The mechanical vibration with a vertical direction was exerted on the AZ91 D magnesium alloy produced by expendable pattern shell casting

and effects of vibration frequency and amplitude on filling ability of AZ91 D magnesium alloy were investigated.Meanwhile

comparison between vibration and vibration-free was also analyzed at different pouring temperatures.According to analysis of the length and area obtained at different parameters

effects of mechanical vibration on filling ability of the AZ91 Dmagnesium alloy produced by expendable pattern shell casting were investigated.The results show that filling ability of the alloy with the mechanical vibration greatly improved compared to the alloy without vibration at different casting temperatures

and the lower the pouring temperature

the greater the ability to increase.At 690 ℃

the filling length is improved by 75.6%

and the filling area is increased by82.3%.With the increases of vibration frequency and amplitude

the filling ability of AZ91 Dgradually is increased gradually.When the vibration frequency is 100 Hz and the amplitude is 1.0mm

the AZ91 D magnesium alloy produced by the expendable pattern shell casting exhibits desirable filling ability.