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    ALUMINUM ALLOY COMPRISING LITHIUM WITH IMPROVED FATIGUE PROPERTIES
    21.
    发明申请
    ALUMINUM ALLOY COMPRISING LITHIUM WITH IMPROVED FATIGUE PROPERTIES 审中-公开

    公开(公告)号：US20200165707A1

    公开(公告)日：2020-05-28

    申请号：US16619419

    申请日：2018-06-05

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Ricky WHELCHEL ,  Mathieu REVIL-BAUDARD ,  Philippe JARRY ,  Bernard BES ,  Fanny MAS

    IPC: C22C21/18 ,  C22C21/16 ,  C22F1/057

    Abstract: An aluminium alloy comprising lithium with improved mechanical strength and toughness. The invention relates to a 2XXX wrought alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. The invention also relates to an as-cast 2XXX alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. Finally, the invention relates to an aircraft structure element, preferably a lower surface or upper surface element, the skin and stiffeners of which originate from the same starting material, a spar or a rib, comprising a wrought product.

    METHOD OF MANUFACTURING A STRUCTURAL ELEMENT
    22.
    发明申请
    METHOD OF MANUFACTURING A STRUCTURAL ELEMENT 审中-公开

    公开(公告)号：US20200078862A1

    公开(公告)日：2020-03-12

    申请号：US16466653

    申请日：2017-12-07

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Jean-Christophe EHRSTROM ,  Bechir CHEHAB

    IPC: B22F3/105 ,  B33Y10/00

    Abstract: The invention is a method of manufacturing, from a workpiece, a metallic structural element comprising a skin, from which stringers extend. According to the invention, some of the stringers are obtained by machining, while the others are obtained by addition of material. The material can be added by an additive manufacturing process.

    Method for inspecting a liquid metal by ultrasounds
    23.
    发明授权
    Method for inspecting a liquid metal by ultrasounds 有权

    公开(公告)号：US10563285B2

    公开(公告)日：2020-02-18

    申请号：US15516623

    申请日：2015-10-06

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Jean-Louis Achard ,  Pierre Le Brun

    IPC: G01N33/205 ,  C22B9/02 ,  B06B3/00 ,  C22B21/06 ,  G01N29/032 ,  G01N29/22

    Abstract: The method comprises the following steps: a) Providing a sonotrode (1) formed from an essentially inert material with respect to the liquid metal, such as a ceramic, and preferably a silicon nitride or a silicon oxynitride, such as SIALON, or a metal essentially inert to said liquid metal, b) Immersing at least partially the sonotrode (1) in a bath of said metal, c) Applying to the sonotrode (1) power ultrasounds, particularly ultrasounds having a power greater than 10 watts to obtain the wetting of said sonotrode by said metal, d) Applying continuously to the sonotrode (1) measurement ultrasounds, also known as testing ultrasounds, particularly ultrasounds wherein the frequency is between 1 and 25 MHz, e) Applying intermittently to the sonotrode (1) power ultrasounds, particularly ultrasounds having a power greater than 10 watts, to maintain said wetting.

    METHOD FOR ULTRASONIC TESTING OF AN OBJECT
    25.
    发明申请
    METHOD FOR ULTRASONIC TESTING OF AN OBJECT 审中-公开

    公开(公告)号：US20180372688A1

    公开(公告)日：2018-12-27

    申请号：US15781643

    申请日：2016-12-02

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Hervé STOPPIGLIA ,  Pascale POMMIER

    IPC: G01N29/14 ,  G01N29/24 ,  G01N29/44 ,  G01N29/04

    Abstract: The invention relates to a method for ultrasonic inspection of an object wherein a multi-element ultrasonic probe comprising a plurality of basic transducers is applied to the object. The method comprises: consecutive activation of the basic transducers such that when activated each transducer emits an ultrasonic wave incident on said object, following each activation of a basic transducer, acquisition, by a plurality of basic transducers, of a detection signal representative of a wave reflected by the object during propagation of said ultrasonic wave in the latter. The object is divided into points referred to as mesh points. Each acquired detection signal is subsequently used to calculate, at each mesh point, a parameter representative of the object that is to reflect an incident ultrasonic wave. The method comprises, during this calculation, a selection of a group of transducers from among the basic transducers of the probe.

    METHOD FOR RECYCLING SCRAP OF 2XXX OR 7XXX SERIES ALLOY
    29.
    发明申请
    METHOD FOR RECYCLING SCRAP OF 2XXX OR 7XXX SERIES ALLOY 审中-公开

    公开(公告)号：US20170166997A1

    公开(公告)日：2017-06-15

    申请号：US15325711

    申请日：2015-07-10

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Alireza ARBAB ,  Laurent BOISSONNET ,  Jules DIAWARA ,  Pascal HERVIEU ,  Anne PICHAT

    IPC: C22B21/00 ,  C22B7/00 ,  B22D7/00

    CPC classification number: C22B21/0092 ,  B22D7/005 ,  C22B7/006 ,  C22B21/0007 ,  C22B21/0023 ,  C22B21/0069 ,  C22C21/10 ,  C22C21/16 ,  Y02P10/218 ,  Y02P10/23 ,  Y02P10/234

    Abstract: The invention relates to a method of manufacturing an aluminum alloy ingot using scrap aluminum alloy in the 2xxx or 7xxx series wherein (i) scrap aluminum alloy in the 2xxx or 7xxx series is procured; (ii) optionally, oil present on the scrap is separated, (iii) a first treatment operation of said scrap is made by a first liquid at a temperature of at least 10° C., said first liquid being an aqueous solution with pH equal to 1 to 5 or 8 to 13, (iv) the first liquid and the scrap thus treated are separated, (v) at least one second treatment operation of said scrap by a second liquid is made, (vi) the second liquid and the scrap thus treated are separated, (vii) said scrap thus obtained is melted, (viii) a first solidification is made in a rough intermediate form, (viii) an aluminum alloy ingot in the series of scrap used is cast; The invention also relates to a fabrication method after rolling, extrusion and/or forging of an aeronautical structure comprising the steps in the above method, and then at least one rolling, extrusion and/or forging step of said aluminum alloy ingot in the series of scrap used.

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