Characterization of creep deformation mechanism and evaluation of dislocation mobility of modified 9Cr-1Mo steel by stress change test

Hiroyuki Hayakawa, Daisuke Terada, Fuyuki Yoshida, Hideharu Nakashima, Yasufumi Gotou

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In order to characterize the creep deformation mechanism of a Modified 9Cr-1Mo Steel, stress change tests were conducted during creep test. It was confirmed that the dislocation behavior during the creep test was in a viscous manner, since instant plastic strains were not observed at stress change tests. Also we obtained the mobility of dislocation by comparing the observed backward creep behavior after a stress reduction with the analysis which was based on the idea that the backward behavior was caused with the back-motion of bow-out dislocations in a viscous manner. The analyzed dislocation mobility was in good agreement with the theoretical one.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume67
Issue number1
DOIs
Publication statusPublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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