Constellium Issoire

Pechiney Recherche

Aluminium Pechiney

Pechiney Rhenalu

Constellium Neuf-brisach

Alcan Rhenalu

Constellium France

C-tec Constellium Technology Center

Philippe Jarry

Bernard Bes

Soizic Blais

Armelle Danielou

Bechir Chehab

Bernard Valentin

Olivier Ribaud

Jean-Louis Achard

Christophe Sigli

Jean-Marc Legresy

Pierre Le Brun

Christine Henon

Juliette Chevy

Alireza Arbab

Laurent Cottignies

Marine Ledoux

Ricky Whelchel

Martin Peter Schmidt

Bernard Bés

Herve Gehanno

Claudine Strippoli Gerin

Pierre Yves Menet

Serge Guy

Jocelyn Prigent

Mircea Cablea

Pierre-Yves Menet

Fanny Mas

Marc Bertherat

Mathieu Revil-baudard

The invention relates to a process for manufacturing a part () comprising a formation of successive solid metal layers (), superimposed on one another, each layer describing a pattern defined from a numerical model (M), each layer being formed by the deposition of a metal (), referred to as a filler metal, the filer metal being subjected to an input of energy so as to melt and constitute, by solidifying, said layer, wherein the filler metal takes the form of a powder (), of which the exposure to an energy beam () results in a melting followed by a solidification in such a way as to form a solid layer (), the method being characterized in that the filler metal () is an aluminum alloy comprising at least the following alloying elements: The invention also relates to a part obtained by this method. The alloy used in the additive manufacturing method according to the invention, makes it possible to obtain parts with remarkable mechanical performance, while still obtained a method of which the productivity is advantageous.

Process for manufacturing an aluminum alloy part

Liquid metal degassing device comprising a chamber containing a liquid metal bath, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap dihydrogen from the circulating gas. Method for degassing a liquid metal bath to reduce the hydrogen concentration of the liquid metal comprising the following steps

Device for trapping hydrogen

Aluminium alloy strip or sheet for no-flux or reduced-flux soldering

The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr&#x2265;&#x2212;0.06 *Li+0.242; Zn: &#x3c;1.0; Ag: &#x3c;0.15; Fe+Si&#x2264;0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements &#x2264;0.05 each and &#x2264;0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.

Low-density aluminum-copper-lithium alloy products

Method for using a tubular sonotrode

The disclosure provides for plate having a thickness of at least 80 mm comprising aluminium alloy as a percentage by weight %: Cu: 2.0-6.0; Li: 0.5-2.0; Mg: 0-1.0; Ag: 0-0.7; Zn 0-1.0; and at least one element selected from Zr, Mn, Cr, Sc, Hf and Ti, the amount of said element, if selected, being 0.05 to 0.20 wt % for Zr, 0.05 to 0.8% wt % t for Mn, 0.05 to 0.3 wt % for Cr and for Sc, 0.05 to 0.5 wt % Hf and 0.01 to 0.15% wt % for Ti, Si&#x2264;0.1; Fe&#x2264;0.1; others &#x2264;0.05 each and &#x2264;0.15 in total, wherein the aged state logarithmic fatigue mean measured at mid-thickness in the LT direction on smooth specimens with a maximum stress amplitude of 242 MPa, a frequency of 50 Hz, a stress ratio of R=0.1 of at least 250,000 cycles.

Aluminium-copper-lithium alloy products with improved fatigue properties

The method comprising the following steps:

Method for wetting a sonotrode

The invention relates to a method for manufacturing an aluminum alloy product including the steps of: creating a bath of liquid metal in an aluminum-copper-lithium alloy, casting said alloy by vertical semi-continuous casting so as to obtain a plate with thickness T and width W such that, during solidification, the hydrogen content of said liquid metal bath () is lower than 0.4 ml/100 g, the oxygen content above the liquid surface () is less than 0.5% by volume.

Method for manufacturing products made of aluminum-copper-lithium alloy with improved fatigue properties, and distributor for this method

The invention relates to a manufacturing method for making an unwrought semi-finished product having at mid thickness a density of micropores of size greater than 90 &#x3bc;m less than 50% and preferably less than 20% of the density of micropores of size greater than 90 &#x3bc;m obtained by a method according to prior art. The method according to the invention comprises in particular an ultrasound treatment step for the molten metal bath in a furnace and/or a vessel using an immersed device comprising at least one ultrasound transmitter. The semi-finished products obtained according to the method of the invention are particularly advantageous for manufacturing by rolling sheets designed for the aircraft industry to produce spars, ribs, upper and lower wing skins and for manufacturing by extrusion sections designed for the aircraft industry to produce stiffeners.

Manufacturing method of making aluminum alloy semi-finished product with improved microporosity

The invention relates to a method for the vertical semi-continuous direct chill casting of composite billets or plates comprising at least two layers of aluminum alloys, using a separator which is in contact with the solidification front and which provides a seal between the two alloys during casting, said separator being vibrated while it is in contact with the solidification front, so that the separator is not frozen in and entrained by the solid metal. The invention also relates to a device that can be used to carry out said method.

Multi-alloy vertical semi-continuous casting method

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

Process for manufacturing aluminum alloy products, with high toughness and fatigue resistance comprising: (a) preparing an aluminum alloy bath, (b) adding a refining agent containing particles of AlTiC type phases into the bath, (c) casting an as-cast form such as an extrusion ingot, a forging ingot or a rolling ingot, (d) hot transforming the as-cast form, possibly after scalping, to form a blank or a product with final thickness, (e) optionally cold transforming the blank to a final thickness, (f) applying a solution heat treatment and quenching the product output from (d) or (e), followed by relaxation by controlled stretching with permanent elongation between 0.5 and 5%, and optionally annealing, wherein the quantity of refining agent is chosen such that the average casting grain size of the as-cast form is more than 500 &#x3bc;m. The present invention may be used, for example, to manufacture fuselage sheet or light-gauge plates made with 6056 alloy.

Aluminum alloy products with high toughness and production process thereof

Process for forming an aluminum alloy strip, including the steps of a) obtaining an aluminum alloy consisting essentially of, by weight, 0.5 to 13% Si, 0 to 2% Mg, 0 to 2% Cu, 0 to 1% Mn, 0 to 2% Fe, other elements less than 0.5% each and less than 2% total, and remainder Al; and b) continuously casting the aluminum alloy between twin cooled rolls having a force applied thereto, to obtain a cast strip of thickness between 1.5 and 5 mm, and optionally cold rolling the cast strip. The force applied to the rolls is maintained below an amount represented by a straight line between a point A and a point B on a graph of specific applied force (y-axis) vs. cast width (x-axis), where point A is (1.5 mm, 750 tons/meter at cast width) and point B is (5 mm, 500 tons/meter of cast width).

Method for making thin, high-strength, highly formable aluminium alloy strips

A process for obtaining bimaterial parts by casting an aluminum alloy onto an insert coated with a metal film. In this process, the oxide layer is removed from the insert by treatment under vacuum, and then the insert is coated with a titanium based film by physical vapor deposition, and the insert is placed in a mold which is filled with a casting alloy.

Process for obtaining bimaterial parts by casting an alloy around an

The disclosure relates to a method of obtaining, by moulding, bimaterial parts formed by two aluminium alloys one of which constitutes the core and the other the matrix. The method consists in using a core, optionally containing a refractory skeleton, removing a natural coating of alumina present on the surface of the core and immediately afterwards coating the assembly thus obtained with a film impermeable to gas and consisting of a metal such as nickel, placing the coated assembly in a mould which is filled with the alloy of the matrix in the molten state at a temperature such that at least 30% of the core is superficially remelted. The method can be applied to the manufacture of motor vehicle parts such as engine cylinder heads and the insertion of ducts into aeronautical parts.

Method of obtaining bimaterial parts by moulding

Growing community of inventors

Grenoble, France

Philippe Jarry