Influences of Flow Intensity, Cooling Rate and Nucleation Density at Ingot Surface on Deflective Growth of Dendrites for Al-based Alloy
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概要
- 論文の詳細を見る
The dendrite tip growth kinetics in the flow field and the decentred quadrilateral growth algorithm for describing the evolution of grain growth are combined in Cellular Automaton model to predict the deflective growth of dendrites inclined toward upstream direction. The influences of flow intensity, cooling rate (or solidification rate), nucleation density at ingot surface on the deflective growth of dendrites are discussed. The increase of flow intensity dominantly forces the dendrites to grow in upstream direction; on the contrary, the increases of nucleation density at ingot surface and cooling rate suppress slightly this deflective growth. The relations predicted among deflection angle, flow intensity and solidification rate for Al–Si alloy and Al–Cu alloy show the same tendency as that in Okano et al.s empirical expression deduced from experiments on steel. The deflection angle predicted for Al–Cu alloy fits well with previous experimental results.
- 社団法人 日本鉄鋼協会の論文
- 2009-07-15
著者
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He Jicheng
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern Univ
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He Jicheng
Key Laboratory (northeasten University) Ministry Of Education
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NAKAJIMA Keiji
Division of Applied Process Metallurgy, KTH
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Nakajima Keiji
Div. Of Applied Process Metallurgy Dep. Of Materials Sci. And Engineering Royal Inst. Of Technol. (k
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Nakajima Keiji
Corporate Research & Development Laboratories Sumitomo Metals Industries Ltd.
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He Jicheng
Northeastern University Shenyang
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ZHANG Hongwei
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern Unive
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XING Wei
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern Unive
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WANG Aili
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern Unive
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Zhang Hongwei
Key Laboratory Of Electromagnetic Processing Of Materials Ministry Of Education Northeastern Univers
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Xing Wei
Key Laboratory Of Electromagnetic Processing Of Materials Ministry Of Education Northeastern Univers
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Wang Aili
Key Laboratory Of Electromagnetic Processing Of Materials Ministry Of Education Northeastern Univers
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Nakajima Keiji
Division Of Applied Process Metallurgy Department Of Materials Science And Engineering Royal Institu
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Zhang Hongwei
Key Lab. Of Electromagnetic Processing Of Materials Ministry Of Education Northeastern Univ.
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