EP1054072A1 - Nickel-Basis-Superlegierung - Google Patents
Nickel-Basis-Superlegierung Download PDFInfo
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- EP1054072A1 EP1054072A1 EP99810443A EP99810443A EP1054072A1 EP 1054072 A1 EP1054072 A1 EP 1054072A1 EP 99810443 A EP99810443 A EP 99810443A EP 99810443 A EP99810443 A EP 99810443A EP 1054072 A1 EP1054072 A1 EP 1054072A1
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- ppm
- nickel
- based superalloy
- single crystal
- weight
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Definitions
- the invention relates to the field of materials technology. It affects one Nickel-based superalloy, especially for the production of single crystal components (SX alloy) or components with a directionally solidified structure (DS alloy), such as blades for gas turbines.
- SX alloy single crystal components
- DS alloy directionally solidified structure
- Such components made of nickel-based superalloys show high Temperatures have a very good material strength. This allows the Inlet temperature of gas turbines can be increased, increasing the efficiency of the Gas turbine rises.
- Grain boundaries are areas of high local disorder of the crystal lattice, because in In these areas the neighboring grains collide and thus a certain one Disorientation exists between the crystal lattices.
- Nitrogen is considered to be a harmful contaminant, one counteracting effect on the grain area and the formation of leads to non-metallic inclusions, for example titanium or tantalum nitrides. Grain defects can form on these inclusions (Metals Handbook, 10. Edition, 1990, ASM International, Vol. 1, p. 1000), which negatively affects the Properties of the alloys.
- the invention tries to avoid all these disadvantages. You have the task based on a nickel-based superalloy (SX or DS alloy) for Manufacture to create single crystal components that differ from the known prior art due to a larger small angle grain size tolerance distinguished and yet very good fatigue properties has low number of cycles and high stress temperatures.
- SX or DS alloy nickel-based superalloy
- the essence of the invention is that the nickel-based superalloy essentially from (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, 10-60 ppm N, balance nickel with There is contamination or that the nickel-based superalloy essentially from (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60
- the advantages of the invention can be seen, inter alia, in that the controlled slight addition of nitrogen to DS or SX nickel based superalloys the carbides have a favorable block-like morphology exhibit. This allows the carbon content to be compared to that known State of the art can be increased without this with a deterioration of Fatigue behavior at low load cycles and high temperatures connected is. The increased carbon content has a positive impact on the Small angle grain boundaries.
- Another advantage is that the block-like morphology of the Carbide the well-known phenomenon of long character-like carbides is eliminated, which oxidize very quickly along its length and therefore the Increase the degree of oxidation of the alloy, this long character-like carbides are often the places where there is a crack start shows.
- the alloy according to the invention is thus characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties.
- an advantage of the invention is that in contrast to the reactive elements such as Mg, Ce or other rare earths Nitrogen does not react with the mask shape during casting, so the Composition of the alloy over the length of the casting always is constant.
- the nickel-based superalloy consists of (in% by weight) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60ppm N, rest of nickel with impurities.
- a nickel-based superalloy is also advantageous (measured in % By weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities.
- These alloys are in themselves known nickel-based superalloys, the composition of which by targeted addition of nitrogen was modified.
- nickel-based superalloys described above a nitrogen content of 15 to 50 ppm, preferably 20 to 40 ppm. Above 60 ppm N, agglomerates of TiN particles form, which lead to a deterioration in properties, so this limit should not be exceeded.
- the invention also relates to single crystal components, for example Buckets of gas turbines made from those described above Alloys according to the invention are produced.
- FIG. 1 and 2 are micrographs of a DS alloy with directionally solidified Structure shown.
- Fig. 1 shows the alloy with 5 ppm nitrogen
- Fig. 2 shows the Alloy with 20 ppm nitrogen.
- nickel-based superalloys SX and DS alloys, i.e. Single crystal alloys and alloys with directed solidified structure controlled with small additions of nitrogen.
- a nickel-based superalloy according to the invention in particular for Manufacture of single crystal components or directionally solidified components consists of (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, and 10-60 ppm N, the rest nickel with Impurities.
- Another nickel-based superalloy according to the invention consists for example of (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, balance nickel with impurities.
- Such an alloy, but without the specified nitrogen content is known from US Pat. No. 5,759,301.
- the invention also relates to a nickel-based superalloy with (measured in Wt%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60 ppm N, balance Ni with impurities.
- CM186 LC nickel-based superalloy with (measured in Wt%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60 ppm N, balance Ni with impurities.
- Such an alloy, but without the specified nitrogen content, is under known as the CM186 LC.
- a further nickel-based superalloy according to the invention comprises (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities.
- C is a grain boundary element that has a positive impact on the Has small angle grain boundaries.
- Figures 1 and 2 illustrate this using an example. They show Micrographs of nickel-based superalloys with a directionally solidified structure (DS alloy) for single crystal components.
- DS alloy directionally solidified structure
- the alloys differ only in their carbon content and nitrogen content, as can be seen in the table below. The values are given in% by weight or in ppm (*). Cr Co W Al Ti Ta C. O 2 * N 2 * L1 11.95 8.95 8.95 3.60 2.00 5.65 0.076 10.0 20.0 VL2 11.89 8.96 8.95 3.75 2.01 5.81 0.064 10.0 5.0
- the alloys according to the invention are characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties.
- the vulnerability to crack start is reduced and the alloys are characterized by a very good fatigue behavior at high temperatures. Because the nitrogen during casting and solidification, which is relatively long with DS alloys lasts, does not react with the mask shape, is the chemical composition along the cast part advantageously constant and thus also the properties.
- the nitrogen content in the SX and DS alloys according to the invention is advantageously 15 to 50 ppm or 20 to 40 ppm.
- a maximum of 60 ppm N should not be exceeded, because then TiN agglomerates form, so that TiN is no longer finely divided and the carbides that form are consequently again adversely their morphology similar to larger Chinese characters Change carbides.
- N (in ppm) (0.01-0.2)
- C (in ppm) N (in ppm) (1.0-5.0)
- wt% Cr N (in ppm) (1.0-4.0)% by weight C + 3% by weight Ti + 0.7% by weight Ta + 0.11 (% by weight W +% by weight Re) + 0.6% by weight % Co - 0.682% by weight Al.
- the nitrogen can be added to the alloy in various forms, for example in solid form as TiN, ZrN, TaN, CrN, BN or other solid Nitride, but also as liquid nitrides.
- the alloy according to the invention can also nitrogen enriched material, e.g. B. Cr, Ti can be produced. Conceivable are still the production in a nitrogen atmosphere or nitrogen containing atmosphere or the injection or blowing over of this gas in or over the alloy as well as pouring the molten Alloy in a nitrogen atmosphere or a nitrogen-containing one The atmosphere.
- the alloy according to the invention is used in particular for the production of Single crystal components (single crystals or directionally solidified structure), for example, turbine blades used by gas turbines.
- Single crystal components single crystals or directionally solidified structure
- turbine blades used by gas turbines.
- Size Components made from the alloy according to the invention can also be divided into others Machines are installed where a stable structure at high temperatures and very good mechanical properties are needed.
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Cr | Co | W | Al | Ti | Ta | C | O2* | N2 * | |
L1 | 11.95 | 8.95 | 8.95 | 3.60 | 2.00 | 5.65 | 0.076 | 10.0 | 20.0 |
VL2 | 11.89 | 8.96 | 8.95 | 3.75 | 2.01 | 5.81 | 0.064 | 10.0 | 5.0 |
N (in ppm) = (0.01-0.2) C (in ppm)
N (in ppm) = (1.0-5.0) Gew.-% Cr
N (in ppm) = (1.0-4.0) Gew.-% C + 3 Gew.-% Ti + 0.7 Gew.-% Ta + 0.11 (Gew.-% W + Gew.-% Re) + 0.6 Gew.-% Co - 0.682 Gew.-% Al.
Claims (16)
- Nickel-Basis-Superlegierung, insbesondere zur Herstellung von Einkristall-Komponenten oder gerichtet erstarrten Komponenten, umfassend (gemessen in Gew.-%):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierung nach Anspruch 1, umfassend (gemessen in Gew.-%):
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7 % Ti
3% Ta
3% Re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierung nach Anspruch 1, umfassend (gemessen in Gew.-%):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierung, insbesondere zur Herstellung von Einkristall-Komponenten oder gerichtet erstarrten Komponenten, umfassend (gemessen in Gew.-%):
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% Re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 4 gekennzeichnet durch einen Stickstoffgehalt von 15-50 ppm.
- Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 4, gekennzeichnet durch einen Stickstoffgehalt von 20-40 ppm.
- Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass N (in ppm)=(0.01-0.2) ppm C.
- Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass N (in ppm)=(1.0-5.0) Gew.-% Cr.
- Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass N (in ppm)=(1.0-4.0) Gew.-% C + 3 Gew.-% Ti + 0.7 Gew.-% Ta + 0.11 (Gew.-% W + Gew.-% Re) + 0.6 Gew.-% Co - 0.682 Gew.-% Al.
- Nickel-Basis-Superlegierungs-Einkristallkomponente, bestehend aus (gemessen in Gew.-%):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierungs-Einkristallkomponente bestehend aus (gemessen in Gew.-%):
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7% Ti
3% Ta
3% Re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierungs-Einkristallkomponente, bestehend aus (gemessen in Gew.-%):
3.0-13.0% Cr
5.0-15.0% Co
0-0.3% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.02-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierungs-Einkristallkomponente, bestehend aus (gemessen in Gew.-%):
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% Re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Rest Nickel mit Verunreinigungen. - Nickel-Basis-Superlegierungs-Einkristallkomponente nach einem der Ansprüche 10 bis 13, gekennzeichnet durch einen Stickstoffgehalt von 15 bis 50 ppm, vorzugsweise 20 bis 40 ppm.
- Nickel-Basis-Superlegierungs-Einkristallkomponente nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass N (in ppm) =(0.01-0.2) ppm C oder N (in ppm)=(1.0-5.0) Gew.-% Cr oder N (in ppm)=(1.0-4.0) Gew.-% C + 3 Gew.-% Ti + 0.7 Gew.-% Ta + 0.11 (Gew.-% W + Gew.-% Re) + 0.6 Gew.-% Co - 0.682 Gew.-% Al.
- Nickel-Basis-Superlegierungs-Einkristallkomponente nach einem der Ansprüche 10 bis 15, dadurch gekennzeichnet, dass die Einkristallkomponente eine Schaufel einer Gasturbine ist.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59904846T DE59904846D1 (de) | 1999-05-20 | 1999-05-20 | Nickel-Basis-Superlegierung |
EP99810443A EP1054072B1 (de) | 1999-05-20 | 1999-05-20 | Nickel-Basis-Superlegierung |
US09/572,301 US6419763B1 (en) | 1999-05-20 | 2000-05-18 | Nickel-base superalloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99810443A EP1054072B1 (de) | 1999-05-20 | 1999-05-20 | Nickel-Basis-Superlegierung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1054072A1 true EP1054072A1 (de) | 2000-11-22 |
EP1054072B1 EP1054072B1 (de) | 2003-04-02 |
Family
ID=8242839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99810443A Expired - Lifetime EP1054072B1 (de) | 1999-05-20 | 1999-05-20 | Nickel-Basis-Superlegierung |
Country Status (3)
Country | Link |
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US (1) | US6419763B1 (de) |
EP (1) | EP1054072B1 (de) |
DE (1) | DE59904846D1 (de) |
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2000
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US6468367B1 (en) * | 1999-12-27 | 2002-10-22 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
US6565680B1 (en) * | 1999-12-27 | 2003-05-20 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
EP1426457A2 (de) * | 2002-12-06 | 2004-06-09 | General Electric Company | Superlegierung auf Nickelbasiskomposition und ihre Verwendung in Einkristallartikeln |
EP1426457A3 (de) * | 2002-12-06 | 2004-11-03 | General Electric Company | Superlegierung auf Nickelbasiskomposition und ihre Verwendung in Einkristallartikeln |
EP1914327A1 (de) * | 2006-10-17 | 2008-04-23 | Siemens Aktiengesellschaft | Nickel-Basis-Superlegierung |
WO2008046708A1 (en) * | 2006-10-17 | 2008-04-24 | Siemens Aktiengesellschaft | Nickel-base superalloys |
EP2314727B1 (de) | 2009-09-30 | 2016-03-23 | General Electric Company | Nickelbasierte Superlegierungen und Artikel |
WO2012135093A3 (en) * | 2011-03-30 | 2013-01-17 | General Electric Company | Nickel-base weld materials, processes of using, and components formed therewith |
CN102653832A (zh) * | 2012-04-19 | 2012-09-05 | 中国航空工业集团公司北京航空材料研究院 | 一种新型定向镍基高温合金 |
CN104736731A (zh) * | 2012-10-31 | 2015-06-24 | 通用电气公司 | 镍基超合金和制品 |
EP2942411A1 (de) * | 2014-05-08 | 2015-11-11 | Cannon-Muskegon Corporation | Hochfeste einkristalline Superlegierung auf der Basis von Nickel |
US9518311B2 (en) | 2014-05-08 | 2016-12-13 | Cannon-Muskegon Corporation | High strength single crystal superalloy |
DE102015223198A1 (de) * | 2015-11-24 | 2017-05-24 | Siemens Aktiengesellschaft | Nickelbasislegierung mit verbesserten Eigenschaften für additive Fertigungsverfahren und Bauteil |
CN107034387A (zh) * | 2016-02-04 | 2017-08-11 | 中国科学院金属研究所 | 一种高强抗热腐蚀低偏析镍基单晶高温合金 |
EP3426811B1 (de) | 2016-03-10 | 2021-05-26 | Nuovo Pignone Tecnologie SrL | Hoch oxidationsbeständige legierung, verfahren und gasturbinenanwendungen mit verwendung davon |
WO2018083065A1 (de) * | 2016-11-02 | 2018-05-11 | Siemens Aktiengesellschaft | Superlegierung ohne titan, pulver, verfahren und bauteil |
US11414727B2 (en) | 2016-11-02 | 2022-08-16 | Siemens Energy Global GmbH & Co. KG | Superalloy without titanium, powder, method and component |
EP3636784A1 (de) | 2018-10-10 | 2020-04-15 | Siemens Aktiengesellschaft | Nickelbasierte legierung |
WO2020074187A1 (en) | 2018-10-10 | 2020-04-16 | Siemens Aktiengesellschaft | Nickel based alloy |
US11441208B2 (en) | 2018-10-10 | 2022-09-13 | Siemens Energy Global GmbH & Co. KG | Nickel based alloy |
WO2020156779A1 (de) * | 2019-01-29 | 2020-08-06 | Siemens Aktiengesellschaft | Nickelbasislegierung für hochtemperaturanwendungen und verfahren |
EP4159342A4 (de) * | 2020-05-26 | 2023-04-12 | Hitachi Metals, Ltd. | Ni-basierte legierung für heissmatrize und heissschmiedematrize damit |
Also Published As
Publication number | Publication date |
---|---|
US6419763B1 (en) | 2002-07-16 |
DE59904846D1 (de) | 2003-05-08 |
EP1054072B1 (de) | 2003-04-02 |
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