An al-zn-mg-cu alloy

Details An al-zn-mg-cu alloy An al-zn-mg-cu alloy

C - Chemistry, Metallurgy

22

C

C22C 21/10 (2006.01) C22F 1/053 (2006.01)

Patent

CA 2519390

The present invention relates to an aluminium alloy product consists essentially of, in weight %, about 6.5 to 9.5 zinc (Zn), about 1.2 to 2.2 % magnesium (Mg), about 1.0 to l.9 % copper (Cu), preferable (0.9Mg-0.6) <= Cu <= (0.9Mg+0.05), about 0 to 0.5% zirconium (Zr), about 0 to 0.7% scandium (Sc), about 0 to 0.4% chromium (Cr), about 0 to 0.3% hafnium (Hf), about 0 to 0.4% titanium (Ti), about 0 to 0.8% manganese (Mn), the balance being aluminium (Al) and other incidental elements. The invention relates also to a method of manufacturing such as alloy.

La présente invention concerne un alliage d'alluminium constitué essentiellement, en proportions massiques d'environ 6,5 à 9,5 % de zinc (Zn), d'environ 1,2 à 2,2 % de magnésium (Mg), d'environ 1,0 à 1,9 % de cuivre (Cu), de préférence (0,9Mg-0,6) = Cu = (0,9Mg+0,05), d'environ 0 à 0,5 % de zirconium (Zr), d'environ 0 à 0,7 % de scandium (Sc), d'environ 0 à 0,4 % de chrome (Cr), d'environ 0 à 0,3 % de hafnium (Hf), d'environ 0 à 0,4 % de titane (Ti), d'environ 0 à 0,8 % de manganèse (Mn), le complément à 100 % étant le fait de l'aluminium (Al) et d'autres éléments à l'état de traces. L'invention concerne également un procédé de fabrication d'un tel alliage.

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