Effect of Modulated Helical Magnetic Field on Solidifying Segregation of Sn-3.5 Wt Pct Pb Alloy in a Directional Solidification

被引：6

作者：

Cheng, Long ^{[1
]}

Hao, Wenyu ^{[1
]}

Liu, Runcong ^{[1
]}

Wang, Xiaodong ^{[1
]}

Gong, XiuFang ^{[2
]}

Baltaretu, Florin ^{[3
]}

Fautrelle, Yves ^{[4
]}

机构：

[1] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 101408, Peoples R China

[2] State Key Lab Long Life High Temp Mat Dongfang Tu, Deyang 618000, Sichuan, Peoples R China

[3] UTC Bucharest, Bd Pache Protopopescu, Bucharest 999032, Romania

[4] Grenoble Alper Univ, SIMAP, EPM, BP75, F-38402 St Martin D Heres, France

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2022年 / 53卷 / 01期

关键词：

FLOW DRIVEN; PULSE SEQUENCES; PART II; MACROSEGREGATION; CONVECTION;

D O I：

10.1007/s11663-021-02330-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a modulated permanent helical magnetic field is imposed to improve segregation during directional solidification in a binary Sn-3.5 wt pct Pb alloy. The magnetic force created by this magnetic field significantly interferes with heat, mass and momentum transfer of molten metal during solidification. Our experimental results show that this magnetic field, with an appropriate modulation frequency, can not only promote columnar-to-equiaxed transition (CET) but also significantly reduce solute segregation otherwise caused by conventional helical magnetic fields. Our analysis demonstrates the advantages of this approach over natural convection and conventional electromagnetically forced convection.

引用

页码：71 / 83

页数：13

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