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研究了铝合金低压铸造凝固过程中机械振动频率和时间对ZL101铝合金组织、综合力学性能的影响。结果表明:机械振动使铝合金的组织更加均匀细化;机械振动频率和时间均能影响铸件的力学性能,且机械振动频率影响要大于机械振动时间。当机械振动频率为50 Hz、振动时间为60 s时,铸件的抗拉强度和伸长率最大,分别为224.8 MPa和3.9%;当机械振动时间为60 s时,振动频率从30 Hz提高到50 Hz,铸件的抗拉强度和伸长率分别提高了25.59%和20.0%。
The effect of mechanical vibration frequency and time on microstructure and mechanical properties of ZL101 aluminum alloy during the solidification process of aluminum alloy low pressure casting was studied. The results show that the mechanical vibration can make the microstructure of aluminum alloy more uniform and thinner. The mechanical vibration frequency and time can affect the mechanical properties of the castings, and the influence of mechanical vibration frequency is greater than the mechanical vibration time. When the mechanical vibration frequency is 50 Hz and the vibration time is 60 s, the tensile strength and elongation of the castings are the largest, 224.8 MPa and 3.9% respectively. When the mechanical vibration time is 60 s, the vibration frequency is increased from 30 Hz to 50 Hz, the tensile strength and elongation of castings increased by 25.59% and 20.0% respectively.