| Investigation on stability of directionally solidified CBr4-C2Cl6 lamellar eutectic by using multiphase field simulation |
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| 作者姓名： | 朱耀产 王锦程 杨根仓 赵达文 |
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| 作者单位： | State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China |
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| 基金项目： | Project supported by
the National Natural Science Foundation of China (Grant No~50271057). |
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| 摘 要： | With the multiphase field method, the stability of lamellar basic state is investigated during the directional solidification of eutectic alloy CBr4-C2Cl6. A great number of lamellar patterns observed in experiments are simulated, and a stability diagram for lamellar pattern selections is presented. The simulated growth behaviours of these patterns are found to be qualitatively consistent with Karma et al＇s numerical calculations and experimental results. The formation of the primary instability is attributed to the destabilization of solute boundary layer.
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| 关 键 词： | CBr4-C2Cl6 薄层状共晶合金 定向凝固 稳定图 多相场模拟 形态不稳定性 |
| 收稿时间： | 1/6/2006 12:00:00 AM |
| 修稿时间： | 2006-01-062006-12-19 |
Investigation on stability of directionally solidified CBr4--C2Cl6 lamellar eutectic by using multiphase field simulation |
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| Zhu Yao-Chan,Wang Jin-Cheng,Yang Gen-Cang and Zhao Da-Wen.Investigation on stability of directionally solidified CBr4-C2Cl6 lamellar eutectic by using multiphase field simulation[J].Chinese Physics B,2007,16(3):805-811. |
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| Authors: | Zhu Yao-Chan Wang Jin-Cheng Yang Gen-Cang and Zhao Da-Wen |
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| Institution: | State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | With the multiphase field method, the stability of lamellar basic
state is investigated during the directional solidification of
eutectic alloy CBr4--C2Cl6. A great number of lamellar
patterns observed in experiments are simulated, and a stability
diagram for lamellar pattern selections is presented. The simulated
growth behaviours of these patterns are found to be qualitatively
consistent with Karma \textit{et al}'s numerical calculations and
experimental results. The formation of the primary instability is
attributed to the destabilization of solute boundary layer. |
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| Keywords: | multiphase field directional solidification morphological instability stability diagram |
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