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Austenite Grain Growth in Peritectic Solidified Carbon Steels Analyzed by Phase-Field Simulation

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Title: Austenite Grain Growth in Peritectic Solidified Carbon Steels Analyzed by Phase-Field Simulation
Authors: Ohno, Munekazu Browse this author →KAKEN DB
Tsuchiya, Shingo Browse this author
Matsuura, Kiyotaka Browse this author →KAKEN DB
Issue Date: Jun-2012
Publisher: Springer Boston
Journal Title: Metallurgical and Materials Transactions A
Volume: 43
Issue: 6
Start Page: 2031
End Page: 2042
Publisher DOI: 10.1007/s11661-011-1072-6
Abstract: Formation of coarse columnar grains (CCG) in as-cast austenite structure of peritectic carbon steels is one of the serious problems in continuous casting processes. It was recently elucidated that the formation of CCG is ascribed to a discontinuous grain growth. Furthermore, the critical condition for the discontinuous growth to occur was elicited on the basis of phase field simulations and a theory of grain growth. In this study, by means of the phase field simulations, the detailed investigation is carried out for grain coarsening of as-cast austenite structure. It is demonstrated in the two-dimensional simulations that the coarsest grain structure emerges by the discontinuous growth in the vicinity of the critical condition. In addition, a model for predicting the upper limit of grain size during the discontinuous growth is proposed. The model successfully describes the experimental result with reasonable accuracy.
Rights: The final publication is available at
Type: article (author version)
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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