| Additional force field in cooling process of cellular Al alloy |
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| 引用本文： | 郑明军,何德坪,戴戈. Additional force field in cooling process of cellular Al alloy[J]. 中国科学B辑(英文版), 2002, 45(6): 598-607. DOI: 10.1007/BF03182531 |
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| 作者姓名： | 郑明军 何德坪 戴戈 |
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| 作者单位： | ZHENG Mingjun HE Deping & DAI GeDepartment of Materials Science and Engineering，Southeast University，Nanjing 210096，China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China(Grant Nos.50231010,50081002 and 19982001). |
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| 摘 要： | The foaming process of Al alloy is similar to that of Al, but there is a solid-liquid state zone in the solidification process of cellular Al alloy which does not exist in the case of Al. In the unidirectional solidification of cellular Al alloy, the proportion of the solid phase gradually reduces from the solid front to the liquid front. This will introduce a force and result in a serious quick shrinkage. By the mathematic and physical mode, the solidification of the cellular Al alloy is studied. The data measured by experiment are close to the result calculated by the mode. This kind of shrinkage can be solved by suitable cooling method in appropriate growth stage. The compressive strength of the cellular Al alloy made by this way is 40% higher than that of cellular Al.
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| 收稿时间： | 2009-04-17 |
Additional force field in cooling process of cellular Al alloy |
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| ZHENG Mingjun HE Deping , DAI Ge. Additional force field in cooling process of cellular Al alloy[J]. Science in China(Chemistry), 2002, 45(6): 598-607. DOI: 10.1007/BF03182531 |
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| Authors: | ZHENG Mingjun HE Deping & DAI Ge |
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| Affiliation: | Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | The foaming process of Al alloy is similar to that of Al, but there is a solid-liquid state zone in the solidification process of cellular Al alloy which does not exist in the case of Al. In the unidirectional solidification of cellular Al alloy, the proportion of the solid phase gradually reduces from the solid front to the liquid front. This will introduce a force and result in a serious quick shrinkage. By the mathematic and physical mode, the solidification of the cellular Al alloy is studied. The data measured by experiment are close to the result calculated by the mode. This kind of shrinkage can be solved by suitable cooling method in appropriate growth stage. The compressive strength of the cellular Al alloy made by this way is 40% higher than that of cellular Al. |
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| Keywords: | cellular Al alloy unidirectional solidification two-phase zone additional force field. |
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