The Effect of Frequency of Electromagnetic Vibration on the Micro Structure in Hypoeutectic Al-Si Alloy

Jung Pyung Choi; Young Min Hur; Tae Woon Nam; Eui Pak Yoon

doi:10.4028/www.scientific.net/SSP.116-117.213

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Influence of Experimental Parameters on Properties and Microstructure of the Steel X210CrW12 in the Semi-Solid State
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The Effect of Frequency of Electromagnetic Vibration on the Micro Structure in Hypoeutectic Al-Si Alloy
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HomeSolid State PhenomenaSolid State Phenomena Vols. 116-117The Effect of Frequency of Electromagnetic...

The Effect of Frequency of Electromagnetic Vibration on the Micro Structure in Hypoeutectic Al-Si Alloy

Abstract:

The structural control of Al-Si alloy, which was not studied among various electromagnetic processing of materials, was considered applying the alternating current and direct current magnetic flux density. The main aim of the present study is to investigate the effects of electromagnetic vibration on the macro and microstructure of Al-Si alloy in order to develop a new process of structural control in Al-Si alloy. When the electromagnetic vibration is conducted for changing the shape of primary aluminum, at low frequency (≤ 60Hz), the shape of dendrite is changed speroidal shape. When the electromagnetic vibration is conducted for changing the shape of eutectic silicon, the fact that a morphological change of the eutectic silicon from coarse platelet flakes to fine fiber shape is observed with EMV (Electro Magnetic Vibration) process at high frequency(≥ 500Hz).

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Periodical:

Solid State Phenomena (Volumes 116-117)

Pages:

213-216

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.116-117.213

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Online since:

October 2006

Authors:

Jung Pyung Choi, Young Min Hur, Tae Woon Nam, Eui Pak Yoon

Keywords:

Aluminium Alloy, Electromagnetic, Eutectic Silicon, Primary Aluminium, Vibration

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