Purification of AZ80 and Degassing of AZ91 Alloy by Ultrasonic Treatment

The effects of ultrasonic power, treatment time and holding on AZ80 magnesium melt purification by field were studied. results indicate that can accelerate the separation inclusions attain purification. When alloy is treated with power 80 W at 650 °C for 60 s 100 s, best achieved. Moreover, effect degassing AZ91 was also investigated. 150 90 hydrogen content efficiency are 9.6 cm3/100 g 50.5%, respectively. corresponding mechanical properties Rm = 194 MPa, R0.2 133 MPa A 4.8%, respectively, mechanisms analyzed because cavitation effect.