USRE29920EExpiredUtility
High temperature alloys
Priority: Jul 29, 1975Filed: Feb 11, 1977Granted: Feb 27, 1979
Est. expiryJul 29, 1995(expired)· nominal 20-yr term from priority
C22C 19/055
56
PatentIndex Score
29
Cited by
13
References
2
Claims
Abstract
Nickel base superalloys in which critical amounts of boron are employed to enhance creep-rupture strength and ductility in the 1,300° F.-1,800° F. temperature range. Creep-rupture strength and ductility at temperatures around 1,800° F. also is enhanced by employing amounts of carbon below a critical upper limit. These alloys are particularly useful in the form of castings as gas turbine engine components.
Claims
exact text as granted — not AI-modifiedWhat is claimed is: .Badd..[.
1. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 5-22
Aluminum 0.2-8
Titanium 0.5-7
Boron 0.07-0.25
Carbon less than 0.05%
Cobalt 0.00-20
Columbium 0.00-3
Molybdenum 0.00-8
Tantalum 0.00-10
Vanadium 0.00-2
Tungsten 0.00-20
Rhenium 0.00-2
Zirconium 0.00-1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 35% to 85% by weight..]..Baddend. .[.2. The nickel base alloy of claim 1 wherein the carbon content is no more than 0.025% by weight..]. .Badd..[.3. The nickel base alloy of claim 1 wherein the boron content is about 0.075% to 0.2% by weight..]..Baddend. .Badd..[.4. A cast component for use in a gas turbine engine formed of the alloy of claim 1..]..Baddend. .Badd..[.5. The component of claim 4 in which said component is a turbine blade..]..Baddend. .Badd..[.6. The component of claim 4 in which said component is a disk..]..Baddend. .Badd..[.7. The component of claim 4 in which said component is an integral wheel comprising a disk and turbine blade..]..Baddend. .Badd..[.8. A cast component for use in a gas turbine engine formed of the alloy of claim 3..]..Baddend. .Badd..[.9. The component of claim 8 wherein said component is a turbine blade..]..Baddend. .Badd..[.10. The component of claim 8 wherein said component is a disk..]..Baddend. .Badd..[.11. The component of claim 8 wherein said component is an integral wheel comprising a disk and turbine blade..]..Baddend. .Badd..[..[.12. A shaped object of the alloy of claim .Badd..[.1.]. .Baddend..Iadd.50 .Iaddend.capable of withstanding an applied stress of 94,000 psi at 1,400° F. without rupture for a time in excess of 120 hours..]..]. .Badd..[..[.13. A shaped object of the alloy of claim .Badd..[.1.]..Baddend. .Iadd.12 .Iaddend.capable of withstanding an applied stress of 29,000 psi at 1,800° F. without rupture for a time in excess of 40 hours..]..]. .Badd..[..[.14. The alloy of claim .Badd..[.1.]..Baddend. .Iadd.50 .Iaddend. which contains, on a weight basis, about 6.0% to about 17% chromium, about 2% to about 8% aluminum, .[.about 0.75% to about 3% titanium, about 2% to about 17% cobalt,.]. and about 40% to 80% by weight
nickel..]..]. .Badd..[..[.15. The nickel base alloy of claim 14 wherein the carbon content is no more than 0.025% by weight..]..]..Baddend. .Badd..[..[.16. A cast component for use in a gas turbine engine formed of the alloy of claim 14..]..]..Baddend. .Badd..[..[.17. A cast component for use in a gas turbine engine formed of the alloy of claim 15..]..]..Baddend. .Badd..[..[.18. The alloy of claim .Badd.1.]..Baddend. .Iadd.50 .Iaddend.which contains, on a weight basis, about 5% to 12% chromium, about 4% to about 8% aluminum, .[.about 0.75% to about 2.5% titanium,.]. about 5% to about 15.5% cobalt, and about 40% to 80% by weight nickel..]..]. .Badd..[..[.19. The nickel base alloy of claim 18 wherein the carbon content is no more than 0.025 by weight..]..]..Baddend. .Badd..[..[.20. A cast component for use in a gas turbine engine formed of the alloy of claim 18..]..]..Baddend. .Badd..[..[.21. A cast component for use in a gas turbine engine formed of the alloy of claim 19..]..]..Baddend. .Badd..[..[.22. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 6 - 17
Aluminum 2 - 8
Titanium 0.75 - 3
Boron 0.05 - 0.3
Carbon 0.00 - 0.05
Cobalt 2 - 17
Columbium 0.25 - 3
Molybdenum 0.00 - 3
Tantalum 0.00 - 3
Tungsten 5 - 20
Zirconium 0.001 - 0.5
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 40% to 80% by weight..]..]..Baddend. .Badd..[..[.23. The nickel base alloy of claim 22 wherein the boron content is about 0.07% to about 0.25% by weight..]..]..Baddend. .Badd..[..[.24. The nickel base alloy of claim 22 wherein the carbon content is no more than 0.025 by weight..]..]..Baddend. .Badd..[..[.25. A cast component for use in a gas turbine engine formed of the alloy of claim 22..]..]..Baddend. .Badd..[..[.26. A cast component for use in gas turbine engine formed of the alloy of claim 24..]..]..Baddend. .Badd..[..[.27. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 8 - 10.25
Aluminum 4.75 - 5.5
Titanium 1 - 2.5
Boron 0.05 - 0.3
Carbon 0.00 - 0.05
Cobalt 8 - 12
Columbium 0.75 - 1.8
Tungsten 11 - 16
Zirconium 0.00 - 0.20
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy..]..]..Baddend. .Badd..[..[.28. The nickel base alloy of claim 27 wherein the boron content is about 0.07% to
about 0.25% by weight..]..]..Baddend. .Badd..[..[.29. The nickel base alloy of claim 27 wherein the carbon content is no more than 0.025% by weight..]..]..Baddend. .Badd..[..[.30. A cast component for use in a gas turbine engine formed of the alloy of claim 27..]..]..Baddend. .Badd..[..[.31. The component of claim 30 in which said component is a turbine blade..]..]..Baddend. .Badd..[..[.32. A cast component for use in a gas turbine engine formed of the alloy of claim 29..]..]..Baddend. .Badd..[..[.33. The component of claim 32 wherein said component is a turbine blade..]..]..Baddend. .Badd..[..[.34. A shaped object of the alloy of claim 27 capable of withstanding an applied stress of 94,000 psi at 1,400° F. without rupture for a time in excess of 120 hours..]..]..Baddend. .Badd..[..[.35. A shaped object of the alloy of claim 29 capable of withstanding an applied stress of 29,000 psi at 1,800° F. without rupture for a time in excess of 40 hours..]..]..Baddend. .Badd..[..[.36. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 5 - 12
Aluminum 4 - 8
Titanium 0.75 - 2.5
Boron 0.05 - 0.3
Carbon 0.00 - 0.05
Cobalt 5 - 15.5
Columbium 0.00 - 0.20
Molybdenum 3 - 8
Tantalum 2.3 - 10
Tungsten 0.00 - 2.5
Zirconium 0.00 - 1
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 40% to 80% by weight..]..]..Baddend. .Badd..[..[.37. The nickel base alloy of claim 36 wherein the boron content is about 0.07% to about 0.25% by weight..]..]..Baddend. .Badd..[..[.38. The nickel base alloy of claim 36 wherein the carbon content is no more than 0.025% by weight..]..]..Baddend. .Badd..[..[.39. A cast component for use in a gas turbine engine formed of the alloy of claim 36..]..]..Baddend. .Badd..[..[.40. A cast component for use in a gas turbine engine formed of the alloy of claim 38..]..]..Baddend. .Badd..[..[.41. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 7.5 - 8.5
Aluminum 5.75 - 6.25
Titanium 0.8 - 1.2
Boron 0.05 - 0.3
Carbon 0.00 - 0.05
Cobalt 9.5 - 10.5
Molybdenum 5.75 - 6.25
Tantalum 4.0 - 4.5
Zirconium 0.05 - 0.10
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy..]..]..Baddend. .Badd..[..[.42. The nickel base alloy of claim 41 wherein the boron content is about 0.07% to about 0.25% by weight..]..]..Baddend. .Badd..[..[.43. The nickel base alloy of claim 41 wherein the carbon content is no more than 0.025% by
weight..]..]..Baddend. .Badd..[..[.44. A cast component for use in a gas turbine engine formed of the alloy of claim 41..]..]..Baddend. .Badd..[..[.45. The component of claim 44 in which said component is a turbine blade..]..]..Baddend. .Badd..[..[.46. A cast component for use in a gas turbine engine formed of the alloy of claim 43..]..]..Baddend. .Badd..[..[.47. The component of claim 46 wherein said component is a turbine blade..]..]..Baddend. .Badd..[..[.48. A shaped object of the alloy of claim 41 capable of withstanding an applied stress of 94,000 psi at 1,400° F. without rupture for a time in excess of 120 hours..]..]..Baddend. .Badd..[..[.49. A shaped object of the alloy of claim 43 capable of withstanding an applied stress of 29,000 psi at 1,800° F. without rupture for a time in excess of 40 hours..]..]..Baddend. .Badd..[..[.50. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
ELEMENTS PERCENT
______________________________________
Chromium 5-22
Aluminum 0.2-8
Titanium 0.5-7
Boron 0.05-0.3
Carbon less than 0.05
Cobalt 2-17
Columbium 0.00-3
Molybdenum 0.00-8
Tantalum 0.00-10
Vanadium 0.00-2
Tungsten 0.00-20
Rhenium 0.00-2
Zirconium 0.00-1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 35% to 85% by weight..]..]..Baddend. .Badd..[..[.51. The nickel base alloy of claim 50 wherein the boron content is about 0.07% to about 0.25% by weight..]..]..Baddend. .Badd..[..[.52. The nickel base alloy of claim 51 wherein the carbon content is no more than 0.025% by weight..]..]..Baddend. .Badd..[..[.53. A cast component for use in a gas turbine engine formed of the alloy of claim 50..]..]..Baddend. .Iadd..[..[.54. The nickel base alloy of claim 50 wherein the molybdenum content is 0.00 - 3% and the tungsten content is 5 - 20%..]..]..Iaddend. .Iadd..[..[.55. The nickel base alloy of claim 50 wherein the molybdenum content is 3 - 8%, the tungsten content is < 2.5%, and the tantalum content is 2.3 - 10%..]..]..Iaddend. .Iadd..[..[.56. The nickel base alloy of claim 50 wherein the cobalt content is 5 to 15.5%
cobalt..]..]..Iaddend. .Iadd.57. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 5-12
Aluminum 2-8
Titanium 0.5-7
Boron 0.05-0.3
Carbon less than 0.05%
Cobalt 2-17
Columbium 0.00-3
Molybdenum 0.00-8
Tantalum 0.00-3
Vanadium 0.00-2
Tungsten <2.5
Rhenium 0.00-2
Zirconium 0.00-1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight..Iaddend. .Iadd.58. The nickel base alloy of claim 57 wherein the tungsten and vanadium contents are
essentially 0..Iaddend. .Iadd.59. A cast component for use in a gas
turbine engine formed of the alloy of claim 57..Iaddend. .Iadd.60. The nickel base alloy of claim 57 wherein the carbon content is no more than 0.025% by weight..Iaddend. .Iadd..[..[.61. A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
Elements Percent
______________________________________
Chromium 5-22
Aluminum 0.2-8
Titanium 0.5-7
Boron 0.05-0.3
Carbon less than 0.05
Columbium 0.00-3
Cobalt 5-15.5
Molybdenum <3
Tantalum 0-10
Vanadium 0.00-2
Tungsten 0.00-20
Rhenium 0.00-2
Zirconium 0.00-1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 35% to 85% by weight..]..]..Iaddend. .Iadd..[..[.62. The nickel base alloy of claim 61 wherein the carbon content is no more than 0.025% by weight..]..]..Iaddend. .Iadd..[..[.63. The nickel base alloy of claim 61 wherein the chromium content is 5 - 12% and the tungsten content is 5 - 20%..]..]..Iaddend. .Iadd..[..[.64. The alloy of claim 61, which contains, on a weight basis, about 2.3% to about 10% tantalum..]..]..Iaddend. .Iadd..[..[.65. The alloy of claim 64 which contains, on a weight basis, 5 - 20% tungsten..]..]..Iaddend. .Iadd..[..[.66. The alloy of claim 61, which contains, on a weight basis, less than 3% tantalum..]..]..Iaddend. .Iadd..[..[.67. The alloy of claim 14 which contains, on a weight basis, 0 to about 3% molybdenum, 0 to about 3% tantalum, about 5% to about 20% tungsten, and about 0.001 to about 0.5% zirconium..]..]..Iaddend. .Iadd..[..[.68. The alloy of claim 18, which contains, on a weight basis, about 3% to about 8% molybdenum, about 2.3%
to about 10% tantalum, and 0 to about 2.5% tungsten..]..]..Iaddend. 69. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd.ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.0 - 0.25
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd.2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 70. .Badd.The nickel base alloy of claim 69 wherein the carbon content is less than 0.02% by weight.
.Baddend. 71. .Badd.The nickel base alloy of claim 69 wherein the molybdenum content is 0.00-3% and the tungsten content is 5-20%. .Baddend.
2. .Badd.The nickel base alloy of claim 69 wherein the molybdenum content is 3-8%, the tungsten content is < 2.5%, and the tantalum content is
2.3-10%. .Baddend. 73. .Badd.The nickel base alloy of claim 69 wherein the
cobalt content is 5 to 15.5% cobalt. .Baddend. 74. .Badd.The nickel base
alloy of claim 73 wherein the molybdenum content is < 3. .Baddend. 75. .Badd.The nickel base alloy of claim 74 wherein the chromium content
is 5-12% and the tungsten content is 5-20%. .Baddend. 76. .Badd.The alloy of claim 74, which contains, on a weight basis, about 2.3% to about 10%
tantalum. .Baddend. 77. .Badd.The alloy of claim 76 which contains, on a
weight basis, 5-20% tungsten. .Baddend. 78. .Badd.The alloy of claim 74,
which contains, on a weight basis, less than 3% tantalum. .Baddend. 79. .Badd.The alloy of claim 69 which contains, on a weight basis, about 6.0% to about 17% chromium, about 2% to about 8% aluminum, and about 40%
to 80% by weight nickel. .Baddend. 80. .Badd.The nickel base alloy of claim 79 wherein the carbon content is no more than 0.025% by weight.
.Baddend. 81. .Badd.The alloy of claim 79 which contains, on a weight basis, 0 to about 3% molybdenum, 0 to about 3% tantalum, about 11% to about 16% tungsten, and about 0.001 to about 0.5% zirconium. .Baddend.
.Badd.The alloy of claim 69 which contains, on a weight basis, about 5% to 12% chromium, about 4% to about 8% aluminum, about 5% to about 15.5%
cobalt, and about 40% to 80% by weight nickel. .Baddend. 83. .Badd.The nickel base alloy of claim 82 wherein the carbon content is no more than
0.025% by weight. .Baddend. 84. .Badd.The alloy of claim 82 which contains, on a weight basis, about 3% to about 8% molybdenum, about 2.3%
to about 10% tantalum, and 0 to about 2.5% tungsten. .Baddend. 85. .Badd.A cast component for use in a gas turbine engine formed of the alloy of
claim 69. .Baddend. 86. .Badd.A shaped object of the alloy of claim 69 capable of withstanding an applied stress of 94,000 psi at 1,400°
F. without rupture for a time in excess of 120 hours. .Baddend. 87. .Badd.The nickel base alloy of claim 69 wherein the following elements are in the weight percent ranges set forth: ______________________________________
.Badd.ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.6 - 17
.Badd.Aluminum .Badd.2 - 8
.Badd.Columbium .Badd.0.25 - 3
.Badd.Molybdenum .Badd.0 - 3
.Badd.Tantalum .Badd.0 - 3
.Badd.Tungsten .Badd.5 - 20
.Badd.Zirconium .Badd.0.001 - 0.5
______________________________________
88. .Badd.The nickel base alloy of claim 69 wherein the following elements are in the weight percent ranges set forth: ______________________________________
.Badd.ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.8 - 10.25
.Badd.Aluminum .Badd.4.75 - 5.5
.Badd.Cobalt .Badd.8 - 12
.Badd.Columbium .Badd.0.75 - 1.8
.Badd.Tungsten .Badd.11 - 16
.Badd.Zirconium .Badd.0.00 - 0.20
______________________________________
89. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd. 5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.07 - 0.25
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd. 2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount of from about 35% to 85% by weight, said boron and carbon contents being effective to enhance creep-rupture strength and ductility of said alloy in the 1300° F to 1500° F temperature range without substantially deleteriously affecting creep-rupture strength and ductility of said alloy at temperatures in the 1700° F to 1900° F
range. .Baddend. 90. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.05 - 0.3
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd.2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.1.5 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 91. .Badd.The nickel base alloy of claim 90 wherein the boron content is about 0.07% to about 0.25%
by weight. .Baddend. 92. .Badd.The nickel base alloy of claim 90 wherein
the carbon content is less than 0.02% by weight. .Baddend. 93. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd. 5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.05 - 0.3
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd. 2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.2.3 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 94. .Badd.The nickel base alloy of claim 93, which contains, on a weight basis, about 5 to about
15.5 cobalt and < 3 molybdenum. .Baddend. 95. .Badd.The alloy of claim
94, which contains, on a weight basis, 5-20% tungsten. .Baddend. 96. .Badd.The nickel base alloy of claim 93 wherein the molybdenum content
is 3-8% and the tungsten content is 0 to 2.5%. .Baddend. 97. .Badd.The alloy of claim 96 which contains, on a weight basis, about 5% to 12% chromium, about 4% to about 8% aluminum, about 5% to about 15.5% cobalt,
and about 40% to 80% by weight nickel. .Baddend. 98. .Badd.The nickel base alloy of claim 97 which contains, on a weight basis, 0 to 0.2 columbium.
.Baddend. 99. .Badd.The nickel base alloy of claim 97 wherein the following elements are in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.7.5 - 8.5
.Badd.Aluminum .Badd.5.75 - 6.25
.Badd.Cobalt .Badd. 9.5 - 10.5
.Badd.Molybdenum .Badd.5.75 - 6.25
.Badd.Tantalum .Badd. 4 - 4.5
.Badd.Zirconium .Badd.0.05 - 0.10
______________________________________
100. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.07 - 0.25
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd.2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.3 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 101. .Badd.The nickel base alloy of claim 100 wherein said boron and carbon contents are effective to enhance creep-rupture strength and ductility of said alloy in the 1300° F. to 1500° F. temperature range without substantially deleteriously affecting creep-rupture strength and ductility of said alloy at temperatures in the 1700° F. to 1900° F. range. .Baddend.
02. .Badd.The nickel base alloy of claim 100 wherein the carbon content is
less than 0.02% by weight. .Baddend. 103. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd. 5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.0.5 - 7
.Badd.Boron .Badd.0.05 - 0.3
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd. 2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 2.5
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 104. .Badd.The nickel base alloy of claim 103 wherein the boron content is about 0.07% to about 0.25%
by weight. .Baddend. 105. .Badd.The nickel base alloy of claim 103 wherein
the carbon content is less than 0.02% by weight. .Baddend. 106. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd. ELEMENTS .Badd.PERCENT
______________________________________
.Badd.Chromium .Badd.5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd.Titanium .Badd.4.56 - 7
.Badd.Boron .Badd.0.05 - 0.3
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd.2 - 17
.Badd.Columbium .Badd.0.00 - 3
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 107. .Badd.The nickel base alloy of claim 106 wherein the boron content is about 0.07% to about 0.25%
by weight. .Baddend. 108. .Badd.The nickel base alloy of claim 106
wherein the carbon content is less than 0.02% by weight. .Baddend. 109. .Badd.A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth: ______________________________________
.Badd.ELEMENTS .Badd. PERCENT
______________________________________
.Badd.Chromium .Badd.5 - 22
.Badd.Aluminum .Badd.0.2 - 8
.Badd. Titanium .Badd.0.5 - 7
.Badd. Boron .Badd.0.05 - 0.3
.Badd.Carbon .Badd.less than 0.05
.Badd.Cobalt .Badd. 2 - 17
.Badd.Columbium .Badd.< 0.20
.Badd.Molybdenum .Badd.0.00 - 8
.Badd.Tantalum .Badd.0.00 - 10
.Badd.Vanadium .Badd.0.00 - 2
.Badd.Tungsten .Badd.0.00 - 20
.Badd.Rhenium .Badd.0.00 - 2
.Badd.Zirconium .Badd.0.00 - 1.00
______________________________________
the balance of the alloy being essentially nickel and minor amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy, said nickel being present in an amount
of from about 35% to 85% by weight. .Baddend. 110. .Badd.The nickel base alloy of claim 109 wherein the boron content is about 0.07% to about 0.25%
by weight. .Baddend. 111. .Badd.The nickel base alloy of claim 109 wherein the carbon content is less than 0.02% by weight.Join the waitlist — get patent alerts
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