A. Bojarevičs, I. Kaldre, M. Milgrāvis, T. Beinerts
Direct chill casting of aluminium alloys under electromagnetic interaction
Direct chill casting is one of the methods used in industry to obtain good microstructure and properties of aluminium alloys. Nevertheless, for some alloys grain structure is not optimal. In this study, we test the principle of using electromagnetic interaction to modify melt convection near the solidification interface. Solidification under electromagnetic interaction has been widely studied, but usually at low solidification velocity and high thermal gradient, where influence by electromagnetic interaction is demonstrated. This type of interaction may succeed fragmentation of dendrite arms and transport of solidification nuclei thus leading to improved material structure and properties. Casting of 10 mm diameter Al alloy rod under electromagnetic interaction caused by DC magnetic field and electric current has been done.
Proceedings of the VIII International Scientific Colloquim "Modelling for Materials Processing", Riga, Latvia, (2017), pp. 259-262.