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

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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

Fingerprint

Steel
austenite
Austenite
recovery
steels
Recovery
Atoms
atoms
solutes
retarding
Ion microscopes
ion microscopes
Alloying elements
Dislocations (crystals)
alloying
Vacancies
interstitials
Electron microscopes
electron microscopes
probes

All Science Journal Classification (ASJC) codes

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

Cite this

Form of Nb at an early stage of recovery and recrystallization in austenite of hot-deformed steel. / Maruyama, Naoki; Uemori, Ryuji; Terada, Yoshio; Tamehiro, Hiroshi.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 60, No. 11, 01.01.1996, p. 1051-1057.

Research output: Contribution to journalArticle

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