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タイトル: 凝固過程のミクロ偏析による溶質濃度分布の定量的理解
その他のタイトル: Quantitative Understanding of Solute Concentration Distribution by Microsegregation During Solidification
著者: 川西, 咲子  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-3719-3788 (unconfirmed)
寺島, 慎吾  KAKEN_name
塚原, 優希  KAKEN_name
助永, 壮平  KAKEN_name
江阪, 久雄  KAKEN_name
柴田, 浩幸  KAKEN_name
著者名の別形: Kawanishi, Sakiko
Terashima, Shingo
Tsukahara, Yuki
Sukenaga, Sohei
Esaka, Hisao
Shibata, Hiroyuki
キーワード: in-situ observation
microsegregation
solutal field
succinonitrile
dendrite growth
fluorescence imaging
発行日: 15-Feb-2025
出版者: 日本鉄鋼協会
誌名: 鉄と鋼
巻: 111
号: 3
開始ページ: 75
終了ページ: 84
抄録: Microsegregation of solute components during the solidification process causes solute pile-up in the liquid phase, which strongly affects the formation behavior of inclusions. However, there is no quantitative evaluation of solute concentration distribution during dendritic growth. In this study, we established an in-situ observation method for quantitative evaluation of solute concentration distribution using model materials with fluorescent reagents to clarify how the solute pile-up progresses due to microsegregation. In addition to evaluating the physical properties of the model materials necessary for this study, a quantitative evaluation of solute concentration distribution during dendritic growth was successfully achieved. Numerical analysis, taking into account the equilibrium partition of solute components and solute diffusion in each phase, reproduced the measured solute concentration distribution in the liquid phase. Thus, the solute concentration distribution was evaluated by the actual measurement and numerical analysis, and it was clarified that a relatively simple model can represent the progress of microsegregation.
著作権等: © 2025 一般社団法人 日本鉄鋼協会
This is an open access article under the terms of the Creative Commons Attribution license.
URI: http://hdl.handle.net/2433/291810
DOI(出版社版): 10.2355/tetsutohagane.tetsu-2024-098
出現コレクション:学術雑誌掲載論文等

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