RAPID DIRECTIONAL SOLIDIFICATION OF Al-Pb ALLOY UNDER A STATIC MAGNETIC FIELD

IMR OpenIR

	RAPID DIRECTIONAL SOLIDIFICATION OF Al-Pb ALLOY UNDER A STATIC MAGNETIC FIELD
	Zhao Jiuzhou; Li Haili; Wang Qingliang; Zhao Lei; He Jie
通讯作者	Zhao Jiuzhou(jzzhao@imr.ac.cn)
	2009-11-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:11 页码:1344-1348
摘要	The effect of a static magnetic field on the solidification of monotectic alloy has attracted great attentions. But up to date little is known about the details of the magnetic field influences on the microstructure development during the solidification of a monotectic alloy. In this paper, rapid directional solidification experiments are carried out with Al-Pb alloys under a static magnetic field. The dependence of the solidification microstructure on the intensity of the magnetic field is investigated. The mechanism through which the magnetic field affects the microstructure formation is analyzed. It is indicated that the static magnetic field causes only a small decrease in the Marangoni migration velocity and the Stokes settlement velocity of the minority phase droplets during the liquid-liquid decomposition. Such a small change in the moving velocity of the droplets has only a negligible effect on the microstructure formation. The static magnetic field can suppress the convection efficiently. It enhances the spatial homogeneity of the liquid-liquid phase transformation along the radial direction of the sample, reduces the collision and coagulation frequency between the minority phase droplets and, therefore, causes a decrease in the largest and average sizes of the Pb-rich particles in the solidified sample as well as in the width of the particles size distribution. A static magnetic field is favorable for obtaining a monotectic alloy with well dispersed microstructure.
关键词	Al-Pb alloy solidification magnetic field convection
资助者	National Natural Science Foundation of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50771097] ; National Natural Science Foundation of China[50671111]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000272502600011
出版者	SCIENCE PRESS
引用统计	被引频次：6[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/321006/97757
专题	中国科学院金属研究所
通讯作者	Zhao Jiuzhou
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao Jiuzhou,Li Haili,Wang Qingliang,et al. RAPID DIRECTIONAL SOLIDIFICATION OF Al-Pb ALLOY UNDER A STATIC MAGNETIC FIELD[J]. ACTA METALLURGICA SINICA,2009,45(11):1344-1348.
APA	Zhao Jiuzhou,Li Haili,Wang Qingliang,Zhao Lei,&He Jie.(2009).RAPID DIRECTIONAL SOLIDIFICATION OF Al-Pb ALLOY UNDER A STATIC MAGNETIC FIELD.ACTA METALLURGICA SINICA,45(11),1344-1348.
MLA	Zhao Jiuzhou,et al."RAPID DIRECTIONAL SOLIDIFICATION OF Al-Pb ALLOY UNDER A STATIC MAGNETIC FIELD".ACTA METALLURGICA SINICA 45.11(2009):1344-1348.