Analysis of the Almgsi-alloy structure formed under the influence of low-frequency pulsed Lorentz force

verfasst von: D. Musaeva, E. Baake, V. Ilin, G. Jarczyk
Abstract: The paper studies the influence of Al-alloy melt motion forced by a pulsed electromagnetic force on the solidification process. In order to estimate the influence, the final structure of solidified samples was considered. The investigation was performed experimentally in a cylindrical vessel. To generate electromagnetic force pulses with frequencies ranging 0.1 to 10 Hz, the generation of alternating magnetic field was interrupted. For comparison, the influence of two other regimes was considered: the crystallization process under natural convection and under a steadily applied alternating magnetic field. Variation of the average grain size along the ingots radius and axis was compared for all regimes. Under buoyancy, the effect of more homogeneous distribution of grains as well as their refinement was observed for the regimes of permanent stirring and EM force pulses with frequencies below 1Hz. The effect decreases with increase pulsed frequency and for 5 and 10Hz it only slightly differs from the influence of the uninterrupted field. With 0.2Hz, the average grain diameter reduces by 36% with regard to the structure occurred under buoyancy. The factors causing this effect are discussed in the article.
Organisationseinheit(en): Institut für Elektroprozesstechnik
Externe Organisation(en): Kazan State Power Engineering University
ALD Vacuum Technologies
Typ: Artikel
Journal: Magnetohydrodynamics
Band: 53
Seiten: 245-254
Anzahl der Seiten: 10
ISSN: 0024-998X
Publikationsdatum: 2017
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik und Astronomie (insg.), Elektrotechnik und Elektronik
Elektronische Version(en): https://doi.org/10.22364/mhd.53.2.3 (Zugang: Geschlossen)

BibTeX

@article{1a0b9cc471c14a4aa0ac6bb17e1f611a,
title = "Analysis of the Almgsi-alloy structure formed under the influence of low-frequency pulsed Lorentz force",
abstract = "The paper studies the influence of Al-alloy melt motion forced by a pulsed electromagnetic force on the solidification process. In order to estimate the influence, the final structure of solidified samples was considered. The investigation was performed experimentally in a cylindrical vessel. To generate electromagnetic force pulses with frequencies ranging 0.1 to 10 Hz, the generation of alternating magnetic field was interrupted. For comparison, the influence of two other regimes was considered: the crystallization process under natural convection and under a steadily applied alternating magnetic field. Variation of the average grain size along the ingots radius and axis was compared for all regimes. Under buoyancy, the effect of more homogeneous distribution of grains as well as their refinement was observed for the regimes of permanent stirring and EM force pulses with frequencies below 1Hz. The effect decreases with increase pulsed frequency and for 5 and 10Hz it only slightly differs from the influence of the uninterrupted field. With 0.2Hz, the average grain diameter reduces by 36% with regard to the structure occurred under buoyancy. The factors causing this effect are discussed in the article.",
author = "D. Musaeva and E. Baake and V. Ilin and G. Jarczyk",
year = "2017",
doi = "10.22364/mhd.53.2.3",
language = "English",
volume = "53",
pages = "245--254",
journal = "Magnetohydrodynamics",
issn = "0024-998X",
publisher = "Institute of Physics, University of Latvia",
number = "2",
}