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US 12,221,683 B2Granted
Titanium aluminide alloy material for hot forging and forging method for titanium aluminide alloy material
AssigneesIHI Corporation, Tokyo Institute of Technology
InventorsKeiji Kubushiro, Yutaro Ota, Shin Usui, Masao Takeyama, Hirotoyo Nakashima
Life of this patent
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Abstract
A titanium aluminide 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 titanium and an inevitable impurity as a residue.
Claims14
A titanium aluminide alloy material for hot forging having a chemical composition, comprising:
- aluminum of 38.0 atomic % or greater and 39.9 atomic % or less, niobium of 3.0 atomic % or greater and 5.0 atomic % or less, vanadium of 3.0 atomic % or greater and 4.0 atomic % or less, carbon of 0.05 atomic % or greater and 0.15 atomic % or less, and titanium and an inevitable impurity,
- wherein
- the titanium aluminide alloy material has a metallographic structure comprising crystalline grains of lamellar structure, crystalline grains of γ-phase, and crystalline grains of β-phase.
A titanium aluminide alloy material for hot forging having a chemical composition comprising:
- aluminum of 38.0 atomic % or greater and 39.9 atomic % or less, niobium of 3.0 atomic % or greater and 5.0 atomic % or less, vanadium of 3.0 atomic % or greater and 4.0 atomic % or less, carbon of 0.05 atomic % or greater and 0.15 atomic % or less, boron of 0.1 atomic % or greater and 0.2 atomic % or less, and titanium and an inevitable impurity,
- wherein
- the titanium aluminide alloy material has a metallographic structure comprising crystalline grains of lamellar structure, crystalline grains of γ-phase, and crystalline grains of β-phase.
Dependencies are inferred from the claim text.