Patents Assigned to TiTAL GmbH
  • Patent number: 8668760
    Abstract: A method for the production of a ?-TiAl base alloy by vacuum arc remelting, which ?-TiAl base alloy solidifies via the ?-phase (?-?-TiAl base alloy), includes the following method steps of forming a basic melting electrode by melting, in at least one vacuum arc remelting step, of a conventional ?-TiAl primary alloy containing a lack of titanium and/or of at least one ?-stabilizing element compared to the ?-?-TiAl base alloy to be produced; allocating an amount of titanium and/or ?-stabilizing element to the basic melting electrode, which amount corresponds to the reduced amount of titanium and/or ?-stabilizing element, in an even distribution across the length and periphery of the basic melting electrode; and adding the allocated amount of titanium and/or ?-stabilizing element to the basic melting electrode so as to form the homogeneous ?-?-TiAl base alloy in a final vacuum arc remelting step.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: March 11, 2014
    Assignees: GfE Metalle und Materialien GmbH, TiTAL GmbH
    Inventors: Dipl.-Ing Matthias Achtermann, Willy Fürwitt, Volker Güther, Dipl.-Mineraloge Hans-Peter Nicolai