Atom probe tomography study of alloying element distributions in Zr alloys and their oxides

Yan Dong, Arthur T. Motta, Emmanuelle A. Marquis

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

A detailed study of alloying element distributions in the metal and oxygen rich regions of corroded Zr alloys and of the phases formed ahead of the oxide front was conducted using atom probe tomography (APT). A consistent sequence of sub-oxide phases is observed ahead of the ZrO2 oxide front, consisting of (i) a thin layer of equiatomic ZrO (occasionally slightly over and under stoichiometric) (ii) saturated solid solution Zr(O)sat, and (iii) a slowly decreasing oxygen profile into the metal. The results also show that the distribution of the alloying elements in the metal is more inhomogeneous than previously thought and that in the oxygen-rich phases enhanced segregation is observed, compared to the metal.

Original languageEnglish (US)
Pages (from-to)270-281
Number of pages12
JournalJournal of Nuclear Materials
Volume442
Issue number1-3
DOIs
StatePublished - Oct 16 2013

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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