Constellium Issoire

Pechiney Rhenalu

Alcan Rhenalu

Other

Aluminium Pechiney

Societe Metallurgique De Gerzat

Constellium France

Christophe Sigli

Timothy Warner

Bernard Bes

Pierre Sainfort

Armelle Danielou

Guy-Michel Raynaud

Jean-Francois Verdier

Gaelle Pouget

Ravi Shahani

Phlilippe Lassince

Herve Ribes

Philippe Jarry

Jean-Christophe Ehrstrom

Frank Eberl

Christine Henon

Cedric Gasqueres

Laurent Cottignies

Bernard Bés

Gaëlle Pouget

Hervé Ribes

Alireza Arbab

Claudine Strippoli Gerin

Ricky Whelchel

Cédric Gasqueres

Extrados structural element made from an aluminum, copper and lithium alloy and method for manufacturing same. An alloy with composition (in wt %) 4.2-5.2 Cu, 0.9-1.2 Li, 0.1-0.3 Ag, 0.1-0.25 Mg, 0.08-0.18 Zr, 0.01-0.15 Ti, an Fe and Si content level less than or equal to 0.1% each, and other element with content level less than or equal to 0.05% each and 0.15% in total, is poured, homogenized, deformed hot, placed in a solution at a temperature of at least 515&#xb0; C., pulled from 0.5 to 5% and annealed. The combination of magnesium, copper and manganese content with the temperature in solution can reach an advantageous elasticity under compression limit. Products having a thickness of at least 12 mm have, in the longitudinal direction, an elasticity under compression limit of at least 645 MPa and an elongation of at least 7%.

Extrados structural element made from an aluminium copper lithium alloy

The invention relates to a wrought product such as an extruded, rolled and/or forged aluminum alloy-based product, comprising, in weight %: Cu: 3.0-3.9; Li: 0.8-1.3; Mg: 0.6-1.0; Zr: 0.05-0.18; Ag: 0.0-0.5; Mn: 0.0-0.5; Fe+Si&#x2264;0.20; Zn&#x2264;0.15; at least one element from among: Ti: 0.01-0.15; Sc: 0.05-0.3; Cr: 0.05-0.3; Hf: 0.05-0.5; other elements &#x2264;0.05 each and &#x2264;0.15 total, remainder aluminum. The invention also relates to the process for producing said product. The products according to the invention are particularly useful in the production of thick aluminum products intended for producing structural elements in the aeronautical industry.

Aluminum-copper-lithium alloy with improved mechanical strength and toughness

A method for producing a rolled product 0.5 to 10 mm thick made from an aluminum alloy comprising, in particular, copper and lithium, in which, after solution annealing and quenching, a short heat treatment is carried out in which the sheet reaches a temperature of between 145&#xb0; C. and 175&#xb0; C. for 0.1 to 45 minutes, the speed of heating being between 3 and 600&#xb0; C./min. The sheet obtained at the end of the method according to the invention has high corrosion resistance and is capable of being shaped for producing a structural element for an aircraft, in particular an aircraft fuselage skin.

Method for transforming Al&#x2014;Cu&#x2014;Li alloy sheets improving formability and corrosion resistance

The disclosure provides for wrought products made of Al&#x2014;Cu&#x2014;Mg aluminum alloy composed as follows, as a percentage by weight, Cu: 2,6-3.7; Mg: 1.5-2.6, Mn: 0.2-0.5; Zr: &#x2266;0.16; Ti: 0.01-0.15; Cr&#x2266;0.25; Si&#x2266;0.2; Fe&#x2266;0.2; other elements &#x3c;0.05 the rest aluminum; with Cu&#x3e;&#x2212;0.9(Mg)+4.3 and Cu&#x3c;&#x2212;0.9(Mg)+5.0; where Cu=Cu&#x2212;0.74(Mn&#x2212;0.2)&#x2212;2.28 Fe and Mg=Mg&#x2212;1.73(Si&#x2212;0.05) for Si&#x2267;0.05 and Mg=Mg for Si&#x3c;0.05 and their manufacturing process.

High-temperature efficient aluminum copper magnesium alloys

An aluminum alloy comprising 2.1 to 2.8 wt. % Cu, 1.1 to 1.7 wt. % Li, 0.1 to 0.8 wt. % Ag, 0.2 to 0.6 wt. % Mg, 0.2 to 0.6 wt. % Mn, a content of Fe and Si less or equal to 0.1 wt. % each, and a content of unavoidable impurities less than or equal to 0.05 wt. % each and 0.15 wt. % total, and the alloy being substantially zirconium free.

High fracture toughness aluminum-copper-lithium sheet or light-gauge plates suitable for fuselage panels

An aluminum-based welding filler wire is made with an aluminum alloy that contains between 0.1 and 6 wt. % titanium, including one portion in the form of TiBparticles, TiC particles, or a combination thereof, and another portion in the form of free titanium. The filler wire can be used in welding aluminum-based materials.

Filler wire for welding aluminum alloys

A low density aluminum based alloy useful in aircraft structure for fuselage sheet or light-gauge plate applications which has high strength, high fracture toughness and high corrosion resistance, comprising 2.7 to 3.4 weight percent Cu, 0.8 to 1.4 weight percent Li, 0.1 to 0.8 weight percent Ag, 0.2 to 0.6 weight percent Mg and a grain refiner such as Zr, Mn, Cr, Sc, Hf, Ti or a combination thereof, the amount of which being 0.05 to 0.13 wt. % for Zr, 0.1 to 0.8 wt. % for Mn, 0.05 to 0.3 wt. % for Cr and Sc, 0.05 to 0.5 wt. % for Hf and 0.05 to 0.15 wt. % for Ti. The amount of Cu and Li preferably corresponds to the formula Cu(wt. %)+5/3 Li(wt. %)&#x3c;5.2.

High fracture toughness aluminum-copper-lithium sheet or light-gauge plate suitable for use in a fuselage panel

The invention relates to alloys and associated products which are laminated, extruded or forged in Al&#x2014;Zn&#x2014;Mg&#x2014;Cu alloy. Alloys of the invention generally comprise (in mass percentage):

Al-Zn-Mg-Cu alloys and products with improved ratio of static mechanical characteristics to damage tolerance

A process for manufacturing a hollow pressure vessel, in which a billet is cast from an alloy with a composition in % by weight, Zn&equals;6.25-8.0, Mg&equals;1.2-2.2, Cu&equals;1.7-2.8, Fe<0.20, Fe&plus;Si<0.40, at least one of the elements selected from the group consisting of Cr, Zr, V, Hf and Sc in an amount of 0.05-0.3, and other elements <0.05 each and <0.15 total. The cast billet is homogenized with a temperature profile such that metal temperature is slightly less than incipient melting temperature at all times, cooled to ambient temperature and softening annealed for a duration of 20 to 40 h between 200 and 400&deg; C. with cooling at a rate of less than 50&deg; C./h down to a temperature of below 100&deg; C., resulting in a billet hardness <54 HB. A slug is cut out of the softened billet, cold or slightly warm extruded with an extrusion start temperature <300&deg; C., to form a casing which is necked, solution heat treated at a temperature slightly below the incipient melting temperature, for a duration sufficient to obtain an absolute value of specific energy associated with a DTA thermogram signal of less than 3 J/g, quenched in cold water, and aged at between 100 and 200&deg; C. for a duration between 5 and 25 h.

Manufacturing process for a hollow pressure vessel made of AlZnMgCu alloy

Thick alznmgcu alloy products with improved properties

A rolled, forged or extruded AlZnMgCu alloy product, used to manufacture structural elements for aircraft, particularly wing spars. The product is greater than 60 mm thick, and has a composition (% by weight):

Thick alZnMgCu alloy products with improved properties

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Grenoble, France

Christophe Sigli