Embrittlement of pre-hydrided Zircaloy-4 by steam oxidation under simulated LOCA transients

被引：21

作者：

Desquines, J. ^{[1
]}

Drouan, D. ^{[1
]}

Guilbert, S. ^{[1
]}

Lacote, P. ^{[1
]}

机构：

[1] French Inst Radioprotect & Surete Nucl, IRSN Bat 325, F-13115 St Paul Les Durance, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2016年 / 469卷

关键词：

Zircaloy-4; LOCA; Embrittlement; LEFM; Fracture toughness; PRECIPITATION KINETICS; BEHAVIOR; HYDROGEN;

D O I：

10.1016/j.jnucmat.2015.11.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

During a Loss Of Coolant Accident (LOCA), the mechanical behavior of high temperature steam oxidized fuel rods is an important issue. In this study, as-received and pre-hydrided axial tensile samples were steam oxidized in a vertical furnace and water quenched in order to simulate a LOCA transient. The samples were then subjected to a mechanical test to determine the failure conditions. Two different rupture modes were evidenced; the first one associated to linear elastic fracture mechanics and the second one is associated to sample failure without applied load. The oxidized cladding fracture toughness was determined relying on intensive metallographic analysis. The sample failure conditions were then back predicted confirming that the main rupture parameters are well captured. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：20 / 31

页数：12

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