressurized (10-100 bars). The temperature can exceed the allotropic phase transformation of Zircaloy-4 which occurs in the vicinity of 812!C for a quasistatic loading. A 2-step identification procedure is proposed to understand the effect of thermal-metallurgical couplings during the out of equilibrium phase transformation on the viscoplastic and fracture behavior of the cladding. First, the dilatometry machine GLEEBLE-3500 is used to better understand the thermal kinetic impact on the allotropic phase transformation. Then, the semi-integral test bench ELLIE is used to simulate thermal-mechanical RIA conditions.
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hal-01863226 , version 1 (28-08-2018)

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  • HAL Id : hal-01863226 , version 1

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Thomas Jailin, Nicolas Tardif, Jean Desquines, Michel Coret, Thierry Breville, et al.. Multimodal setups for the study of fresh Zircaloy-4 claddings under simulated thermal-mechanical RIA conditions. PHOTOMECHANICS 2018, Mar 2018, Toulouse, France. ⟨hal-01863226⟩
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