Turbine blade and process for producing this turbine blade

Details Turbine blade and process for producing this turbine blade Turbine blade and process for producing this turbine blade

1992-05-08

1994-04-05

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

298891, 416241R, B23P 1500

Patent

active

052993531

ABSTRACT:
The turbine blade contains a casting having a blade leaf (1), blade foot (2) and, if appropriate, blade cover strip (3) and composed of an alloy based on a dopant-containing gamma-titanium aluminide.
This turbine blade is to be distinguished by a long lifetime, when used in a turbine operated at medium and high temperatures, and, at the same time, be capable of being produced in a simple way suitable for mass production. This is achieved in that, at least in parts of the blade leaf (1), the alloy is in the form of a material of coarse-grained structure and with a texture resulting in high tensile and creep strength and, at least in parts of the blade foot (2) and/or of the blade cover strip (3), provided if appropriate, is in the form of a material of fine-grained structure and with a ductility increased in relation to the material contained in the blade leaf (1).

REFERENCES:
patent: 3997640 (1976-12-01), Walton, Jr.
patent: 4631092 (1986-12-01), Ruckle et al.
patent: 4746374 (1988-05-01), Froes et al.
patent: 4820360 (1989-04-01), Eylon et al.
patent: 4849168 (1989-07-01), Nishyama et al.
patent: 5028491 (1991-07-01), Huang et al.
patent: 5076858 (1991-12-01), Huang
patent: 5082506 (1992-01-01), Huang
patent: 5125811 (1992-06-01), Amano et al.
patent: 5190603 (1993-03-01), Nazmy et al.
"Intermetallische Phasen, Werkstoffe zwischen Metall und Keramik", G. Sauthoff, pp. 15-19.

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