EP1475450A1 - Alliage Fe-Co-V magnétique doux à haute résistance mécanique. - Google Patents

Alliage Fe-Co-V magnétique doux à haute résistance mécanique. Download PDF

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Publication number
EP1475450A1
EP1475450A1 EP04010444A EP04010444A EP1475450A1 EP 1475450 A1 EP1475450 A1 EP 1475450A1 EP 04010444 A EP04010444 A EP 04010444A EP 04010444 A EP04010444 A EP 04010444A EP 1475450 A1 EP1475450 A1 EP 1475450A1
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EP
European Patent Office
Prior art keywords
cobalt
soft magnetic
magnetic iron
content
vanadium 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
EP04010444A
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German (de)
English (en)
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EP1475450B1 (fr
Inventor
Joachim Gerster
Johannes Tenbrink
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Vacuumschmelze GmbH and Co KG
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Vacuumschmelze GmbH and Co KG
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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
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt

Definitions

  • the invention relates to a high-strength soft magnetic iron-cobalt-vanadium alloy, in particular for electrical Generators, motors and magnetic bearings used in aircraft can be. Electric generators, motors and magnetic Bearings in aircraft must be next to one as possible Small size also have the lowest possible weight. Therefore soft magnetic iron-cobalt-vanadium alloys are used for these applications used, which has a high saturation induction exhibit.
  • the binary iron-cobalt alloys with a cobalt content between 33 and 55 wt.% are extremely brittle, resulting in the formation of an ordered superstructure at temperatures below 730 ° C is due.
  • the addition of about 2 % By weight of vanadium impairs the transition into this superstructure, so that a relatively good cold workability after Quenching to room temperature from the temperatures above 730 ° C can be achieved.
  • a ternary base alloy is therefore an iron-cobalt-vanadium alloy known, the 49 wt.% Iron, 49 wt.% Cobalt and 2% by weight of vanadium.
  • This alloy has been around long known and is described, for example, in R. M. Bozorth, Ferromagnetism, van Nostrand, New York (1951) "in detail described.
  • This vanadium-containing iron-cobalt alloy is characterized by its very high saturation induction of about 2.4 T from.
  • US 3,634,072 therefore proposes as ductility-enhancing additives an addition of 0.02 to 0.5 wt.% of niobium and / or 0.07 to 0.3 wt.% zircon.
  • Niobium which by the way is replaced by the homologous tantalum Not only has in the iron-cobalt alloy system the property of strongly suppressing the degree of order, what for example, R.V. Major and C.M. Orrock in "High saturation ternary cobalt-iron based alloys ", IEEE Trans. Magn. 24 (1988), 1856-1858, but it also inhibits grain growth.
  • Object of the present invention is therefore to provide a new high strength soft magnetic iron cobalt vanadium alloy selection to provide, which is characterized by very good mechanical properties, especially by very high Distinguishing yield points.
  • the alloys are also intended for longer annealing times of at least two hours with a high level of production reliability Yield strengths of more than 600 MPa, preferably from above 700 MPa.
  • the alloys should simultaneously have high saturation induction values and the lowest possible coercive field strengths have, i. an excellent soft magnetic Show behavior.
  • the term "consists essentially of” is here and hereinafter understood that the alloy selection according to the invention besides the stated main constituents of Co, V, Zr, Nb, Ta and Fe are merely melting and / or have random contaminants in such an amount can, which has neither the mechanical nor the magnetic properties significantly impaired.
  • the inventive soft magnetic iron-cobalt-vanadium alloy one Zirconium content of 0.5 ⁇ Zr ⁇ 1.0 wt%, ideally one Zirconium content of 0.6 ⁇ Zr ⁇ 0.8 wt.% To.
  • the cobalt content is 48.0 ⁇ Co ⁇ 50.0 Wt.%. But also with alloys whose cobalt content is between 45.0 ⁇ Co ⁇ 48.0% by weight, very good results can be achieved.
  • the content of nickel should be Ni ⁇ 1.0 wt%, ideally Ni ⁇ 0.5 wt.%.
  • a typical embodiment of the present invention has the soft magnetic iron-cobalt-vanadium alloy according to the invention a vanadium ion content of 1.0 ⁇ V ⁇ 2.0 % By weight, ideally a vanadium content of 1.5 ⁇ V ⁇ 2.0 % By weight.
  • niobium and / or tantalum contents 0.04 ⁇ (Ta + 2 x Nb) ⁇ 0.8 wt%, ideally, 0.04 ⁇ (Ta + 2 x Nb) ⁇ 0.3% by weight.
  • the zirconium content is better to adjust.
  • the alloy melt is then poured into molds. After solidification of the melt block is turned off and then rolled at a temperature between 900 ° C and 1300 ° C to a slab. Alternatively, it is also possible to dispense with twisting off the oxide skin on the surface of the melt blocks. Instead, then the slab must be processed accordingly on their surface.
  • the resulting slab is then at similar temperatures, that means at temperatures above 900 ° C, to one Hot rolled strip.
  • the then obtained hot-rolled alloy strip is too brittle for another cold rolling process.
  • the hot-rolled alloy strip becomes of a temperature ordered above the phase transition / disordered, which known to be at a temperature of about 730 ° C in Water, preferably quenched in ice-salt water.
  • the alloy ribbon is now sufficient ductile.
  • the alloy ribbon becomes a thickness cold-rolled of about 0.35 mm.
  • the manufactured desired shapes are formed usually by punching. Further methods are laser cutting, Wire eroding, water jet cutting or the like.
  • FIGS . 1 to 8 which each show the coercive force H c as a function of the yield strength R p0,2 .
  • tensile specimens and Punched rings were the respective magnetic final annealing performed.
  • the zirconium additive was exactly 0.28% by weight.
  • Batches 93/5969 and 93/5968 were alloys such as the aforementioned US 5,501,747 (Masteller) correspond. These were high-strength, magnetically soft iron-cobalt-vanadium alloys, which were zircon free.
  • the duration of the final annealing and the Annealing temperatures varies.
  • the annealing temperatures were from 720 ° C up to 800 ° C varies.
  • the duration of the final anniversaries was varied from one hour to four hours.
  • FIGS. 1, 2 and 3 A graphic summary of the results found in these three prior art alloys are provided by FIGS. 1, 2 and 3. As can be seen from these figures, these alloys have a high yield strength, ie a yield strength R p0.2 above 700 MPa only achievable if appreciable losses in soft magnetic behavior are accepted. All three alloys already exhibit a semi-hard magnetic behavior in the range of 700 MPa and higher, ie a coercive force H c of more than 6.0 A / cm.
  • the zirconium content was varied on the one hand, On the other hand, the zirconium content together with the other alloying components responsible for ductility Niobium and tantalum vary.
  • both the annealing temperatures at the magnetic annealing as well as the Final annealing times varies.
  • the closing times were between one hour and four hours varied.
  • the final annealing temperatures were varied between 720 ° C and 800 ° C.
  • Table 26 shows the examination of the appropriate ironing temperature for the special melts try the batches 93/7179 to 93/7183. Only the batch 93/7184 was without quenching cold-rolled. After quenching at each specified Temperatures, see Table 26, let the bands cold roll to final thickness.
  • Figures 9 to 11 show the relationship between induction and Field strength for lots 93/7179 to 93/7184 after one Final annealing under different annealing parameters. induction values are air flow corrected according to ASTM A 341 / A 341M and IEC 404-4. These results as well as the results of the tensile tests are listed in Tables 27, 29 and 31.
  • the ratio between Co content or V content and yield strength R p0.2 is shown graphically in FIGS . 12 and 13.
  • Tables 28, 30 and 32 show the resistivity as well as the core loss losses for lots 93/7179 to 93/7184.
  • the relationship between specific electrical resistance ⁇ e1 and Co and V content for different annealing parameters is shown graphically in FIGS. 14 and 15.
  • the alloys according to the present invention are particularly suitable for magnetic bearings, in particular for the rotors of magnetic bearings, as described in US 5,501,747, and as a material for generators and for engines.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)
EP04010444A 2003-05-07 2004-05-03 Alliage Fe-Co-V magnétique doux à haute résistance mécanique. Expired - Lifetime EP1475450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320350A DE10320350B3 (de) 2003-05-07 2003-05-07 Hochfeste weichmagnetische Eisen-Kobalt-Vanadium-Legierung
DE10320350 2003-05-07

Publications (2)

Publication Number Publication Date
EP1475450A1 true EP1475450A1 (fr) 2004-11-10
EP1475450B1 EP1475450B1 (fr) 2005-11-02

Family

ID=32921157

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EP04010444A Expired - Lifetime EP1475450B1 (fr) 2003-05-07 2004-05-03 Alliage Fe-Co-V magnétique doux à haute résistance mécanique.

Country Status (5)

Country Link
US (1) US7582171B2 (fr)
EP (1) EP1475450B1 (fr)
AT (1) ATE308626T1 (fr)
DE (2) DE10320350B3 (fr)
ES (1) ES2252716T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009442A3 (fr) * 2005-07-20 2007-04-26 Vacuumschmelze Gmbh & Co Kg Procede de fabrication d'un coeur magnetique doux pour un generateur et generateur pourvu d'un coeur de ce type
US7909945B2 (en) 2006-10-30 2011-03-22 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and method for its production
US7964043B2 (en) 2001-07-13 2011-06-21 Vacuumschmelze Gmbh & Co. Kg Method for producing nanocrystalline magnet cores, and device for carrying out said method
US8012270B2 (en) 2007-07-27 2011-09-06 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
US9057115B2 (en) 2007-07-27 2015-06-16 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and process for manufacturing it

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2492406B (en) * 2011-07-01 2013-12-18 Vacuumschmelze Gmbh & Co Kg Soft magnetic alloy and method for producing a 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
US10294549B2 (en) * 2011-07-01 2019-05-21 Vacuumschmelze Gmbh & Co. Kg Soft magnetic alloy and method for producing 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
CN104480351B (zh) * 2015-01-06 2017-07-07 上海康晟航材科技股份有限公司 铁钴钒超合金及其制备方法
DE102016222805A1 (de) * 2016-11-18 2018-05-24 Vacuumschmelze Gmbh & Co. Kg Halbzeug und Verfahren zum Herstellen einer CoFe-Legierung
DE102020134301A1 (de) 2020-12-18 2022-06-23 Vacuumschmelze Gmbh & Co. Kg Weichmagnetische Legierung und Verfahren zum Herstellen einer weichmagnetischen Legierung
US11827961B2 (en) 2020-12-18 2023-11-28 Vacuumschmelze Gmbh & Co. Kg FeCoV alloy and method for producing a strip from an FeCoV alloy
DE102022124694B4 (de) 2022-09-26 2024-05-08 eleQtron GmbH Quantencomputeranordnung und Quantencomputer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634072A (en) * 1970-05-21 1972-01-11 Carpenter Technology Corp Magnetic alloy
US4116727A (en) * 1975-03-04 1978-09-26 Telcon Metals Limited Magnetical soft alloys with good mechanical properties
US4933026A (en) * 1987-07-03 1990-06-12 Rawlings Rees D Soft magnetic alloys
US5501747A (en) * 1995-05-12 1996-03-26 Crs Holdings, Inc. High strength iron-cobalt-vanadium alloy article
JPH09228007A (ja) * 1996-02-22 1997-09-02 Toshiba Corp 高強度磁歪合金、センサーコアおよびそれを用いた荷重センサー
US5976274A (en) * 1997-01-23 1999-11-02 Akihisa Inoue Soft magnetic amorphous alloy and high hardness amorphous alloy and high hardness tool using the same
US6146474A (en) * 1998-02-05 2000-11-14 Imphy Ugine Precision Iron-cobalt alloy
US20020127132A1 (en) * 2001-01-11 2002-09-12 Deevi Seetharama C. Iron-cobalt-vanadium alloy

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1523881A (en) * 1975-03-04 1978-09-06 Telcon Metals Ltd Magnetic alloys
JPS59162251A (ja) * 1983-03-08 1984-09-13 Hitachi Metals Ltd 高透磁率磁性合金

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634072A (en) * 1970-05-21 1972-01-11 Carpenter Technology Corp Magnetic alloy
US4116727A (en) * 1975-03-04 1978-09-26 Telcon Metals Limited Magnetical soft alloys with good mechanical properties
US4933026A (en) * 1987-07-03 1990-06-12 Rawlings Rees D Soft magnetic alloys
US5501747A (en) * 1995-05-12 1996-03-26 Crs Holdings, Inc. High strength iron-cobalt-vanadium alloy article
EP0824755A1 (fr) * 1995-05-12 1998-02-25 Crs Holdings, Inc. Article en alliage fer-cobalt-vanadium presentant une resistance elevee a la contrainte
JPH09228007A (ja) * 1996-02-22 1997-09-02 Toshiba Corp 高強度磁歪合金、センサーコアおよびそれを用いた荷重センサー
US5976274A (en) * 1997-01-23 1999-11-02 Akihisa Inoue Soft magnetic amorphous alloy and high hardness amorphous alloy and high hardness tool using the same
US6146474A (en) * 1998-02-05 2000-11-14 Imphy Ugine Precision Iron-cobalt alloy
US20020127132A1 (en) * 2001-01-11 2002-09-12 Deevi Seetharama C. Iron-cobalt-vanadium alloy

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7964043B2 (en) 2001-07-13 2011-06-21 Vacuumschmelze Gmbh & Co. Kg Method for producing nanocrystalline magnet cores, and device for carrying out said method
WO2007009442A3 (fr) * 2005-07-20 2007-04-26 Vacuumschmelze Gmbh & Co Kg Procede de fabrication d'un coeur magnetique doux pour un generateur et generateur pourvu d'un coeur de ce type
US8887376B2 (en) 2005-07-20 2014-11-18 Vacuumschmelze Gmbh & Co. Kg Method for production of a soft-magnetic core having CoFe or CoFeV laminations and generator or motor comprising such a core
US7909945B2 (en) 2006-10-30 2011-03-22 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and method for its production
US8012270B2 (en) 2007-07-27 2011-09-06 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
US9057115B2 (en) 2007-07-27 2015-06-16 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and process for manufacturing it

Also Published As

Publication number Publication date
EP1475450B1 (fr) 2005-11-02
US20050268994A1 (en) 2005-12-08
DE502004000125D1 (de) 2005-12-08
ATE308626T1 (de) 2005-11-15
US7582171B2 (en) 2009-09-01
ES2252716T3 (es) 2006-05-16
DE10320350B3 (de) 2004-09-30

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