Structural deformation of metallic uranium surrounding hydride growth sites

Christopher P. Jones; Thomas B. Scott; James R. Petherbridge

doi:10.1016/j.corsci.2015.04.008

Structural deformation of metallic uranium surrounding hydride growth sites

Christopher P. Jones^*, Thomas B. Scott, James R. Petherbridge

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

Electron backscatter diffraction (EBSD) was utilised to probe the microstructure of uranium metal in the vicinity of surface corrosion pits, resulting from hydrogen exposure (5×10⁴ Pa, at 240°C). Microstructural analysis of the surface revealed a subtle increase of grain orientation variation for grains at the border of the hydride growths. Cross sectional analysis, at pit sites, revealed significant microstructure deformation in the form of crystal twinning and micro-cracking beneath the surface. These observations provide qualitative evidence that local stress intensities generated as a consequence of hydride growth and confinement, were sufficient to cause deformation within the parent metal.

Original language	English
Pages (from-to)	144-151
Number of pages	8
Journal	Corrosion Science
Volume	96
Early online date	20 Apr 2015
DOIs	https://doi.org/10.1016/j.corsci.2015.04.008
Publication status	Published - 1 Jul 2015

Keywords

B. SEM
C. hydrogen absorption
C. hydrogen permeation
C. pitting corrosion

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This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://dx.doi.org/10.1016/j.corsci.2015.04.008. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 1.66 MBLicence: CC BY-NC-ND

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@article{45dc0dbc3c294652acaa3eb12bd881f4,

title = "Structural deformation of metallic uranium surrounding hydride growth sites",

abstract = "Electron backscatter diffraction (EBSD) was utilised to probe the microstructure of uranium metal in the vicinity of surface corrosion pits, resulting from hydrogen exposure (5×104 Pa, at 240°C). Microstructural analysis of the surface revealed a subtle increase of grain orientation variation for grains at the border of the hydride growths. Cross sectional analysis, at pit sites, revealed significant microstructure deformation in the form of crystal twinning and micro-cracking beneath the surface. These observations provide qualitative evidence that local stress intensities generated as a consequence of hydride growth and confinement, were sufficient to cause deformation within the parent metal.",

keywords = "B. SEM, C. hydrogen absorption, C. hydrogen permeation, C. pitting corrosion",

author = "Jones, \{Christopher P.\} and Scott, \{Thomas B.\} and Petherbridge, \{James R.\}",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.corsci.2015.04.008",

language = "English",

volume = "96",

pages = "144--151",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Structural deformation of metallic uranium surrounding hydride growth sites

AU - Jones, Christopher P.

AU - Scott, Thomas B.

AU - Petherbridge, James R.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Electron backscatter diffraction (EBSD) was utilised to probe the microstructure of uranium metal in the vicinity of surface corrosion pits, resulting from hydrogen exposure (5×104 Pa, at 240°C). Microstructural analysis of the surface revealed a subtle increase of grain orientation variation for grains at the border of the hydride growths. Cross sectional analysis, at pit sites, revealed significant microstructure deformation in the form of crystal twinning and micro-cracking beneath the surface. These observations provide qualitative evidence that local stress intensities generated as a consequence of hydride growth and confinement, were sufficient to cause deformation within the parent metal.

AB - Electron backscatter diffraction (EBSD) was utilised to probe the microstructure of uranium metal in the vicinity of surface corrosion pits, resulting from hydrogen exposure (5×104 Pa, at 240°C). Microstructural analysis of the surface revealed a subtle increase of grain orientation variation for grains at the border of the hydride growths. Cross sectional analysis, at pit sites, revealed significant microstructure deformation in the form of crystal twinning and micro-cracking beneath the surface. These observations provide qualitative evidence that local stress intensities generated as a consequence of hydride growth and confinement, were sufficient to cause deformation within the parent metal.

KW - B. SEM

KW - C. hydrogen absorption

KW - C. hydrogen permeation

KW - C. pitting corrosion

UR - https://www.scopus.com/pages/publications/84929513310

U2 - 10.1016/j.corsci.2015.04.008

DO - 10.1016/j.corsci.2015.04.008

M3 - Article (Academic Journal)

AN - SCOPUS:84929513310

SN - 0010-938X

VL - 96

SP - 144

EP - 151

JO - Corrosion Science

JF - Corrosion Science

ER -

Structural deformation of metallic uranium surrounding hydride growth sites

Abstract

Keywords

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