EP1223229A1 - Nickel-Basislegierung für die giesstechnische Herstellung einkristallin erstarrter Bauteile - Google Patents
Nickel-Basislegierung für die giesstechnische Herstellung einkristallin erstarrter Bauteile Download PDFInfo
- Publication number
- EP1223229A1 EP1223229A1 EP01129921A EP01129921A EP1223229A1 EP 1223229 A1 EP1223229 A1 EP 1223229A1 EP 01129921 A EP01129921 A EP 01129921A EP 01129921 A EP01129921 A EP 01129921A EP 1223229 A1 EP1223229 A1 EP 1223229A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- percent
- rhenium
- tungsten
- based alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 28
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 8
- 238000005266 casting Methods 0.000 title claims description 4
- 239000013078 crystal Substances 0.000 title description 3
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 19
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 15
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010937 tungsten Substances 0.000 claims abstract description 12
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011651 chromium Substances 0.000 claims abstract 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract 4
- 229910017052 cobalt Inorganic materials 0.000 claims abstract 4
- 239000010941 cobalt Substances 0.000 claims abstract 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract 4
- 239000010936 titanium Substances 0.000 claims abstract 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052735 hafnium Inorganic materials 0.000 claims abstract 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 2
- 239000011733 molybdenum Substances 0.000 claims abstract 2
- 229910052719 titanium Inorganic materials 0.000 claims abstract 2
- 238000005275 alloying Methods 0.000 abstract description 2
- 238000007792 addition Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 229910000601 superalloy Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 208000003351 Melanosis Diseases 0.000 description 1
- WIGAYVXYNSVZAV-UHFFFAOYSA-N ac1lavbc Chemical compound [W].[W] WIGAYVXYNSVZAV-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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%
Definitions
- the invention relates to a nickel-based alloy for casting production monocrystalline solidified components, according to the preamble of claim 1.
- Alloys of this type belong to a group of so-called super alloys, which can be used under high temperatures and under high mechanical stresses are and therefore used in particular as turbine blade materials in gas turbines become.
- Second and third generation Ni-base alloys for single-crystalline components contain approximately 3% and 6% by weight of the refractory element rhenium and have better creep properties than corresponding alloys of the first generation with no Re content.
- the refractory element Re affects the properties of superalloys in different ways. Re has a large atomic radius, diffuses very slowly due to this and seeps into the matrix. In addition to the effect of solid solution hardening of the matrix, the rhenium atoms tend to form clusters that hinder dislocation movement. Tungsten contributes significantly to solidification. The W content influences the distribution of Re on the matrix and the ⁇ '-excretion phase.
- the alloying element tantalum (Ta) contributes to solid solution strengthening and improves the cyclic oxidation behavior, but is mainly used in W- and Re-containing Ni-based alloys added to the so-called solidification in the direction of solidification Counteract Freckle formation.
- Negative properties of Ta sharp increase in density; it promotes the unwanted TCP phase formation and increases the ⁇ '-solution annealing temperature.
- the increase in creep resistance is accompanied by a simultaneous increase in density up to 9 g cm -3 for certain alloys with 6% by weight of Re. With Re-free alloys, the density can be reduced to 8 g cm -3 .
- Ni-based alloys with a high specific weight are only suitable to a limited extent for use in modern, fast-rotating aircraft turbines.
- CMSX-6 Re-free, low density superalloy
- this alloy Apart from the mechanical advantage of a relatively low density of 7.98 g cm -3 , this alloy also has disadvantages, such as a small heat treatment window and a strong tendency to recrystallize.
- the object of the invention is nickel-based alloys for the cast-technical manufacture of solidified components specify that by optimizing the proportions of rhenium and tungsten particularly Favorable material and thus component properties, such as low density, high mechanical strength including low tendency to creep and high Temperature resistance.
- component properties such as low density, high mechanical strength including low tendency to creep and high Temperature resistance.
- it is easy to cast and inexpensive Required heat treatment properties of the alloy.
- the rhenium content should be at least 2.3 percent by weight.
- the weight ratio of tungsten to rhenium should be at least 1.1 and at most 1.6 his.
- the respective alloy always contains more tungsten than rhenium and this in a defined ratio range.
- This material which internally as “L judges in E k ristall 94" is designated (LEK94), thus has the following composition in percent by weight: al from 6.2 to 6.8 Co from 7.2 to 7.8 Cr from 5.8 to 6.4 Hf from 0.05 to 0.15 Mo from 1.7 to 2.3 re from 2.3 to 2.6 Ta from 2.0 to 2.6 Ti from 0.9 to 1.1 W from 3.0 to 3.7 Ni Rest that means from 66.55 to 70.85
- any impurities in the form of other elements or compounds are here not taken into account and individual numerical values, e.g. the Ni content, yet change slightly.
- the proportions of the above elements can e.g. two decimal places (hundredths of a percent) have deviations that are self-evident for the specialist and have no relevant influence on the Have material properties.
- This special material "LEK94” is a high-alloy single crystal alloy Density developed for use in high-speed turbines. For optimization the detrimental requirements of high heat resistance and low density the alloy contents of elements Re and W were varied.
- LEK94 is a Re-containing single crystal alloy of low density in the range from 8.1 to 8.3 g cm -3 and high heat resistance. This material is characterized by good castability and a significantly large heat treatment window.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Triebwerke mit hohem Nebenstromverhältnis sind mit einem Untersetzungsgetriebe ausgerüstet, das zwischen den Fan auf der einen Seite und den Niederdruckverdichter und die Niederdruckturbine auf der anderen Seite geschaltet ist. Das Getriebe ermöglicht den Betrieb des Fans im optimalen Bereich bei langsamen Drehzahlen und bietet das Potenzial, den Verdichter und die Turbine bei höheren Drehzahlen und damit höheren Druckverhältnissen zu betreiben, als dies bei konventionellen Turbinen der Fall ist. Durch die höheren Umfangsgeschwindigkeiten steigen jedoch auch die mechanischen Lasten der Beschaufelung und der Scheiben der Niederdruckturbine.
Wolfram trägt erheblich zur Mischkristallverfestigung bei. Der W-Gehalt beeinflusst die Verteilung des Re auf die Matrix und die γ'-Ausscheidungsphase.
| Al | von 6,2 bis 6,8 |
| Co | von 7,2 bis 7,8 |
| Cr | von 5,8 bis 6,4 |
| Hf | von 0,05 bis 0,15 |
| Mo | von 1,7 bis 2,3 |
| Re | von 2,3 bis 2,6 |
| Ta | von 2,0 bis 2,6 |
| Ti | von 0,9 bis 1,1 |
| W | von 3,0 bis 3,7 |
| Ni | Rest, das bedeutet |
| von 66,55 bis 70,85 |
Claims (3)
- Nickel-Basislegierung für die gießtechnische Herstellung einkristallin erstarrter Bauteile, insbesondere von Schaufeln für schnelllaufende Turbinenstufen in Gasturbinen, welche die Elemente Rhenium (Re) und Wolfram (W) sowie weitere Elemente wie Aluminium, Chrom und Kobalt enthält, gekennzeichnet durch
einen Anteil an Rhenium (Re) von mindestens 2,3 Gewichtsprozent sowie ein Gewichtsverhältnis des Anteils an Wolfram (W) zu dem Anteil an Rhenium (Re) von mindestens 1,1 bis höchstens 1,6. - Nickel-Basislegierung nach Anspruch 1, gekennzeichnet durch einen Anteil an Rhenium (Re) von mindestens 2,3 bis höchstens 2,6 Gewichtsprozent.
- Nickel-Basislegierung nach Anspruch 2, gekennzeichnet durch einen Anteil an Wolfram (W) von mindestens 3,0 bis höchstens 3,7 Gewichtsprozent sowie folgende Anteile an weiteren Legierungselementen neben Nickel, Rhenium und Wolfram:
Aluminium (Al) von mindestens 6,2 bis höchstens 6,8 Gewichtsprozent; Kobalt (Co) von mindestens 7,2 bis höchstens 7,8 Gewichtsprozent; Chrom (Cr) von mindestens 5,8 bis höchstens 6,4 Gewichtsprozent; Hafnium (Hf) von mindestens 0,05 bis höchstens 0,15 Gewichtsprozent; Molybdän (Mo) von mindestens 1,7 bis höchstens 2,3 Gewichtsprozent; Tantal (Ta) von mindestens 2,0 bis höchstens 2,6 Gewichtsprozent; Titan (Ti) von mindestens 0,9 bis höchstens 1,1 Gewichtsprozent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10100790A DE10100790C2 (de) | 2001-01-10 | 2001-01-10 | Nickel-Basislegierung für die gießtechnische Herstellung einkristallin erstarrter Bauteile |
| DE10100790 | 2001-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1223229A1 true EP1223229A1 (de) | 2002-07-17 |
| EP1223229B1 EP1223229B1 (de) | 2006-02-22 |
Family
ID=7670118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01129921A Expired - Lifetime EP1223229B1 (de) | 2001-01-10 | 2001-12-15 | Nickel-Basislegierung für die giesstechnische Herstellung einkristallin erstarrter Bauteile |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US6936116B2 (de) |
| EP (1) | EP1223229B1 (de) |
| JP (1) | JP4250363B2 (de) |
| AT (1) | ATE318329T1 (de) |
| CA (1) | CA2366997C (de) |
| DE (2) | DE10100790C2 (de) |
| ES (1) | ES2256147T3 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10339595A1 (de) * | 2003-08-26 | 2005-04-07 | Siemens Ag | Verfahren zur Vorhersage und Steuerung der Vergießbarkeit von Flüssigstahl |
| US6969431B2 (en) | 2003-08-29 | 2005-11-29 | Honeywell International, Inc. | High temperature powder metallurgy superalloy with enhanced fatigue and creep resistance |
| US7453071B2 (en) * | 2006-03-29 | 2008-11-18 | Asml Netherlands B.V. | Contamination barrier and lithographic apparatus comprising same |
| WO2007122931A1 (ja) * | 2006-03-31 | 2007-11-01 | National Institute For Materials Science | Ni基超合金とその製造方法 |
| US8216509B2 (en) * | 2009-02-05 | 2012-07-10 | Honeywell International Inc. | Nickel-base superalloys |
| RU2439184C1 (ru) * | 2010-10-05 | 2012-01-10 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Жаропрочный сплав на никелевой основе для монокристаллического литья |
| US20160214350A1 (en) | 2012-08-20 | 2016-07-28 | Pratt & Whitney Canada Corp. | Oxidation-Resistant Coated Superalloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721540A (en) * | 1984-12-04 | 1988-01-26 | Cannon Muskegon Corporation | Low density single crystal super alloy |
| WO1993024683A1 (en) * | 1992-05-28 | 1993-12-09 | United Technologies Corporation | Oxidation resistant single crystal superalloy castings |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388124A (en) * | 1979-04-27 | 1983-06-14 | General Electric Company | Cyclic oxidation-hot corrosion resistant nickel-base superalloys |
| US4764225A (en) * | 1979-05-29 | 1988-08-16 | Howmet Corporation | Alloys for high temperature applications |
| JPS5610881A (en) * | 1980-07-02 | 1981-02-03 | Kubota Ltd | Pipe joint |
| US4518442A (en) * | 1981-11-27 | 1985-05-21 | United Technologies Corporation | Method of producing columnar crystal superalloy material with controlled orientation and product |
| US4574015A (en) * | 1983-12-27 | 1986-03-04 | United Technologies Corporation | Nickle base superalloy articles and method for making |
| DE3683091D1 (de) * | 1985-05-09 | 1992-02-06 | United Technologies Corp | Schutzschichten fuer superlegierungen, gut angepasst an die substrate. |
| CA1291350C (en) * | 1986-04-03 | 1991-10-29 | United Technologies Corporation | Single crystal articles having reduced anisotropy |
| CA1315572C (en) * | 1986-05-13 | 1993-04-06 | Xuan Nguyen-Dinh | Phase stable single crystal materials |
| US4781772A (en) * | 1988-02-22 | 1988-11-01 | Inco Alloys International, Inc. | ODS alloy having intermediate high temperature strength |
| US5240518A (en) * | 1990-09-05 | 1993-08-31 | General Electric Company | Single crystal, environmentally-resistant gas turbine shroud |
| JP2729531B2 (ja) * | 1990-09-14 | 1998-03-18 | 株式会社日立製作所 | ガスタービンブレード及びその製造方法並びにガスタービン |
| US5270123A (en) * | 1992-03-05 | 1993-12-14 | General Electric Company | Nickel-base superalloy and article with high temperature strength and improved stability |
| JP3164972B2 (ja) * | 1993-08-06 | 2001-05-14 | 株式会社日立製作所 | ガスタービン用動翼及びその製造法とそれを用いたガスタービン |
| JPH09170402A (ja) * | 1995-12-20 | 1997-06-30 | Hitachi Ltd | ガスタービン用ノズル及びその製造法とそれを用いたガスタービン |
| CA2307471A1 (en) * | 1997-10-27 | 1999-05-06 | Siemens Westinghouse Power Corporation | Method of bonding cast superalloys |
| JPH11310839A (ja) * | 1998-04-28 | 1999-11-09 | Hitachi Ltd | 高強度Ni基超合金方向性凝固鋳物 |
| JP2000144289A (ja) * | 1998-11-02 | 2000-05-26 | United Technol Corp <Utc> | 安定に熱処理可能なニッケル基超合金単結晶物体及び組成物並びにガスタービン用部品 |
| AU2001243302A1 (en) * | 2000-02-29 | 2001-09-12 | General Electric Company | Nickel base superalloys and turbine components fabricated therefrom |
-
2001
- 2001-01-10 DE DE10100790A patent/DE10100790C2/de not_active Expired - Fee Related
- 2001-12-15 EP EP01129921A patent/EP1223229B1/de not_active Expired - Lifetime
- 2001-12-15 DE DE50108994T patent/DE50108994D1/de not_active Expired - Lifetime
- 2001-12-15 AT AT01129921T patent/ATE318329T1/de not_active IP Right Cessation
- 2001-12-15 ES ES01129921T patent/ES2256147T3/es not_active Expired - Lifetime
-
2002
- 2002-01-03 CA CA2366997A patent/CA2366997C/en not_active Expired - Fee Related
- 2002-01-10 US US10/041,759 patent/US6936116B2/en not_active Expired - Lifetime
- 2002-01-10 JP JP2002003600A patent/JP4250363B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-04 US US11/071,301 patent/US20050254991A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721540A (en) * | 1984-12-04 | 1988-01-26 | Cannon Muskegon Corporation | Low density single crystal super alloy |
| WO1993024683A1 (en) * | 1992-05-28 | 1993-12-09 | United Technologies Corporation | Oxidation resistant single crystal superalloy castings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002302724A (ja) | 2002-10-18 |
| DE10100790C2 (de) | 2003-07-03 |
| ATE318329T1 (de) | 2006-03-15 |
| DE50108994D1 (de) | 2006-04-27 |
| CA2366997A1 (en) | 2002-07-10 |
| US20020182100A1 (en) | 2002-12-05 |
| DE10100790A1 (de) | 2002-07-18 |
| JP4250363B2 (ja) | 2009-04-08 |
| CA2366997C (en) | 2013-07-02 |
| US20050254991A1 (en) | 2005-11-17 |
| US6936116B2 (en) | 2005-08-30 |
| ES2256147T3 (es) | 2006-07-16 |
| EP1223229B1 (de) | 2006-02-22 |
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