Numerical Simulation of two-phase Solidification Process of

Acta Metall Sin

2007, Vol. 43

Issue (6): 668-672 DOI:

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Numerical Simulation of two-phase Solidification Process of

大连理工大学三束材料改性国家重点实验室及材料学院

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. Numerical Simulation of two-phase Solidification Process of. Acta Metall Sin, 2007, 43(6): 668-672 .

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Abstract In this paper, the two-phase model of globular equiaxed grain solidification has been used to compute the solidification process of Sn-3.5%Pb hollow billet under traveling magnetic field. The temperature gradient, cooing rate, solute concentration distribution and grain size are studied under different stirring velocities. The results show that the traveling magnetic field can result in a global circulation flow in the molten metal, the temperature field is uniformed and the grain size is refined which improve the solidification structure of hollow billet. However, the macro segregation is produced in the hollow billet by the forced flow. So, the stirring velocity should be controlled carefully during the casting of hollow billets.

Key words: traveling magnetic field hollow billet temperature field concentration field

Received: 10 October 2006

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2007/V43/I6/668

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