This work aimed to develop an efficient stirring facility
and method with magnetic induction. Because the stirring by Rotation Magnetic
Field (RMF) often produces strong macrosegregation, the Traveling Magnetic
Field (TMF) was chosen for the stirring. The construction of this TMF
twin-inductor is significantly different from the traditional magnetic
stirrers, and it has a closed magnetic circuit. Three different magnetic fields
can be produced with the developed twin-inductor to investigate the stirring effect.
The inductor develops strong shearing stress at the flow perpendicular to the
solidification front by flowing a part of metallic-melt layers touching each
other in a direction opposite. The TMF twin inductor was combined with a
solidification facility for the unidirectional solidification of different
alloys.
The effect on the grain structure of the three different
magnetic fields was compared using Al-7%Si-1% and Al-10%Si-0,2%Fe alloys. It
has demonstrated that the most efficient mixing occurs when the magnetic fields
in the two inductors move opposite each other.
Author(s) Details:
Arnold Rónaföldi,
HUN REN- University of Miskolc, Materials Science Research Group,
Hungary and Institute of Physical Metallurgy, Metal Forming, and
Nanotechnology, University of Miskolc, Hungary.
Zsolt Veres,
HUN REN-
University of Miskolc, Materials Science Research Group, Hungary and Institute
of Physical Metallurgy, Metal Forming, and Nanotechnology, University of
Miskolc, Hungary.
Mária Svéda,
HUN REN- University of Miskolc, Materials Science Research Group,
Hungary.
András Roósz,
HUN REN- University of Miskolc, Materials Science Research Group,
Hungary and Institute of Physical Metallurgy, Metal Forming, and
Nanotechnology, University of Miskolc, Hungary.
Please see the link here: https://stm.bookpi.org/EMMSMFMSA/article/view/13086
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