Patent US4719080A successfully refreshed from Google Patents.
US4719080A
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Advanced high strength single crystal superalloy compositions
Assignee: RTX Corp
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Filing: 1985-06-10
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Granted: 1988-01-12
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Expires: 2005-06-10
Abstract
Abstract A superalloy composition and single crystal articles of the composition are described. The broad range is 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.045% C, 0-0.02% B, 0-0.1% Zr, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), balance essentially Ni. An equation is presented to select the most useful specific compositions from within this range. An exemplary preferred composition is 5.0% Cr, 10.0% Co, 2.0% Mo, 6.0% W, 3.1% Re, 5.6% Al, 9.0% Ta, 0.1% Hf, balance essentially Ni.
Inventors
- 👤 David N. Duhl
- 👤 Alan D. Cetel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:31
CPC Classifications
C; C30; C30B; C30B11/00; C30B29/00; C30B29/10; C30B29/52
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
119 words
A high strength, heat treatable, stable nickel base superalloy composition particularly suited for fabrication of single crystal articles, consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni; said composition characterized in that where -200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50(TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr=P (where all elemental values are in weight percent), P is from about 3360 to about 4850.
Claim 2
Dependent Claim
119 words
A high strength, heat treatable, stable nickel base superalloy composition particularly suited for fabrication of single crystal articles, consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni; said composition characterized in that where -200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50(TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr=P (where all elemental values are in weight percent), P is from about 3360 to about 4850.
Claim 3
Dependent Claim
19 words
A composition as in claim 1 in which the value of P is from about 3475 to about 4750.
Claim 4
Dependent Claim
19 words
A composition as in claim 1 in which the value of P is from about 3650 to about 4600.
Claim 5
Dependent Claim
65 words
A composition as in claim 1 having a composition consisting essentially of 3-8% Cr, 0.3-3.0% Mo, 3-8% W, 0-5.0% Re, 6-12% Ta, 4.5-6.5% Al, 6-12% Co, 0-0.005% B, 0-0.007% Zr, 0-0.02% C, 0-0.5% Hf, 0-0.4% Ti, 0-10% (Ru+Ir+Pt+Pd+Rh+Os), 0-0.1% Y, La, Ce, Sc, lanthanide or actinide series, balance Ni, and a value of P (as defined in claim 1) from about 3450 to about 4750.
Claim 6
Dependent Claim
50 words
A composition as in claim 1 having a composition consisting essentially of 4.0-7.5% Cr, 0.5-2.5% Mo, 3.5-7.5% W, 2.5-4% Re, 8-10% Ta, 5-6% Al, 8-12% Co, 0-0.3% Hf, 0-10% (Ru+Ir+Pt+Pd+Rh+Os), 0.005-0.05% Y, balance Ni, and a value of P as defined in claim 1 from about 3550 to about 4700.
Claim 7
Dependent Claim
17 words
A composition as in claim 5 having a value of P from about 3800 to about 4400.
Claim 8
Dependent Claim
130 words
A nickel base superalloy composition, suited for fabrication into a high strength single crystal article, consisting essentially of 4.0-7.5% Cr, 8-12% Co, 0.05-2.5% Mo, 3.5-7.5% W, 2.5-4.0% Re, 0-0.04% Ti, 5-6% Al, 8-10% Ta, 0-0.3% Hf, 0-10% of an element selected from the group consisting of Pt, Pd, Os, Rh, Ru, Ir and mixtures thereof, 0-0.005% B, 0-0.007% Zr, 0-0.02% C, 0-0.01% Y, La, Ce, Sc, lanthanide or actinide series, balance essentially Ni; said composition characterized in that where -200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50(TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr=P (where all elemental values are in weight percent), P is from about 3650 to about 4550.
Claim 9
Dependent Claim
130 words
A nickel base superalloy composition, suited for fabrication into a high strength single crystal article, consisting essentially of 4.0-7.5% Cr, 8-12% Co, 0.05-2.5% Mo, 3.5-7.5% W, 2.5-4.0% Re, 0-0.04% Ti, 5-6% Al, 8-10% Ta, 0-0.3% Hf, 0-10% of an element selected from the group consisting of Pt, Pd, Os, Rh, Ru, Ir and mixtures thereof, 0-0.005% B, 0-0.007% Zr, 0-0.02% C, 0-0.01% Y, La, Ce, Sc, lanthanide or actinide series, balance essentially Ni; said composition characterized in that where -200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50(TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr=P (where all elemental values are in weight percent), P is from about 3650 to about 4550.
Claim 10
Dependent Claim
17 words
A composition as in claim 7 which is free from intentional additions of C, B and Zr.
Claim 11
Dependent Claim
101 words
A nickel base superalloy single crystal article consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni; said composition characterized in that where P=-200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50 (TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr, P is from about 3360 to about 4850.
Claim 12
Dependent Claim
101 words
A nickel base superalloy single crystal article consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni; said composition characterized in that where P=-200 Cr+80 Mo-20 Mo 2 -250 Ti 2 -50 (TixTa)+15 Cb+200 W-14 W 2 +30 Ta-1.5 Ta 2 +2.5 Co+1200 Al-100 Al 2 +100 Re+1000 Hf-2000 Hf 2 +700 Hf 3 -2000 V-500 C-15000 B-500 Zr, P is from about 3360 to about 4850.
Claim 13
Dependent Claim
62 words
A single crystal article as in claim 9 having a composition consisting essentially of 3-8% Cr, 0.3-3.0% Mo, 3-8% W, 0-5.0% Re, 6-12% Ta, 4.5-6.5% Al, 6-12% Co, 0-0.005% B, 0-0.007% Zr, 0-0.02% C, 0-0.5% Hf, 0-0.4% Ti, 0-10% (Ru+Ir+Pt+Pd+Rh+Os), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni, and a value of P from about 3450 to about 4750.
Claim 14
Dependent Claim
46 words
A single crystal article as in claim 10 having a composition consisting essentially of 4.0-7.5% Cr, 0.5-2.5% Mo, 3.5-7.5% W, 2.5-4% Re, 8-10% Ta, 5-6% Al, 8-12% Co, 0-0.3% Hf, 0-10% (Ru+Ir+Pt+Pd+Rh+Os), 0.005-0.05 Y, balance Ni, and a value of P from about 3550 to 4700.
Claim 15
Dependent Claim
19 words
An article as in claim 9 in which the value of P lies between about 3650 and about 4600.
Claim 16
Dependent Claim
19 words
An article as in claim 10 in which the value of P lies between about 3550 and about 4650.
Claim 17
Dependent Claim
19 words
An article as in claim 10 in which the value of P lies between about 3700 and about 4500.
Claim 18
Dependent Claim
19 words
An article as in claim 11 in which the value of P lies between about 3650 and about 4550.
Claim 19
Dependent Claim
19 words
An article as in claim 11 in which the value of P lies between about 3800 and about 4400.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |