Process for producing strips of superplastic aluminum alloys

Details Process for producing strips of superplastic aluminum alloys Process for producing strips of superplastic aluminum alloys

C - Chemistry, Metallurgy

22

F

148/10

C22F 1/047 (2006.01) C22C 21/06 (2006.01)

Patent

CA 1206074

TITLE OF THE INVENTION: PROCESS FOR PRODUCING STRIPS OF SUPERPLASTIC ALUMINUM ALLOYS ABSTRACT OF THE DISCLOSURE: Described herein is a process for producing strips of superplastic aluminum alloys comprising the steps of continuously casting and rolling a molten aluminum alloy containing 4.0 to 6.0 % by weight of magnesium, 0.4 to 1.5 % by weight of manganese, 0.05 to 0.2 % by weight of chromium and less than 0.50 % by weight of silicon, thereby obtaining a cast strip of 3 to 20 mm in thickness, and after subjecting the thus obtained cast strip to homogenizing at a temperature of 420 to 530°C, subjecting the homogenized strip to the former step of cold rolling and intermediate annealing and then subjecting the intermediately annealed strip to the latter step of cold rolling until the reduction ratio reaches to a value of not less than 60 %.

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