TY - JOUR
T1 - In-situ observation of intragranular ferrite nucleation at oxide particles
AU - Hanamura, Toshihiro
AU - Shibata, Hiroyuki
AU - Waseda, Yoshio
AU - Nakajima, Hiroshi
AU - Torizuka, Shiro
AU - Takanashi, Toshihiko
AU - Nagai, Kotobu
PY - 1999
Y1 - 1999
N2 - `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.
AB - `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.
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U2 - 10.2355/isijinternational.39.1188
DO - 10.2355/isijinternational.39.1188
M3 - Article
AN - SCOPUS:0033353946
SN - 0915-1559
VL - 39
SP - 1188
EP - 1193
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
IS - 11
ER -