The Forming Process of Magnesium Alloy for Japanese Home Electric Components

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Magnesium alloys have replaced resins as a material for the components of electronic products such as cell phone and notebook personal computer mainly, because of their lightness and rigidity. Thin walls, a complicated shape, and high appearance quality are all needed in the external parts. Die-casting and injection molding are the main method of manufacturing magnesium alloy parts. The optimal cast conditions and mold design have been investigated in order that a few defects such as surface cracks and mold cavities in casting parts would be reduced. Instead of cast, plastic forming technologies such as warm drawing and hot forging have been developed to form thinner walls and less defects. Plastic formability of magnesium alloy in hot working is dependent on a grain size of material. The material with fine grains has advantage of being formed at high strain rate. The characteristics of forming processes of magnesium parts for Japanese home electric appliances are compared in the viewpoint of quality, cost, and productivity.

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Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

509-512

Citation:

A. Takara and K. Higashi, "The Forming Process of Magnesium Alloy for Japanese Home Electric Components", Materials Science Forum, Vols. 475-479, pp. 509-512, 2005

Online since:

January 2005

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$38.00

[1] T. Ito: Magnesium Manual, (Japan Magnesium Ass., Tokyo 1999), p.133.

[2] S. Kamado and Y. Kojima: Materia Japan, Vol. 38 (1999), p.285.

[3] K. Saito: Materia Japan, Vol. 38 (1999), p.321.

[4] Y. Nishikawa,K. Matsumura,A. Takara,A. Isomi and T. Soyama: Materia Japan, Vol. 39(2000), p.278.

DOI: https://doi.org/10.2320/materia.39.278

[5] N. Chvorinov: Foundry Trade Journal, Vol. 10(1939), p.95.

[6] H. Sato: Magnesium Technical Manual, (Japan Magnesium Ass., Tokyo 2000) , p.105.

[7] T. Shimizu: Alutopia, Vol. 31, No. 4 (2001), p.41.

[8] M. Mabuchi, Y. Chino and H. Iwasaki: Mater. Trans. Vol. 43 (2003), p.490.

[9] S. Hama and F. Watanabe: J. Japan Inst. Light Metals, Vol. 51 (2001), p.509.

[10] R. S. Mishra, T. R. Bieler and A. K. Mukherjee: Acta Metall. Mater. Vol. 43 (1995), p.877.

[11] H. Watanabe, T. Mukai, M. Kohzu, S. Tanabe and K. Higashi: Acta Mater. Vol. 47(1999), p.3753.

[12] H. Watanabe, H. Hosokawa, T. Mukai and T. Aizawa: Materia Japan Vol. 39 (2000), p.347.

[13] H. J. Frost and M. F. Ashby: Deformation-mechanism Maps, (Pergamon Press, Oxford, 1982)p.44.