Residual stress distribution in oxide films formed on Zircaloy-2

T. Sawabe, T. Sonoda, Masahiro Furuya, S. Kitajima, H. Takano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In order to evaluate residual the stress distribution in oxides formed on zirconium alloys, synchrotron X-ray diffraction (XRD) was performed on the oxides formed on Zircaloy-2 after autoclave treatment at a temperature of 360° C in pure water. The use of a micro-beam XRD and a micro-sized cross-sectional sample achieved the detailed local characterization of the oxides. The oxide microstructure was observed by TEM following the micro-beam XRD measurements. The residual compressive stress increased in the vicinity of the oxide/metal interface of the pre-transition oxide. Highly oriented columnar grains of a monoclinic phase were observed in that region. Furthermore, at the interface of the post-first transition oxide, there was only a small increase in the residual compressive stress and the columnar grains had a more random orientation. The volume fraction of the tetragonal phase increased with the residual compressive stress. The results are discussed in terms of the formation and transition of the protective oxide.

Original languageEnglish
Pages (from-to)658-665
Number of pages8
JournalJournal of Nuclear Materials
Volume466
DOIs
Publication statusPublished - 2015 Nov 1
Externally publishedYes

Fingerprint

Zircaloy 2 (trademark)
Oxides
stress distribution
Oxide films
residual stress
oxide films
Stress concentration
Residual stresses
oxides
Compressive stress
X ray diffraction
diffraction
zirconium alloys
autoclaves
x rays
Zirconium alloys
Autoclaves
metal oxides
Synchrotrons
synchrotrons

Keywords

  • Corrosion
  • Micro-beam XRD
  • Residual stress
  • Synchrotron radiation
  • Zircaloy-2
  • Zirconium oxide

ASJC Scopus subject areas

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

Cite this

Residual stress distribution in oxide films formed on Zircaloy-2. / Sawabe, T.; Sonoda, T.; Furuya, Masahiro; Kitajima, S.; Takano, H.

In: Journal of Nuclear Materials, Vol. 466, 01.11.2015, p. 658-665.

Research output: Contribution to journalArticle

Sawabe, T. ; Sonoda, T. ; Furuya, Masahiro ; Kitajima, S. ; Takano, H. / Residual stress distribution in oxide films formed on Zircaloy-2. In: Journal of Nuclear Materials. 2015 ; Vol. 466. pp. 658-665.
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