Effect of high magnetic field on the primary dendrite arm spacing and segregation of directionally solidified superalloy DZ417G

High magnetic field has been applied to the directional solidification of superalloy DZ417G. The results show that high magnetic field can significantly influence the primary dendrite arm spacing and microsegregation. A 6 T magnetic field can decrease the primary dendrite arm spacing by 22% at a drawing speed of 40 μm/s. Nevertheless, when the magnetic field is greater than 6 T the primary dendrite arm spacing begins to increase. The...