EP0935008B1 - Eisen-Kobalt Legierung - Google Patents

Eisen-Kobalt Legierung Download PDF

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Publication number
EP0935008B1
EP0935008B1 EP99400112A EP99400112A EP0935008B1 EP 0935008 B1 EP0935008 B1 EP 0935008B1 EP 99400112 A EP99400112 A EP 99400112A EP 99400112 A EP99400112 A EP 99400112A EP 0935008 B1 EP0935008 B1 EP 0935008B1
Authority
EP
European Patent Office
Prior art keywords
iron
cobalt alloy
alloy
niobium
cobalt
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
EP99400112A
Other languages
English (en)
French (fr)
Other versions
EP0935008A1 (de
Inventor
Lucien Coutu
Laurent Chaput
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.)
Aperam Stainless Precision SAS
Original Assignee
Imphy Ugine Precision SA
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 Imphy Ugine Precision SA filed Critical Imphy Ugine Precision SA
Publication of EP0935008A1 publication Critical patent/EP0935008A1/de
Application granted granted Critical
Publication of EP0935008B1 publication Critical patent/EP0935008B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • 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
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium

Definitions

  • the present invention relates to an iron-cobalt alloy with characteristics improved mechanics.
  • Iron-cobalt alloys are well known, and are characterized by both very interesting magnetic properties and by a very great brittleness to the ordinary temperature, which makes their use delicate.
  • the alloy Fe50Co50 containing 50% by weight of iron and 50% of cobalt, has an induction at very high saturation and good magnetic permeability, but it has the disadvantage of not being able to be cold rolled, which makes it unusable practically.
  • This very great fragility results from the formation, below 730 ° C, approximately, of an ordered ⁇ 'phase, resulting from a disorder-order transformation.
  • This disorder-order transformation can be slowed down by adding vanadium, which makes it possible to manufacture an alloy of the iron-cobalt type, containing little about 50% cobalt and about 50% iron, suitable for being cold rolled after very energetic overheating.
  • vanadium which makes it possible to manufacture an alloy of the iron-cobalt type, containing little about 50% cobalt and about 50% iron, suitable for being cold rolled after very energetic overheating.
  • This alloy which has very good magnetic properties after cold rolling and annealing between 720 ° C and 870 ° C approximately, however has the drawback of requiring special precautions during reheating prior to overheating, in order to limit the magnification of the grain which deteriorates the ductility.
  • niobium or tantalum
  • the limit elasticity can exceed 600 MPa.
  • these mechanical characteristics do not can be obtained with relatively large additions of niobium or tantalum.
  • the object of the present invention is to provide an iron-cobalt alloy having at the times satisfactory ductility, good magnetic properties and improved mechanical characteristics, while having good suitability for hot rolling.
  • the inventors have surprisingly found that when added 0.0007% to 0.007% by weight, or better still 0.001% to 0.003%, of boron, to an alloy iron-cobalt containing, moreover, from 0.5% to 2.5%, or better still from 1.5% to 2.2%, of vanadium as well as a small amount of elements such as tantalum and niobium, we significantly increased the yield strength of the alloy, while retaining satisfactory magnetic characteristics and having very good suitability hot rolling.
  • alloys A and B according to the invention and alloy C according to the prior art we have developed alloys A and B according to the invention and alloy C according to the prior art. With these alloys, we made 2 mm strips by hot rolling at around 1200 ° C thick which have been hyper-soaked by cooling in less than 1 second between 800 ° C and 100 ° C. The strips thus obtained were cold rolled to obtain strips 0.35 mm thick. These cold rolled strips then have been annealed, in accordance with the state of the art, at temperatures between 700 ° C and 900 ° C so as to give them the properties of use. We then measured the mechanical and magnetic characteristics obtained. Alloys A and B have been hot-rolled without difficulty, ie without the appearance of corner cracks.
  • alloys A and B in accordance with the invention have significantly higher mechanical characteristics, since the yield strength can exceed 500 MPa, these characteristics are comparable to those obtained with alloys according to the prior art having 0.3% niobium.

Claims (8)

  1. Eisen-Kobalt-Legierung, dadurch gekennzeichnet, dass ihre chemische Zusammensetzung in Gewicht umfasst: 35% ≤ Co ≤ 55% 0,5% ≤ V ≤ 2,5% 0,02% ≤ Ta + 2 × Nb < 0,2% 0,0007% ≤ B ≤ 0,007% C ≤ 0,05%, wobei der Rest Eisen und aus der Erzeugung resultierende Verunreinigungen sind.
  2. Eisen-Kobalt-Legierung nach Anspruch 1, dadurch gekennzeichnet, dass: 1,5% ≤ V < 2,2%
  3. Eisen-Kobalt-Legierung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass: 0,03% ≤ Ta + Nb ≤ 0,15%
  4. Eisen-Kobalt-Legierung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass: Nb ≤ 0,03%
  5. Eisen-Kobalt-Legierung nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass: 0,001% ≤ B ≤ 0,003%
  6. Eisen-Kobalt-Legierung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass: C ≤ 0,007%
  7. Eisen-Kobalt-Legierung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die aus der Erzeugung resultierenden Verunreinigungen derartige Gehalte aufweisen, dass: Mn + Si ≤ 0,2% Cr + Mo + Cu ≤ 0,2% Ni ≤ 0,2% S ≤ 0,005%
  8. Eisen-Kobalt-Legierung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass: 40% ≤ Co ≤ 50%
EP99400112A 1998-02-05 1999-01-19 Eisen-Kobalt Legierung Expired - Lifetime EP0935008B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801310A FR2774397B1 (fr) 1998-02-05 1998-02-05 Alliage fer-cobalt
FR9801310 1998-02-05

Publications (2)

Publication Number Publication Date
EP0935008A1 EP0935008A1 (de) 1999-08-11
EP0935008B1 true EP0935008B1 (de) 2002-10-02

Family

ID=9522600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400112A Expired - Lifetime EP0935008B1 (de) 1998-02-05 1999-01-19 Eisen-Kobalt Legierung

Country Status (10)

Country Link
US (1) US6146474A (de)
EP (1) EP0935008B1 (de)
JP (1) JPH11264058A (de)
CN (1) CN1091162C (de)
DE (1) DE69903202T2 (de)
ES (1) ES2185294T3 (de)
FR (1) FR2774397B1 (de)
HK (1) HK1021651A1 (de)
IL (2) IL128067A (de)
RU (1) RU2201990C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7582171B2 (en) 2003-05-07 2009-09-01 Vacuumschmelze Gmbh & Co. Kg High-strength, soft-magnetic iron-cobalt-vanadium alloy
US11827961B2 (en) 2020-12-18 2023-11-28 Vacuumschmelze Gmbh & Co. Kg FeCoV alloy and method for producing a strip from an FeCoV alloy

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6855240B2 (en) * 2000-08-09 2005-02-15 Hitachi Global Storage Technologies Netherlands B.V. CoFe alloy film and process of making same
FR2816959B1 (fr) 2000-11-17 2003-08-01 Imphy Ugine Precision Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid
US6685882B2 (en) * 2001-01-11 2004-02-03 Chrysalis Technologies Incorporated Iron-cobalt-vanadium alloy
DE10134056B8 (de) 2001-07-13 2014-05-28 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von nanokristallinen Magnetkernen sowie Vorrichtung zur Durchführung des Verfahrens
US6992555B2 (en) * 2003-01-30 2006-01-31 Metglas, Inc. Gapped amorphous metal-based magnetic core
DE102005034486A1 (de) * 2005-07-20 2007-02-01 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung eines weichmagnetischen Kerns für Generatoren sowie Generator mit einem derartigen Kern
US20080035245A1 (en) * 2006-08-09 2008-02-14 Luana Emiliana Iorio Soft magnetic material and systems therewith
US20100201469A1 (en) * 2006-08-09 2010-08-12 General Electric Company Soft magnetic material and systems therewith
DE502007000329D1 (de) 2006-10-30 2009-02-05 Vacuumschmelze Gmbh & Co Kg Weichmagnetische Legierung auf Eisen-Kobalt-Basis sowie Verfahren zu deren Herstellung
US9057115B2 (en) 2007-07-27 2015-06-16 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and process for manufacturing it
US8012270B2 (en) 2007-07-27 2011-09-06 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
JP5262423B2 (ja) * 2008-08-21 2013-08-14 セイコーインスツル株式会社 ゴルフクラブヘッド、そのフェース部及びその製造方法
GB2495465B (en) * 2011-07-01 2014-07-09 Vacuumschmelze Gmbh & Co Kg Soft magnetic alloy and method for producing a soft magnetic alloy
US10294549B2 (en) 2011-07-01 2019-05-21 Vacuumschmelze Gmbh & Co. Kg Soft magnetic alloy and method for producing soft magnetic alloy
US9243304B2 (en) 2011-07-01 2016-01-26 Vacuumschmelze Gmbh & Company Kg Soft magnetic alloy and method for producing a soft magnetic alloy
GB2492406B (en) * 2011-07-01 2013-12-18 Vacuumschmelze Gmbh & Co Kg Soft magnetic alloy and method for producing a soft magnetic alloy
WO2013087997A1 (fr) * 2011-12-16 2013-06-20 Aperam Procédé de fabrication d'une bande mince en alliage magnétique doux et bande obtenue
CN103111811B (zh) * 2013-03-07 2015-09-23 茂名市兴丽高岭土有限公司 一种高岭土除铁过滤网的制造方法
DE102014213794A1 (de) * 2014-07-16 2016-01-21 Robert Bosch Gmbh Weichmagnetische Legierungszusammensetzung und Verfahren zum Herstellen einer solchen
CN106011543A (zh) * 2016-07-11 2016-10-12 陕西航空精密合金有限公司 改良型铁钴钒合金及其制造方法
TWI619817B (zh) * 2016-10-26 2018-04-01 光洋應用材料科技股份有限公司 鈷鐵鈮基靶材
DE102016222805A1 (de) * 2016-11-18 2018-05-24 Vacuumschmelze Gmbh & Co. Kg Halbzeug und Verfahren zum Herstellen einer CoFe-Legierung
DE102018112493A1 (de) * 2017-10-27 2019-05-02 Vacuumschmelze Gmbh & Co. Kg Hochpermeable weichmagnetische Legierung und Verfahren zum Herstellen einer hochpermeablen weichmagnetischen Legierung
FR3127649A1 (fr) * 2021-09-24 2023-03-31 Erneo Piece rotative du type « rotor » de machine electrique et/ou magnetique et machine associee.

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US2519277A (en) * 1947-01-15 1950-08-15 Bell Telephone Labor Inc Magnetostrictive device and alloy and method of producing them
US3065118A (en) * 1959-01-16 1962-11-20 Gen Electric Treatment of iron-cobalt alloys
US3634072A (en) * 1970-05-21 1972-01-11 Carpenter Technology Corp Magnetic alloy
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GB8715726D0 (en) * 1987-07-03 1987-08-12 Telcon Metals Ltd Soft magnetic alloys
JP2701306B2 (ja) * 1988-04-05 1998-01-21 大同特殊鋼株式会社 Ｆｅ−Ｃｏ系磁性合金の製造方法
US5501747A (en) * 1995-05-12 1996-03-26 Crs Holdings, Inc. High strength iron-cobalt-vanadium alloy article

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7582171B2 (en) 2003-05-07 2009-09-01 Vacuumschmelze Gmbh & Co. Kg High-strength, soft-magnetic iron-cobalt-vanadium alloy
US11827961B2 (en) 2020-12-18 2023-11-28 Vacuumschmelze Gmbh & Co. Kg FeCoV alloy and method for producing a strip from an FeCoV alloy

Also Published As

Publication number Publication date
ES2185294T3 (es) 2003-04-16
US6146474A (en) 2000-11-14
IL128067A0 (en) 1999-11-30
CN1227271A (zh) 1999-09-01
DE69903202D1 (de) 2002-11-07
IL128067A (en) 2001-10-31
JPH11264058A (ja) 1999-09-28
FR2774397A1 (fr) 1999-08-06
RU2201990C2 (ru) 2003-04-10
HK1021651A1 (en) 2000-06-23
EP0935008A1 (de) 1999-08-11
CN1091162C (zh) 2002-09-18
FR2774397B1 (fr) 2000-03-10
DE69903202T2 (de) 2003-06-18

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