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

JOURNAL OF NUCLEAR MATERIALS

卷:531

Article

Jailin, T.^1,2  Tardif, N.²  Desquines, J.¹  Chaudet, P.²  Coret, M.³  Baietto, M-C²  Georgenthum, V¹ 

[1] IRSN, PSN Res, Cadarache, St Paul Lez Dur, France

[2] Univ Lyon, LaMCoS, CNRS UMR5259, INSA Lyon, F-69621 Lyon, France

[3] Ecole Cent Nantes, GeM UMR 6183, Nantes, France

关键词: Fast thermal transients;    Full-field measurements;    Creep Zircaloy-4;    RIA;   

DOI  :  10.1016/j.jnucmat.2020.151984

来源: Elsevier

【 摘 要 】

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 degrees C/s. Two different levels of pressure of 7 and 11 bar were tested for temperatures of interest ranging from 840 degrees C to 1020 degrees 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. (C) 2020 Elsevier B.V. All rights reserved.

【 授权许可】

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