论文部分内容阅读
研究了超声振动对铝硅合金的变质作用，结果表明：功率超声能提高液相形核率，抑制Ｓｉ 相长大；空化效应能打断生长中的硅晶体，改变硅的形态和分布，减小其对基体的削弱作用，超声变质是细化合金组织，提高合金性能的有效途径。
The effect of ultrasonic vibration on the Al-Si alloy was studied. The results show that ultrasonic power can increase the nucleation rate of liquid phase and inhibit the growth of Si phase. The cavitation effect can interrupt the growth of silicon crystals, change the morphology and distribution of silicon, Reduce its weakened effect on the substrate, ultrasonic metamorphism is to refine the alloy, an effective way to improve the performance of the alloy.