Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 175, Issue -, Pages 47-54Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2023.07.037
Keywords
Grain refinement; High-gradient magnetic field; Magnetic force; Lorentz force; Directional solidification
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The obvious grain refinement of primary MnSb phase has been observed in Mn-89.7 wt% Sb alloy solidified under a high-gradient magnetic field. The refinement can be attributed to the constituent supercooling in front of the solidification interface, which promotes nucleation of the primary MnSb phase, and is linked to the enrichment of Mn solute induced by the magnetic force and the Lorentz force.
The obvious grain refinement of the primary MnSb phase has been observed in the Mn-89.7 wt% Sb alloy directionally solidified under a high-gradient magnetic field. With the application of a high-gradient magnetic field, the morphology of the primary MnSb phase transformed from developed dendritic-like to equiaxed-like, and the grain size decreased by approximately 93%. Refinement of the primary MnSb phase can be attributed to the constituent supercooling in front of the solidification interface, which promoted nucleation of the primary MnSb phase. The constituent supercooling can be linked to the enrichment of the Mn solute induced by the magnetic force and the Lorentz force that drove Mn solute migration and suppressed convection.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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