Method of manufacture of a turbine blade.

摘要

Turbine blade consisting of a casting made of an alloy based on a dopant-containing gamma titanium aluminide and comprising a blade vane (1), a blade root (2) and, if required, a shroud band (3). …At least in some parts of the blade vane (1), the material has a coarse-grained structure which gives a high tensile strength and long-time rupture strength. In certain parts of the blade root (2) and/or the shroud band (3) which may be provided, the material has a fine-grained structure with a higher ductility than the material in the blade root (1). ……