Characterization of the oxide particles in Al-added high-Cr ODS ferritic steels

C. H. Zhang, A. Kimura, R. Kasada, J. Jang, H. Kishimoto, Y. T. Yang

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

In the present work, microstructures of dispersoids in two Al-added high-Cr ODS ferritic steels (including the commercial MA956, and another ODS steel with a similar composition recently developed in Kyoto University) were studied. The study with transmission electron microscopy (TEM) of both the thin-foil specimens and the extraction replica specimens showed that the nano-sized oxides in the two ODS steels consist mainly of a complex Y-Al-O compound (YAlO 3) in a perovskite structure (i.e. YAP), while other oxide particles with different chemical composition or crystalline structures are in significantly lower number density. The comparison between the two kinds of ODS steels shows that the size distribution and the number density of the oxide particles significantly depends on the conditions of fabrication. Mechanisms underlying the processes were discussed.

Original languageEnglish
Pages (from-to)221-224
Number of pages4
JournalJournal of Nuclear Materials
Volume417
Issue number1-3
DOIs
Publication statusPublished - 2011 Oct 1
Externally publishedYes

ASJC Scopus subject areas

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

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