Browse > Article

A Study on the Structural Controlling of Al-Si Alloy by Using Electromagnetic Vibration  

Choi, Jung-Pyung (Research Institute of Steel Processing & Application (RISPA) and Division of Materials Science and Engineering, Hanyang Univ.)
Kim, Ki-Bae (Advanced Materials Research Center, Div. of Materials, KIST)
Nam, Tae-Woon (RISPA and Department of Metallurgical and Materials Science, Hanyang Univ.)
Yoon, Eui-Pak (Research Institute of Steel Processing & Application (RISPA) and Division of Materials Science and Engineering, Hanyang Univ.)
Publication Information
Journal of Korea Foundry Society / v.26, no.5, 2006 , pp. 205-210 More about this Journal
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 and the improvement of the mechanical properties is achieved with EMV (Electro Magnetic Vibration) process at high frequency(>500Hz).
Keywords
Aluminum alloy; Electromagnetic; Eutectic silicon; Vibration; Primary aluminum;
Citations & Related Records
연도 인용수 순위
  • Reference
1 L. F. Mondolfo : 'Aluminum Alloy: Structure and Properties', Butterworth & Co., London, (1976)
2 B. M. Closset and J. E. Gruzleski : Metall. Trans. A, 13A, (1982) 945
3 B. E. Warren and E. P. Warekois; Acta Metall., 3 (1955) 473   DOI   ScienceOn
4 J. P. Choi, et al.:Mat. Sci. Forum Vols. 449-452 (2005) 157
5 R. S. Richards and Rostoker : The Thirty-Seventh Annual Convection of the Society, held in Philadelphia, October (1955) 17
6 J. E. Gruzleski and B. M. Closset: 'The Treatment of Liquid Aluminum-Silicon Alloys', American Foundaryrnen's Society, Inc. Des Plaines, Illinois, U.S.A., (1990) 19
7 J. B. Andrews and M. V. C. Seneviratne : AFS Transactions, 92 (1984) 209