Abstract
In order to fabricated high strength aluminum sheets with reasonable cost, several Al-Mg and Al-Zn-Mg-Cu alloy strips were successfully fabricated by the twin roll casting with a proper operating condition. The strips had good workability during subsequent warm/cold rolling processes due to the fine cast structure. The final annealed sheets have good mechanical properties at ambient temperature. The tensile strength and elongation of annealed Al-10wt%Mg sheet are about 400MPa and 30%, respectively. The tensile strength and yield strength of Al-Zn-Mg-Cu alloy sheet after the aging at paint baking condition (180oC × 30min) are 480MPa and 350MPa, respectively. The developed aluminum alloy sheets have a superior strength to commercial aluminum alloy sheets used for automotive body structures.
Published Version
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