Numerical Modeling of Low Frequency Electromagnetic Casting of 7XXX Aluminum Alloys


Article Preview

Low frequency electromagnetic casting is a new developed technology that appears in the recent years. In this paper, a comprehensive mathematical model has been developed to describe the interaction of the multiple physics fields during LFEC (low frequency electromagnetic casting) process. The model is based on a combination of the commercial finite element package ANSYS and the commercial finite volume package FLUENT, with the former for calculation of the electromagnetic field and the latter for calculation of the magnetic driven fluid flow, heat transfer and solidification. Moreover, the model has been verified against the temperature measurements obtained from one 7XXX aluminum alloy billet of 200mm in diameter, during the LFEC casting processes, respectively. There was a good agreement between the calculated results and the measured results. Further, the effects of electromagnetic frequency on fluid flow, temperature field and solidification during LFEC process have investigated numerically by using the mathematic model. The choosing criterion of the electromagnetic frequency during LFEC process has been used in order to obtain the best structure of the billets by analyzing the effects of fluid flow and temperature field on the solidification process in the presence of electromagnetic field.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




H. T. Zhang et al., "Numerical Modeling of Low Frequency Electromagnetic Casting of 7XXX Aluminum Alloys", Materials Science Forum, Vols. 546-549, pp. 707-712, 2007

Online since:

May 2007




[1] E.F. Emley, international metals reviews, June 1976, pp.75-115.

[2] J.W. Evans, journal of metals, May 1995, pp.47-52.

[3] Vivès C., Metallurgical Transactions, 1989, 20B, pp.623-629.

[4] Vivès C., Metallurgical Transactions, 1989, 20B, pp.631-643.

[5] Jie Dong, Metallurgical and Materials Transactions A, Jan. 2005, pp.75-78.

[6] Jie Dong, Materials Letters, May. 2005, pp.1502-1506.

[7] J.D. Lavers: IEEE-LAS Conf. Proc, San Francisco, CA, 1982, pp.954-960.

[8] J.D. Lavers and M.R. Ahmed: casting of near net shape products, TMS, Warrendale, PA, 1988, pp.395-410. (a) (b) Fig. 9 the effects of electromagnetic frequency on (a) sump shape and (b) sump depth.