Evolution of grain boundaries and subboundaries in stainless steel during dynamic recrystallization

A. Belyakov, K. Tsuzaki, H. Miura, T. Sakai

研究成果: Contribution to journalConference article査読

3 被引用数 (Scopus)

抄録

The dynamic recrystallization (DRX) microstructures were studied in a 304-type stainless steel deformed at temperatures from 1023 K to 1223 K and at a strain rate of about 10-3 s-1. Both the dynamic grain size and the dynamic subgrain size were shown to depend on deformation conditions, and they could be expressed by different power-law functions of flow stresses. The subgrain size was related to the flow stress with a size exponent of about -1.0, while the grain size exponent was about -0.7. With increasing the deformation temperature, the fraction of the high-angle grain boundaries against all the strain-induced (sub)boundaries decreased from about 70% at 1023 K to 40% at 1223 K. The deformation microstructures are discussed in some detail with reference to the mechanisms of microstructure evolution that operated upon DRX.

本文言語英語
ページ(範囲)1005-1010
ページ数6
ジャーナルMaterials Science Forum
426-432
2
DOI
出版ステータス出版済み - 1 1 2003
イベントThermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, スペイン
継続期間: 7 7 20037 11 2003

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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