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.

公开(公告)号：US20190071753A1

公开(公告)日：2019-03-07

申请号：US16184046

申请日：2018-11-08

Applicant: CONSTELLIUM ISSOIRE

Inventor： Frank EBERL ,  Bernard BES

IPC: C22C21/12 ,  C22F1/057 ,  C22C21/16

Abstract: The invention concerns a process to manufacture a flat-rolled product, notably for the aeronautic industry containing aluminum alloy comprising 2.1% to 3.9% Cu by weight, 0.7% to 2.0% Li by weight, 0.1% to 1,0% Mg by weight, 0% to 0.6% Ag by weight, 0% to 1% Zn by weight, at least 0.20% Fe +Si by weight, at least one element chosen from Zr, Mn, Cr, Sc, Hf and Ti, the quantity of said element, if chosen, being 0.05% to 0.18% by weight for Zn, 0.1% to 0.6% by weight for Mn, 0.05% to 0.3% by weight for Cr, 0.02% to 0.2% by weight for Sc, 0.05% to 0.5% by weight for Hf and 0.01% to 0.15% by weight for Ti, the other elements at most 0.05% by weight each and 0.15% by weight in total, the rest being aluminum, in which, notably a flattening and/or stretching is performed with a cumulated deformation of at least 0.5% and less than 3%, and a short heat-treatment is performed in which the sheet reaches a temperature between 130° C. and 170° C. for a period of 0.1 to 13 hours. The invention notably makes it possible to simplify the forming process of fuselage skins and to improve the balance between static mechanical strength properties and damage tolerance properties.

公开(公告)号：US20160060741A1

公开(公告)日：2016-03-03

申请号：US14781097

申请日：2014-04-01

Applicant: CONSTELLIUM ISSOIRE

Inventor： Juliette CHEVY ,  Bernard BES ,  Frank EBERL ,  Jean-Christophe EHRSTROM

IPC: C22F1/057 ,  C22C21/14 ,  B22D21/00 ,  C22C21/16

CPC classification number: C22F1/057 ,  B22D21/007 ,  C22C21/14 ,  C22C21/16

Abstract: The invention concerns a sheet 0.5 to 8 mm thick made from aluminium alloy. The sheet can be obtained by a method comprising casting, homogenising, hot rolling and optionally cold rolling, solution heat treatment, quenching and tempering, the composition and the tempering being combined in such a way that the elasticity limit in the longitudinal direction Rp0.2(L) is between 395 and 435 MPa. A sheet according to the invention is particularly advantageous for producing aircraft fuselage panels.

Abstract translation: 本发明涉及一种0.5至8毫米厚的由铝合金制成的片材。 该片材可以通过铸造，均质，热轧和任选的冷轧，固溶热处理，淬火和回火的方法获得，组合物和回火组合，使得纵向R弹性极限Rp0.2 （L）在395和435MPa之间。 根据本发明的片材对于生产飞机机身面板是特别有利的。