TITANIUM ALUMINIDE ALLOY MATERIAL FOR HOT FORGING, AND METHOD FOR FORGING TITANIUM ALUMINIDE ALLOY MATERIAL

A TiAl alloy material for hot forging has a chemical composition including, by atom, aluminum of 38.0% or greater and 39.9% or less, niobium of 3.0% or greater and 5.0% or less, vanadium of 3.0% or greater and 4.0% or less, carbon of 0.05% or greater and 0.15% or less, and Ti and inevitable impuriti...

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Bibliographic Details
Main Authors USUI, Shin, KUBUSHIRO, Keiji, TAKEYAMA, Masao, OTA, Yutaro, NAKASHIMA, Hirotoyo
Format Patent
LanguageEnglish
French
German
Published 26.01.2022
Subjects
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
FORGE FURNACES
FORGING
HAMMERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METALLURGY
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A TiAl alloy material for hot forging has a chemical composition including, by atom, aluminum of 38.0% or greater and 39.9% or less, niobium of 3.0% or greater and 5.0% or less, vanadium of 3.0% or greater and 4.0% or less, carbon of 0.05% or greater and 0.15% or less, and Ti and inevitable impurities as a residue. The TiAl alloy material for hot forging may further include boron as necessary. The TiAl alloy material for hot forging is prepared and kept at a temperature within a range of a phase equilibrium temperature of either a β-phase or a (β+α) phase in a phase diagram of a TiAl alloy so as to be forged in a non-oxidizing atmosphere. The TiAl alloy material is improved in processability during hot forging while keeping creep strength so as to enable high-speed forging.
Bibliography:Application Number: EP20200772555