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Austenite Grain Growth in Peritectic Solidified Carbon Steels Analyzed by Phase-Field Simulation
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 www.springerlink.com |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/49354 |
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)
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Submitter: 大野 宗一
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