EP2886673A2 - Procédé de fabrication d'objets en alliages de fer- cobalt - molybdène/tungstène - azote inerte - Google Patents

Procédé de fabrication d'objets en alliages de fer- cobalt - molybdène/tungstène - azote inerte Download PDF

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Publication number
EP2886673A2
EP2886673A2 EP14192704.6A EP14192704A EP2886673A2 EP 2886673 A2 EP2886673 A2 EP 2886673A2 EP 14192704 A EP14192704 A EP 14192704A EP 2886673 A2 EP2886673 A2 EP 2886673A2
Authority
EP
European Patent Office
Prior art keywords
mpa
production
less
hrc
semifinished product
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
EP14192704.6A
Other languages
German (de)
English (en)
Other versions
EP2886673B1 (fr
EP2886673A3 (fr
Inventor
Gert Kellezi
Robert Tanzer
Christoph Turk
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.)
Voestalpine Boehler Edelstahl GmbH and Co KG
Original Assignee
Boehler Edelstahl GmbH and Co KG
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 Boehler Edelstahl GmbH and Co KG filed Critical Boehler Edelstahl GmbH and Co KG
Priority to SI201431345T priority Critical patent/SI2886673T1/sl
Publication of EP2886673A2 publication Critical patent/EP2886673A2/fr
Publication of EP2886673A3 publication Critical patent/EP2886673A3/fr
Application granted granted Critical
Publication of EP2886673B1 publication Critical patent/EP2886673B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/007—Heat treatment of ferrous alloys containing Co
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention generally relates to articles of iron-cobalt-molybdenum / tungsten-nitrogen alloys and to a production thereof.
  • the invention relates to a semi-finished article for producing articles and a method for improving the processability of precipitation-hardenable iron-cobalt-molybdenum / tungsten-nitrogen alloys.
  • a production of the semifinished product takes place in an advantageous manner via powder metallurgical (PM) processes, whereby a homogeneous material structure can be achieved.
  • PM powder metallurgical
  • the process for producing articles essentially involves hot-working the HIP block followed by cooling, after which the Fe-Co-Mo / WN material has a hardness of mostly 48-53 HRC, is extremely brittle, and does not require substantial machining allows.
  • a thermal finish of the part made of the semifinished product is usually carried out by a heat treatment with a solution annealing, followed by quenching and tempering, wherein a hardness of the material of optionally 68 HRC can be achieved.
  • An article, part or tool made of an Fe-Co-Mo / W-N alloy has best performance properties for a variety of special requirements, but requires a complicated manufacturing process due to the material.
  • the invention is now based on the object to provide a semi-finished product made of an alloy having an aforementioned composition, from which high-precision objects or tools can be manufactured with reduced effort.
  • the goal is achieved in a generic semifinished product, if this essentially of intermetallic phases of the type (FeCo) 6 (Mo + W / 2) 7 in a matrix of the type (Fe + (29xCo)) + about 1 wt .-% Mo formed is, wherein in the matrix substantially no order structures of the Fe and Co atoms are present or a formation of an Fe-Co-order structure is largely prevented and thus the material has a hardness of less than 40 HRC, a Schlagbiegearbeit K of unnotched samples of greater 16.0 J and a tensile reduction of more than 6.5% in the tensile test.
  • the material has a tensile strength Rm of less than 1220 MPa and a yield strength R P0.2 of less than 825 MPa.
  • a semifinished product according to the invention has the advantage of significantly improved machinability.
  • the material hardness which is usually in the range above 41 HRC, lowered to significantly below 40 HRC in the material according to the invention, which facilitates machining
  • the material brittleness is reduced and the toughness and deformability in the cold state improved, which is a straightening of the semifinished product within limits.
  • the further object of the invention is achieved in a method for producing a semifinished product mentioned by means of a special thermal treatment for dissolving an ordered structure of Fe-Co atoms in the matrix, wherein a heating and annealing of the part or material at a temperature between 600 ° C and 840 ° C with a time greater than 20 nin, after which the semifinished product is subjected to a cooling with a cooling rate ⁇ of less than 3 and thus a reduction or a hardness below 40 HRC with an improved material toughness, measured on the Bending work of unnotched samples K of greater than 16.0 J of the material takes place.
  • a thermal hardening by solution annealing, followed by quenching and tempering of the article is largely feasible distortion-free, with a desired hardness of the material of 68 HRC, if necessary.
  • a micrograph of the sample shows Fig. 1 , where the matrix can be recognized as a dark area in which intermetallic phases (light) are embedded.
  • the same treated samples was a special thermal treatment at temperatures of 500 to 950 ° C at an annealing time or holding time to a temperature of 40 min and a cooling rate ⁇ of less than 0.4.
  • the cooling rate ⁇ results from the cooling time from 800 ° C to 500 ° C broken by 100.
  • ⁇ sec 100
  • a special annealing with a temperature of 500 ° C bs 600 ° C results, as Fig. 2 , Range 1 shows, hardness values of the material of 42 HRC.
  • Higher annealing temperatures up to 850 ° C, as from area 2 and area 3 of Fig. 2 As can be seen, reduce the material hardness to values up to 38 HRC, with a further increase in the annealing temperature (range 4) causes a significant increase in hardness to about 44 HRC.
  • the diffraction of neutron rays at the periodic lattice can be used.
  • a periodic arrangement of atoms in the Fe-Co lattice leads to so-called superstructural reflections.
  • the superstructure is the (100) reflection in the ordered B2 lattice.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
EP14192704.6A 2013-12-12 2014-11-11 Procédé de fabrication d'objets en alliages de fer- cobalt - molybdène/tungstène - azote inerte Active EP2886673B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201431345T SI2886673T1 (sl) 2013-12-12 2014-11-11 Metoda za proizvodnjo objektov iz železo-kobalt-molibden/volfram-dušikovih zlitin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50820/2013A AT515148B1 (de) 2013-12-12 2013-12-12 Verfahren zur Herstellung von Gegenständen aus Eisen-Cobalt-Molybdän/Wolfram-Stickstoff-Legierungen

Publications (3)

Publication Number Publication Date
EP2886673A2 true EP2886673A2 (fr) 2015-06-24
EP2886673A3 EP2886673A3 (fr) 2015-08-05
EP2886673B1 EP2886673B1 (fr) 2019-06-12

Family

ID=51900200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14192704.6A Active EP2886673B1 (fr) 2013-12-12 2014-11-11 Procédé de fabrication d'objets en alliages de fer- cobalt - molybdène/tungstène - azote inerte

Country Status (12)

Country Link
US (1) US10066279B2 (fr)
EP (1) EP2886673B1 (fr)
JP (1) JP6071984B2 (fr)
KR (1) KR101700680B1 (fr)
CN (1) CN104708005B (fr)
AT (1) AT515148B1 (fr)
CA (1) CA2873761C (fr)
ES (1) ES2745380T3 (fr)
RU (1) RU2599926C2 (fr)
SI (1) SI2886673T1 (fr)
TW (1) TWI537399B (fr)
UA (1) UA113548C2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT515148B1 (de) 2013-12-12 2016-11-15 Böhler Edelstahl GmbH & Co KG Verfahren zur Herstellung von Gegenständen aus Eisen-Cobalt-Molybdän/Wolfram-Stickstoff-Legierungen
US12522898B2 (en) 2020-03-10 2026-01-13 Proterial, Ltd. Method for manufacturing Fe—Co-based alloy bar, and Fe—Co-based alloy bar
US12522900B2 (en) 2021-09-14 2026-01-13 Proterial, Ltd. Fe-Co-based alloy bar
EP4403653A4 (fr) 2021-09-14 2024-11-06 Proterial, Ltd. Matériau de barre en alliage fe-co
JP7848608B2 (ja) * 2021-09-29 2026-04-21 大同特殊鋼株式会社 溶融凝固成形用Ｆｅ基合金及び金属粉末
CN116837272B (zh) * 2021-11-29 2024-07-12 河冶科技股份有限公司 喷射成形耐腐蚀沉淀硬化高速钢
CN116837273B (zh) * 2021-11-29 2024-07-12 河冶科技股份有限公司 喷射成形沉淀硬化高速钢
CN116516262A (zh) * 2023-03-27 2023-08-01 中机新材料研究院(郑州)有限公司 一种高速干切齿轮刀具用粉末冶金材料及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505221B1 (de) 2007-05-08 2009-09-15 Bihler Edelstahl Gmbh Werkzeug mit beschichtung

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US4011108A (en) * 1976-01-19 1977-03-08 Stora Kopparbergs Bergslags Aktiebolag Cutting tools and a process for the manufacture of such tools
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Also Published As

Publication number Publication date
UA113548C2 (xx) 2017-02-10
CA2873761C (fr) 2019-03-19
SI2886673T1 (sl) 2020-07-31
ES2745380T3 (es) 2020-03-02
HK1206681A1 (en) 2016-01-15
AT515148B1 (de) 2016-11-15
JP2015113528A (ja) 2015-06-22
CN104708005B (zh) 2017-10-03
CA2873761A1 (fr) 2015-06-12
US20150167132A1 (en) 2015-06-18
KR101700680B1 (ko) 2017-01-31
RU2599926C2 (ru) 2016-10-20
US10066279B2 (en) 2018-09-04
EP2886673B1 (fr) 2019-06-12
TWI537399B (zh) 2016-06-11
AT515148A1 (de) 2015-06-15
RU2014150364A (ru) 2016-07-10
CN104708005A (zh) 2015-06-17
TW201522662A (zh) 2015-06-16
JP6071984B2 (ja) 2017-02-01
KR20150068912A (ko) 2015-06-22
EP2886673A3 (fr) 2015-08-05

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