In-situ digital image correlation for fracture analysis of oxides formed on zirconium alloys

被引：21
|
作者：
Platt, P. [1 ]
Lunt, D. [1 ]
Polatidis, E. [1 ]
Wenman, M. R. [2 ,3 ]
Preuss, M. [1 ]
机构：
[1] Univ Manchester, Sch Mat, Mat Performance Ctr, Manchester M13 9PL, Lancs, England
[2] Imperial Coll London, Ctr Nucl Engn, London SW7 2AZ, England
[3] Imperial Coll London, Dept Mat, London SW7 2AZ, England
来源：
CORROSION SCIENCE | 2016年 / 111卷
基金：
英国工程与自然科学研究理事会;
关键词：
Zirconium; SEM; XRD; Oxidation; Effects of strain; DIC; TRANSMISSION ELECTRON-MICROSCOPY; HIGH-TEMPERATURE OXIDATION; MECHANICAL-PROPERTIES; INTERFACE ROUGHNESS; CORROSION KINETICS; CLADDING ALLOYS; ZR ALLOYS; DEGRADATION; DIFFRACTION; ZIRCALOY-4;
D O I：
10.1016/j.corsci.2016.05.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Repeated breakdown of the protective oxide layer can be a key factor in the oxidation of zirconium alloys. Hence, accurate measurement of the oxide fracture strength is crucial for simulating the oxidation of these alloys. High resolution digital image correlation was applied to SEM images taken during in-situ tensile loading of oxidised ZIRLO (TM). Bi-axial strain measurements obtained during crack formation in the oxide films were converted into stress, and fitted to Weibull distributions to predict the oxide failure strength. Analysis highlights the impact of surface roughness. Samples polished prior to oxidation gave a fracture strength of similar to 1.6 GPa. (C) 2016 Published by Elsevier Ltd.
引用
收藏
页码：344 / 351
页数：8
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