Preparation of Semi-solid Aluminum Alloy Slurry by Ultrasonic Vibration

Wu Shusen; Zhao Junwen; Wan Li; Mao Youwu; An Ping

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Preparation of Semi-solid Aluminum Alloy Slurry by Ultrasonic Vibration
Vol. 29, Issue 1, Pages: 1-4(2009)
Published： 2009 ，
DOI：

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[1]吴树森,赵君文,万里,毛有武,安萍.高能超声波制备铝合金半固态浆料技术的研究[J].特种铸造及有色合金,2009,29(01):1-4+7.

Wu Shusen, Zhao Junwen, Wan Li, et al. Preparation of Semi-solid Aluminum Alloy Slurry by Ultrasonic Vibration. [J]. Special Casting & Nonferrous Alloys 29(1):1-4(2009)
[1]吴树森,赵君文,万里,毛有武,安萍.高能超声波制备铝合金半固态浆料技术的研究[J].特种铸造及有色合金,2009,29(01):1-4+7. DOI：

Wu Shusen, Zhao Junwen, Wan Li, et al. Preparation of Semi-solid Aluminum Alloy Slurry by Ultrasonic Vibration. [J]. Special Casting & Nonferrous Alloys 29(1):1-4(2009) DOI：

摘要

研究了高能超声波制备半固态金属浆料的技术

包括制备工艺流程、非枝晶组织的生成机理

以及典型铝合金半固态浆料的制备工艺与组织。结果表明

采用超声波功率为1.2kW、频率为20kHz的钛合金振动头直接振动金属液的条件下

用0.5min左右的时间制备出铝合金半固态浆料。由于高能超声波在金属熔体中产生的声空化和声流的共同作用

制备出细小、圆整的非枝晶颗粒的半固态浆料。所制备的A390浆料在无P变质条件下初晶Si可细化到20μm左右;ZL101浆料的初晶α-Al非枝晶组织较圆整、细小

晶粒尺寸为80μm左右。

Abstract

Semi-solid aluminum alloy slurry by ultrasonic vibration was prepared

and processing parameters

formation mechanism of non-dendrite and microstructure of semi-solid aluminum alloy were investigated. The results indicate that the semi-solid aluminum alloy slurry with fine spheroidal structure can be successfully prepared by directly vibrating liquid aluminum alloy using Ti alloy vibrator with ultrasonic power of 1.2kW at 20kHz as a result of cavitation effects and acoustic streaming effects. Grain size of primary Si in the prepared semi-solid A390 alloy slurry can be refined to approximately 20μm without P modification. Fine spheroidal primary α-Al phase with 80μm in diameters can be observed in semi-solid ZL101 alloy slurry prepred by ultrasonic vibratior.