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    ALUMINUM ALLOY COMPRISING LITHIUM WITH IMPROVED FATIGUE PROPERTIES
    1.
    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 FOR WETTING A SONOTRODE
    3.
    发明申请
    METHOD FOR WETTING A SONOTRODE 审中-公开

    公开(公告)号：US20170299555A1

    公开(公告)日：2017-10-19

    申请号：US15516629

    申请日：2015-10-06

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Jean-Louis ACHARD ,  Philippe JARRY

    IPC: G01N29/34 ,  C22C21/04 ,  C22B9/02 ,  C22C21/08 ,  G01N29/02 ,  G01N33/20

    Abstract: The method comprising the following steps: a) Providing a first bath of a liquid metal (1) comprising aluminium with a content X and magnesium with a content Y, the magnesium content Y being different to zero, b) Immersing at least partially a sonotrode (3) formed from a material inert to liquid aluminium, in the first bath of liquid metal (1), and c) Applying power ultrasounds to the sonotrode (3) so as to excite the liquid metal (1) until wetting (5) of the sonotrode (3) by the liquid metal (1) is obtained. d) Cooling the first liquid metal (1) of the first bath until solidification of the first liquid metal (1) around the sonotrode (3) is obtained, generating an intimate bond (6) between the sonotrode (3) and the solidified first liquid metal (1) having a bonding strength substantially equal to that of brazing between two metals. e) Machining the solidified first metal (1) in the form of a flange (7) configured for the attachment of a mechanical amplifier and/or of a transducer (4).

    DEVICE FOR TRAPPING HYDROGEN
    6.
    发明申请
    DEVICE FOR TRAPPING HYDROGEN 有权

    公开(公告)号：US20220340999A1

    公开(公告)日：2022-10-27

    申请号：US17615922

    申请日：2020-06-03

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Jocelyn PRIGENT ,  Philippe JARRY ,  Pierre LE BRUN

    IPC: C22B34/12 ,  C22B21/06 ,  C22B9/05 ,  C21C7/072

    Abstract: 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 a) Preparing a liquid metal bath, preferably an aluminum alloy b) Circulating a gas, c) Exchanging hydrogen from the circulating gas with the liquid metal such that the hydrogen dissolved in the liquid metal bath diffuses into the circulating gas and enriches the circulating gas with dihydrogen, d) Purifying the circulating gas enriched with dihydrogen in a purification chamber comprising a getter material configured to trap dihydrogen from the circulating gas.

    METHOD FOR PRODUCING SHEET INGOTS BY VERTICAL CASTING OF AN ALUMINIUM ALLOY
    7.
    发明申请
    METHOD FOR PRODUCING SHEET INGOTS BY VERTICAL CASTING OF AN ALUMINIUM ALLOY 有权

    公开(公告)号：US20210220905A1

    公开(公告)日：2021-07-22

    申请号：US16096780

    申请日：2017-05-17

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Philippe JARRY ,  Fabio TAINA ,  Jean-Louis ACHARD ,  Marc BERTHERAT ,  Pierre-Yves MENET ,  Mircea CABLEA

    IPC: B22D11/00 ,  B22D11/115 ,  B22D11/041 ,  B22D11/12

    Abstract: A method for casting a metal alloy in an ingot mold extending along a vertical axis, the horizontal section of the ingot mold being parallelepiped in shape. During casting, a travelling alternating magnetic field is applied to a liquid phase of the alloy, the magnetic field having a maximum amplitude propagating along an axis of propagation. Under the effect of the magnetic field, a Lorentz force is applied to the liquid phase of the alloy, such that a Lorentz force of maximum intensity propagates along the axis of propagation. The method includes modulating the maximum intensity of the Lorentz force propagating along the axis of propagation. This modulation is obtained by varying, over time, one or more parameters, referred to as force parameters, governing the Lorentz force. An ingot obtained by the method is also described.

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