The ZL205A alloy samples were prepared by alternating magnetic field in vacuum differential pressure classification

and the relative density of the sample was characterized.The effects of the synergistic field on the relative density of ZL205A alloy sample were investigated.The results show that when the magnetic field strength is lower than 20 mT

the relative density of ZL205A alloy is improved greatly with enhancing the synergistic field effect.With the magnetic field strength higher than 20 mT

the relative density of ZL205A alloy sample is decreased with the increase of the classification pressure.Under the action of different synergistic fields

the relative density of the sample is decreased firstly and then increased along the casting direction.With the magnetic field strength of 20 mT and the grading pressure difference of 130 kPa

the relative density of the ZL205A alloy sample reaches a maximum value of 0.989 2

which is 0.38% higher than that of the first-stage pressure casting sample in the alternating magnetic field.