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    PROCEDE DE FABRICATION DE PRODUITS EN ALLIAGE D'ALUMINIUM - CUIVRE - LITHIUM A PROPRIETES EN FATIGUE AMELIOREES ET DISTRIBUTEUER POUR CE PROCEDE
    7.
    发明公开
    PROCEDE DE FABRICATION DE PRODUITS EN ALLIAGE D'ALUMINIUM - CUIVRE - LITHIUM A PROPRIETES EN FATIGUE AMELIOREES ET DISTRIBUTEUER POUR CE PROCEDE 审中-公开
    用于产品从铝 - 铜 - 锂合金这个过程改进的疲劳性能和经销商的制备

    公开(公告)号：EP3080318A2

    公开(公告)日：2016-10-19

    申请号：EP14828176.9

    申请日：2014-12-11

    申请人： Constellium Issoire

    发明人： DANIELOU, Armelle ,  BLAIS, Soizic ,  JARRY, Philippe ,  RIBAUD, Olivier ,  VALENTIN, Bernard

    IPC分类号： C22C21/12 ,  C22C21/16 ,  C22C21/18 ,  C22F1/04 ,  B22D11/119 ,  B22D43/00

    CPC分类号： C22F1/057 ,  B21B1/22 ,  B21B2003/001 ,  B21C23/212 ,  B21J5/00 ,  B22D11/003 ,  B22D11/0408 ,  B22D11/041 ,  B22D11/059 ,  B22D21/007 ,  C22C1/026 ,  C22C21/12 ,  C22C21/14 ,  C22C21/16 ,  C22C21/18

    摘要： The invention relates to a method for manufacturing an aluminium alloy product including the steps of: creating a bath of liquid metal in an aluminium - 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 (1) is lower than 0.4 ml/100 g, the oxygen content above the liquid surface (14, 15) is less than 0.5 % by volume, the tundish used (7) for casting is made of a fabric including essentially carbon, including a lower surface (76), an upper surface defining the opening through which the liquid metal is inserted (71) and a wall with a substantially rectangular section, the wall containing two longitudinal portions parallel to the width W (720, 721) and two transverse portions parallel to the thickness T (730, 731) said transverse and longitudinal portions being formed by at least two fabrics, a first substantially sealing and semi-rigid fabric (77) ensuring that the tundish keeps its shape during casting, and a second non-sealing fabric (78) allowing the passage and filtration of the liquid, said first and second fabrics being connected to one another with no overlap and no gaps separating same, said first fabric continuously covering at least 30 % of the surface of said wall portions (720, 721, 730, 731) and being positioned such that the liquid surface is in contact with same over the entire section.

    摘要翻译： 本公开提供了具有包含铝合金作为一个重量百分比％的厚度的至少80毫米的钢板：铜：2.0-6.0; 李：0.5-2.0; 镁：0-1.0; AG：0-0.7; 锌0-1.0; 和选自Zr，锰，铬，钪，铪和Ti，所述元件的量来选择，如果选择的至少一种元素，作为12点05分至12点20分（重量）％为的Zr，0点05分至0.8％重量％吨的Mn，0点05分至0.3 ％（重量）对Cr和SC，0点05分至0.5％（重量）Hf和12点01分〜12：15％重量％为钛，硅≦0.1; 铁≦0.1; 他人≦每个0:05和≦0:15总共worin老化状态的对数疲劳在上光滑试样与242兆帕，50赫兹的频率，R的应力比的最大应力振幅LT方向中间厚度平均测量值= 至少250000个周期的0.1。