Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4. (November 2018)

• Record Type: Journal Article
• Authors: Breen, A.J.; Mouton, I.; Lu, W.; Wang, S.; Szczepaniak, A.; Kontis, P.; Stephenson, L.T.; Chang, Y.; da Silva, A.K.; Liebscher, C.H.; Raabe, D.; Britton, T.B.; Herbig, M.; Gault, B.
• Is Part Of: Scripta materialia. Number 156(2018)
• Page Start: 42
• Page End: 46
• Publication Date: 2018-11
• Subjects: Zirconium alloy -- EBSD -- Atom probe tomography -- Aberration-corrected transmission electron microscopy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.06.044
• Languages: English
• ISSNs: 1359-6462

Abstract

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) α-Zr matrix and a face centred cubic (FCC) δ deuteride (ZrD1.5–1.65 ), a HCP ζ phase deuteride (ZrD0.25–0.5 ) has been observed. Furthermore, Sn is rejected from the deuterides and segregates to the deuteride/α-Zr reaction front. Graphical abstract: Unlabelled Image