| Effects of high magnetic field on modification of Al-Si alloy |
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| 引用本文： | 连峰 齐峰 李廷举 胡国兵. Effects of high magnetic field on modification of Al-Si alloy[J]. 中国有色金属学会会刊, 2005, 15(5): 1089-1095 |
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| 作者姓名： | 连峰 齐峰 李廷举 胡国兵 |
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| 作者单位： | [1]Materials Engineering College, Dalian University of Technology, Dalian 116024, China [2]Eleetromeehanies and Materials Engineering College, Dalian Maritime University, Dalian 116026, China |
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| 摘 要： | 1INTRODUCTIONAmong Al-Si alloys,the Al-Si eutectic alloyhas the best foundry capability.The mechanicalproperties of Al-Si eutectic and hypoeutectic alloyhighly relates to the shape,size and distribution ofSi phase in eutectic structure.Coarse acicular-likeeutectic Si dissevers Al matrix badly to inducestress concentration and debase the mechanicalproperties,especially the tenacity.Modification isthe process to change the shape and size of eutecticSi,namely to change the shape of eutec…
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| 关 键 词： | 铝 硅 合金 磁场 物理性能 亚共晶 |
| 文章编号： | 1003-6326（2005）05-1089-07 |
| 收稿时间： | 2004-11-02 |
| 修稿时间： | 2005-04-04 |
Effects of high magnetic field on modification of Al-Si alloy |
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| LIAN Feng,QI Feng,LI Ting-ju,HU Guo-bing. Effects of high magnetic field on modification of Al-Si alloy[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(5): 1089-1095 |
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| Authors: | LIAN Feng QI Feng LI Ting-ju HU Guo-bing |
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| Abstract: | Effects of high magnetic field on modification of Al-6 %Si hypoeutectic alloy, Ak-12.6%Si eutectic alloy and Al-18 % Si hypereutectic alloy were studied. For the Al-6 % Si alloy, it is found that the sample modified by Na salt does not lose efficacy after remelting under high magnetic field. For the Al-12.6%Si alloy, if the sample modi fied by Na-salt is kept at the temperature of modification reaction, high magnetic field can postpone the effective time of the modification. For Al-18%Si alloy modified by P-salt, the primary Si in solidified structure concentrates at the edge of the sample and eutectic Si appears in the center of the sample under the condition without high magnetic field, while the primary Si distributes evenly in the sample when the high magnetic field is imposed. It is thought that the high magnetic field restrains the convection of the melt. |
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| Keywords: | high magnetic field Al-Si alloy modification |
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