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<p>The effects of ultrasonic vibration on feeding of AlSi(x)Mg0.35Cu0.6 castings with different solidification temperature ranges were investigated by applying ultrasonic vibration exclusively to the feeding channel. The results show that the ultrasonic vibration applied on feeding channel could decrease the shrinkage porosity of casting and improve feeding efficiency during solidification. However, when the ultrasonic vibration strength exceeds a certain threshold, this improvement in feeding efficiency decreases. Ultrasonic vibration could alter the porosity, thereby changing the permeability of feeding channels&#xa0;during solidification, which is favorable to the feeding efficiency, and the effect is proportional to vibration intensity. In addition, the seepage velocity analogy experiments reveal that the acoustic pressure generated by ultrasonic vibration could increase the seepage pressure and consequently promote the Darcy flow in feeding process of casting. These two mechanisms work together to enhance the feeding efficiency of alloy. However, when the ultrasonic vibration reaches a high strength that could induce severe turbulence in liquid, which consequently reduces effective permeability and results in decreased seepage velocity, as well as feeding efficiency.</p>

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Effects of Ultrasonic Vibration on the Feeding Behavior of AlSi(x)Mg0.35Cu0.6 Alloy

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Hongbo Mu,
  • Zhiming Wang,
  • Zhiping Sun,
  • Bingtao Tang,
  • Bing Liu,
  • Weifeng Rao

摘要

The effects of ultrasonic vibration on feeding of AlSi(x)Mg0.35Cu0.6 castings with different solidification temperature ranges were investigated by applying ultrasonic vibration exclusively to the feeding channel. The results show that the ultrasonic vibration applied on feeding channel could decrease the shrinkage porosity of casting and improve feeding efficiency during solidification. However, when the ultrasonic vibration strength exceeds a certain threshold, this improvement in feeding efficiency decreases. Ultrasonic vibration could alter the porosity, thereby changing the permeability of feeding channels during solidification, which is favorable to the feeding efficiency, and the effect is proportional to vibration intensity. In addition, the seepage velocity analogy experiments reveal that the acoustic pressure generated by ultrasonic vibration could increase the seepage pressure and consequently promote the Darcy flow in feeding process of casting. These two mechanisms work together to enhance the feeding efficiency of alloy. However, when the ultrasonic vibration reaches a high strength that could induce severe turbulence in liquid, which consequently reduces effective permeability and results in decreased seepage velocity, as well as feeding efficiency.