Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4

A. J. Breen; I. Mouton; W. Lu; S. Wang; A. Szczepaniak; P. Kontis; L. T. Stephenson; Y. Chang; A. K. da Silva; C. Liebscher; D. Raabe; T. B. Britton; M. Herbig; B. Gault

Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4

Materials Science 2018-06-29 v2

Authors: A. J. Breen , I. Mouton , W. Lu , S. Wang , A. Szczepaniak , P. Kontis , L. T. Stephenson , Y. Chang , A. K. da Silva , C. Liebscher , D. Raabe , T. B. Britton , M. Herbig , B. Gault

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Abstract

Zircaloy-4 (Zr-1.5%Sn-0.2%Fe-0.1%Cr wt. %) was electrochemically charged with deuterium to create deuterides and subsequently analysed with atom probe tomography and scanning transmission electron microscopy to understand zirconium hydride formation and embrittlement. At the interface between the hexagonal close packed (HCP) \alpha-Zr matrix and a face centred cubic (FCC) \delta deuteride (ZrD1.5-1.65), a HCP \zeta phase deuteride (ZrD0.25-0.5) has been observed. Furthermore, Sn is rejected from the deuterides and segregates to the deuteride/\alpha-Zr reaction front.

Keywords

zircaloy-4 deuteride grain boundary atom probe tomography scanning transmission electron microscopy zirconium hydride

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@article{arxiv.1806.10286,
  title  = {Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4},
  author = {A. J. Breen and I. Mouton and W. Lu and S. Wang and A. Szczepaniak and P. Kontis and L. T. Stephenson and Y. Chang and A. K. da Silva and C. Liebscher and D. Raabe and T. B. Britton and M. Herbig and B. Gault},
  journal= {arXiv preprint arXiv:1806.10286},
  year   = {2018}
}

Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4

Abstract

Keywords

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