The role of niobium in the retardation of the early stage of austenite recovery in hot-deformed steels

N. Maruyama, R. Uemori, M. Sugiyama

研究成果: Contribution to journalArticle査読

50 被引用数 (Scopus)

抄録

The distribution of Nb at an early stage of austenite recovery in hot-deformed HSLA steels was investigated mainly by APFIM. It was confirmed that the onset of austenite recovery is retarded by the solute atoms of microalloying elements randomly dispersed in the austenite matrix. A simple calculation considering the interaction between solute atoms and defects indicates that the different retardation ability for the onset of austenite recovery of Nb, Ti and V is a result of the difference in impurity diffusion coefficients and in solute-defect interactions. AP analysis of a 0.06 at.% Nb steel revealed that not only single solute atoms but also Nb-N and Nb-C pairs exist at the early stage of recovery. These pairs probably play an important role in the retardation of austenite recovery in hot-deformed steels.

本文言語英語
ページ(範囲)2-7
ページ数6
ジャーナルMaterials Science and Engineering A
250
1
DOI
出版ステータス出版済み - 7 15 1998
外部発表はい

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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