Low cycle fatigue behaviour of β treated zirconium:: Partial irreversibility of twinning and consequences for damage

被引：21

作者：

Crépin, J ^{[1
]}

Bretheau, T ^{[1
]}

Caldemaison, D ^{[1
]}

Ferrer, F ^{[1
]}

机构：

[1] Ecole Polytech, CNRS, UMR 7649, Mecan Solides Lab, F-91128 Palaiseau, France

来源：

ACTA MATERIALIA | 2000年 / 48卷 / 02期

关键词：

low cycle fatigue; scanning electron microscopy (SEM); alloys (zirconium); mechanical properties (fatigue); microstructure;

D O I：

10.1016/S1359-6454(99)00358-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

lThe aim of this study is to understand the low cycle fatigue behaviour of beta treated zirconium. It focuses especially on the contribution of twinning mechanisms. In situ fatigue tests performed inside a scanning electron microscope allow the observation of the activation of twins and their partial reversibility, depending on the applied stress. Moreover, the acoustic signature (shape factor) of the different twinning systems has been characterized allowing the following of inception and evolution of twins during the fatigue tests. Finally, the consequence of such a partial irreversibility on damage and crack localization is shown. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：505 / 516

页数：12

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