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Refinement Mechanism of Low Voltage Pulsed Magnetic Field on Solidification Structure of Silicon Steel
Y. J. Li; Y. F. Teng; Y. S. Yang
2014
Source PublicationMetals and Materials International
ISSN1598-9623
Volume20Issue:3Pages:527-530
AbstractThe grain refinement of a silicon steel solidified with a low voltage pulsed magnetic field (LVPMF) was investigated by experiments and modeling. The experiment results show that complete fine equiaxed grains are acquired by applying the LVPMF. The effects of process parameters, such as the melt cooling rate and superheating on the solidification structure, were also studied. Complete fine equiaxed grains can be obtained under a larger range of cooling rate or superheating when the LVPMF is applied. The magnetic force and the melt flow during solidification were modeled and simulated to reveal the grain refinement mechanism. The simulation results show that the LVPMF has a double role in electromagnetic convection and electromagnetic vibration on the alloy melt. We propose the refining mechanism: The melt vibration and convection can promote nucleus multiplication, which contributes to heterogeneous nucleation enhancement and leads to a high nucleation rate and grain refinement.
description.department[li, y. j. ; teng, y. f. ; yang, y. s.] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; yang, ys (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; ysyang@imr.ac.cn
KeywordAlloys Casting Grain Refinement Computer Simulation Low Voltage Pulsed Magnetic Field Grain-refinement Superalloy In718 Stainless-steel Microstructure Alloy Al
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73289
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. J. Li,Y. F. Teng,Y. S. Yang. Refinement Mechanism of Low Voltage Pulsed Magnetic Field on Solidification Structure of Silicon Steel[J]. Metals and Materials International,2014,20(3):527-530.
APA Y. J. Li,Y. F. Teng,&Y. S. Yang.(2014).Refinement Mechanism of Low Voltage Pulsed Magnetic Field on Solidification Structure of Silicon Steel.Metals and Materials International,20(3),527-530.
MLA Y. J. Li,et al."Refinement Mechanism of Low Voltage Pulsed Magnetic Field on Solidification Structure of Silicon Steel".Metals and Materials International 20.3(2014):527-530.
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