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Title: Synchrotron X-ray diffraction study of zirconium hydride distribution in Zr-2.5%Nb and its redistribution during thermal cycling

Abstract

Highlights: • Differently oriented grains were studied in situ using synchrotron diffraction. • The effect of thermo-mechanical history on hydrogen location in α-Zr is considered. • Hydrogen redistribution in alpha-Zr matrix during thermal cycling discussed. - Abstract: Hydride distribution in a dual-phase hydrided Zr-2.5wt%Nb has been studied. Samples having different prior thermo-mechanical processing history were thermally cycled within a 86 keV X-ray photon beam. The diffraction patterns generated with this technique allow the evaluation of the relative quantity of hydrides within differently oriented grain sets. It was found that hydrides exist primarily within two different α-Zr grain-sets. One grain-set has its {0002} α-Zr direction oriented very close to the hoop direction while the other exists within a plane approximately 20° away from it. During thermal cycling, the proportion or hydrides oriented within different grain sets was shown to change from the distribution associated with the prior thermomechanical processing, to that corresponding to the current thermal cycling conditions. It was also shown that the ability for hydrogen to redistribute in the matrix correlates with the cooling rate of the specimen.

Authors:
 [1];  [2]
  1. Kinetrics, 800 Kipling ave., Etobicoke, Ontario, M8Z 5G5 (Canada)
  2. MME, Queen's University, 60 Union st., Kingston, Ontario, K7L 2N8 (Canada)
Publication Date:
OSTI Identifier:
22804886
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 136; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DISTRIBUTION; NIOBIUM ADDITIONS; THERMAL CYCLING; X-RAY DIFFRACTION; ZIRCONIUM ALLOYS; ZIRCONIUM HYDRIDES

Citation Formats

Shiman, Oksana V., E-mail: 14os4@queensu.ca, Tulk, Eric, and Daymond, Mark R. Synchrotron X-ray diffraction study of zirconium hydride distribution in Zr-2.5%Nb and its redistribution during thermal cycling. United States: N. p., 2018. Web. doi:10.1016/J.MATCHAR.2017.12.012.
Shiman, Oksana V., E-mail: 14os4@queensu.ca, Tulk, Eric, & Daymond, Mark R. Synchrotron X-ray diffraction study of zirconium hydride distribution in Zr-2.5%Nb and its redistribution during thermal cycling. United States. https://doi.org/10.1016/J.MATCHAR.2017.12.012
Shiman, Oksana V., E-mail: 14os4@queensu.ca, Tulk, Eric, and Daymond, Mark R. Thu . "Synchrotron X-ray diffraction study of zirconium hydride distribution in Zr-2.5%Nb and its redistribution during thermal cycling". United States. https://doi.org/10.1016/J.MATCHAR.2017.12.012.
@article{osti_22804886,
title = {Synchrotron X-ray diffraction study of zirconium hydride distribution in Zr-2.5%Nb and its redistribution during thermal cycling},
author = {Shiman, Oksana V., E-mail: 14os4@queensu.ca and Tulk, Eric and Daymond, Mark R.},
abstractNote = {Highlights: • Differently oriented grains were studied in situ using synchrotron diffraction. • The effect of thermo-mechanical history on hydrogen location in α-Zr is considered. • Hydrogen redistribution in alpha-Zr matrix during thermal cycling discussed. - Abstract: Hydride distribution in a dual-phase hydrided Zr-2.5wt%Nb has been studied. Samples having different prior thermo-mechanical processing history were thermally cycled within a 86 keV X-ray photon beam. The diffraction patterns generated with this technique allow the evaluation of the relative quantity of hydrides within differently oriented grain sets. It was found that hydrides exist primarily within two different α-Zr grain-sets. One grain-set has its {0002} α-Zr direction oriented very close to the hoop direction while the other exists within a plane approximately 20° away from it. During thermal cycling, the proportion or hydrides oriented within different grain sets was shown to change from the distribution associated with the prior thermomechanical processing, to that corresponding to the current thermal cycling conditions. It was also shown that the ability for hydrogen to redistribute in the matrix correlates with the cooling rate of the specimen.},
doi = {10.1016/J.MATCHAR.2017.12.012},
url = {https://www.osti.gov/biblio/22804886}, journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 136,
place = {United States},
year = {2018},
month = {2}
}