Study on Rheological Model of Semi-solid Al2Y/AZ91 Magnesium Matrix Composites Slurry Prepared by Ultrasonic Vibration

Semi-solid Al2Y/AZ91 magnesium matrix composites slurry was prepared by ultrasonic vibration, and the apparent viscosity of the semi-solid slurry was measured. Results show that with the increase of volume fraction of Al2Y the apparent viscosity of semi-solid Al2Y/AZ91 magnesium matrix composites slurry increases. The relationship between apparent viscosity and solid fraction varies in accordance with the exponential law. Under the same experimental conditions, an apparent viscosity decreases with the increase of ultrasonic power. Based on the experimental data fitting, a rheological model of semi-solid Al2Y/AZ91 magnesium matrix composites prepared by ultrasonic vibration was established.