PROCESS FOR MANUFACTURING A BETA-GAMMA TIAL-BASED ALLOY

摘要

A method for the production of a γ-TiAl base alloy by vacuum arc remelting, which γ-TiAl base alloy solidifies via the (&bgr;-phase (&bgr;-γ-TiAl base alloy), comprises the following method steps: forming a basic melting electrode by melting, in at least one vacuum arc remelting step, of a conventional γ-TiAl primary alloy containing a lack of titanium and/or of at least one (&bgr;-stabilising element compared to the (&bgr;-γ-TiAl base alloy to be produced; allocating an amount of titanium and/or (&bgr;-stabilising element to the basic melting electrode, which amount corresponds to the reduced amount of titanium and/or (&bgr;-stabilising element, in an even distribution across the length and periphery of the basic melting electrode; adding the allocated amount of titanium and/or (&bgr;-stabilising element to the basic melting electrode so as to form the homogeneous (&bgr;-γ-TiAl base alloy in a final vacuum arc remelting step.