Dispersion hardening mechanism of Y2O3 dispersed ferritic steel at high temperature

Akinori Yoshizawa, Takeshi Fujita, Fuyuki Yoshida, Hideharu Nakashima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The threshold stress for high temperature deformation of Oxide Dispersion Strengthened (ODS) Ferritic Steel was measured by stress abruptly loading (SAL) test at 923K and was compared with the Orowan and void-hardening stresses calculated from dispersion parameters. It was found that the threshold stress obtained by SAL test decreased from the Orowan stress to the void-hardening stress as the time elapsed under load. Therefore, it is concluded that the originating mechanism of the threshold stress comes from the Srolovitz mechanism in this steel. From these results, the origin of strength anisotropy of ODS Ferritic Steel are discussed.

Original languageEnglish
Pages (from-to)67-71
Number of pages5
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume82
Issue number10
Publication statusPublished - Dec 1 1996

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Dispersion hardening
Ferritic steel
hardening
steels
Temperature
Oxides
thresholds
Hardening
voids
oxides
Steel
Loads (forces)
Anisotropy
anisotropy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Dispersion hardening mechanism of Y2O3 dispersed ferritic steel at high temperature. / Yoshizawa, Akinori; Fujita, Takeshi; Yoshida, Fuyuki; Nakashima, Hideharu.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 82, No. 10, 01.12.1996, p. 67-71.

Research output: Contribution to journalArticle

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