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Effects of Ti Addition on Austenite Grain Growth during Reheating of As-Cast 0.2 mass% Carbon Steel

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Title: Effects of Ti Addition on Austenite Grain Growth during Reheating of As-Cast 0.2 mass% Carbon Steel
Authors: Ohno, Munekazu Browse this author →KAKEN DB
Murakami, Chihiro Browse this author
Matsuura, Kiyotaka Browse this author →KAKEN DB
Isobe, Kohichi Browse this author
Keywords: austenite grain structure
pinning effect
reverse transformation
grain growth
Issue Date: Oct-2012
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 52
Issue: 10
Start Page: 1832
End Page: 1840
Publisher DOI: 10.2355/isijinternational.52.1832
Abstract: Effects of Ti addition on grain growth in reversely-transformed austenite structure during reheating of the as-cast 0.2 mass% C steel have been investigated for a Ti concentration range between 0 and 0.2 mass% and heating rates from 0.014 to 2.5°C/s. The austenite grain growth during reheating is retarded by the Ti addition and such an effect becomes stronger with the addition of higher amount of Ti. This retarding effect is ascribable to the pinning effect of fine Ti(C,N) particles which should precipitate from the as-cast structure during the reheating process. The experimental results on the grain growth behavior are well explained by the grain growth model including the Zener force and counting reduction of the pinning effect due to the existence of the coarse Ti(C,N) particles crystallized during the solidification.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大野 宗一

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