EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Abstract
Unidirectional solidification experiments were performed using a rotating magnetic field (RMF) to study the effect of the melt flow on the solidified micro-and mesostructure. In the case of one sample, the magnetic field changed between 5 and 35 mT. The experiments were performed with two temperature gradients (~10 K/mm and ~4 K/mm), and six different solid/liquid interface velocities (from 0,04 to 0,2 mm/s). On the parallel section with the sample axis, the columnar/equiaxed transition (CET), equiaxed/columnar transition (ECT), the secondary dendrite arm spacing (SDAS) and with EDS the macrosegregation, on the cross section (perpendicular to the sample axis) after colour etching the primary dendrite arm spacing (PDAS) and the grain structure was investigated.
Table 1. Parameters of RMF experiments