Dispersion hardening mechanism of Y2O3 dispersed ferritic steel at high temperature

Akinori Yoshizawa, Takeshi Fujita, Fuyuki Yoshida, Hideharu Nakashima

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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
Issue number10
Publication statusPublished - Dec 1 1996

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Dispersion hardening mechanism of Y2O3 dispersed ferritic steel at high temperature'. Together they form a unique fingerprint.

Cite this