US3418111A - Cobalt base alloy - Google Patents

Cobalt base alloy Download PDF

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Publication number
US3418111A
US3418111A US589822A US58982266A US3418111A US 3418111 A US3418111 A US 3418111A US 589822 A US589822 A US 589822A US 58982266 A US58982266 A US 58982266A US 3418111 A US3418111 A US 3418111A
Authority
US
United States
Prior art keywords
alloy
lanthanum
alloys
cobalt
cobalt base
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.)
Expired - Lifetime
Application number
US589822A
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English (en)
Inventor
Robert B Herchenroeder
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Priority to US589822A priority Critical patent/US3418111A/en
Priority to GB45164/67A priority patent/GB1154068A/en
Priority to DE1558683A priority patent/DE1558683C2/de
Priority to AT928467A priority patent/AT276788B/de
Priority to FR124720A priority patent/FR1541298A/fr
Priority to BE705444D priority patent/BE705444A/fr
Priority to LU54731D priority patent/LU54731A1/xx
Priority to SE14675/67A priority patent/SE327558B/xx
Priority to NL6714654.A priority patent/NL156192B/xx
Application granted granted Critical
Publication of US3418111A publication Critical patent/US3418111A/en
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
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • 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
    • C22C19/053—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 30% but less than 40%

Definitions

  • This invention relates to cobalt base alloys. More particularly, this invention relates to cobalt-chromiumtungsten-nickel alloys containing relatively small amounts of lanthanum which are characterized by improved oxidation resistance at high temperatures in addition to having excellent high temperature mechanical properties.
  • Cobalt base alloys have been used extensively in the past for high temperature applications and have been found to be generally satisfactory except that in some instances they have been lacking in oxidation resistance, when compared to nickel base alloys. However, at high temperatures, on the order of 1800 to 2100 F. nickel base alloys have limited mechanical properties. Accordingly, it would represent an advance in the art if cobalt base alloys could be provided with oxidation resistance comparable to or better than that of nickel base alloys at high temperatures, while retaining the characteristic strength and mechanical properties of cobalt base alloys at high temperatures.
  • a cobalt base alloy in accordance with the present invention is an alloy consisting essentially of about Percent Chromium 18-30 Tungsten 8-18 Iron Up to 10 Carbon 0.01-0.35 Nickel 8-30 Silicon Up to l Lathanum 0.02-0.2
  • the percent Cr-i-percent W percent C ratio in the alloy is at least about 110, with an alloy having a ratio of less than about 200 containing at least about 0.2% silicon.
  • a preferred range of the alloy of the present invention is as follows:
  • zirconium may be present in amounts up to about 2%; vanadium up to about 2%; up to about 1% berylium; boron up to about 0.02%; manganese up to about 2%; Ti-i-Al up to about 4%; Ta+Cb up to about 8%.
  • the lanthanum is preferably added in substantially elemental form, and should, in any event, exceed the aggregate amount of other rare earth metals in the final alloy.
  • the lanthanum addition can be made using any convenient technique such as mischmetal, elemental lanthanum or lanthanum containing alloys.
  • Table I shows alloy compositions which have been prepared by being melted, cast into ingots of about 20-25 lbs., forged to plate about to /4, inch thick, hot rolled to sheet and annealed at 2100-2250 F. for 10-15 minutes and quenched.
  • the lanthanum additions to alloys K and L were made in the form of mischmetal and for the other lanthanum-containing alloys the addition was made using either elemental lanthanum or lanthanum-cobalt alloy containing about 20% lanthanum.
  • alloys of this 20 33 invention in addition to having improved oxidation resist- 20 ance, are also characterized by excellent mechanical prop- 2 $2 erties at high temperatures. It can also be seen from 7 14 0 Table III that the alloys of the present invention, which 13 8 3 exhibited oxidation resistance com arable to Hastello Al- 10 23 f 12 19 loy X, have much better mechanical properties particu- 3 g larly at higher temperatures.
  • alloys A through S which contain lanthanum and are within the scope of the present invention, have superior oxidation properties as compared to alloys T through X, which while generally similar in composition, are outside of the compositional limits of this invention.
  • Alloys T, U, W and X for ex- Hastelloy ample, do not contain lanthanum and can be seen to be a loy X- -7 8- 6-5 0 considerably less oxidation resistant, particularly under intermittent conditions, then alloys in the group A through What is claimed is:
  • Hastelloy Alloy X a widely used nickel base alloy Nickel (nominal composition: 22% Cr, 1% W, 9% Mo, 18% Fe, Silicon Up to 1 0.1% C, 2.5% max. Co, Ni bal.), generally considered Lanthanum 0.02 0 2 to be the industry standard for oxidation resistance, was
  • Alloy 8 (AIM composition: 21-22% Cr, 13-14% W, percent C +p W 12% Fe, 22% Ni, 0.3% Si, 0.1% C, 0.06% La, balance percent C Co) can be seen from Table II to have exceptional oxidation resistance under continuous and intermittent condiratio in the alloy is at least about 10 i an n 1 wk 9f union Carbide Corporation 7 rzitliirggiless than about 200 containing at least about 2.
  • An alloy in accordance with claim 1 consisting essentially of about:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Heat Treatment Of Steel (AREA)
  • Powder Metallurgy (AREA)
US589822A 1966-10-27 1966-10-27 Cobalt base alloy Expired - Lifetime US3418111A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US589822A US3418111A (en) 1966-10-27 1966-10-27 Cobalt base alloy
GB45164/67A GB1154068A (en) 1966-10-27 1967-10-04 Alloy.
DE1558683A DE1558683C2 (de) 1966-10-27 1967-10-12 Verwendung einer Kobalt-Chrom-Wolfram-Nickel-Knetlegierung
AT928467A AT276788B (de) 1966-10-27 1967-10-13 Legierungen mit verbesserter Oxydationsbeständigkeit bei erhöhten Temperaturen
FR124720A FR1541298A (fr) 1966-10-27 1967-10-17 Alliages à base de cobalt
BE705444D BE705444A (fr) 1966-10-27 1967-10-20 Alliage a base de cobalt
LU54731D LU54731A1 (fr) 1966-10-27 1967-10-25
SE14675/67A SE327558B (fr) 1966-10-27 1967-10-26
NL6714654.A NL156192B (nl) 1966-10-27 1967-10-27 Werkwijze ter bereiding van een kobaltlegering, alsmede voorwerpen, die geheel of gedeeltelijk uit deze kobaltlegering bestaan.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US589822A US3418111A (en) 1966-10-27 1966-10-27 Cobalt base alloy

Publications (1)

Publication Number Publication Date
US3418111A true US3418111A (en) 1968-12-24

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ID=24359685

Family Applications (1)

Application Number Title Priority Date Filing Date
US589822A Expired - Lifetime US3418111A (en) 1966-10-27 1966-10-27 Cobalt base alloy

Country Status (8)

Country Link
US (1) US3418111A (fr)
AT (1) AT276788B (fr)
BE (1) BE705444A (fr)
DE (1) DE1558683C2 (fr)
GB (1) GB1154068A (fr)
LU (1) LU54731A1 (fr)
NL (1) NL156192B (fr)
SE (1) SE327558B (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2062776A1 (de) * 1969-12-22 1971-06-24 Cabot Corp Kobaltlegierung
DE2352704A1 (de) * 1972-10-24 1974-04-25 Cabot Corp Schweissbare, oxidationsbestaendige kobaltlegierung
US3881918A (en) * 1974-05-09 1975-05-06 Owens Corning Fiberglass Corp Cobalt-base superalloy
US4003765A (en) * 1972-05-04 1977-01-18 Creusot-Loire Heat treatment of cobalt base alloys
US4079169A (en) * 1976-11-15 1978-03-14 International Business Machines Corporation Cobalt base alloy as protective layer for magnetic recording media
US4169726A (en) * 1977-12-21 1979-10-02 General Electric Company Casting alloy and directionally solidified article
US6077615A (en) * 1997-10-20 2000-06-20 Hitachi, Ltd. Gas turbine nozzle, power generation gas turbine, co-base alloy and welding material
US20060079954A1 (en) * 2004-10-08 2006-04-13 Robert Burgermeister Geometry and material for high strength, high flexibility, controlled recoil stent
US20060129226A1 (en) * 2004-12-10 2006-06-15 Robert Burgermeister Material for flexible connectors in high strength, high flexibility, controlled recoil stent
US20060136040A1 (en) * 2004-12-17 2006-06-22 Robert Burgermeister Longitudinal design and improved material for flexible connectors in high strength, high flexibility, controlled recoil stent
RU2283361C1 (ru) * 2005-03-24 2006-09-10 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") Жаропрочный сплав на основе кобальта и изделие, выполненное из этого сплава
US20140227550A1 (en) * 2013-02-12 2014-08-14 General Electric Company Magnetic nickel base ternary brazing material and method of application
US20150308937A1 (en) * 2014-04-23 2015-10-29 Rolls-Royce Plc Method of testing the oxidation resistance of an alloy
CN106636850A (zh) * 2016-11-21 2017-05-10 重庆材料研究院有限公司 高温抗氧化性高强度掺稀土合金材料及制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802934A (en) * 1973-01-12 1974-04-09 Cabot Corp Precipitation strengthened alloys
JPS51103817A (en) * 1975-03-12 1976-09-14 Hitachi Ltd Kooneiseinoookii kobarutokigokin

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2075718A (en) * 1935-03-07 1937-03-30 Firm Heraeus Vacuumachmetze Ag Heat-resisting implement
US2744010A (en) * 1951-02-12 1956-05-01 Gen Motors Corp High temperature co-cr alloys
US2746860A (en) * 1952-11-21 1956-05-22 Union Carbide And Carbodn Corp High temperature co-cr alloys
US3304176A (en) * 1963-12-26 1967-02-14 Gen Electric Nickel base alloy
US3366478A (en) * 1965-07-21 1968-01-30 Martin Marietta Corp Cobalt-base sheet alloy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB708820A (en) * 1951-03-29 1954-05-12 Carpenter Steel Co Improvements in alloys

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2075718A (en) * 1935-03-07 1937-03-30 Firm Heraeus Vacuumachmetze Ag Heat-resisting implement
US2744010A (en) * 1951-02-12 1956-05-01 Gen Motors Corp High temperature co-cr alloys
US2746860A (en) * 1952-11-21 1956-05-22 Union Carbide And Carbodn Corp High temperature co-cr alloys
US3304176A (en) * 1963-12-26 1967-02-14 Gen Electric Nickel base alloy
US3366478A (en) * 1965-07-21 1968-01-30 Martin Marietta Corp Cobalt-base sheet alloy

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2062776A1 (de) * 1969-12-22 1971-06-24 Cabot Corp Kobaltlegierung
US4003765A (en) * 1972-05-04 1977-01-18 Creusot-Loire Heat treatment of cobalt base alloys
DE2352704A1 (de) * 1972-10-24 1974-04-25 Cabot Corp Schweissbare, oxidationsbestaendige kobaltlegierung
US3881918A (en) * 1974-05-09 1975-05-06 Owens Corning Fiberglass Corp Cobalt-base superalloy
US4079169A (en) * 1976-11-15 1978-03-14 International Business Machines Corporation Cobalt base alloy as protective layer for magnetic recording media
US4169726A (en) * 1977-12-21 1979-10-02 General Electric Company Casting alloy and directionally solidified article
US6077615A (en) * 1997-10-20 2000-06-20 Hitachi, Ltd. Gas turbine nozzle, power generation gas turbine, co-base alloy and welding material
US20060079954A1 (en) * 2004-10-08 2006-04-13 Robert Burgermeister Geometry and material for high strength, high flexibility, controlled recoil stent
US20060129226A1 (en) * 2004-12-10 2006-06-15 Robert Burgermeister Material for flexible connectors in high strength, high flexibility, controlled recoil stent
US20060136040A1 (en) * 2004-12-17 2006-06-22 Robert Burgermeister Longitudinal design and improved material for flexible connectors in high strength, high flexibility, controlled recoil stent
RU2283361C1 (ru) * 2005-03-24 2006-09-10 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") Жаропрочный сплав на основе кобальта и изделие, выполненное из этого сплава
US20140227550A1 (en) * 2013-02-12 2014-08-14 General Electric Company Magnetic nickel base ternary brazing material and method of application
US9393646B2 (en) * 2013-02-12 2016-07-19 General Electric Company Magnetic nickel base ternary brazing material and method of application
US20150308937A1 (en) * 2014-04-23 2015-10-29 Rolls-Royce Plc Method of testing the oxidation resistance of an alloy
US9752970B2 (en) * 2014-04-23 2017-09-05 Rolls-Royce Plc Method of testing the oxidation resistance of an alloy
CN106636850A (zh) * 2016-11-21 2017-05-10 重庆材料研究院有限公司 高温抗氧化性高强度掺稀土合金材料及制备方法
CN106636850B (zh) * 2016-11-21 2019-02-15 重庆材料研究院有限公司 高温抗氧化性高强度掺稀土合金材料及制备方法

Also Published As

Publication number Publication date
NL6714654A (fr) 1968-04-29
NL156192B (nl) 1978-03-15
SE327558B (fr) 1970-08-24
DE1558683C2 (de) 1974-04-11
DE1558683B1 (de) 1973-09-27
BE705444A (fr) 1968-04-22
AT276788B (de) 1969-12-10
LU54731A1 (fr) 1968-01-26
GB1154068A (en) 1969-06-04

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