超声参振对Al-Fe合金凝固过程的影响

在Al-Fe合金的凝固过程中引入不同功率的超声振动,利用受控凝固和受控振动相结合的实验装置和方法,研究了超声参振对Al-Fe合金熔体温度场以及组织形态和抗拉强度的影响.实验表明:熔体的温度场随振动功率的增加和振动时间的延长而升高,并趋于一个平衡的温度场;超声参振可以显著细化先共晶FeAl3相,Al-Fe合金生长的组织形态的差异主要取决于凝固速度;超声参振凝固的Al-Fe合金的热稳定性好,有良好的应用前景.

Influence of Ultrasonic Vibration on Solidification Processing of Al-Fe Alloy

Effect of ultrasonic vibration on the melt temperature field and tensile strength of Ai-Fe alloy is studied using a controlled solidification and vibration device with different vibration power. Experiment results show that the melt temperature increases with increasing vibration power and extending vibration time and tends to reach same in the melt. Ultrasonic vibration significantly refines pro-eutectic FeAl_3 phase. The difference in microstructure morphology of Al-Fe alloy mainly depends on solidification rate. The Al-Fe alloy through ultrasonic vibration solidification has good thermal stability and has good application prospect.