EP3091095A1 - Superalliage à base de nickel sans rhénium à faible densité - Google Patents

Superalliage à base de nickel sans rhénium à faible densité Download PDF

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Publication number
EP3091095A1
EP3091095A1 EP15166317.6A EP15166317A EP3091095A1 EP 3091095 A1 EP3091095 A1 EP 3091095A1 EP 15166317 A EP15166317 A EP 15166317A EP 3091095 A1 EP3091095 A1 EP 3091095A1
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EP
European Patent Office
Prior art keywords
weight
nickel
alloy
based alloy
alloy according
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
EP15166317.6A
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German (de)
English (en)
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EP3091095B1 (fr
Inventor
Thomas GÖHLER
Ralf RETTIG
Robert F. Singer
Steffen Neumeier
Nils Ritter
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MTU Aero Engines AG
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MTU Aero Engines AG
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Priority to ES15166317.6T priority Critical patent/ES2682362T3/es
Priority to EP15166317.6A priority patent/EP3091095B1/fr
Priority to US15/142,068 priority patent/US20170058383A1/en
Publication of EP3091095A1 publication Critical patent/EP3091095A1/fr
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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
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/023—Alloys based on nickel
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Definitions

  • the present invention relates to a nickel-base alloy which is substantially free of rhenium but at the same time achieves the creep resistance properties of the second-generation nickel-base superalloys and has a reduced density compared to comparable alloys.
  • nickel-base superalloys are used for example as blade materials, since these materials still have sufficient strength for the high mechanical loads even at high operating temperatures.
  • turbine blades are exposed in stationary gas turbines or jet engines in commercial aircraft exhaust gas flow at temperatures of up to 1500 ° C and are subject to very high mechanical loads due to centrifugal forces. Under these conditions, it is particularly important that the creep resistance of the material used meets the requirements.
  • turbine blades In order to increase creep resistance, turbine blades have also been produced monocrystalline for several decades in order to further improve creep resistance by avoiding grain boundaries.
  • the alloys In the nickel-base superalloys of the so-called second and third generation currently in use, the alloys usually have the chemical element rhenium in a proportion of three or six percent by weight, since rhenium further improves the creep resistance.
  • the EP 2 725 110 A1 a nickel-based alloy that is substantially free of rhenium and has a solidus temperature of greater than 1320 ° C, wherein at temperatures of 1050 ° C to 1100 ° C excretions of a ⁇ '-phase in a ⁇ matrix in a proportion of 40 to 50 Vol .-% are present, the ⁇ / ⁇ 'mismatch at temperatures of 1050 ° C to 1100 ° C in the range of -0.15% to -0.25% and the tungsten content in the ⁇ -matrix is greater than in the excreted ⁇ '-phases.
  • the alloy has the following chemical composition: aluminum of 11 to 13 at.%, Cobalt of 4 to 14 at.%, Chromium of 6 to 12 at.%, Molybdenum of 0.1 to 2 at.%, Tantalum from 0.1 to 3.5 at .-%, titanium from 0.1 to 3.5 at .-%, tungsten from 0.1 to 3 at .-%, and the balance nickel and unavoidable impurities.
  • the alloy should have the lowest possible density and good solution heatability, be economical and efficient to produce and monocrystalline or directionally solidified and compared to the in EP 2 725 110 A1 Reinforced rhenium-free nickel-based alloy improved with comparable creep resistance Have properties, in particular a lower density, a lower proportion of Resteutikikum and improved Amsterdamsglühbarkeit.
  • a nickel-base alloy may have the following chemical composition: aluminum of 4.1 to 7.7 wt%, cobalt of 0 to 16.8 wt%, chromium of 6 to 11.8 wt% , Molybdenum from 3.6 to 11.3 wt%, tantalum from 0 to 3.9 wt%, titanium from 0 to 3.6 wt%, tungsten from 0 to 11.3 wt% , Carbon of 0 to 0.05 wt.%, Phosphorus of 0 to 0.015 wt.%, Copper of 0 to 0.05 wt.%, Zirconium of 0 to 0.015 wt.%, Silicon of 0 to 0 , 01% by weight, sulfur from 0 to 0.001% by weight, iron from 0 to 0.15% by weight, manganese from 0 to 0.05% by weight, boron from 0 to 0.003% by weight , Hafnium from 0 to 0.15 wt .
  • a nickel-based alloy according to the present invention may have the following chemical composition: aluminum of 4.7 to 5.7% by weight, cobalt of 2.6 to 13.6% by weight, chromium of 6.3 to 7.3% by weight, molybdenum from 3.7 to 4.7% by weight, tantalum from 0 to 0.5% by weight, titanium from 2.8 to 3.6% by weight, tungsten from 7.4 to 8.4 wt .-%, carbon from 0 to 0.05 wt .-%, phosphorus from 0 to 0.015 wt .-%, copper from 0 to 0.05 wt .-%, zirconium from 0 to 0.015% by weight, silicon from 0 to 0.01% by weight, sulfur from 0 to 0.001% by weight, iron from 0 to 0.15% by weight, manganese from 0 to 0.05% by weight. %, Boron from 0 to 0.003% by weight, hafnium from 0 to 0.15% by weight, yttrium from
  • a nickel-based alloy according to the present invention may have the following chemical composition: aluminum of 5.0 to 5.4 wt .-%, cobalt of 2.9 to 13.3 wt .-%, chromium of 6.6 to 7% by weight, molybdenum from 4 to 4.4% by weight, tantalum from 0 to 0.2% by weight, titanium from 3.1 to 3.5% by weight, tungsten from 7.7 to 8.1% by weight, carbon from 0 to 0.05% by weight, phosphorus from 0 to 0.015% by weight, copper from 0 to 0.05% by weight, zirconium from 0 to 0.015% by weight.
  • Silicon from 0 to 0.01% by weight, sulfur from 0 to 0.001% by weight, iron from 0 to 0.15% by weight, manganese from 0 to 0.05% by weight, boron from 0 to 0.003% by weight, hafnium from 0 to 0.15% by weight, yttrium from 0 to 0.002% by weight, as well as the balance nickel and unavoidable impurities.
  • a nickel-based alloy according to the present invention may have a cobalt content of less than 5% by weight, preferably less than 4% by weight. Since cobalt has a lower molar mass than nickel, a relatively low cobalt content has an advantageous effect on the overall density of the nickel-based alloy, and thus also on the total weight of the target component produced from this alloy.
  • the nickel-based alloy according to the invention may also have a cobalt content of greater than 11% by weight, preferably greater than 13% by weight.
  • a correspondingly high cobalt content has a positive effect on the segregation during solidification and the microstructural stability against the undesired formation of TCP phases.
  • the nickel-based alloy according to the present invention contains at least 67 at.%, In particular at least 68 at.%, Nickel.
  • the alloy elements are to be understood, the addition of which is not intended, but which can not be prevented for technical reasons or only with extremely great effort.
  • the following elements may still be present in the form of trace elements, the content of which is limited to the following ranges: bismuth from 0 to 0.00003% by weight, selenium from 0 to 0.0001% by weight, Thallium from 0 to 0.00005 wt%, lead from 0 to 0.0005 wt%, and tellurium from 0 to 0.0001 wt%.
  • alloy according to the invention in particular articles such as components of gas turbines, preferably turbine blades, and the like can be prepared, which may be monocrystalline or directionally solidified.
  • the attached figure shows a Larson-Miller plot to illustrate the creep resistance of the alloy according to the invention compared to known alloys.
  • alloy according to the invention was produced, the composition of which can be taken from the table below (alloy 1). Alloys 2 and 3 were chosen as comparison alloys, with the alloy 3 in the chemical composition essentially corresponding to that of the rhenium-containing material CMSX-4, and the alloy 2 corresponding to that in EP 2 725 110 A1 disclosed rhenium-free nickel base superalloy is. The components of the alloys are given in the table in weight percent (balance nickel and unavoidable impurities). Alloy no. al Co Cr Not a word re Ta Ti W 1 5.2 3.1 6.8 4.2 - - 3.3 7.9 2 4.8 8.6 5.0 1.4 - 10.1 1.3 8.8 3 5.6 9.0 6.5 0.6 3.0 6.5 1.0 6.0
  • the alloy 1 according to the invention was produced in a columnar crystal structure on a laboratory Bridgman casting installation in a three-bar geometry.
  • the rods had a diameter of 12 mm each and a length of 180 mm each and showed a typical dendritic microstructure with a dendrite spacing of about 230 ⁇ m.
  • the proportion of residual eutectic is very low at 2.8% (alloys 2 and 3 have a residual eutectic of 6.5% and 9.0%, respectively).
  • alloy 1 has a typical fully cubic ⁇ 'phase morphology.
  • Alloy 1 (L1) according to the present invention has a creep resistance substantially equal to that of rhenium-free alloy 2 (L2), the creep resistances of these alloys being similar to the creep resistance of Alloy 3 (L3) corresponds to a second generation nickel base superalloy. In comparison to the alloys 2 and 3, however, the alloy 1 in particular has a lower density. Analysis of the microstructure of the inventive alloy 1 after creep revealed no TCP phase formation.
  • nickel-based superalloys can be provided by the teachings of the present invention which can dispense with the hard-to-obtain element rhenium but nevertheless provide high temperature mechanical properties such as creep resistance as known rhenium-containing alloys and also have a lower density than known rhenium-containing and rhenium-free alloys.
  • alloy 1 may undergo one or both of the following precipitation heat treatments after solution annealing: Excretion heat treatment 1: temperature heating rate hold time 1000 ° C 4 K / min 1050 ° C 1K / min 1050 ° C 1h 20 ° C rapid cooling Excretion heat treatment 2: temperature heating rate hold time 840 ° C 4 K / min 870 ° C 1K / min 870 ° C 24 hours 20 ° C rapid cooling Longer annealing times than 2 hours at 1050 ° C or higher temperatures lead to an aging of the microstructure.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP15166317.6A 2015-05-05 2015-05-05 Superalliage à base de nickel sans rhénium à faible densité Not-in-force EP3091095B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES15166317.6T ES2682362T3 (es) 2015-05-05 2015-05-05 Superaleación a base de níquel exenta de renio con baja densidad
EP15166317.6A EP3091095B1 (fr) 2015-05-05 2015-05-05 Superalliage à base de nickel sans rhénium à faible densité
US15/142,068 US20170058383A1 (en) 2015-05-05 2016-04-29 Rhenium-free nickel base superalloy of low density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15166317.6A EP3091095B1 (fr) 2015-05-05 2015-05-05 Superalliage à base de nickel sans rhénium à faible densité

Publications (2)

Publication Number Publication Date
EP3091095A1 true EP3091095A1 (fr) 2016-11-09
EP3091095B1 EP3091095B1 (fr) 2018-07-11

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EP (1) EP3091095B1 (fr)
ES (1) ES2682362T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112760525A (zh) * 2019-11-01 2021-05-07 利宝地工程有限公司 高γ′镍基超级合金、其用途及制造涡轮发动机构件的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2554898B (en) 2016-10-12 2018-10-03 Univ Oxford Innovation Ltd A Nickel-based alloy
JP6802991B2 (ja) * 2018-12-17 2020-12-23 日立金属株式会社 Ｎｉ基超耐熱合金
CN111235434B (zh) * 2020-03-02 2021-07-30 北京钢研高纳科技股份有限公司 一种高温使用的镍基变形高温合金轮盘锻件的制备方法

Citations (13)

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Publication number Priority date Publication date Assignee Title
EP0962542A1 (fr) 1998-05-01 1999-12-08 United Technologies Corporation Superalliage monocrystaline à base de nickel de traitement thermique et l'article
US6054096A (en) 1982-12-27 2000-04-25 United Technologies Corporation Stable heat treatable nickel superalloy single crystal articles and compositions
WO2009032578A1 (fr) 2007-08-31 2009-03-12 General Electric Company Compositions de superalliage au nickel à faible teneur en rhénium, et articles en superalliage
WO2009032579A1 (fr) 2007-08-31 2009-03-12 General Electric Company Composition de superalliage au nickel sensiblement exempte de rhénium, et articles en superalliage
US20100135846A1 (en) 2008-12-01 2010-06-03 United Technologies Corporation Lower cost high strength single crystal superalloys with reduced re and ru content
DE102010037046A1 (de) 2009-08-31 2011-03-03 General Electric Co. Nickelbasissuperlegierungen und Artikel
US20110076180A1 (en) 2009-09-30 2011-03-31 General Electric Company Nickel-Based Superalloys and Articles
EP2305847A1 (fr) 2009-09-30 2011-04-06 General Electric Company Superalliages à base de nickel et articles
EP2314727A1 (fr) 2009-09-30 2011-04-27 General Electric Company Superalliages à base de nickel et articles
US20130129522A1 (en) 2011-11-17 2013-05-23 Kenneth Harris Rhenium-free single crystal superalloy for turbine blades and vane applications
WO2013083101A1 (fr) 2011-12-07 2013-06-13 Mtu Aero Engines Gmbh Superalliage à base de nickel exempt de rhénium ou à teneur de rhénium réduite
EP2725110A1 (fr) 2012-10-26 2014-04-30 MTU Aero Engines GmbH Superalliage à base de nickel sans rhénium résistant au fluage
EP2576853B1 (fr) 2010-06-02 2014-10-29 Siemens Aktiengesellschaft Alliage, couche de protection et composant

Patent Citations (15)

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Publication number Priority date Publication date Assignee Title
US6054096A (en) 1982-12-27 2000-04-25 United Technologies Corporation Stable heat treatable nickel superalloy single crystal articles and compositions
EP0962542A1 (fr) 1998-05-01 1999-12-08 United Technologies Corporation Superalliage monocrystaline à base de nickel de traitement thermique et l'article
US20130230405A1 (en) 2007-08-31 2013-09-05 Kevin Swayne O'Hara Nickel base superalloy compositions being substantially free of rhenium and superalloy articles
WO2009032578A1 (fr) 2007-08-31 2009-03-12 General Electric Company Compositions de superalliage au nickel à faible teneur en rhénium, et articles en superalliage
WO2009032579A1 (fr) 2007-08-31 2009-03-12 General Electric Company Composition de superalliage au nickel sensiblement exempte de rhénium, et articles en superalliage
US20100135846A1 (en) 2008-12-01 2010-06-03 United Technologies Corporation Lower cost high strength single crystal superalloys with reduced re and ru content
DE102010037046A1 (de) 2009-08-31 2011-03-03 General Electric Co. Nickelbasissuperlegierungen und Artikel
US20110076180A1 (en) 2009-09-30 2011-03-31 General Electric Company Nickel-Based Superalloys and Articles
EP2305848A1 (fr) 2009-09-30 2011-04-06 General Electric Company Superalliages à base de nickel et articles
EP2314727A1 (fr) 2009-09-30 2011-04-27 General Electric Company Superalliages à base de nickel et articles
EP2305847A1 (fr) 2009-09-30 2011-04-06 General Electric Company Superalliages à base de nickel et articles
EP2576853B1 (fr) 2010-06-02 2014-10-29 Siemens Aktiengesellschaft Alliage, couche de protection et composant
US20130129522A1 (en) 2011-11-17 2013-05-23 Kenneth Harris Rhenium-free single crystal superalloy for turbine blades and vane applications
WO2013083101A1 (fr) 2011-12-07 2013-06-13 Mtu Aero Engines Gmbh Superalliage à base de nickel exempt de rhénium ou à teneur de rhénium réduite
EP2725110A1 (fr) 2012-10-26 2014-04-30 MTU Aero Engines GmbH Superalliage à base de nickel sans rhénium résistant au fluage

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Title
A. HECKL; S. NEUMEIER; M. GOKEN; R.F. SINGER: "The effect of Re and Ru on y/y'microstructure, y-solid solution strengthening and creep strength in nickel-base superalloys", MATERIAL SCIENCE AND ENGINEERING A, vol. 528, 2011, pages 3435 - 3444, XP028145882, DOI: doi:10.1016/j.msea.2011.01.023
HECKL A ET AL: "The effect of Re and Ru on / microstructure, -solid solution strengthening and creep strength in nickel-base superalloys", MATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS: PROPERTIES, MICROSTRUCTURES AND PROCESSING, ELSEVIER BV, NL, vol. 528, no. 9, 12 January 2011 (2011-01-12), pages 3435 - 3444, XP028145882, ISSN: 0921-5093, [retrieved on 20110119], DOI: 10.1016/J.MSEA.2011.01.023 *
PAUL J. FINK; JOSHUA L. MILLER; DOUGLAS G. KONITZER: "Rhenium Reduction - Alloy Design Using an Economically Strategic Element", JOM, vol. 62, 2010, pages 55 - 57, XP001554549, DOI: doi:10.1007/s11837-010-0012-z

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112760525A (zh) * 2019-11-01 2021-05-07 利宝地工程有限公司 高γ′镍基超级合金、其用途及制造涡轮发动机构件的方法

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ES2682362T3 (es) 2018-09-20
EP3091095B1 (fr) 2018-07-11
US20170058383A1 (en) 2017-03-02

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