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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
energy
Synchrotron diffraction study of dissolution and precipitation kinetics of hydrides in Zircaloy-4
Journal of Nuclear Materials, Volume 420, No. 1-3, Year 2012
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Description
This paper presents observations of in situ heating and cooling cycles using synchrotron X-ray diffraction carried out on Zircaloy-4 plates charged to different levels of hydrogen content. The diffraction peak intensities were used to derive the weight fraction of hydrogen in solid solution and the solvi curves upon dissolution and precipitation. The heating and cooling rate did not seem to have a major influence on the solvi. Fast-cooling/dwell experiments showed that the precipitation kinetics are very fast. Finally the evolutions of the lattice strains from individual grain families were studied during dissolution and precipitation. The aim was to understand the role of interphase misfit stresses on the mechanisms of hydride formation and hysteresis between dissolution and precipitation. The results emphasise that changes in dissolved H concentration are responsible for a non-negligible part of the lattice distortion in the matrix, and that the diffraction strains must therefore be analysed with care. © 2011 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Zanellato, Olivier
France, Fontenay-aux-roses
Irsn Institut de Radioprotection et de Sureté Nucléaire
France, Villeurbanne
Matériaux : Ingénierie et Science
Preuss, Michael
United Kingdom, Manchester
The University of Manchester
Buffiére, Jean Yves
France, Villeurbanne
Matériaux : Ingénierie et Science
Ribeiro, Fabienne
France, Fontenay-aux-roses
Irsn Institut de Radioprotection et de Sureté Nucléaire
Steuwer, Axel
Sweden, Lund
European Spallation Source Eric
South Africa, Gqeberha
Nelson Mandela University
Desquines, J.
France, Fontenay-aux-roses
Irsn Institut de Radioprotection et de Sureté Nucléaire
Andrieux, Jérôme
France, Grenoble
European Synchrotron Radiation Facility
Krebs, B.
France, Fontenay-aux-roses
Irsn Institut de Radioprotection et de Sureté Nucléaire
Statistics
Citations: 102
Authors: 8
Affiliations: 6
Identifiers
Doi:
10.1016/j.jnucmat.2011.11.009
ISSN:
00223115