Effects of Rotating Magnetic Field and Ce Modification on Solidification Structure of Eutectic Sn-Bi Alloy

Cheng Xiangyan; Chen Changle; Chen Zhi; Dai Fuping

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Effects of Rotating Magnetic Field and Ce Modification on Solidification Structure of Eutectic Sn-Bi Alloy
Issue 4, Pages: 308-310(2007)
Published： 2007 ，
DOI：

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[1]陈翔燕,陈长乐,陈志,代富平.旋转磁场及Ce对Sn-Bi合金凝固组织的影响[J].特种铸造及有色合金,2007(04):308-310+245.

Cheng Xiangyan, Chen Changle, Chen Zhi, et al. Effects of Rotating Magnetic Field and Ce Modification on Solidification Structure of Eutectic Sn-Bi Alloy. [J]. Special Casting & Nonferrous Alloys (4):308-310(2007)
[1]陈翔燕,陈长乐,陈志,代富平.旋转磁场及Ce对Sn-Bi合金凝固组织的影响[J].特种铸造及有色合金,2007(04):308-310+245. DOI：

Cheng Xiangyan, Chen Changle, Chen Zhi, et al. Effects of Rotating Magnetic Field and Ce Modification on Solidification Structure of Eutectic Sn-Bi Alloy. [J]. Special Casting & Nonferrous Alloys (4):308-310(2007) DOI：

摘要

研究了旋转磁场及Ce对Sn-Bi合金凝固过程的影响。试验结果表明

对Sn-55Bi亚共晶合金

旋转磁场能显著地细化晶粒

抑制初生相Sn的生长

改善组织;对Sn-65Bi过共晶合金

施加旋转磁场消除了组织不均匀的现象

但对初生相Bi的细化作用不大;在Sn-65Bi过共晶合金中加入1%（质量分数）的Ce后施加旋转磁场

明显抑制了初生相的生长

大块Bi相得到显著细化

分析认为这是由旋转磁场及Ce共同作用的结果。

Abstract

Effects of rotating magnetic field and Ce modification on solidification structure of eutectic Sn-Bi alloy have been observed. It is found that rotating magnetic filed can obviously refine the grain size in alloy and improve the structure in hypoeutectic Sn-55Bi due to restrain the growth of primary phase Sn

while rotating magnetic field can eliminate the uneven structure distribution in Sn-65Bi alloy

however

it can little affects on refining Bi primary phase. The growth of primary phase Bi can be sharply restrained to result in the obvious refinement of bulk Bi phase by exerting rotating magnetic field on hypereutectic Sn-65Bi alloy with 1% Ce modification

which is attributed to the co-action of rotating magnetic field and Ce modification.