書誌事項
- タイトル別名
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- Three-dimensional Numerical Simulation of Channel Segregation in Directionally Solidified Sn-20 mass% Bi Ingot
- シコウセイ ギョウコ サセタ Sn-20mass%Bi ゴウキン インゴット チュウ チャンネルヘンセキ ノ 3ジゲン スウチ カイセキ
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Channel segregation behavior of a lateral directional Sn-20mass%Bi ingots was examined by X-ray computing tomography (X-ray CT) and three-dimensional numerical analysis. The channel segregation with string shape from near the cold wall side was observed by the X-ray CT and those segregation patterns could be reproduced by the numerical analysis. Low concentration regions also appeared above the channel segregation in both X-ray CT images and numerical analysis results. These results suggest that the proposed numerical method is a reasonable model to simulate the channel segregation. Detailed investigation of the effects of convection on the generation of channel segregation showed that a solidification-accelerated region (SA-region) and solidification-retarded region (SR-region) were formed by the fluid flow. At the SA-region, solidification was accelerated by the inflow of lower Bi concentrated liquid. On the other hand, in the SR-region, solidification was retarded by the inflow of the liquid with high Bi concentration from the SA-region. It was found that the SA-region (called donor part) and SR-region (called acceptor part) group into pairs, and generate the channel segregation.
収録刊行物
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- 鉄と鋼
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鉄と鋼 99 (2), 135-140, 2013
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
- 1390282680103564928
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- NII論文ID
- 130003372502
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- NII書誌ID
- AN10528571
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- ISSN
- 1341688X
- 18832954
- 00211575
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- COI
- 1:CAS:528:DC%2BC3sXit1ertLw%3D
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- NDL書誌ID
- 024257643
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可