Comparative study on structural transformation of low-melting pure Al and high-melting stainless steel under external pulsed magnetic field

Numerical and experimental studies of surface-pulsed magneto-oscillation on solidification

“…Special attention must be focused on production safety and the melt is easy to be contaminated. Gao et al (2007) found that PMF induced by the electric current in the coil has to reach extremely high value in order to obtain satisfactory effect. As a result, undesirable splashing can occur at the top surface of the melt.…”

Multi-objective optimization of natural convection in a cylindrical annulus mold under magnetic field using particle swarm algorithm

“…Consequently, the rate of 53 heat transfer convection should be minimized in this process. Gao 54 et al [1] proved that imposing a magnetic field leads to products of …”

Grain Refinement Induced by a Pulsed Magnetic Field and Synchronous Solidification

“…In physical methods, the magnetic field plays key role, such as applying alternating or rotating magnetic fields to generate electromagnetic stirring in the melt, in the modification of solidification structures; consequently, dendritic arms of solidification are fragmented by forced convection to favor a columnar-to-equiaxed transition [7,8]. In contrast to a traditional alternating or rotating magnetic field, a pulsed magnetic field (PMF) refines the solidification structuresa capability attributed to its large energy capacity and instantaneous high magnetic intensity [9][10][11].…”

“…A probable refinement mechanism of PMO on solidification structures of pure Al was proposed, in which the nucleus falls off the mould wall and drifts in the melt, resulting in the multiplication of nucleation. However, Li and his coworkers [10,11] applied a PMF to solidify 1Cr18Ni9Ti stainless steel. They found that an optimal value of magnetic intensity, which can refine the microstructure, exists.…”