Numerical study on directional solidification of AlSi alloys with rotating magnetic fields under microgravity conditions

被引:41
作者
Hainke, M [1 ]
Friedrich, J [1 ]
Müller, G [1 ]
机构
[1] Fraunhofer Inst IISB, Crystal Growth Lab, Erlangen, Germany
关键词
D O I
10.1023/B:JMSC.0000017762.16763.2b
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A global thermal model of the ARTEX facility, developed with the modeling tool CrysVUn, is presented. The model is validated with experimental data obtained under microgravity conditions during the TEXUS39 mission. Numerical studies are then reported, in which the effects of a rotating magnetic field are investigated during directional solidification of binary AlSi7 alloys. It appears that beyond a certain magnetic field strength a macrosegregation effect is resulting, leading to the development of a liquid channel inside the mushy zone. (C) 2004 Kluwer Academic Publishers.
引用
收藏
页码:2011 / 2015
页数:5
相关论文
共 31 条
[1]  
AHRWEILER S, 2000, P INT S MICR RES APP
[2]   Directional solidification in an aerogel furnace with high resolution optical temperature measurements [J].
Alkemper, J ;
Sous, S ;
Stocker, C ;
Ratke, L .
JOURNAL OF CRYSTAL GROWTH, 1998, 191 (1-2) :252-260
[3]   Modelling of the isothermal melt flow due to rotating magnetic fields in crystal growth [J].
Barz, RU ;
Gerbeth, G ;
Wunderwald, U ;
Buhrig, E ;
Gelfgat, YM .
JOURNAL OF CRYSTAL GROWTH, 1997, 180 (3-4) :410-421
[4]  
Beckermann C., 2001, ENC MAT SCI TECH, V47, P4733
[5]  
BECKERMANN C, 1995, ANN REV HEAT TRANSFE, V6, P115
[6]   SWIRLING FLOW IN AN AXISYMMETRICAL CAVITY OF ARBITRARY PROFILE, DRIVEN BY A ROTATING MAGNETIC-FIELD [J].
DAVIDSON, PA .
JOURNAL OF FLUID MECHANICS, 1992, 245 :669-699
[7]   SWIRLING RECIRCULATING FLOW IN A LIQUID-METAL COLUMN GENERATED BY A ROTATING MAGNETIC-FIELD [J].
DAVIDSON, PA ;
HUNT, JCR .
JOURNAL OF FLUID MECHANICS, 1987, 185 :67-106
[8]   THE IMPORTANCE OF SECONDARY FLOW IN THE ROTARY ELECTROMAGNETIC STIRRING OF STEEL DURING CONTINUOUS-CASTING [J].
DAVIDSON, PA ;
BOYSAN, F .
APPLIED SCIENTIFIC RESEARCH, 1987, 44 (1-2) :241-259
[9]   Floating zone growth of silicon in magnetic fields:: IV.: Rotating magnetic fields [J].
Dold, P ;
Cröll, A ;
Lichtensteiger, M ;
Kaiser, T ;
Benz, KW .
JOURNAL OF CRYSTAL GROWTH, 2001, 231 (1-2) :95-106
[10]   Effects of gravity on columnar dendritic growth of metallic alloys: flow pattern and mass transfer [J].
Dupouy, MD ;
Camel, D .
JOURNAL OF CRYSTAL GROWTH, 1998, 183 (03) :469-489