Preparation of Al Alloy ZL101 Semi-solid Slurry by Ultrasonic Vibration Method

Zhao Junwen; Wu Shusen; Xie Lizhi

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Preparation of Al Alloy ZL101 Semi-solid Slurry by Ultrasonic Vibration Method
Issue 11, Pages: 846-849(2007)
Published： 2007 ，
DOI：

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[1]赵君文,吴树森,谢礼志.超声波振动制备ZL101铝合金半固态浆料[J].特种铸造及有色合金,2007(11):846-849+817.

Zhao Junwen, Wu Shusen, Xie Lizhi. Preparation of Al Alloy ZL101 Semi-solid Slurry by Ultrasonic Vibration Method. [J]. Special Casting & Nonferrous Alloys (11):846-849(2007)
[1]赵君文,吴树森,谢礼志.超声波振动制备ZL101铝合金半固态浆料[J].特种铸造及有色合金,2007(11):846-849+817. DOI：

Zhao Junwen, Wu Shusen, Xie Lizhi. Preparation of Al Alloy ZL101 Semi-solid Slurry by Ultrasonic Vibration Method. [J]. Special Casting & Nonferrous Alloys (11):846-849(2007) DOI：

摘要

研究了超声波振动制备ZL101铝合金半固态浆料中相关工艺参数对半固态微观组织的影响规律

并对超声波振动下半固态微观组织的形成机理进行了初步探讨。将熔体温度为630～660℃的ZL101铝液浇入特制样杯中

进行超声波振动或保温处理不同时间

然后取少量熔体水淬。对各种条件下的金相试样进行分析

结果发现

振动144s即可使α-Al初生晶粒平均直径达到90μm左右

平均形状系数达到0.5以上;预先对半固态熔体进行一段时间的振动

然后保温

晶粒平均形状系数先降低

后升高;随着超声时间与间隔时间的比值增大

其他条件相同时

可制备出更细小圆整的晶粒。

Abstract

The effects of processing parameters on the microstructure of semi-solid ZL101 Al alloy slurry prepared by ultrasonic vibration were investigated

and the formation mechanism of the microstructure was approached.The liquid ZL101 aluminum was poured into a special-made metal cup with ultrasonic vibration or holding for some times at 630

60℃.The results indicate that the average grain size of α-Al phase is decreased to about 90μm with the average shape coefficient more than 0.5 with vibrating for 144s.The average shape coefficient of grain is firstly decreased then increased with holding for the vibrated semi-solid slurry.The finer and spheroidal grain in the microstructure can be observed with increasing the ratio of ultrasonic time to interval time in the other same condition.