Microstructure refinement of AZ31 alloy solidified with pulsed magnetic field

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	Microstructure refinement of AZ31 alloy solidified with pulsed magnetic field
	B. Wang; Y. S. Yang; M. L. Sun
	2010
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	20 期号:9 页码:1685-1690
摘要	The effects of a pulsed magnetic field on the solidified microstructure of an AZ31 magnesium alloy were investigated. The experimental results show that the remarkable microstructural refinement is achieved when the pulsed magnetic field is applied to the solidification of the AZ31 alloy. The average grain size of the as-cast microstructure of the AZ31 alloy is refined to 107 mu m. By quenching the AZ31 alloy, the different primary alpha-Mg microstructures are preserved during the course of solidification. The microstructure evolution reveals that the primary alpha-Mg generates and grows in globular shape with pulsed magnetic field, contrast with the dendritic shape without pulsed magnetic field. The pulsed magnetic field causes melt convection during solidification, which makes the temperature of the whole melt homogenized, and produces an undercooling zone in front of the liquid/solid interface, which makes the nucleation rate increased and big dendrites prohibited. In addition, the Joule heat effect induced in the melt also strengthens the grain refinement effect and spheroidization of dendrite arms.
部门归属	[wang bin; sun ming-li] zhejiang normal univ, coll engn, jinhua 321004, peoples r china. [yang yuan-sheng] chinese acad sci, inst met res, shenyang 110016, peoples r china.;wang, b (reprint author), zhejiang normal univ, coll engn, jinhua 321004, peoples r china;binwang@zjnu.cn
关键词	Az31 Magnesium Alloy Grain Refinement Pulsed Magnetic Field Solidified Microstructure Electromagnetic Vibrations Magnesium Billets Az91d Melt Al
URL	查看原文
WOS记录号	WOS:000282373800020
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31489
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Wang,Y. S. Yang,M. L. Sun. Microstructure refinement of AZ31 alloy solidified with pulsed magnetic field[J]. Transactions of Nonferrous Metals Society of China,2010,20(9):1685-1690.
APA	B. Wang,Y. S. Yang,&M. L. Sun.(2010).Microstructure refinement of AZ31 alloy solidified with pulsed magnetic field.Transactions of Nonferrous Metals Society of China,20(9),1685-1690.
MLA	B. Wang,et al."Microstructure refinement of AZ31 alloy solidified with pulsed magnetic field".Transactions of Nonferrous Metals Society of China 20.9(2010):1685-1690.