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Observations of tem...
Observations of temperature stability of γ-zirconium hydride by high-resolution neutron powder diffraction
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Wang, Zhiyang (author)
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Steuwer, Axel (author)
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Liu, Nanxi (author)
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- Maimaitiyili, Tuerdi (author)
- Malmö högskola,Fakulteten för teknik och samhälle (TS),Medea
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Avdeev, Maxim (author)
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- Blomqvist, Jakob (author)
- Malmö högskola,Fakulteten för teknik och samhälle (TS),Medea
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- Bjerkén, Christina (author)
- Malmö högskola,Fakulteten för teknik och samhälle (TS),Medea
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Curfs, Caroline (author)
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Kimpton, Justin A. (author)
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Daniels, John E. (author)
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(creator_code:org_t)
- Elsevier, 2015
- 2015
- English.
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In: Journal of Alloys and Compounds. - : Elsevier. - 0925-8388 .- 1873-4669. ; :661, s. 55-61
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https://doi.org/10.1...
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Abstract
Subject headings
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- The phase evolution in a zirconium–50 deuterium (Zr–50D, at.%) alloy system during thermal cycling has been investigated using in situ high-resolution neutron powder diffraction. The results showed that the peritectoid reaction α-Zr + δ-ZrD → γ-ZrD previously suggested to occur at high temperatures does not take place in the system. Slow cooling, from high temperatures (≥520 K) to room temperature at a rate of 5 K min–1, promoted the γ-hydride formation rather than fast cooling as reported earlier. In contrast to the observation that the δ-hydride present in the system remained at temperatures up to 740 K, the produced γ phase transformed to δ-hydride in the temperature range of 370 K to 559 K, with the transformation completing at approximately 559 K. It is confirmed that the formation of the γ-hydride was reproducible with slow cooling, and a diffusion-controlled sluggish δ-to γ-hydride transformation is suggested to be responsible for the favorable development of γ-hydride during slow cooling.
Keyword
- Metal hydrides
- Phase transitions
- Neutron diffraction
- Zirconium hydride
- Zirconium
- Nuclear materials
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Wang, Zhiyang
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Steuwer, Axel
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Liu, Nanxi
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Maimaitiyili, Tu ...
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Avdeev, Maxim
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Blomqvist, Jakob
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show more...
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Bjerkén, Christi ...
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Curfs, Caroline
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Kimpton, Justin ...
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Daniels, John E.
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show less...
- Articles in the publication
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Journal of Alloy ...
- By the university
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Malmö University