High-temperature component, especially a turbine blade, and proc

Details High-temperature component, especially a turbine blade, and proc High-temperature component, especially a turbine blade, and proc

1993-06-04

1995-04-25

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428548, 428567, 428569, B32B 1502

Patent

active

054097819

ABSTRACT:
A turbine blade including a blade and blade foot. The blade foot is formed by a ductile material and the blade comprises a material which is brittle compared to the ductile material but resistant to high temperature. The two materials are alloys of the same base compositions but differ as to presence and/or quantity of at least one doping element. The alloys can be hot-compacted with the formation of a transition zone joining the blade and blade root wherein fine crystallites of the blade root interpenetrate coarse crystallites of the blade. The two materials can comprise a gamma-titanium aluminide containing 0.5 to 8 atomic percent of a dopant. The turbine blade exhibits outstanding mechanical properties at high temperatures, good ductility at room temperature and a long service life.

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"Turbinenschaufel mit hoher Warm-und Zunderfestigkeit, insbesondere fur Gasturbinen, sowie Verfahren zu ihrer Herstellung", R. Kieffer, 1/52, pp. 1-7.

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