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Effect Of Magnetic-Field On The Microstructure And Macrosegregation In Directionally Solidified Pb-Sn Alloys, Surendra N. Tewari, Rajesh Shah, Hui Song

Chemical & Biomedical Engineering Faculty Publications

An investigation into the influence of a transverse magnetic field (0.45 T) on the mushy zone morphology and macrosegregation in directionally solidified hypoeutectic Pb-Sn alloy shows that the field has no influence on the morphology of dendritic arrays. The field does, however, cause severe distortion in the cellular array morphology. Cellular arrayed growth with the magnetic field results in an extensive channel formation in the mushy zone, as opposed to the well-aligned and uniformly distributed cells formed in the absence of the field. The channels are produced due to the anisotropy in the thermosolutal convection caused by the magnetic field. …