Form of Nb at an early stage of recovery and recrystallization in austenite of hot-deformed steel

Naoki Maruyama, Ryuji Uemori, Yoshio Terada, Hiroshi Tamehiro

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The distribution and precipitation of Nb atoms at an very early stage of recovery and recrystallization in hot-deformed austenite were investigated by using an atom-probe field-ion microscope (AP-FIM) and a transmission electron microscope (TEM). The results were summarized as follows: 1) Solute Nb in austenite can delay the onset of recovery and recrystallization. 2) Solute Nb has the strongest retarding effect for recovery and recrystallization among the micro alloying elements; i.e., Nb, Ti, V, Mo. This seems to be caused by the strong interaction between Nb atom and vacancy or dislocation. 3) Nb-N substitutional-interstitial atom pairs were also detected in hot-deformed austenite. This may play an important role in the retarding effect of the early stage of recovery and recrystallization by strongly interacting with dislocations.

Original languageEnglish
Pages (from-to)1051-1057
Number of pages7
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume60
Issue number11
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Form of Nb at an early stage of recovery and recrystallization in austenite of hot-deformed steel'. Together they form a unique fingerprint.

  • Cite this