Effect of rotating magnetic field on the solidification microstructures of Pb-Sn alloys
Effect of rotating magnetic field on the solidification microstructures of Pb-Sn alloys
复制标题
旋转磁场对Pb-Sn合金凝固组织的影响
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Chen Changle Hong Zhenyu amp Wang Jianyuan Meng Xiaohua
中科院分区：
文献类型：
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作者：
Meng Xiaohua;Chen Chang;Hong Zhenyu Wang Jianyuan;Chen Changle Hong Zhenyu amp Wang Jianyuan Meng Xiaohua
通过比较普通条件和RMF条件下的凝固组织，研究了旋转磁场（RMF）对Pb-Sn二元合金凝固过程的影响。结果发现，RMF可以完全消除重力引起的宏观偏析，导致枝晶破碎并促进溶质扩散速度。这些差异被认为是RMF引起的复杂熔体流动的影响。此外，当初生相含量较小时，在RMF条件下会形成许多球形显微组织。分析表明，这些特殊的微观结构很可能是RMF引起的熔体流动、浓度和温度场均匀性的共同作用。
The influence of the rotating magnetic field (RMF) on the solidification process of Pb-Sn binary alloys is studied by comparing the solidification microstructures under the common condition and RMF condition. It is found that the RMF can completely eliminate the gravity induced macrosegregation, and result in dendrite fragmentation and promote solute diffusion velocity. These differences are regarded as the effect of complicated melt flow caused by RMF. Moreover, when the content of the primary phase is small, many spherical microstructures form under the RMF condition. The analyses indicate that these special microstructures are likely the conjunction action of melt flow and concentration and temperature field uniformity caused by RMF.