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

The experiments aimed to investigate the effect of stirring by Rotation Magnetic Field (RMF) on the solidified micro- and mesostructure of Al-12.6%Si alloy. The solidification experiments were performed in a Bridgman-type furnace in earth conditions at an average sample-movement velocity (vmov = 0.1 mm/s) and average temperature gradients (G = 6 K/mm) without stirring the melt as well as during a magnetic stirring of different intensity. The diameter of the samples was 8 mm, and their length was 110 mm. In the solidification process, the sample's temperature was measured at 13 points using thermocouples. On the parallel section of the sample, the amount of the eutectic, the Si concentration distribution, the interlamellar distances (λ), the length, and orientation angle of Si lamellas were investigated by using new measuring methods