Aircraft structural member made of an Al-Cu-Mg alloy

Details Aircraft structural member made of an Al-Cu-Mg alloy Aircraft structural member made of an Al-Cu-Mg alloy

2011-08-09

2011-08-09

King, Roy (Department: 1733)

Metal treatment

Stock

Age or precipitation hardened or strengthened

C148S693000, C148S690000, C420S532000

Reexamination Certificate

active

07993474

ABSTRACT:
The invention relates to a work-hardened product, particularly a rolled, extruded or forged product, made of an alloy with the following composition (% by weight): Cu 3.8-4.3; Mg 1.25-1.45; Mn 0.2-0.5; Zn 0.4-1.3; Fe<0.15; Si<0.15; Zr≦0.05; Ag<0.01, other elements <0.05 each and <0.15 total, remainder Al, treated by dissolution, quenching and cold strain-hardening, with a permanent deformation of between 0.5% and 15%, and preferably between 1.5% and 3.5%. Cold strain-hardening can be achieved by controlled tension and/or cold transformation, for example rolling, die forging or drawing. This cladded metal plate type product is a suitable element to be used as aircraft fuselage skin.

REFERENCES:
patent: 3333990 (1967-08-01), Brown et al.
patent: 3826688 (1974-07-01), Levy
patent: 4336075 (1982-06-01), Quist et al.
patent: 5213639 (1993-05-01), Colvin et al.
patent: 5376192 (1994-12-01), Cassada, III
patent: 5512112 (1996-04-01), Cassada, III
patent: 5593516 (1997-01-01), Cassada, III
patent: 5630889 (1997-05-01), Karabin
patent: 5652063 (1997-07-01), Karabin
patent: 6077363 (2000-06-01), Heymes et al.
patent: 6562154 (2003-05-01), Rioja et al.
patent: 0 473 122 (1992-03-01), None
patent: 0 731 185 (1996-09-01), None
patent: 1 045 043 (2000-10-01), None
patent: 0731185 (1996-09-01), None
patent: 1170394 (2002-01-01), None
patent: 1 133 113 (1968-11-01), None
patent: 03236441 (1991-10-01), None
Ohsaki, S., et al., Fracture Toughness of Stress Corrosion Cracking of Aluminum-Lithium Alloys 2090 and 2091, Corrosion Science, vol. 38, No. 5, pp. 793-802, 1996.
Hatch, J.E., Properties and Physical Metallurgy, American Society for Metals, pp. 1-5, May 1984.

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