研究行波磁场对铝合金除气行为的影响,计算行波磁场对气泡形核临界半径的影响。结果表明:在行波磁场作用下,气泡的临界形核半径随着电磁场强度的增大呈线性递减,电磁力促进了气泡的非均匀形核,电磁力使得气泡在熔体中长大,并在电磁力的驱动下向熔体的外部溢出。试样中的气泡数随行波磁场感应强度的增大而减少。 The influence of traveling wave magnetic field on outgassing behavior of aluminum alloy was studied and the effect of traveling magnetic field on the critical radius of bubble nucleation was calculated. The results show that under the action of traveling magnetic field, the critical nucleation radius of bubble decreases linearly with the increase of electromagnetic field intensity. Electromagnetic force promotes the nonuniform nucleation of bubbles. Electromagnetic force makes bubbles grow in the melt In the electromagnetic force driven to the outside of the melt overflow. The number of bubbles in the sample decreases with increasing induction intensity of the traveling wave magnetic field.