Roll Casting and Die Casting of Si-Added Al-Mg Alloy

Abstract:

Si ranging from 0.2 mass% to 2.0 mass% was added to Al-5%Mg alloy (5182) and strip was cast by a vertical type high-speed twin-roll caster at a speed of 80 m/min. The as-cast strip was cold-rolled down to 1 mm thickness and annealed. The mechanical properties were investigated using cup tests and tension tests. The limiting draw ratio (LDR) of the 5182 alloy was 2.0 and the LDR became smaller as the Si content increased. When the Si content was 2.0 mass%, the LDR was 1.8, which shows that Si-added 5182 can be used for sheet forming, if the Si content is less than 2.0 mass%. The tensile strength and elongation were almost constant when the Si content was less than 1 mass%, but decreased at 2.0 mass% Si. However, the elongation was greater than 20% at 2.0 mass% Si. For die casting, 2.0 mass% Si was determined as the appropriate content from the results of the tension tests. When the Si content is in the range from 1.0 mass% to 2.0 mass%, then the Si added Al-5%Mg has the ability to be used for both die casting and sheet forming.

• Periodical: Materials Science Forum (Volume 1007)
• Pages: 12-17
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1007.12
• Online since: August 2020
• Authors: Toshio Haga*, Shinichiro Imamura, Hiroshi Fuse, Hisaki Watari, Shinichi Nishida
• Keywords: Al-Mg Alloy, Die Casting, Roll Casting, Si Content, Uni-Alloy

References

[1] http://rheinfelden-alloys.eu/en/alloys/magsimal/.

[2] T. Haga, K. Takahashi, H. Watari, Semisolid strip casting using a vertical type twin roll caster, Mater. Sci. Forum, 426 (2003) 477-482.

DOI: 10.4028/www.scientific.net/msf.426-432.477

[3] T. Haga, K. Takahashi, M. Ikawa, H. Watari, A vertical type twin roll caster for aluminum alloy strip, J. Mater. Proc. Technol. 140(1-3) (2003) 610-615.

DOI: 10.1016/s0924-0136(03)00835-5

[4] T. Haga, S. Suzuki, Study on a high-speed twin roll caster for aluminum alloys, J. Mater. Proc. Technol. 143 (2003) 895-900.

DOI: 10.1016/s0924-0136(03)00400-x

[5] T. Haga, M. Ikawa, S. Kumai, A high speed twin roll caster for aluminum alloy thin strip, Trans. Mater. Res. Soc. Jap. 29(5) (2004) 1823-1828.

DOI: 10.1299/jsmeintmp.2005.2_5

[6] T. Haga, M. Ikawa, H. Watari, K. Suzuki, S. Kumai, High-speed twin roll casting of thin aluminum alloy strips containing Fe impurities, Mater. Trans. 46(12) (2005) 2596-2601.

DOI: 10.2320/matertrans.46.2596

[7] R. Cook, P. G. Groock, P. M. Thomas, D. V. Edmonds, J. D. Hunt, Development of the twin-roll casting process, J. Mater. Process. Technol. 55(2) (1995) 76-84.

DOI: 10.1016/0924-0136(95)01788-7

[8] M. Cortes, Pechiney- Jumbo 3 CM super ((R)) the new demands of thin strip casting, Light Met. (1995) 1161-1164.

[9] B. Taraglio, C. Romanowski, Thin-gage/high-speed roll casting technology for foil production, Light Met. (1995) 1165-1182.

[10] A. I. Nussbaum, Three-state-of-the-art Thin –gage high-speed roll caster for aluminum alloy sheet products, Light Met. Age, 12 (1996) 8-19.

[11] O. Daaland, A. B. Espedal, M. L. Nedreberg, I. Alvestad, Thin gage twin-roll casting, process capabilities and product quality, Light Met. (2016) 989-996.

DOI: 10.1007/978-3-319-48228-6_125