Constellium Issoire

Alcan Rhenalu

Constellium France

Olivier Ribaud

Armelle Danielou

Philippe Jarry

Soizic Blais

Bernard Valentin

Philippe Lequeu

Robert Rey-Flandrin

David Dumont

Stephane Vernede

Benoit Commet

Guillaume Bes

Aurele Mariaux

Emmanuel Waz

Laurent Jouet Pastre

Pierre-Yves Menet

Philipe Jarry

Rey-Flandrin Robert

Stéphane Vernede

Benoît Commet

Aurèle Mariaux

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 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 subject matter of the invention is a device for the direct cooling of a mould for the vertical semicontinuous casting of rolling ingots or extrusion billets () with gradual quenching by double jet (and), the first at substantially 32&#xb0; and second at substantially 22&#xb0;, simultaneously and delivering substantially the same flow rates and speeds from a single liquid chamber (). Another subject of the invention is a method using said device, with or without graphite insert () on the working faces and in association with various bottom block configurations.

Double-jet cooling device for semicontinuous vertical casting mould

A casting process for an aluminum alloy containing at least about 0.1% of Mg and/or at least about 0.1% of Li in which a liquid surface of the alloy is put into contact with a dried gas including at least about 2% of oxygen by volume and with a water partial pressure lower than about 150 Pa throughout most of the solidification process is described. The process makes it possible to cast most oxidable aluminum alloys, in particular aluminum alloys containing magnesium and/or lithium, without using additives such as beryllium and/or calcium and without using expensive devices and/or gases, to obtain cast ingots generally free from surface defects and pollution, in complete safety.

Casting process for aluminum alloys

A vertical casting process for an intermediate product, including the steps of (a) preparation of at least two aluminum based alloys, particularly a first alloy with composition P and a second alloy with composition T, (b) casting of the first alloy with composition P to a required height H, and (c) casting of an additional required height Hof the alloy with composition T. The object of this invention is the manufacture of monolithic structural elements with working properties that are variable in at least one direction, and particularly bi-functional or multi-functional structural elements capable of performing at least two functions that are traditionally performed by two different parts.

Manufacturing process for semi-finished products containing two aluminum-based alloys

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Renage, France

Olivier Ribaud