journal article·2015-07Open access

Structural deformation of metallic uranium surrounding hydride growth sites

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

Corrosion Science· Volume 96

Abstract

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 × 10 4 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.
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Research context

OpenAlex topics: Nuclear Materials and Properties · Fusion materials and technologies · Radioactive element chemistry and processing

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