C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
C22F 1/057 (2006.01) B32B 15/01 (2006.01) C22C 21/16 (2006.01)
Patent
CA 2354137
The invention relates to a Product comprising an aluminium base alloy consisting of (in weight %): Cu3.8-4.9, Mg 1.2-1.8, Mn 0.1-0.9, Fe max. 0.12, Si max. 0.10, Ti max. 0.15, Zn max. 0.20, Cr max. 0.10, impurities each max. 0.05, total max. 0.15, balance aluminium, said product having a minimum L-0.2 % yield strength of 300 MPa or more, a minimum LT-0.2 % yield strength of 270 MPa a minimum T-L fracture toughness KC(~) of 100 MPa..sqroot.m or more for a 700 mm wide CCT-panel, and having in both L/ST- and LT/ST-sections an average grain size of at least 6 according to ASTM E-112. Further the invention relates to a method for the manufacturing of such a product.
L'invention concerne un produit contenant un alliage à base d'aluminium comprenant (exprimés en pourcentage en poids): Cu 3,8-4,9, Mg 1,2-1,8, Mn 0,1-0,9, Fe max 0,12, Si max 0,10, Ti max 0,15, Zn max 0,20, Cr max 0,10, impuretés chacun max 0,05, total max 0,15, le solde étant constitué d'aluminium, ledit produit ayant une limite d'élasticité minimum à L-0,2 % de 300 MPa ou davantage, une limite d'élasticité minimum à LT-0,2 % de 270 MPa, une ténacité à la rupture T-L minimum KC(ao) de 100 MPa. 2ROOT m ou davantage pour un panneau CCT d'une largeur de 700 mm, et présentant dans les deux parties L/ST- et LT/ST une grosseur moyenne du grain d'au moins 6 selon ASTM E-112. De plus, l'invention concerne un procédé de production de ce produit.
Haszler Alfred Johann Peter
Heinz Alfred Ludwig
Corus Aluminium Walzprodukte Gmbh
Ridout & Maybee Llp
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