GAS TURBINE MOVING BLADE AND MANUFACTURE THEREOF

PURPOSE:To make it possible to improve corrosion resistance and creep strength in a blade part and high temperature strength in a dovetail part by continuously changing a composition between the blade part and the dovetail part. CONSTITUTION:In the case of an Ni-radical alloy-made gas turbine moving...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIDA TADAMI, SAITO TOSHIAKI, HIRANE TERUO, KODAMA HIDEYO, IIJIMA KATSUKI, YOSHINARI AKIRA, OKAYAMA AKIRA, MORIKAWA MINORU, HASHIDA RYOZO, ICHIGE MAKOTO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To make it possible to improve corrosion resistance and creep strength in a blade part and high temperature strength in a dovetail part by continuously changing a composition between the blade part and the dovetail part. CONSTITUTION:In the case of an Ni-radical alloy-made gas turbine moving blade in which a blade part 10 is formed of a corrosion resistance alloy with a dovetail part 12 formed of a high temperature resistance high strength alloy, the blade part 10 is set to a 13wt.% or more Cr amount with the Cr amount gradually decreased from a shank part 11 over to the dovetail part 12, and the Cr amount is decreased in the dovetail part 12 having maximum strength. In this way, corrosion resistance and creep strength of the blade part 10 and high temperature strength of the dovetail part 12 can be improved. Accordingly, the extension of a life of the moving blade and the improvement of thermal efficiency of a gas turbine by increasing its combustion gas temperature can be contrived.