Effects of MA environment on the mechanical and microstructural properties of ODS ferritic steels

Noriyuki Y. Iwata, Tong Liu, Peng Dou, Ryuta Kasada, Akihiko Kimura, Takanari Okuda, Masaki Inoue, Fujio Abe, Shigeharu Ukai, Somei Ohnuki, Toshiharu Fujisawa

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The mechanical and microstructural properties of ODS ferritic steels mechanically alloyed (MA) in different atmospheres were investigated. Milling in the presence of nitrogen gas significantly reduced the particle size of the Fe-15.5Cr-2W-4Al-1Zr-0.35Y2O3 powder. After solidification of the MA powder, no bubble formation was found in the matrix of the steel mechanically alloyed in hydrogen atmosphere. A slight deterioration in the impact properties was attributed to the formation of large Zr(C,N) precipitates, as observed both in grains and on grain boundaries by TEM.

Original languageEnglish
Pages (from-to)162-165
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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