Strip Casting of Al-4.7%Mg with Impurity Fe Using a Single Roll Caster with a Scraper

Abstract:

Fe was added to Al-4.7%Mg to make model alloys of recycled Al-Mg alloy. The effect of Fe addition on the mechanical properties of the Al-4.7%Mg strip cast using a single-roll caster equipped with a scraper was investigated. The added Fe content was 0.2, 0.4, 0.6, and 0.8%. The as-cast strip cast at 30 m/min was cold rolled down to a thickness of 1 mm thick annealed to conduct a tensile test and a cup test. The as-cast strip could be cold rolled without cracking. The tensile stress and the 0.2% proof stress were only slightly affected by the addition of Fe. The elongation gradually decreased as the Fe content increased. When the Fe content was 0.8%, the elongation in the casting direction was 27.7%. The limiting drawing ratio did not deteriorate until the Fe content was 0.4%. When the Fe content was 0.4% and 0.8%, the limiting drawing ratios were 2.0 and 1.7, respectively.

• Periodical: Materials Science Forum (Volume 1073)
• Pages: 115-122
• DOI: https://doi.org/10.4028/p-1mm0bh
• Online since: October 2022
• Authors: Toshio Haga*, Keisuke Oida, Kazuki Yamazaki, Hisaki Watari, Shinichi Nishida
• Keywords: Al-Mg Alloy, Degradation Prevention, Impurity Fe, Recycle, Unequal Diameter Twin Roll Caster

References

[1] T. Minoda, H. Uchida, K. Shibue, H. Yoshida, Influence of iron content on mechanical properties of Al-Mb-Si alloy sheets, Journal of Japan Institute of Light Metals Vol.53(2003) 523-527.

DOI: 10.2464/jilm.53.523

[2] T. Minoda, M. Asano, Tendency of Researches on Bending of Automotive Aluminum Alloy Sheet, Journal of the Japan Society for Technology of Plasticity Vol. 46(2005) 119-123.

[3] T. Inaba, Aluminum Alloy sheet for Automotive Body Panel, KOBE STEEL Engineering Reports Vol. 52(2002) 79-83.

[4] T. Inaba, H. Yamashita, Y. Takebayashi, T. Minoura, S. Sasabe, Aluminum Product Application Technologies for Automobiles, KOBE STEEL Engineering Reports Vol. 55(2005) 66-74.

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

DOI: 10.2320/matertrans.46.2596

[6] K.Suzuki, S.Kumai, Y.Saito, T.Haga, High-speed twin-roll strip casting of Al-Mg-Si alloys with high iron content, Materials Transactions Vol.46(2005)2602-2608.

DOI: 10.2320/matertrans.46.2602

[7] T.Haga, M.Ikawa, H.Watari, K.Suzuki, S.Kumai, 6111 aluminum alloy strip casting using an unequal diameter twin roll caster, Journal of Materials Processing and Technology, Vol.172(2006)271-276.

DOI: 10.1016/j.jmatprotec.2005.10.007

[8] T.Haga，K.Komeda，K.Matsuoka，S.Kumai，H.Watari, Roll casting of recycled AA5182, Applied Mechanics and Materials, Vol.121-126(2012)4667-4670.

DOI: 10.4028/www.scientific.net/amm.121-126.4667

[9] T. Haga, K. Yamazaki, H. Watari, S. Nishida, Reduction of Surface Cracks at Al-Mg Alloy Strip Surface Cast by Unequal Diameter Twin Roll Caster, Materials Science Forum Vol. 1007(2020) 6-11.

DOI: 10.4028/www.scientific.net/msf.1007.6

[10] T.Haga，K.Akitsu，K. Kamakura, S.Kumai，H.Watari, Strip casting using a single roll caster equipped with a scraper, Journal of Achievements in Materials and Manufacturing Engineering, Vol.55(2012)26-32.

DOI: 10.4028/www.scientific.net/kem.504-506.1243

[11] T.Haga, 600 mm-Wide Strip Casting Using Single Roll Caster Equipped with Scraper, Key Engineering Materials, Vol. 805(2019)43-49.

DOI: 10.4028/www.scientific.net/kem.805.43

[12] Toshio Haga, Kosuke Tsukuda, Keisuke Oida, Hisaki Watari and Shinichi Nishida, Casting of Al-Mg Strip Using Single Roll Caster Equipped with a Scrape, Key Engineering Materials, Vol. 880(2021)49-56.

DOI: 10.4028/www.scientific.net/kem.880.49

[13] Y. Li, C. He, J. Li, Z. Wang, D. Wu, G. Xu: A novel approach to improve the microstructure and mechanical properties of Al-Mg-Si aluminum alloys during twin-roll casting, Metals 13,1713(2020).

DOI: 10.3390/ma13071713

[14] 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

[15] S.Hamers, D.Smith, C.Romanowski, G.Yildizbayrak, B.Taraglio, Twin roll casting of aluminum at 2.5mm gauge. Production experience and process improvement, Light Met. (1999)931-937.