Numerical simulation of the casting process of an AZ91D magnesium alloy under a rotating-pulsed combined electromagnetic field

Liang Z.; Bai Q.-W.; Tian Y.-C.; Liu Y.; Zhang K.-H.; Lai H.-M.

doi:10.2298/JMMB231220016L

Journal of Mining and Metallurgy. Section B: Metallurgy (Jan 2024)

Numerical simulation of the casting process of an AZ91D magnesium alloy under a rotating-pulsed combined electromagnetic field

Liang Z.,
Bai Q.-W.,
Tian Y.-C.,
Liu Y.,
Zhang K.-H.,
Lai H.-M.

Affiliations

Liang Z.: School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou, China
Bai Q.-W.: School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou, China + Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources (Inner Mongolia University of Science and Technology), Ministry of Education, Baotou, China + Inner Mongolia Autonomous Region Carbon Neutrality Collaborative Innovation Center
Tian Y.-C.: Inner Mongolia Institute of Metal Materials, Baotou, P.R. China
Liu Y.: School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou, China
Zhang K.-H.: School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou, China
Lai H.-M.: School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou, China

DOI: https://doi.org/10.2298/JMMB231220016L
Journal volume & issue: Vol. 60, no. 2
pp. 191 – 204

Abstract

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Using an AZ91D magnesium alloy as the research object, a three-dimensional (3D) numerical model was created and simulated using simulation analysis software. The effects of a rotating electromagnetic field (REMF), a pulsed electromagnetic field (PEMF) and a rotating pulsed electromagnetic field (R-PEMF) on the magnetic field and the flow field of a metal melt were investigated. The simulation results show that during the REMF treatment a rotational force is generated on the cross-section of the melt, and the PEMF exerts a magnetic pressure on the cross-section of the melt. Under the combined effect of these two forces, the Lorentz force increases parallel to the melt axis, and a secondary flow directed towards the core of the melt is generated, which contributes to the homogenization of the melt. By analyzing the solidification structure and elemental distribution of the metal, R-PEMF was shown to effectively improve the solidification structure and macrosegregation of Al in AZ91D magnesium alloy.

Published in Journal of Mining and Metallurgy. Section B: Metallurgy

ISSN: 1450-5339 (Print); 2217-7175 (Online)
Publisher: Technical Faculty, Bor
Country of publisher: Serbia
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.doiserbia.nb.rs/journal.aspx?issn=1450-5339

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