摘要
利用高能超声法原位制备Al_2Y/AZ91镁基复合材料半固态浆料,对其半固态表观粘度进行测量。实验表明:半固态Al_2Y/AZ91镁基复合材料表观粘度随固相分数和Al_2Y的体积分数的增加而增大,半固态表观粘度与固相分数之间关系按指数规律变化,在相同的实验条件下,半固态表观粘度随超声功率增大而减小。在对实验数据拟合的基础上,建立了半固态Al_2Y/AZ91镁基复合材料的流变模型。
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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2016年第9期2227-2231,共5页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51165032,51364035)
Funded by the Ministry of Education Tied up with the Special Research Fund for the Doctoral Program for Higher School(20133601110001)
Innovative Group of Science and Technology of College of Jiangxi Province(00008713)
Production and Teaching and Research Cooperation Plan of Nanchang Non-party Experts and Doctor(2012-CYH-DW-XCL-002)
Special Funds for Postgraduate Innovation of Jiangxi Province
关键词
超声
Al2Y/AZ91镁基复合材料
半固态
流变模型
ultrasonic vibration
Al2Y/AZ91 magnesium matrix composites
semi-solid slurry
rheological model
