Al-cu-mg alloy suitable for aerospace application

Details Al-cu-mg alloy suitable for aerospace application Al-cu-mg alloy suitable for aerospace application

C - Chemistry, Metallurgy

22

C

C22C 21/16 (2006.01) C22F 1/057 (2006.01)

Patent

CA 2627070

An aluminium alloy wrought product having high strength and high fracture toughness and high resistance to intergranular corrosion, the alloy including in weight %: Cu 4.1 - 5.5%; Mg 0.30 - 1.6%; Mn 0.15 - 0.8%; Ti 0.03 - 0.4%; Cr 0.05 - 0.4%; Ag < 0.7%; Zr < 0.2%; Fe < 0.20%, preferably < 0.15%, more preferably < 0.1 %; Si < 0.20%, preferably < 0.15%, more preferably < 0.1 %; and the balance being aluminium and other impurities or incidental elements each < 0.05%, total < 0.15%.

L~invention concerne un produit moulé en un alliage d~aluminium présentant une grande résistance, une grande ténacité à la rupture et une grande résistance à la corrosion intergranulaire, l~alliage comprenant, en % en poids : Cu 4,1 - 5,5 % ; Mg 0,30 - 1,6 % ; Mn 0,15 - 0,8 % ; Ti 0,03 - 0,4 % ; Cr 0,05 - 0,4 % ; Ag < 0,7 % ; Zr < 0,2 % ; Fe < 0,20 %, de préférence < 0,15 %, plus préférablement < 0,1 % ; Si < 0,20 %, de préférence < 0,15 %, plus préférablement < 0,1 % ; le reste étant de l~aluminium et d~autres impuretés ou éléments accidentels, chacun < 0,05 %, au total < 0,15 %.

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