Influence of a transverse static magnetic field on the orientation and peritectic reaction of Cu-10.5 at.% Sn peritectic alloy

Abstract

Peritectic alloy Cu-10.5 at.% Sn was directionally solidified at various growth speeds under a transverse static magnetic field. The experimental results indicated that the magnetic field caused the deformation of macroscopic interface morphology, the crystal orientation of primary phase along solidification direction, and the occurrence of peritectic reaction. The numerical simulations showed that the application of the magnetic field induced the formation of a unidirectional thermoelectric magnetic convection (TEMC), which modified solute transport in the liquid phase thereby enriching the solute concentration both at the sample and tri-junction scales. The modification of solidification structures under the magnetic field should be attributed to TEMC driven heat transfer and solute transport.

Effect of high magnetic field on solidification microstructure evolution of a Cu-Fe immiscible alloy

“…Consequently, it is meaningful to explore the influence of different factors such as composition, undercooling and external field on the microstructure evolution of alloys. Moreover, the application of external fields also has an essential effect on the microstructure evolution of immiscible alloys [11][12][13][14][15][16][17][18][19][20] . Wei et al [21,22] found that Lorentz force generated by the magnetic field suppressed the effect of Marangoni convection in the Cu-Co alloy, resulting in a dispersed distribution of the Co-rich phase.…”