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


    Access

    Download


    Export, share and cite



    Title :

    Extrados structural element made from an aluminium copper lithium alloy


    Contributors:

    Publication date :

    2022-10-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B22D CASTING OF METALS , Gießen von Metallen / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen



    EXTRADOS STRUCTURAL ELEMENT MADE FROM AN ALUMINIUM COPPER LITHIUM ALLOY

    DANIELOU ARMELLE / POUGET GAELLE / SIGLI CHRISTOPHE | European Patent Office | 2016

    Free access



    THIN SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE

    DAVO GUTIERREZ MARIA BELEN / PEGUET LIONEL / SAFRANY JEAN-SYLVESTRE et al. | European Patent Office | 2020

    Free access

    EXTRUDED PRODUCTS FOR AEROPLANE FLOORS MADE OF AN ALUMINIUM-COPPER-LITHIUM ALLOY

    PIGNATEL JÉROME / POUGET GAËLLE | European Patent Office | 2016

    Free access