US2024124956A1PendingUtilityA1
TiAl ALLOY MATERIAL AND TiAl INTERMEDIATE ALLOY MATERIAL
Est. expiryOct 14, 2042(~16.2 yrs left)· nominal 20-yr term from priority
C22C 14/00C22F 1/183
58
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Claims
Abstract
A TiAl alloy material containing: Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, and lamellar grains have an average grain size of 20 μm or more and 200 μm or less.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A TiAl alloy material comprising:
Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, wherein lamellar grains have an average grain size of 20 μm or more and 200 μm or less.
2 . The TiAl alloy material according to claim 1 , wherein
Al is contained in an amount of 42.5 atomic % or more and 44.0 atomic % or less.
3 . The TiAl alloy material according to claim 1 , wherein
Cu is contained in an amount of 0.7 atomic % or more and 2.0 atomic % or less.
4 . The TiAl alloy material according to claim 1 , wherein
Cu is contained in an amount of 0.9 atomic % or more and 1.5 atomic % or less.
5 . The TiAl alloy material according to claim 1 , wherein
Cu is contained in an amount of 0.9 atomic % or more and 1.2 atomic % or less.
6 . The TiAl alloy material according to claim 1 , wherein
Nb is contained in an amount of 4.5 atomic % or more and 6.0 atomic % or less.
7 . The TiAl alloy material according to claim 1 , wherein
the average grain size of the lamellar grains is 30 μm or more and 150 μm or less.
8 . The TiAl alloy material according to claim 1 , wherein
the average grain size of the lamellar grains is 30 μm or more and 100 μm or less.
9 . A TiAl intermediate alloy material for obtaining a TiAl alloy material, the TiAl intermediate alloy material comprising:
Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, wherein α grains have an average grain size of 20 μm or more and 200 μm or less.
10 . The TiAl intermediate alloy material according to claim 9 , wherein
Al is contained in an amount of 42.5 atomic % or more and 44.0 atomic % or less.
11 . The TiAl intermediate alloy material according to claim 9 , wherein
Cu is contained in an amount of 0.7 atomic % or more and 2.0 atomic % or less.
12 . The TiAl intermediate alloy material according to claim 9 , wherein
Cu is contained in an amount of 0.9 atomic % or more and 1.5 atomic % or less.
13 . The TiAl intermediate alloy material according to claim 9 , wherein
Cu is contained in an amount of 0.9 atomic % or more and 1.2 atomic % or less.
14 . The TiAl intermediate alloy material according to claim 9 , wherein
Nb is contained in an amount of 4.5 atomic % or more and 6.0 atomic % or less.
15 . The TiAl intermediate alloy material according to claim 9 , wherein
the average grain size of α grains is 30 μm or more and 150 μm or less.
16 . The TiAl intermediate alloy material according to claim 9 , wherein
the average grain size of α grains is 30 μm or more and 100 μm or less.Join the waitlist — get patent alerts
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