Effect of rotating magnetic field on the solidification microstructures of Pb-Sn alloys

查看全文 作　　者：MENG Xiaohua CHEN Changle HONG Zhenyu WANG [1]Jianyuan

机构地区：[1]Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, China Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, China Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, China Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072, China

出　　处：《Science China(Technological Sciences)》索引2006年第49卷第3期,共9页

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.50331040 and 60171034). 摘　　要：The influence of the rotating magnetic field (RMF) on the solidification proc- ess 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 elimi- nate the gravity induced macrosegregation, and result in dendrite fragmentation and promote solute diffusion velocity. These differences are regarded as the effect of compli- cated 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 concentra- tion and temperature field uniformity caused by RMF. 关键词：ROTATING magnetic field, macrosegregation, DENDRITE fragmentation, MELT flow.

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Effect of rotating magnetic field on the solidification microstructures of Pb-Sn alloys

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