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 - http://www.scopus.com/inward/record.url?scp=84929513310&partnerID=8YFLogxK
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 -