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

SCRIPTA MATERIALIA

卷:156

Article

Breen, A. J.¹  Mouton, I¹  Lu, W.¹  Wang, S.²  Szczepaniak, A.¹  Kontis, P.¹  Stephenson, L. T.¹  Chang, Y.¹  da Silva, A. K.¹  Liebscher, C. H.¹  Raabe, D.¹  Britton, T. B.²  Herbig, M.¹  Gault, B.¹ 

[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[2] Imperial Coll London, Royal Sch Mines, Dept Mat, London SW7 2AZ, England

关键词: Zirconium alloy;    EBSD;    Atom probe tomography;    Aberration-corrected transmission electron microscopy;   

DOI  :  10.1016/j.scriptamat.2018.06.044

来源: Elsevier

【 摘 要 】

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 xi 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. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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