Constellium Issoire

Constellium France

Pechiney Rhenalu

Alcan Rhenalu

Frank Eberl

Bernard Bes

Fabrice Heymes

Juliette Chevy

Timothy Warner

Jean-Christophe Ehrstrom

Christophe Sigli

Christian Barthelemy

Gaelle Pouget

Julien Boselli

Lionel Peguet

Jean-sylvestre Safrany

Gaëlle Pouget

Laurent Cervi

Michelle Salvia

Joêl Maussion

Thibaud Bret

Stephane Jambu

Joel Maussion

Maria Belen Davo Gutierrez

Joël Maussion

Stéphane Jambu

Christrian Barthelemy

The invention concerns a process to manufacture a flat-rolled product, notably for the aeronautic industry containing aluminum alloy, in which, notably a flattening and/or stretching is performed with a cumulated deformation of at least 0.5% and less than 3%, and a short heat-treatment is performed in which the sheet reaches a temperature between 130&#xb0; C. and 170&#xb0; C. for a period of 0.1 to 13 hours. The invention notably makes it possible to simplify the forming process of fuselage skins and to improve the balance between static mechanical strength properties and damage tolerance properties.

Transformation process of Al&#x2014;Cu&#x2014;Li alloy sheets

The invention relates to a plate with a thickness of 0.5 to 9 mm with an essentially recrystallized granular structure, made from an alloy based on aluminum, comprising 2.8 to 3.2% by weight Cu, 0.5 to 0.8% by weight Li, 0.1 to 0.3% by weight Ag, 0.2 to 0.7% by weight Mg, 0.2 to 0.6% by weight Mn, 0.01 to 0.15% by weight Ti, a quantity of Zn below 0.2% by weight, a quantity of Fe and Si of less than or equal to 0.1% by weight each, and unavoidable impurities to a proportion of less than or equal to 0.05% by weight each and 0.15% by weight in total, said plate being obtained by a method comprising casting, homogenization, hot rolling and optionally cold rolling, solution heat treatment, quenching and aging. The plates according to the invention are advantageous in particular for the manufacture of aircraft fuselage panels.

Isotropic plates made from aluminum-copper-lithium alloy for manufacturing aircraft fuselages

The invention concerns a process to manufacture a flat-rolled product, notably for the aeronautic industry containing aluminum alloy, in which, notably a flattening and/or stretching is performed with a cumulated deformation of at least 0.5% and less than 3% and a short heat-treatment is performed in which the sheet reaches a temperature between 130&#xb0; C. and 170&#xb0; C. for a period of 0.1 to 13 hours. The invention notably makes it possible to simplify the forming process of fuselage skins and to improve the balance between static mechanical strength properties and damage tolerance properties.

The invention relates to a method for manufacturing a thin sheet having a thickness of 0.5 to 3.3 mm and an essentially non-recrystallized structure made of aluminum-based alloy.

Thin sheets made of an aluminium-copper-lithium alloy for producing airplane fuselages

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 present invention relates to extruded, rolled and/or forged products. Also provided are methods of making such products based on aluminum alloy wherein a liquid metal bath is prepared comprising 2.0 to 3.5% by weight of Cu, 1.4 to 1.8% by weight of Li, 0.1 to 0.5% by weight of Ag, 0.1 to 1.0% by weight of Mg, 0.05 to 0.18% by weight of Zr, 0.2 to 0.6% by weight of Mn and at least one element selected from Cr, Sc, Hf and Ti, the quantity of said element selected, being 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and 0.01 to 0.15% by weight for Ti, the remainder being aluminum and inevitable impurities. The products and methods of the present invention offer an advantageous compromise between static mechanical strength and damage tolerance and are useful in aeronautical design.

Aluminum-copper-lithium products

Provided herein is a method for manufacturing a worked product comprising a fiber sensor therein. Also provided is a wrought product comprising a fiber sensor as well as structural elements and other products including fuselage skin and a wing panel.

Structrual element made of an aluminum alloy including an optical sensor

The present invention relates to extruded, rolled and/or forged products. Also provided are methods of making such products based on aluminum alloy wherein a liquid metal bath is prepared comprising 2.0 to 3.5% by weight of Cu, 1.4 to 1.8% by weight of Li, 0.1 to 0.5% by weight of Ag, 0.1 to 1.0% by weight of Mg, 0.05 to 0.18% by weight of Zr, 0.2 to 0.6% by weight of Mn and at least one element selected from Cr, Sc, Hf and Ti, the quantity of said element, if it is selected, being 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and 0.01 to 0.15% by weight for Ti, the remainder being aluminum and inevitable impurities. The products and methods of the present invention offer a particularly advantageous compromise between static mechanical strength and damage tolerance and are particularly useful in the field of aeronautical design.

Aluminum&#x2014;copper&#x2014;lithium products

The invention relates to a bi-functional extruded structural element, particularly a stringer for aeronautical construction, comprising a base that can be fixed on a surface, and a body, wherein the base comprises a first aluminum-based alloy, and further wherein the body comprises a second heat treatable aluminum-based alloy, having properties that are different from the properties of the first aluminum based alloy.

Monolithic and bi-functional extruded structural element

The present invention relates to an extruded, rolled and/or forged product made of an aluminum alloy. Alloys of the present invention may comprise (by mass):

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Issoire, France

Frank Eberl