Press Forming Technology Using Superplastic Deformation for Mg Alloy Sheet

Abstract:

Article Preview

The square-cylindrical cup of AZ31 Mg alloy with a depth of 50mm and a width of 50 mm was successfully deep drawn from a rolled sheet with a thickness of 0.5 mm using a hydraulic press machine with a capacity of 60 tons. The blank was heated between the die and the blank holder kept in a temperature of 300 oC .The forming time was about 3 seconds. The fine-grained microstructure was observed at the corner with a sever strain. The grain refinement caused by the dynamic recrystallization contributed to generate high strain-rate superplasticity.

Info:

Periodical:

Materials Science Forum (Volumes 488-489)

Edited by:

W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo

Pages:

571-574

Citation:

H. Fujii et al., "Press Forming Technology Using Superplastic Deformation for Mg Alloy Sheet", Materials Science Forum, Vols. 488-489, pp. 571-574, 2005

Online since:

July 2005

Export:

Price:

$38.00

[1] A. Yamashita, Z. Horita, and T. G. Langdon: Mater. Sci. and Engr. Vol. A300 (2001), p.142.

[2] A. A. Luo, and A. K. Sachdev: Magnesium Technology 2004, ed. by A. A. Luo, TMS, 2004, p.79.

[3] Y. Chino, K. Kishihara, K. Shimojima, H. Hosokawa, Y. Yamada, Cui'e Wen, H. Iwasaki and M. Mabuchi: Mater. Trans. Vol. 43 (2002), p.2437.

[4] W. J. Liu et al., Magnesium Technology 2004, ed. by A. A. Luo, TMS, 2004, p.73. At the corner At the straight 10 mm from the bottom 10 µm Average grain size.

[8] 0 µm.

[12] 5 µm.

[5] 0 µm.

[6] 0 µm 20 mm 40 mm.

[5] 6 µm 4. 5 µm Fig. 6 Microstructures of the cup at the straight and the corner.