In-situ observation of intragranular ferrite nucleation at oxide particles

Toshihiro Hanamura, Hiroyuki Shibata, Yoshio Waseda, Hiroshi Nakajima, Shiro Torizuka, Toshihiko Takanashi, Kotobu Nagai

研究成果: ジャーナルへの寄稿学術論文査読

28 被引用数 (Scopus)

抄録

`In-situ' real time observation of the ferrite nucleation at nonmetallic inclusions has been successfully made at elevated temperatures with a confocal scanning laser microscope. The nucleation site, nucleation temperature, and/morphological change of the precipitates and ferrite can be sequentially determined as the phenomena occurring on the surface of steel. A polygonal ferrite starts to precipitate at an oxide particle at 1 010 K and a Widmanstatten ferrite starts to precipitate at a MnS particle at 967 K. The degree of super cooling for austenite-ferrite transformation is found to be in good agreement with the prediction by a thermodynamic calculation.

本文言語英語
ページ(範囲)1188-1193
ページ数6
ジャーナルISIJ International
39
11
DOI
出版ステータス出版済み - 1999

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