Patent ID: 8668760
Filing Date: 2014-03-11
Classification: C22B,C22C

Abstract:
1. A method for the production of a β-γ-TiAl base alloy by vacuum arc remelting wherein said β-γ-TiAl base alloy solidifies via the β-phase, the method comprising 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 at least one of titanium and at least one β-stabilizing element compared to the β-γ-TiAl base alloy to be produced; allocating an amount of at least one of titanium and said β-stabilizing element to the basic melting electrode, wherein said amount corresponds to the reduced amount of at least one of titanium and the β-stabilizing element, in an even distribution across a length and periphery of the basic melting electrode; adding the allocated amount of at least one of titanium and said β-stabilizing element to the basic melting electrode so as to form the homogeneous β-γ-TiAl base alloy in a final vacuum arc remelting step.