超声波搅拌法制备半固态Al-5Cu合金  

Preparation of Semi-solid Al-5Cu Alloy by Ultrasonic Stirring

作　　者：李拥军[1] 程和法[1] 黄笑梅[1] 张章[1] 莫立娥[1] 

机构地区：[1]合肥工业大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2007年第6期448-450,共3页Special Casting & Nonferrous Alloys

摘　　要：采用超声波搅拌法制备半固态Al-5Cu合金,研究了超声波导入时熔体的温度、搅拌时间和超声波输出功率3个重要参数对获得半固态Al-5Cu合金组织形貌的影响。结果表明,在熔体处于610～660℃之间导入超声波,随着熔体温度的升高,合金初生晶粒逐渐趋于细小的球状颗粒;当熔体为660℃时,随着导入超声波输出功率的增大、搅拌时间的延长,Al-5Cu合金初生相形貌由粗大的枝晶状逐渐转变为细小的球状晶粒。Semi-solid Al-5Cu alloy was prepared by ultrasonic stirring.The effects of important parameters,such as melt temperature,the ultrasonic treatment time and output power of ultrasonic stirrer,on the semi-solid structure of the alloy have been observed The results show that finer primary phase can be observed with increasing the melt temperature in the range of 610 to 660 ℃.In addition,the primary phase in the Al-5Cu alloy can be converted from coarse dendrite into fine spheroids with increasing the output power and time of ultrasonic stirrer at 660 ℃.

关 键 词：半固态 超声波搅拌 Al-5Cu合金 微观组织 

分 类 号：TG249[金属学及工艺—铸造] TB559[理学—物理]