Please use this identifier to cite or link to this item:
|Title:||Observations of temperature stability of γ-zirconium hydride by high-resolution neutron powder diffraction|
|Citation:||Wang, Z., Steuwer, A., Liu, N., Maimaitiyili, T., Avdeev, M., Blomqvist, J., Bjerkén, C., Curfs, C., Kimpton, J. A., & Daniels, J. E. (2016). Observations of temperature stability of γ-zirconium hydride by high-resolution neutron powder diffraction. Journal of Alloys and Compounds, 661, 55-61, doi:10.1016/j.jallcom.2015.11.187|
|Abstract:||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–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. © 2015 Elsevier B.V.|
|Appears in Collections:||Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.