US20040101433A1 - Austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy and use thereof - Google Patents

Austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy and use thereof Download PDF

Info

Publication number
US20040101433A1
US20040101433A1 US10/399,802 US39980203A US2004101433A1 US 20040101433 A1 US20040101433 A1 US 20040101433A1 US 39980203 A US39980203 A US 39980203A US 2004101433 A1 US2004101433 A1 US 2004101433A1
Authority
US
United States
Prior art keywords
molybdenum
cobalt
chrome
max
nickel
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.)
Abandoned
Application number
US10/399,802
Inventor
Ulrich Brill
Reinhard Weiss
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.)
ThyssenKrupp-VDM GmbH
Original Assignee
ThyssenKrupp-VDM 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
Priority to DE10052023.5 priority Critical
Priority to DE2000152023 priority patent/DE10052023C1/en
Application filed by ThyssenKrupp-VDM GmbH filed Critical ThyssenKrupp-VDM GmbH
Priority to PCT/EP2001/010557 priority patent/WO2002034955A1/en
Assigned to THYSSENKRUPP VDM GMBH reassignment THYSSENKRUPP VDM GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEISS, REINHARD, BRILL, ULRICH
Publication of US20040101433A1 publication Critical patent/US20040101433A1/en
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • C22C19/05Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/055Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%

Abstract

The invention relates to an austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy, comprising (in mass %): carbon: 0.05 to 0.10%; chromium: 21 to 23%; cobalt: 10 to 15%; molybdenum: 10 to 11%; aluminium: 1.0 to 1.5%; tungsten: 5.1 to 8.0%; yttrium: 0.01 to 0.10%; boron: 0.001 to 0.010%; titanium: max. 0.50%; silicon: max. 0.50%; iron: max. 2%; manganese: max. 0.5%; nickel: remainder; including unavoidable impurities caused by the smelting process.

Description

  • The invention relates to an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy. [0001]
  • It is known that nickel master alloys are widely used in thermal engines, such as for example internal combustion engines, stationary and flying gas turbines, because they have extremely good mechanical properties, in particular in the temperature range comprised between 700 and 900° C. [0002]
  • Many of these alloys contain substantial portions of γ′ and γ″ phases, which are decisive for increasing the strength in the temperature range comprised between 700 and 900° C. For the precipitation of the γ′ and γ″ phases, the alloy elements aluminium, titanium, tantalum and niobium are mostly used. [0003]
  • Thus, GB-A 929,687 describes a nickel-chrome-cobalt-molybdenum alloy, which significantly increases its strength by γ′ and γ″ precipitation by means of adding 2.0-3.5% titanium, 0-0.8% aluminium and 2-5.25% niobium. [0004]
  • Herein, up to 10 atomic % of tungsten are allowed as substitution element of molybdenum and up to 3% by mass of tantalum are proposed as substitution element of niobium. [0005]
  • GB-A 1,036,179 essentially describes a limitation of the elements mentioned in GB-A 929,687 only, with the exception that iron is no more allowed as alloying element. [0006]
  • U.S. Pat. No. 4,981,644 also describes a nickel-chrome-cobalt-molybdenum alloy, which is precipitation-hardening by means of titanium, aluminium, niobium and tantalum, but which only prescribes a total content of 1.0-8.5% of the elements rhenium, molybdenum and tungsten. [0007]
  • WO-A [0008] 90/03450 describes a precipitation-hardening alloy, for which, in contrast to U.S. Pat. No. 4,981,644, not only upper limits, but also lower limits regarding the precipitation-hardening elements Al, Ti, Nb and Ta are defined; in contrast thereto, only upper limits of rhenium, hafnium and vanadium are mentioned.
  • The wish to be able to use highly heat resisting alloys also as wrought alloys, i.e. for example also as sheet metals, which can be deformed and joined, led to the solid solution hardened alloys, which do not contain more than about 2% by mass of precipitation-hardening elements, such as for example aluminium, titanium and niobium. [0009]
  • Thus, GB-A 1,336,409 describes a nickel-chrome-cobalt-molybdenum alloy, in which the sum of the precipitation-hardening elements aluminium and titanium is limited to 0.8-2.1%. [0010]
  • U.S. Pat. No. 4,877,461 describes a nickel-chrome-molybdenum-cobalt alloy having an improved creep strength, which approximately contains the same high level, namely 0.5-2.25%, but also an addition of up to 5% tungsten. [0011]
  • EP-B 0633 325 discloses an alloy, which, based upon U.S. Pat. No. 4,877,461, prescribes a limitation of 0.5-2.0% by mass for aluminium and titanium and maximum 5% by mass for the addition of tungsten, but also comprises 0.7-2.5% by mass tantalum, which is advantageous for the strength. [0012]
  • It may have been achieved to produce heat resisting, deformable and joinable sheet metal materials by reducing the aluminium and titanium content to 0.5-2.0% by mass and adding tungsten and tantalum to nickel-chrome-cobalt-molybdenum alloys, but the obtained heat resistance was always clearly lower than the one of the precipitation-hardening alloy. [0013]
  • It is thus the object of the present invention to improve nickel-chrome-cobalt-molybdenum alloys of the initially mentioned type, such that with sufficient oxidation stability, the values of the heat resistance and creep strength are improved in such a way that the service life of items made of such alloys will be significantly increased. The material shall be usable as wrought alloy, which can be deformed and welded.[0014]
  • This aim is achieved by an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy consisting of (in % by mass): [0015]
    carbon: 0.05 to 0.10%
    chrome: 21 to 23%
    cobalt: 10 to 15%
    molybdenum: 10 to 11%
    aluminium: 1.0 to 1.5%
    tungsten: 5.1 to 8.0%
    yttrium: 0.01 to 0.10%
    boron: 0.001 to 0.010%
    titanium: max. 0.50%
    silicium: max. 0.50%
    iron: max. 2%
    manganese: max. 0.5%
    nickel: remainder
  • including unavoidable impurities caused by the smelting process. [0016]
  • A preferred austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy has the following composition (in % by mass): [0017]
    carbon: 0.05 to 0.10%
    chrome: 21 to 23%
    cobalt: 12 to 13%
    molybdenum: 10 to 11%
    aluminium: 1.0 to 1.5%
    tungsten: 5.1 to 7.0%
    yttrium: 0.04 to 0.07%
    boron: 0.001 to 0.005%
    titanium: max. 0.50%
    silicium: max. 0.50%
    iron: max. 2%
    manganese: max. 0.5%
    nickel: remainder
  • including unavoidable impurities caused by the smelting process. [0018]
  • In contrast to the state of the art, the nickel-chrome-cobalt-molybdenum-tungsten alloy according to the invention comprises clearly more than 5% by mass tungsten and does not have any addition of tantalum for improving the heat resistance and creep strength. [0019]
  • Furthermore, the addition of 0.01 to 0.10% by mass yttrium improves the cyclic oxidation stability. [0020]
  • Alloys having additions of only up to 5% by mass tungsten, even with low additions of tantalum, do not reach the strength potential, which can be obtained by solid solution hardening. Surprisingly it has been found, in contrast to the teaching of U.S. Pat. No. 4,877,461 and EP-B 0633 325, that tungsten contents of more than 5% represent a very efficient possibility to increase the strength. But for a given composition, the addition of tungsten is limited to 8.0% by mass, since with higher contents the hot formability is no longer given. [0021]
  • Due to its excellent creep strength in the temperature range comprised between 700 and 900° C. the nickel-chrome-cobalt-molybdenum-tungsten alloy according to the invention is especially suitable for items, such as for example [0022]
  • Stationary and flying gas turbines [0023]
  • Combustion engines [0024]
  • Components in steam turbines [0025]
  • Components of progressive gas and steam power stations [0026]
  • Turbo-superchargers [0027]
  • High temperature resistant ventilators [0028]
  • The mentioned items can be easily formed of the material according to the invention, since it is not only highly suitable for hot forming, but also for cold forming operations—such as for example cold rolling to thinner dimensions, folding, deep-drawing, edging. [0029]
  • Due to the good weldability of the material, the joining of larger components is also possible without any problems. [0030]
  • FIGS. 1 through 4 clearly show the advantage of the alloys [0031] 1-4 according to the invention compared to the alloys 5-7 representing the state of the art, by means of the service lives obtained at 700° C., 750° C., 800° C. and 850° C. in the stress rupture test.
  • The composition of the alloys [0032] 1-7 is represented in table 1.
  • In order to not only compensate the negative effect of tungsten on the cyclic oxidation stability, but also to further improve the cyclic oxidation stability, yttrium has been added by alloying to the alloys according to the invention. The content according to the invention of 0.01 to 0.10% results from the minimum content of 0.01% which is absolutely necessary for a visible improvement effect and from the defined maximum content of 0.10%, beyond which an “overdoping” and thus a decrease of the cyclic oxidation stability will probably take place. [0033]
  • The positive effect of yttrium is confirmed by the clearly lower material increase represented in FIGS. [0034] 5-6, which show the cyclic oxidation test at 700° C. and 800° C. during a test period of more than 1000 hours.
    TABLE 1
    elements in % alloys according to the invention alloys according to the state of the art
    by mass alloy 1 alloy 2 alloy 3 alloy 4 alloy 5 alloy 6 alloy 7
    C 0.065 0.074 0.057 0.067 0.079 0.067 0.090
    Cr 21.90 21.75 21.75 22.33 21.95 22.15 22.05
    Co 12.50 12.35 12.45 12.61 11.65 11.95 11.65
    Mo 10.3 10.1 10.15 9.79 8.88 9.54 8.85
    Ti 0.43 0.43 0.42 0.43 0.43 0.40 0.43
    Al 1.28 1.16 1.18 1.08 1.18 1.18 1.16
    Nb
    Fe 0.91 0.92 0.99 0.05 0.10 1.15 0.13
    B 0.003 0.002 0.002 0.004 0.001 0.002 0.004
    Zr
    Ni remainder remainder remainder remainder remainder remainder remainder
    W 5.6 5.1 5.2 7.9 3.03 0.04
    Ta
    Y 0.01 0.01 0.07 0.04

Claims (7)

1. Austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy consisting of (in % by mass):
carbon: 0.05 to 0.10% chrome: 21 to 23% cobalt: 10 to 15% molybdenum: 10 to 11% aluminium: 1.0 to 1.5% tungsten: 5.1 to 8.0% yttrium: 0.01 to 0.10% boron: 0.001 to 0.010% titanium: max. 0.50% silicium: max. 0.50% iron: max. 2% manganese: max. 0.5% nickel: remainder
including unavoidable impurities caused by the smelting process.
2. Austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy consisting of (in % by mass):
carbon: 0.05 to 0.10% chrome: 21 to 23% cobalt: 12 to 13% molybdenum: 10 to 11% aluminium: 1.0 to 1.5% tungsten: 5.1 to 7.0% yttrium: 0.04 to 0.07% boron: 0.001 to 0.005% titanium: max. 0.50% silicium: max. 0.50% iron: max. 2% manganese: max. 0.5% nickel: remainder
including unavoidable impurities caused by the smelting process.
3. Use of an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy according to claim 1 or 2, in particular for combustion chambers of stationary or flying gas turbines.
4. Use of an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy according to claim 1 or 2, in particular for compressors and turbo-superchargers of combustion engines.
5. Use of an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy according to claim 1 or 2, in particular for steam turbines.
6. Use of an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy according to claim 1 or 2, in particular for shafts, roots and blades of high temperature ventilators.
7. Use of an austenitic nickel-chrome-cobalt-molybdenum-tungsten alloy according to claim 1 or 2 for gas and steam turbine power stations, in particular combustion chamber walls, blades, tubes, boiler walls, membrane walls, collectors or the like.
US10/399,802 2000-10-20 2001-09-13 Austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy and use thereof Abandoned US20040101433A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10052023.5 2000-10-20
DE2000152023 DE10052023C1 (en) 2000-10-20 2000-10-20 Austenitic nickel-chromium-cobalt-molybdenum-tungsten alloy, and their use
PCT/EP2001/010557 WO2002034955A1 (en) 2000-10-20 2001-09-13 Austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy and use thereof

Publications (1)

Publication Number Publication Date
US20040101433A1 true US20040101433A1 (en) 2004-05-27

Family

ID=7660443

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/399,802 Abandoned US20040101433A1 (en) 2000-10-20 2001-09-13 Austenitic nickel/chrome/cobalt/molybdenum/tungsten alloy and use thereof

Country Status (10)

Country Link
US (1) US20040101433A1 (en)
EP (1) EP1327006B1 (en)
JP (1) JP2004530789A (en)
KR (1) KR20030043991A (en)
AT (1) AT264407T (en)
AU (1) AU9185801A (en)
CA (1) CA2423932A1 (en)
DE (1) DE10052023C1 (en)
HU (1) HU0302641A3 (en)
WO (1) WO2002034955A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090217537A1 (en) * 2008-02-29 2009-09-03 Macdonald Leo Spitz Novel advanced materials blades and cutting tools
US20100272597A1 (en) * 2009-04-24 2010-10-28 L. E. Jones Company Nickel based alloy useful for valve seat inserts
CN103080346A (en) * 2010-03-16 2013-05-01 蒂森克鲁普德国联合金属制造有限公司 Nickel-chromium-cobalt-molybdenum alloy
RU2567078C1 (en) * 2014-08-28 2015-10-27 Открытое акционерное общество Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" ОАО НПО "ЦНИИТМАШ" Cast work blade with monocrystal structure, heat resistant steel based on nickel to manufacture lock part of work blade and method of heat treatment of cast blade

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047329B3 (en) * 2008-09-16 2009-07-23 Alstom Technology Ltd. Producing and mounting nickel alloy-based superheater tube coils, for steam generators, includes forming and hardening tubes in workshop before mounting and hardening weld seams on site
DE102008047330B3 (en) * 2008-09-16 2009-07-23 Alstom Technology Ltd. Process for the factory prefabrication of a heat-treated steel nickel alloy serpentine pipe in sections and subsequent on-site assembly
US7789288B1 (en) * 2009-07-31 2010-09-07 General Electric Company Brazing process and material for repairing a component
JP2015000998A (en) * 2013-06-14 2015-01-05 三菱日立パワーシステムズ株式会社 Ni-BASED FORGING ALLOY AND BOILER PIPING AND BOILER TUBE USING THE SAME
DE102017007106A1 (en) 2017-07-28 2019-01-31 Vdm Metals International Gmbh High-temperature nickel-based alloy

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203792A (en) * 1961-04-01 1965-08-31 Basf Ag Highly corrosion resistant nickel-chromium-molybdenum alloy with improved resistance o intergranular corrosion
US3859060A (en) * 1971-08-06 1975-01-07 Int Nickel Co Nickel-chromi um-cobalt-molybdenum alloys
US3871928A (en) * 1973-08-13 1975-03-18 Int Nickel Co Heat treatment of nickel alloys
US3907552A (en) * 1971-10-12 1975-09-23 Teledyne Inc Nickel base alloys of improved properties
US4118223A (en) * 1971-09-13 1978-10-03 Cabot Corporation Thermally stable high-temperature nickel-base alloys
US4400211A (en) * 1981-06-10 1983-08-23 Sumitomo Metal Industries, Ltd. Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
US4877461A (en) * 1988-09-09 1989-10-31 Inco Alloys International, Inc. Nickel-base alloy
US4981644A (en) * 1983-07-29 1991-01-01 General Electric Company Nickel-base superalloy systems
US5017249A (en) * 1988-09-09 1991-05-21 Inco Alloys International, Inc. Nickel-base alloy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765956A (en) * 1986-08-18 1988-08-23 Inco Alloys International, Inc. Nickel-chromium alloy of improved fatigue strength

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203792A (en) * 1961-04-01 1965-08-31 Basf Ag Highly corrosion resistant nickel-chromium-molybdenum alloy with improved resistance o intergranular corrosion
US3859060A (en) * 1971-08-06 1975-01-07 Int Nickel Co Nickel-chromi um-cobalt-molybdenum alloys
US4118223A (en) * 1971-09-13 1978-10-03 Cabot Corporation Thermally stable high-temperature nickel-base alloys
US3907552A (en) * 1971-10-12 1975-09-23 Teledyne Inc Nickel base alloys of improved properties
US3871928A (en) * 1973-08-13 1975-03-18 Int Nickel Co Heat treatment of nickel alloys
US4400211A (en) * 1981-06-10 1983-08-23 Sumitomo Metal Industries, Ltd. Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
US4981644A (en) * 1983-07-29 1991-01-01 General Electric Company Nickel-base superalloy systems
US4877461A (en) * 1988-09-09 1989-10-31 Inco Alloys International, Inc. Nickel-base alloy
US5017249A (en) * 1988-09-09 1991-05-21 Inco Alloys International, Inc. Nickel-base alloy

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090217537A1 (en) * 2008-02-29 2009-09-03 Macdonald Leo Spitz Novel advanced materials blades and cutting tools
US20100272597A1 (en) * 2009-04-24 2010-10-28 L. E. Jones Company Nickel based alloy useful for valve seat inserts
CN103080346A (en) * 2010-03-16 2013-05-01 蒂森克鲁普德国联合金属制造有限公司 Nickel-chromium-cobalt-molybdenum alloy
US9011764B2 (en) 2010-03-16 2015-04-21 VDM Metals GmbH Nickel-chromium-cobalt-molybdenum alloy
CN103080346B (en) * 2010-03-16 2015-11-18 奥托昆普德国联合金属制造有限公司 Nickel - chromium - cobalt - molybdenum alloy
RU2567078C1 (en) * 2014-08-28 2015-10-27 Открытое акционерное общество Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" ОАО НПО "ЦНИИТМАШ" Cast work blade with monocrystal structure, heat resistant steel based on nickel to manufacture lock part of work blade and method of heat treatment of cast blade

Also Published As

Publication number Publication date
EP1327006A1 (en) 2003-07-16
EP1327006B1 (en) 2004-04-14
HU0302641A2 (en) 2003-11-28
CA2423932A1 (en) 2003-03-27
WO2002034955A1 (en) 2002-05-02
JP2004530789A (en) 2004-10-07
DE10052023C1 (en) 2002-05-16
HU0302641A3 (en) 2005-04-28
KR20030043991A (en) 2003-06-02
AU9185801A (en) 2002-05-06
AT264407T (en) 2004-04-15

Similar Documents

Publication Publication Date Title
US5595706A (en) Aluminum containing iron-base alloys useful as electrical resistance heating elements
RU2289637C2 (en) Nickel base alloy
CN1268776C (en) Austenitic stainless steels
JP4861651B2 (en) Ni-Cr-Co alloy for advanced gas turbine engines
EP1194606B1 (en) Heat resistant austenitic stainless steel
EP2113581B1 (en) Heat and corrosion resistant cast stainless steels with improved high temperature strength and ductility
JP5138504B2 (en) Ferritic stainless steel for exhaust gas passage member
JP4484093B2 (en) Ni-base heat-resistant alloy
KR101740164B1 (en) Austenitic heat-resistant alloy
US4929419A (en) Heat, corrosion, and wear resistant steel alloy and article
JP4037929B2 (en) Low thermal expansion Ni-base superalloy and a production method thereof
CN1075563C (en) Process for producing ferritic heat-resistant steel
EP0016225B1 (en) Use of an austenitic steel in oxidizing conditions at high temperature
US8491838B2 (en) Low thermal expansion Ni-base superalloy
JP5254693B2 (en) Welding material for a Ni-base alloy
JP4830466B2 (en) Exhaust valve using a heat-resistant alloy and an alloy for exhaust valves withstand use at 900 ° C.
US7156280B1 (en) Braze alloy compositions
CN102560275B (en) Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine
US5061440A (en) Ferritic heat resisting steel having superior high-temperature strength
EP0145471A2 (en) High temperature ferritic steel
US5211909A (en) Low-alloy heat-resistant steel having improved creep strength and toughness
WO2008013223A1 (en) Austenitic stainless steel welded joint and austenitic stainless steel welding material
CN1037361C (en) Heat-and creep-resistant steel saving a martensitic microstructure produced by a heat-treatment process
JP4277113B2 (en) Ni based alloy for heat spring
JP3753143B2 (en) Ni base superalloy casting superalloy and a turbine wheel which it and the material

Legal Events

Date Code Title Description
AS Assignment

Owner name: THYSSENKRUPP VDM GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRILL, ULRICH;WEISS, REINHARD;REEL/FRAME:014297/0186;SIGNING DATES FROM 20030326 TO 20030329