Numerical Modeling of Deflected Columnar Dendritic Grains Solidified in a Flowing Melt and Its Experimental Verification.
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- Lee S. Y.
- Center for Computer-Aided Materials Processing (CAMP), Department of Metallurgical Engineering, Yonsei University
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- Lee S. M.
- Center for Noncrystalline Materials, Department of Metallurgical Engineering, Yonsei University
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- Hong C. P.
- Center for Computer-Aided Materials Processing (CAMP), Department of Metallurgical Engineering, Yonsei University
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A two-dimensional, coupled, cellular automaton-continuum model was developed to model the evolution of solidification grain structures and the deflection behavior of the columnar dendritic grains solidified in a flowing melt. Al-Cu alloys were solidified on an inclined Cu chill in order to investigate the deflection behavior of columnar grains. The growth velocity of a dendrite was determined by the KGT (Kurz-Giovanola-Trivedi) model based on the calculated temperature and solute profiles around a dendrite tip during solidification. The deflection behavior of the growing grains in a flowing melt was studied by the macroscopic observation of the solidified shell on the inclined Cu chill plate, and the interpretation of this phenomenon was made with the aid of numerical calculation, including Cu solute redistribution and velocity vector profile around dendrite tips during solidification, with various solidification parameters. Effects of flow velocity and solute content on the deflection angle of the columnar grains were investigated through experiments, and the results were compared with the numerical simulations.
収録刊行物
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- ISIJ International
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ISIJ International 40 (1), 48-57, 2000
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390282681430009472
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- NII論文ID
- 10004550526
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- NII書誌ID
- AA10680712
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- COI
- 1:CAS:528:DC%2BD3cXhsFKqtL0%3D
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- ISSN
- 13475460
- 09151559
- http://id.crossref.org/issn/00211583
- http://id.crossref.org/issn/09151559
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可