The effect of travelling and rotating magnetic fields on the structure of aluminum alloy during its crystallization in a cylindrical crucible

S. Denisov¹ - V. Dolgikh¹ - S. Khripchenko^{1, 2} - I. Kolesnichenko^{1, 2} - I. Nikulin²

¹ Institute of Continuous Media Mechanics, Perm, Russia
² Perm State National Research Polytechnic University, Perm, Russia

Abstract
The paper focuses on the study of processes, which take place in liquid metal during its directional solidification in a cylindrical crucible under MHD stirring conditions. The results of physical experiments and calculations are described concerned with the study of directional solidification of aluminum alloy in a cylindrical crucible under diverse MHD stirring modes generated by travelling and rotating magnetic fields and by the superposition of these. The performed experiments evidence that the types of magnetic (traveling or rotating) fields and their intensity determine the grain structure of alloys (solid solutions and alloys with eutectic), structural zone length, grain size, distribution of structural components, rigidity, and other alloy mechanical characteristics in ingots cast in the presence of MHD stirring. Tables 3, Figs 17, Refs 26.