Titanium alloy turbine blade

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...

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Bibliographic Details
Main Authors PARK SEUNGHWAN, KAMOSHIDA HIRONORI, HIRANO SATOSHI, ASAI KUNIO, IMANO SHINYA, MURATA KENICHI, YOSHIDA TAKEHIKO
Format Patent
LanguageEnglish
Published 03.06.2015
Subjects
BLASTING
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
ENGINE PLANTS IN GENERAL
FERROUS OR NON-FERROUS ALLOYS
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
METALLURGY
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WEAPONS
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Summary: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.
Bibliography:Application Number: CN201110428658