Turbinenschaufel aus einer Titanlegierung

Details

Veröffentlichungs-Nr.

EP2469032

Aktenzeichen

EP11195796

Anmeldetag

27. Dezember 2011

Veröffentlichung

12. März 2014

Rechtsraum

EP

IPC

F01D5/28

Abstract

It is an objective of the present invention to provide an effective use of the friction stir processing (FSP) technology for Ti-alloy turbine blades with a long radial length, and provide a Ti-alloy turbine blade having both high erosion resistance and high long term reliability. There is provided a turbine blade made of an ±-² titanium alloy having an average Vickers hardness of 320 Hv or less, the turbine blade having a leading edge, in which: the turbine blade includes, at the leading edge thereof, a first hardened surface region having a thickness of from 0.5 to 3.0 mm and having an average Vickers hardness of 340 Hv or more; and the first hardened surface region is formed by friction stir processing a surface region of the leading edge of the turbine blade.

Anmelder

Firmen

Mitsubishi Hitachi Power Systems, Ltd.
Hitachi Ltd.

Land

🇯🇵 Japan

Fachgebiete