In-situ Digital Image Correlation for Fracture Analysis of Oxides Formed on Zirconium Alloys

Philip Platt; David Lunt; Efthymios Polatidis; M. R.  Wenman; Michael Preuss

doi:10.1016/j.corsci.2016.05.026

In-situ Digital Image Correlation for Fracture Analysis of Oxides Formed on Zirconium Alloys

Philip Platt, David Lunt, Efthymios Polatidis, M. R. Wenman, Michael Preuss

Imperial College London

Research output: Contribution to journal › Article › peer-review

Abstract

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 ZIRLOTM. 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 ~1.6 GPa.

Original language	English
Pages (from-to)	344-351
Number of pages	8
Journal	Corrosion Science
Volume	111
Early online date	17 May 2016
DOIs	https://doi.org/10.1016/j.corsci.2016.05.026
Publication status	Published - Oct 2016

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10.1016/j.corsci.2016.05.026

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title = "In-situ Digital Image Correlation for Fracture Analysis of Oxides Formed on Zirconium Alloys",

abstract = "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 ZIRLOTM. 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 \textasciitilde{}1.6 GPa.",

author = "Philip Platt and David Lunt and Efthymios Polatidis and Wenman, \{M. R.\} and Michael Preuss",

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language = "English",

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T1 - In-situ Digital Image Correlation for Fracture Analysis of Oxides Formed on Zirconium Alloys

AU - Platt, Philip

AU - Lunt, David

AU - Polatidis, Efthymios

AU - Wenman, M. R.

AU - Preuss, Michael

PY - 2016/10

Y1 - 2016/10

N2 - 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 ZIRLOTM. 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 ~1.6 GPa.

AB - 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 ZIRLOTM. 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 ~1.6 GPa.

UR - https://www.scopus.com/pages/publications/84969980458

U2 - 10.1016/j.corsci.2016.05.026

DO - 10.1016/j.corsci.2016.05.026

M3 - Article

SN - 0010-938X

VL - 111

SP - 344

EP - 351

JO - Corrosion Science

JF - Corrosion Science

ER -

In-situ Digital Image Correlation for Fracture Analysis of Oxides Formed on Zirconium Alloys

Abstract

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