Constellium Issoire

Constellium Neuf-brisach

Pablo Lorenzino

Jean-Christophe Ehrstrom

Armelle Danielou

Bechir Chehab

Lukasz Dolega

Juliette Chevy

Lionel Peguet

Nicolas Bayona-Carrillo

The invention concerns a method for manufacturing a thin sheet made of aluminium-based alloy comprising, in percent by weight, 2.3 to 2.7% Cu, 1.3 to 1.6% Li, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn less than 0.3, a quantity of Fe and of Si less than or equal to 0.1% each, and unavoidable impurities at a content less than or equal to 0.05% by weight each and 0.15% by weight in total, wherein, in particular, the hot-rolling input temperature is between 400° C. and 445° C. and the hot-rolling output temperature is less than 300° C. The sheets according to the invention have advantageous mechanical properties and are used, in particular, for the manufacture of aircraft fuselage panels.

Thin sheets made of aluminium-copper-lithium alloy for aircraft fuselage manufacture

A strip intended for the manufacture of brazed heat exchangers, having a core made of an alloy with the composition (weight %):

Strip of aluminium alloy for manufacturing brazed heat exchangers

The invention relates to a sheet metal plate () for creating flooring (), in particular for industrial vehicles, having on its upper surface () a plurality or raised patterns, each raised pattern comprising one or more protruding portions (), the raised patterns being arranged periodically, discreetly and in orderly fashion, the height h of the raised patterns being between 0.3 and 3 mm, characterized in that the plate has, on its lower surface (), which is intended to be bonded to a support member, a rough surface the roughness Rmax of which is between 10 μm and 250 μm. The invention also relates to the method of producing said plate and the use of said sheet metal plate for creating flooring for industrial vehicles, preferably flooring for refrigerated vehicles.

Sheet metal plate with raised areas for creating industrial flooring with improved adhesive properties

The invention relates to a thin metal sheet which is made of an alloy based on substantially recrystallized aluminum and which has a thickness of 0.25 to 12 mm, the alloy comprising, in percent by weight, Cu 3.4-4.0; Mg 0.5-0.8; Mn 0.1-0.7; Fe #0.15; Si #0.15; Zr #0.04; Ag #0.65; Zn #0.5; inevitable impurities #0.05 each and #0.15 in total, the remainder consisting of aluminum. The invention also relates to a process for manufacturing such a metal sheet and to the use thereof as a fuselage panel or sheet metal for the production of composite products such as fiber metal laminates (FML) for wing or fuselage applications in the aeronautical industry.

Metal sheet made of high-strength 2XXX alloy for an aircraft fuselage

The invention involves a method for testing a damage tolerance property in an aluminum alloy part with the following steps:

Method for testing a damage tolerance property of a part made of an aluminium alloy

The subject of the invention is a process for manufacturing a wrought product made of aluminum alloy comprising the following steps: a) casting a plate made of alloy comprising, in percentages by weight, Cu: 2.1 to 2.8; Li: 1.1 to 1.7; Mg: 0.2 to 0.9; Mn: 0.2 to 0.6; Ti: 0.01-0.2; Ag&#x3c;0.1; Zr&#x3c;0.08; Fe and Si #0.1 each; unavoidable impurities #0.05% each and 0.15% in total; remainder aluminum; b) homogenizing said plate at 480-520&#xb0; C. for 5 to 60 hours; c) hot-rolling and optionally cold-rolling said homogenized plate to give a sheet; d) solution annealing the sheet at 470-520&#xb0; C. for 5 minutes to 4 hours; e) quenching the solution-annealed sheet; f) controlled tensioning of the solution-annealed and quenched sheet with a permanent set of 1 to 6%; g) tempering of the tensioned sheet by heating at a temperature of at least 160&#xb0; C. for a maximum time of 30 hours.

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Voiron, France

Pablo Lorenzino