| 行波磁场对定向凝固Pb-Sn合金枝晶生长的影响 |
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| 引用本文： | 闵志先,沈军,王灵水,刘林.行波磁场对定向凝固Pb-Sn合金枝晶生长的影响[J].中国有色金属学会会刊,2011,21(9):1976-1980. |
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| 作者姓名： | 闵志先 沈军 王灵水 刘林 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室; |
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| 基金项目： | Project(50827102)supported by the National Natural Science Foundation of China; Project(2010CB631202)supported by the National Basic Research Program of China; Project(28-TP-2009)supported by Research Fund of State Key Laboratory of Solidification Processing(NWPU),China |
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| 摘 要： | 在1g的重力加速度条件下,研究熔体对流对向上生长的定向凝固Pb-33%Sn合金枝晶生长行为的影响。熔体对流由行波磁场进行调制。当行波磁场方向由向上转变为向下时,一次枝晶间距逐渐增大,一次枝晶间距的分布更加紧凑,且峰值趋于降低。分析表明：行波磁场对熔体对流的调制作用与改变重力加速度的效果类似,当抽拉速率为50μm/s,行波磁场强度为1mT时,在向上和向下的行波磁场作用下有效重力加速度分别为3.07g和0.22g。
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| 关 键 词： | 定向凝固 微观组织 Pb-Sn合金 行波磁场 |
| 收稿时间： | 28 September 2010 |
Effect of traveling magnetic field on dendrite growth of Pb-Sn alloy during directional solidification |
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| MIN Zhi-xian,SHEN Jun,WANG Ling-shui,LIU Lin State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an ,China.Effect of traveling magnetic field on dendrite growth of Pb-Sn alloy during directional solidification[J].Transactions of Nonferrous Metals Society of China,2011,21(9):1976-1980. |
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| Authors: | MIN Zhi-xian SHEN Jun WANG Ling-shui LIU Lin State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an China |
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| Affiliation: | MIN Zhi-xian,SHEN Jun,WANG Ling-shui,LIU Lin State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China |
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| Abstract: | The influence of melt convection on dendrite growth during the upward-directional solidification of Pb-33%Sn binary alloys was investigated.The melt convection was modulated by traveling magnetic field.When the direction of traveling magnetic field was changed from upward to downward,the primary dendrite spacing gradually increased,and the distribution peak of the primary dendrite spacing shifted to the field of narrower spacing.These result from the different intensities of melt convection,which are contro... |
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| Keywords: | directional solidification microstructure Pb-Sn alloy traveling magnetic field |
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