摘要
The effect of ultrasonic treatment on the β-phase （Mg17Al12） morphology of an Mg-9.0wt.%Al alloy was studied. The result shows that with high-intensity ultrasonic vibration employed during the solidifying of Mg-9.0wt.%Al, the β-phase in the entire cross section of the billet is significantly refined and also changed from continuous to discontinuous morphology. Spherical β-phase is formed during the solidification of the billet treated with high-intensity ultrasonic vibration.
The effect of ultrasonic treatment on the β-phase （Mg17Al12） morphology of an Mg-9.0wt.%Al alloy was studied. The result shows that with high-intensity ultrasonic vibration employed during the solidifying of Mg-9.0wt.%Al, the β-phase in the entire cross section of the billet is significantly refined and also changed from continuous to discontinuous morphology. Spherical β-phase is formed during the solidification of the billet treated with high-intensity ultrasonic vibration.
基金
supported by the Major State Basic Research Development Program of China (Nos. 2007CB613701 and 2007CB613702)
the National Natural Science Foundation of China (Nos. 50574028 and 50374025)
the National Key Technology Research and Development Program of China (Nos. 2006BAE04B01-5 and 2006BAE04B02-5)
the 111 Project of China (No. B07015)
