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    ALUMINIUM-COPPER-LITHIUM PRODUCTS
    1.
    发明申请
    ALUMINIUM-COPPER-LITHIUM PRODUCTS 审中-公开

    公开(公告)号：US20190136356A1

    公开(公告)日：2019-05-09

    申请号：US16213328

    申请日：2018-12-07

    Applicant: Constellium Issoire

    Inventor： Fabrice HEYMES ,  Frank EBERL ,  Gaelle POUGET

    IPC: C22F1/057 ,  C22F1/04 ,  C22C21/00 ,  C22C21/16

    Abstract: The present invention relates to extruded, rolled and/or forged products. Also provided are methods of making such products based on aluminum alloy wherein a liquid metal bath is prepared comprising 2.0 to 3.5% by weight of Cu, 1.4 to 1.8% by weight of Li, 0.1 to 0.5% by weight of Ag, 0.1 to 1.0% by weight of Mg, 0.05 to 0.18% by weight of Zr, 0.2 to 0.6% by weight of Mn and at least one element selected from Cr, Sc, Hf and Ti, the quantity of said element selected, being 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and 0.01 to 0.15% by weight for Ti, the remainder being aluminum and inevitable impurities. The products and methods of the present invention offer an advantageous compromise between static mechanical strength and damage tolerance and are useful in aeronautical design.

    EXTRADOS STRUCTURAL ELEMENT MADE FROM AN ALUMINIUM COPPER LITHIUM ALLOY
    2.
    发明申请
    EXTRADOS STRUCTURAL ELEMENT MADE FROM AN ALUMINIUM COPPER LITHIUM ALLOY 审中-公开
    来自铝合金锂合金的外部结构元件

    公开(公告)号：US20160144946A1

    公开(公告)日：2016-05-26

    申请号：US14899743

    申请日：2014-06-18

    Applicant: CONSTELLIUM ISSOIRE

    Inventor： Armelle DANIELOU ,  Gaelle POUGET ,  Christophe SIGLI

    IPC: B64C3/26 ,  C22C21/14 ,  C22C1/02 ,  C21D1/30 ,  C21D8/00 ,  B22D21/00 ,  C22F1/057 ,  C22C21/16

    CPC classification number: B64C3/26 ,  B22D21/007 ,  C21D1/30 ,  C21D8/00 ,  C22C1/026 ,  C22C21/12 ,  C22C21/14 ,  C22C21/16 ,  C22F1/057

    Abstract: The invention relates to an extrados structural element made from an aluminum, copper and lithium alloy and a method for manufacturing same. In the method according to the invention, an alloy with composition (in wt %) 4.2 to 5.2 Cu, 0.9 to 1.2 Li, 0.1 to 0.3 Ag, 0.1 to 0.25 Mg, 0.08 to 0.18 Zr, 0.01 to 0.15 Ti, optionally up to 0.2 Zn, optionally up to 0.6 Mn, an Fe and Si content level less than or equal to 0.1% each, and other element with a content level less than or equal to 0.05% each and 0.15% in total, the aluminum is poured, homogenized, deformed hot and optionally cold, placed in a solution at a temperature of at least 515° C., pulled from 0.5 to 5% and annealed. The combination in particular of the magnesium, copper and manganese content with the temperature in solution can reach a very advantageous elasticity under compression limit. Thus, the products according to the invention having a thickness of at least 12 mm have an elasticity under compression limit in the longitudinal direction of at least 645 MPa and an elongation in the longitudinal direction of at least 7%.

    Abstract translation: 本发明涉及由铝，铜和锂合金制成的外部结构元件及其制造方法。 在根据本发明的方法中，组合物（重量％）为4.2〜5.2的Cu，0.9〜1.2的Li，0.1〜0.3的Ag，0.1〜0.25的Mg，0.08〜0.18的Zr，0.01〜0.15的Ti， 0.2 Zn，任选高达0.6Mn，Fe和Si含量各自小于或等于0.1％，其他元素的含量均小于或等于0.05％，总共为0.15％，将铝倒入， 均质化，变形的热和任选冷的，在至少515℃的温度下放置在溶液中，从0.5至5％拉伸并退火。 特别是镁，铜和锰含量与溶液中的温度的组合在压缩极限下可以达到非常有利的弹性。 因此，根据本发明的具有至少12mm厚度的产品在纵向的压缩极限下具有至少645MPa的弹性，并且在纵向上的伸长率至少为7％。

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