High speed twin roll casting of recycled Al-3Si-0.6Mg strip

• Autorzy: Haga T. , Ikawa M. , Watari H. , Kumai S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Purpose of this paper is to clear the possibility of high speed roll casting of thin strip of recycled Al-3%Si-0.6%Mg alloy. Investigation of the mechanical properties of the roll cast recycled Al-3%Si-0.6%Mg strip was purpose, too. Design/methodology/approach: Method used in the present study was high speed twin roll caster and low temperature casting. These methods were used to realize rapid solidification, and increase of casting speed. Findings: Findings are that recycled Al-3%Si-0.6%Mg was could be cast at speed of 60 m/min. This strip was 3.1 mm-thick. As cast strip could be cold-rolled down to sheet of 1 mm-thick. 180 degrees bending test was operated on the sheet after T4 heat treatment and crack was not occured at the outer surface. This result means the roll cast recycled Al-3%Si-0.6%Mg can be used as the body of the auto mobile. Research limitations/implications: Research limitation is that the width of the strip was 100 mm and investigation of the properties was not enough for practical use. Wider strip must be cast using the twin roll caster of the size for production. Practical implications: Practical implications are as below. The economy sheet for the auto mobile can be produced by the high speed twin roll caster. Al-3%Si-0.6%Mg can be used both the casting and plastic forming. Therefore, fractionation in the recycle of the aluminium alloy will becomes easy. The content of Fe in the recycled aluminium alloy increases. Fe becomes intermetallic of AlSiFe. Si for Mg2Si becomes deficient. 3%Si was enough for Mg2Si if AlSiFe was precipitated. Al-3%Si-0.6%Mg is suitable for recycle. Originality/value: The economy sheet of Al-3%Si-0.6%Mg can be made by the high productivity of the HSTRC. The result of this report contributes to make the economy aluminium alloy sheet for the automobile.

Słowa kluczowe

EN

casting; high speed twin roll casting; sheet metal; Al-3%Si-0.6%Mg; HSTRC; recyclee

PL

odlewanie; prędkość odlewania; cienka blacha; Al-3%Si-0.6%Mg; HSTRC; odzysk

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 21, nr 1
• Strony: 7--12
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Haga T.

autor

Ikawa M.

autor

Watari H.

autor

Kumai S.

• Osaka Institute of Technology, 5-16-1 Omiya Asahiku Osakacity, 535-8585, Japan,

Bibliografia

• [1] S. Kumai, K. Suzuki, Y. Saito, T. Haga, Significance of rapidly solidified aluminum alloy strips for high quality recycling, Trans. MRSJ, 29 (2004) 1817-1822.
• [2] T. Haga, M. Ikawa. S. Kumai, A high speed twin roll caster for aluminum alloy thin strip, ibid., 29 (2004) 1823-1828.
• [3] T. Haga, M. Ikawa. S. Kumai, High-speed twin roll casting of thin aluminum alloy strips containing Fe impurities, Materials Ransactions 46 (2005) 2596-2601.
• [4] K. Suzuki, S. Kumai. Y. Saito. T. Haga, High-speed twin roll casting of Al-Mg-Si alloys with high Iron content, ibid., 46 (2005) 2602-2608.
• [5] T. Haga, M. Ikawa, S. Kumai, 6111 aluminum alloy strip casting using an unequal diameter twin roll caster, Journal of Materials Processing Technology 172 (2006) 271-276.
• [6] T. Haga, S. Suzuki, Roll casting of aluminum alloy strip by melt drag twin roll caster, Journal of Materials Processing Technology 118 (2001) 165-168.
• [7] T. Haga, S. Suzuki, Melt ejection twin roll caster for the strip casting of aluminum alloy, Journal of Materials Processing Technology 137 (2003) 92-95.
• [8] T. Haga, S. Suzuki, Strip casting of A5182 alloy using a melt drag twin roll caster, Journal of Materials Processing Technology 133 (2003) 103-107.
• [9] T. Haga, S. Suzuki, Study on high-speed twin-roll caster for aluminum alloys, Journal of Materials Processing Technology 143 (2003) 8-14.
• [10] T. Haga, K. Takahashi, M. Ikawa, H. Watari, Twin roll casting of aluminum alloy strips, Journal of Materials Processing Technology 153 (2004) 42-47.
• [11] T. Motegi, N. Ogawa, Continuous casting of semisolid Al-Si-Mg alloy, Proc. of the International Conference on Aluminum Alloys”TCAA-6” Toyohashi Japan, 1998, 297-326.
• [12] T. Haga, P. Kapranos, Billetless simple thixoforming process, Journal of Materials Processing Technology l30 (2002) 581-586.
• [13] T. Haga, P. Kapranos, Simple rheocasting process, ibid., 130 (2002) 594-598.
• [14] K. Suzuki, S. Kumai, Y. Yuichi, A. Sato, T. Haga, Refined Solidification structure and improved formability of A356 aluminum alloy plate produced using a high-speed twin roll strip caster, Materials Transactions 45 (2004) 403-405.
• [15] Aluminum International Today, Nov./Dec. (2002), 36.