Journal ArticleDOI
Microstructure and hydrides in the near rolled-joint regions of ex-service CANDU pressure tube
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In this article, the microstructures near the rolled-joint regions from an ex-service CANDU pressure tube were investigated, and the results showed that irradiation-induced effects on the microstructure are more significant than the temperature influence near the inlet rolled joint region (that operates at lower temperatures).About:
This article is published in Journal of Nuclear Materials.The article was published on 2020-10-01. It has received 7 citations till now. The article focuses on the topics: Zirconium alloy & Zirconium.read more
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Journal ArticleDOI
Identifying the true structure and origin of the water-quench induced hydride phase in Zr-2.5Nb alloy
Fei Long,Yu Luo,Nima N. Badr,Oksana Shiman,Matthew Topping,S. Y. Persaud,Zhongwen Yao,Laurent Karim Béland,Mark R. Daymond +8 more
TL;DR: In this article, the crystal structure of the hydride induced by water quenching in hydrided Zr-2.5Nb pressure tube was identified by a combined approach of synchrotron x-ray diffraction and TEM nano-beam electron diffraction, coupled with density functional theory.
Journal ArticleDOI
Towards resolving a long existing phase stability controversy in the Zr-H, Ti-H systems
TL;DR: In this paper, the phase stability of γ-hydride in high purity Zr and commercial purity Ti was investigated using ex-situ synchrotron x-ray diffraction.
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Transformation behavior of hydrides precipitated with or without stress in Zr-2.5Nb investigated by in-situ S/TEM thermal cycling
TL;DR: In this article, it was shown that hydrides preferred to form in grains with (0002) pole aligned in/or close to the TD (transverse direction)-RD (radial direction) plane when external hoop tensile stress was applied and the applied stress showed a profound impact on where hydride precipitated within the available population of differently oriented Zr grains.
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Deuterium concentration profiles at the rolled joints of CANDU fuel channels
G. A. McRae,CE Coleman +1 more
TL;DR: In this paper , a diffusion model is proposed to explain high concentrations of hydrogen isotopes seen in some rolled joints of CANDU reactors, which is consistent with gettering of hydrogen from the 403 stainless steel end-fittings by the pressure tubes.
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Effect of metallurgical variables on hydride precipitation behavior in Zr-2.5Nb micro pressure tubes
TL;DR: In this article , the effect of manufacturing routes (heat treatment done by a conventional β-quenching (BQ), or slow cooling (SC) prior to hot extrusion), and location along the tube (front end (FE) and back end (BE) emerging from the press) on hydride precipitation behavior in Zr-2.5Nb micro pressure tubes were evaluated.
References
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Journal ArticleDOI
A review of microstructure evolution in zirconium alloys during irradiation
TL;DR: In this article, anisotropic interstitial diffusion has been observed in ZrSn and ZrNb alloys at temperatures between about 573 and 873 K, at least for fluences up to 7 × 10 25 n m −2.
Journal ArticleDOI
Line broadening analysis using integral breadth methods: a critical review
TL;DR: Integral breadth methods for line profile analysis, including modifications of the Williamson-Hall method recently proposed for the specific case of dislocation strain broadening, are reviewed in this article, supported by the results of a TEM investigation.
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Terminal solubility and partitioning of hydrogen in the alpha phase of zirconium, zircaloy-2, and zircaloy-4.
TL;DR: In this article, the effects of alloy composition, grain size and cold work on the terminal solubility and thermodynamic activity of hydrogen in the alpha phase of zirconium, Zircaloy-2, and Zircaleroy-4 were determined by a diffusion sample method.
Book
Characterisation of Radiation Damage by Transmission Electron Microscopy
M.L Jenkins,M.A Kirk +1 more
TL;DR: The role of transmission electron microscopy in characterising radiation damage was discussed in this paper, where the Thompson tetrahdron was used to detect radiation damage in amorphous glass.
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