Characterization of high temperature creep properties in recrystallized 12cr-ods ferritic steel claddings

Shigeharu Ukai, Takanari Okuda, Masayuki Fujiwara, Toshimi Kobayashi, Syunji Mizuta, Hideharu Nakashima

Research output: Contribution to journalArticlepeer-review

163 Citations (Scopus)

Abstract

The high temperature strengthening mechanism of previously manufactured 12Cr-ODS ferritic steel claddings was clarified. In the recrystallized 12Cr-2W-0.3Ti-0.24Y2O3-ODS ferritic steel cladding, αY2TiO5 type complex oxide formation was responsible for the drastic reduction of oxide particle size and the resulting shortened distance between particles, which led to superior internal creep rupture strength at 973 K because of the high resistance to gliding dislocation. Internal creep deformation was considered to be controlled by the grain boundary sliding associated with grain morphology: the near Σ11, Σ and Σ19 coincidence boundaries with a (110) common axis.

Original languageEnglish
Pages (from-to)872-879
Number of pages8
Journaljournal of nuclear science and technology
Volume39
Issue number8
DOIs
Publication statusPublished - Aug 2002

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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