EP1223229A1 - Alliage à base de nickel pour la coulée des pièces en monocristal - Google Patents

Alliage à base de nickel pour la coulée des pièces en monocristal Download PDF

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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
Application number
EP01129921A
Other languages
German (de)
English (en)
Other versions
EP1223229B1 (fr
Inventor
Uwe Prof. Dr. Glatzel
Thomas Dr. Mack
Silke Dr. Wöllmer
Jürgen Dr. Wortmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP1223229A1 publication Critical patent/EP1223229A1/fr
Application granted granted Critical
Publication of EP1223229B1 publication Critical patent/EP1223229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
EP01129921A 2001-01-10 2001-12-15 Alliage à base de nickel pour la coulée des pièces en monocristal Expired - Lifetime EP1223229B1 (fr)

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 (fr) 2002-07-17
EP1223229B1 EP1223229B1 (fr) 2006-02-22

Family

ID=7670118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129921A Expired - Lifetime EP1223229B1 (fr) 2001-01-10 2001-12-15 Alliage à base de nickel pour la coulée des pièces en monocristal

Country Status (7)

Country Link
US (2) US6936116B2 (fr)
EP (1) EP1223229B1 (fr)
JP (1) JP4250363B2 (fr)
AT (1) ATE318329T1 (fr)
CA (1) CA2366997C (fr)
DE (2) DE10100790C2 (fr)
ES (1) ES2256147T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
US8696979B2 (en) 2006-03-31 2014-04-15 National Institute For Materials Science Ni-base superalloy and method for producing the same
US8216509B2 (en) * 2009-02-05 2012-07-10 Honeywell International Inc. Nickel-base superalloys
US20160214350A1 (en) 2012-08-20 2016-07-28 Pratt & Whitney Canada Corp. Oxidation-Resistant Coated Superalloy

Citations (2)

* Cited by examiner, † Cited by third party
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 (fr) * 1992-05-28 1993-12-09 United Technologies Corporation Superalliages de fonderie a base de monocristal resistant a l'oxydation

Family Cites Families (18)

* Cited by examiner, † Cited by third party
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 (fr) * 1986-04-03 1991-10-29 United Technologies Corporation Articles monocristallins a anisotropie reduite
CA1315572C (fr) * 1986-05-13 1993-04-06 Xuan Nguyen-Dinh Materiaux monocristallins a phase stable
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
KR20010031463A (ko) * 1997-10-27 2001-04-16 랭크 크리스토퍼 제이 주물 초합금을 접합하는 방법
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
KR100862346B1 (ko) * 2000-02-29 2008-10-13 제너럴 일렉트릭 캄파니 니켈계 초합금 및 그로부터 제조된 터빈 구성요소

Patent Citations (2)

* Cited by examiner, † Cited by third party
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 (fr) * 1992-05-28 1993-12-09 United Technologies Corporation Superalliages de fonderie a base de monocristal resistant a l'oxydation

Also Published As

Publication number Publication date
ES2256147T3 (es) 2006-07-16
US20020182100A1 (en) 2002-12-05
US6936116B2 (en) 2005-08-30
JP2002302724A (ja) 2002-10-18
DE50108994D1 (de) 2006-04-27
DE10100790A1 (de) 2002-07-18
ATE318329T1 (de) 2006-03-15
US20050254991A1 (en) 2005-11-17
CA2366997A1 (fr) 2002-07-10
EP1223229B1 (fr) 2006-02-22
JP4250363B2 (ja) 2009-04-08
CA2366997C (fr) 2013-07-02
DE10100790C2 (de) 2003-07-03

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