Continuous Casting of Magnesium Billets for Semi-Solid Processing

Abstract:

Article Preview

Semi-solid processing is recognized as an attractive alternative method for the near net-shape production of engineering components. Although there has been a significant progress in semi-solid processing of aluminum alloys, very limited information is available on semi-solid processing of magnesium alloys, except for the thixomolding process. Continuous casting process has been utilized to produce the billets with the desirable cross-section at a reduced production cost for many metals, such as steel, copper and aluminum alloys. It has also been commercially utilized to produce the aluminum billets with non-dendritic microstructure for subsequent thixocasting process. However, continuous casting of magnesium billets for semi-solid processing has not yet been commercialized due to the difficulties involved in casting of magnesium alloys. In the present study, a continuous casting process has been developed for the production of the cylindrical billets of magnesium alloys for the subsequent thixocasting process. In order to obtain the desired non-dendritic microstructure with an excellent degree of homogeneity both in microstructure and composition, an electromagnetic stirring system has been utilized. A continuous casting process has been proven to be an efficient way to produce the high quality billets of magnesium alloys for semi-solid processing. A prototype air conditioner cover was produced using the continuously cast billets of AZ91 alloy.

Info:

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:

517-520

Citation:

H. C. Jung and K. S. Shin, "Continuous Casting of Magnesium Billets for Semi-Solid Processing", Materials Science Forum, Vols. 475-479, pp. 517-520, 2005

Online since:

January 2005

Export:

Price:

$38.00

[1] D.H. Kim, S.J. Song, H. Park and K.S. Shin: Met. Mater. Vol. 3 (1997), p.211.

[2] J.W. Kim, D.H. Kim, C.D. Yim and K.S. Shin: J. Kor. Inst. Met. Mater. Vol. 35 (1997), p.1446.

[3] J.J. Kim, D.H. Kim, K.S. Shin and N.J. Kim: Scripta mater. Vol. 41 (1999), p.333.

[4] C.D. Lee and K.S. Shin: Met. Mater. -Int. Vol. 9 (2003), p.21.

[5] S.C. Park, J.D. Lim, D. Eliezer and K.S. Shin: Mater. Sci. Forum Vol. 419-422 (2003), p.159.

[6] Y.J. Ko, C.D. Yim, J.D. Lim and K.S. Shin: Mater. Sci. Forum Vol. 419-422 (2003), p.851.

[7] C.D. Lee: Met. Mater. -Int. Vol. 8 (2002), p.295.

[8] M.C. Flemings: Metall. Trans. A Vol. 22A (1991), p.957.

[9] D.S. Shin, J.I. Lee, E.P. Yoon and H.I. Lee: Met. Mater. Vol. 3 (1997), p.159.

[10] P.A. Joly and R. Mehrabian: J. Mater. Sci. Vol. 11 (1976), p.495.

[11] L.S. Turng and K.K. Wang: J. Mater. Sci. Vol. 26 (1991), p.2173.

[12] C.D. Yim, H.D. Kim and K.S. Shin: In Proc. of the Europische Forschungsgemeinschaft Magnesiumguss e.V., Aalen, Germany, (1999), p.333.

Fetching data from Crossref.
This may take some time to load.