EP1046724A2 - Metallmatrix -Faserverbundkörper und Verfahren zu dessen Herstellung - Google Patents
Metallmatrix -Faserverbundkörper und Verfahren zu dessen Herstellung Download PDFInfo
- Publication number
- EP1046724A2 EP1046724A2 EP00890121A EP00890121A EP1046724A2 EP 1046724 A2 EP1046724 A2 EP 1046724A2 EP 00890121 A EP00890121 A EP 00890121A EP 00890121 A EP00890121 A EP 00890121A EP 1046724 A2 EP1046724 A2 EP 1046724A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- matrix
- metal
- ceramic
- fibers
- fiber
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/062—Fibrous particles
-
- 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
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Definitions
- the invention relates to a metal-ceramic material with a matrix of one Heavy metal or a similar alloy, in particular from a Iron-nickel, molybdenum or cobalt-based alloy, and one in this evenly distributed ceramic phase, the particles of which may be a Wear surface layer.
- the invention relates to a method for producing a Material of the type mentioned above.
- Substantially homogeneous materials can by their composition and Treatment, especially thermal or thermomechanical treatment, the Requirements to be adapted to this.
- the metals used seem to be due to alloy and processing measures achievable property level and the same profile no longer a great opportunity for improvement include.
- achievable property level no longer a great opportunity for improvement include.
- stresses on parts Taking into account the use of heterogeneous or composite materials proposed and realized.
- Composite bodies generally consist of at least two parts have different properties and meet each other as required are preferably permanently connected.
- the respective parts take over those Strains for which they are particularly suitable.
- fiber-reinforced composite body is generally known technically and denotes an object consisting of a mostly tough matrix, in which are insoluble high-strength fibers embedded. This item owns consequently advantageous at the same time good toughness and high rigidity and Strength in the direction of the fibers.
- the Fiber material can consist of oxides, borides, nitrides, carbides and mixed forms the same exist.
- the ceramic fibers have consistently high temperature resistance as well as strength and rigidity, cause a so-called reinforcement of a less firm, but tough Matrix metal.
- a correspondingly large length and a similar proportion of Fibers appear to effectively incorporate them into the matrix and the advantageous formation of a property segment of the composite of to be essential.
- the task is in a generic subject solved according to the invention in that the ceramic phase of short fibers is formed, which has a fiber length of at least 5 times, but at most that 15 times the fiber diameter.
- the advantages achieved with the invention are essentially to be seen in an isotropy of the material with significantly improved mechanical properties such as high strength and toughness and resistance to temperature changes. It was completely surprising for the experts that short fibers in a heavy metal matrix can bring about a sudden and pronounced improvement in the mechanical properties and that this is present in all directions. If the fiber length reaches a value of less than 5 times the diameter, then essentially no solidification of the material can be achieved; a transition to a dispersion hardening of the material, which is significantly less with the same concentration of ceramic particles, only occurs with a particle size in the range of 1x 10 -1 ⁇ m. Longer lengths than 15 times the fiber diameter promote the anisotropy of the composite material by breaking the fibers in neighboring areas during high compaction.
- the fibers range in diameter from 0.5 to 14.5 ⁇ m, the reinforcing effect is particularly favorable and Composite material economically feasible. Fibers with a diameter of less than A high proportion of 0.5 ⁇ m can be highly efficient, a homogeneous one However, incorporation into the matrix requires considerable effort. In contrast, fibers with a thickness of greater than 14.5 ⁇ m are increased Risk of breakage during material production exposed.
- the highest material quality is achieved with a fiber diameter of 0.7 to 9.5 ⁇ m reached.
- the fiber material consistently has a high melting or Softening temperature and largely temperature-independent moduli as well Has strength values, are at higher concentrations of the same in the Matrix in particular the properties of the composite Hot conditions raised.
- the material according to the invention for use in undeformed Condition is provided and a fiber content of greater than 20 vol .-%, preferably of greater than 30% by volume, can be used in a favorable manner Parts for high abrasive loads are manufactured.
- the composite body having a fiber content of at most 30% by volume, preferably less than 20% by volume.
- the matrix material of the composite material from an iron-nickel-molybdenum or Cobalt-based alloy with high heat resistance, especially from an alloy with a drop in strength at a temperature above 600 ° C, in particular above 615 ° C.
- the matrix material consists of copper or a copper alloy, can still despite high fiber content and the like mechanical characteristics remarkable heat and electrical conductivity properties of the material can be achieved.
- HIP process hot isostatic pressing of a homogeneous mixture ceramic fibers made of matrix metal powder with a grain size of 15 to 200 ⁇ m, preferably less than 50 ⁇ m, and optionally carbides with one Grain size of less than 25 microns is created.
- the further object of the invention is a process for the production of To create metal-ceramic materials, according to the invention achieved that ceramic fibers as short fibers with a fiber length of at least 5 times, but at most 15 times the Fiber diameter created and with one or more ultimately the matrix forming metal powder with a grain size between 15 and 200 microns and if necessary, mixed homogeneously with a hard material powder and directed on all sides are distributed, whereupon the mixture thus created is sintered.
- the process advantages according to the invention can be seen in particular in that the miscibility of the components is improved so that a homogeneous Distribution of the short fibers can be achieved with less time. Furthermore, there is an all-round alignment of the short fibers and thus a creation good conditions for the production of isotropic material on simple Possible way, smaller grain sizes of the powder have an advantageous effect can. Due to the short fiber length, the mixture can also have a high density in the event of vibration, a so-called high tap density, in the capsule in front of the Sintering can be achieved. When sintering itself, however, they are slightly longer Sintering times apply because higher fiber shares the temperature conduction of the Mix lowered.
- a particularly high quality of the composite material can be achieved if short fibers with a diameter between 0.5 and 14.5 microns, preferably from 0.7 to 9.5 ⁇ m, and a fiber length of preferably at most 12 times the Diameter and with the metal powder that ultimately forms the matrix, which preferably has a grain size of less than 50 microns, mixed and be sintered.
- the metal-ceramic body as a metal powder those made of tool steel, preferably high-speed steel, are used from this high quality tools with compared to conventional products superior cutting and wear resistance properties can be produced. Such Quality increases can also be achieved with non-cutting tools become.
- the mixing of the short fibers with the Metal powder (s) and / or filling a container or a capsule for a subsequent sintering is (are) carried out under a nitrogen atmosphere a largely pore-free sintering favors.
- the one between the fibers and the Metal powder grains of nitrogen trapped in the blank stand, as found was in interaction with the non-metallic and metallic elements and is ultimately used in the metallic Matrix solved, which on the one hand promotes the sintered density and on the other hand benefits fiber embedding.
- the time required can be further reduced, when the mixture is sintered under pressure.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims (20)
- Metall-keramischer Werkstoff mit einer Matrix aus einem Schwermetall oder einer derartigen Legierung, insbesondere aus einer Eisen-Nickel-Molybdän- oder Kobalt - Basislegierung, und einer in dieser gleichmäßig verteilten keramischen Phase, deren Teilchen gegebenenfalls eine Oberflächenschicht tragem, dadurch gekennzeichnet, daß die keramische Phase aus Kurzfasern gebildet ist, die eine Faserlänge von mindestens dem 5-fachen, höchstens jedoch dem 15-fachen, des Faserdurchmessers aufweisen.
- Werkstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Faserlänge höchstens das 10 -fache des Faserdurchmessers beträgt.
- Werkstoff nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fasern einen Durchmesser von 0,5 bis 14,5 um besitzen.
- Werkstoff nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Faserdurchmesser 0,7 bis 9,5 um beträgt.
- Werkstoff nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Faseranteil 5 bis 69 Vol.-% beträgt.
- Werkstoff nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß dieser für eine Verwendung im unverformten Zustand vorgesehen ist und einen Faseranteil von größer als 20 Vol.-%, vorzugweise von größer als 30 Vol.-%, aufweist.
- Werkstoff nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß dieser warmverformt ist, vorzugsweise eine Warmverformung mit einer Verkleinerung der Querschnittsfläche um mindestens 20% aufweist, und einen Faseranteil von höchstens 30 Vol. -%, vorzugsweise von geringer als 20 Vol.-% besitzt.
- Werkstoff nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Matrixwerkstoff aus einer Eisen-Nickel-Molybdän- oder Kobaltbasislegierung mit hoher Warmfestigkeit, insbesondere mit einer Legierung mit einem Festigkeitsabfall über 600°C, insbesondere über 615°C, gebildet ist.
- Werkstoff nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Matrixwerkstoff aus Kupfer oder einer Kupferlegierung besteht.
- Werkstoff nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß dieser durch heißisostatisches Pressen (HIP-Verfahren) einer homogenen Mischung aus keramischen Fasern aus Matrix-Metallpulver mit einer Korngröße von 15 bis 200 µm, vorzugsweise von kleiner als 50 µm, und gegebenenfalls von Karbiden mit einer Korngröße von kleiner als 25 µm erstellt ist.
- Verfahren zur Herstellung von metall-keramischen Werkstoffen mit einer Matrix aus einem Schwermetall oder einer derartigen Legierung, insbesondere aus einer Eisen-Nickel-Molybdän- oder Kobaltbasislegierung und einer in dieser gleichmäßig verteilten keramischen Phase, deren Teilchen gegebenenfalls eine Oberflächenschicht fragen, insbesondere Verfahren zur Herstellung von Gegenständen gemäß den vorgeordneten Ansprüchen, dadurch gekennzeichnet, daß keramische Fasern als Kurzfasern mit einer Faserlänge von mindestens dem 5-fachen, höchstens jedoch dem 15-fachen des Faserdurchmessers erstellt und mit einem oder mehreren letztlich die Matrix bildenden Metallpulver mit einer Korngröße zwischen 15 und 200 µm und gegebenenfalls mit einem Hartstoffpulver homogen gemischt und allseits gerichtet verteilt werden, worauf die derart erstellte Mischung gesintert wird.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß Kurzfasern mit einem Durchmesser zwischen 0,5 und 14,5 µm, vorzugsweise von 0,7 bis 9,5 µm und einer Faserlänge von vorzugsweise höchstens dem 12-fachen des Durchmessers erstellt und mit dem letztlich die Matrix bildenden Metallpulver, welches vorzugsweise eine Korngröße von kleiner als 50 µm aufweist, gemischt werden.
- Verfahren nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß als Metallpulver ein solches aus Werkzeugstahl, vorzugsweise aus Schnellarbeitsstahl, verwendet wird.
- Verfahren nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß die Pulverkörner des Metallpulvers vor oder während des Sinterns oberflächlich mit Stickstoff legiert bzw. aufgestickt werden.
- Verfahren nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, daß das Mischen der Kurzfasern mit dem(den) Metallpulver(n) und/oder ein Befüllen eines Behälters bzw. Einkapseln für ein Sintern unter Stickstoffatmosphäre durchgeführt wird (werden).
- Verfahren nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß das Sintern der Mischung unter Druckeinwirkung erfolgt.
- Verfahren nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß das Sintern der Mischung unter allseitiger Druckbeaufschlagung bzw. durch heißisostatisches Pressen erfolgt.
- Verfahren nach einem der Ansprüche 11 bis 17, dadurch gekennzeichnet, daß der Sinterkörper mit einem Kurzfaseranteil von größer als 20 Vol.-%, vorzugsweise von größer als 30 Vol.-% hergestellt und durch spanabhebende Bearbeitung, zum Beispiel Schleifen, endgeformt wird.
- Verfahren nach einem der Ansprüche 11 bis 17, dadurch gekennzeichnet, daß der Sinterkörper mit einem Kurzfaseranteil von höchstens 25 Vol.-%, vorzugsweise von höchstens 20 Vol. -%, hergestellt und einer Warmverformung unterworfen wird.
- Verwendung eines metall- keramischen Werkstoffes gemäß den Ansprüchen 1 - 10, hergestellt nach einem Verfahren gemäß den Ansprüchen 11 bis 19 zur Schaffung von Druckgießformen sowie für Hochleistungskunststofformen, auch bei extremer Wärmeeinwirkung, und Kaltarbeitswerkzeugen wie Fließstempel, Matrizen und dergleichen mit hoher Verschleiß- und Druckbeanspruchung und für spanabhebende Werkzeuge..
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200030781T SI1046724T1 (sl) | 1999-04-19 | 2000-04-18 | Kompozitni material na osnovi kovinske matrice, ojacene s keramicnimi vlakni, in postopek izdelave le-tega |
AT00890121T ATE306570T1 (de) | 1999-04-19 | 2000-04-18 | Metallmatrix -faserverbundkörper und verfahren zu dessen herstellung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0069699A AT408527B (de) | 1999-04-19 | 1999-04-19 | Metall-keramischer werkstoff und verfahren zu dessen herstellung |
AT69699 | 1999-04-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1046724A2 true EP1046724A2 (de) | 2000-10-25 |
EP1046724A3 EP1046724A3 (de) | 2004-01-07 |
EP1046724B1 EP1046724B1 (de) | 2005-10-12 |
Family
ID=3497418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00890121A Expired - Lifetime EP1046724B1 (de) | 1999-04-19 | 2000-04-18 | Metallmatrix -Faserverbundkörper und Verfahren zu dessen Herstellung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1046724B1 (de) |
AT (1) | AT408527B (de) |
DE (1) | DE50011313D1 (de) |
DK (1) | DK1046724T3 (de) |
ES (1) | ES2250095T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10145179B2 (en) | 2013-12-13 | 2018-12-04 | Halliburton Energy Services, Inc. | Fiber-reinforced tools for downhole use |
US10156098B2 (en) | 2013-12-13 | 2018-12-18 | Halliburton Energy Services, Inc. | Fiber-reinforced tools for downhole use |
US10641045B2 (en) | 2015-04-24 | 2020-05-05 | Halliburton Energy Services, Inc. | Mesoscale reinforcement of metal matrix composites |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521599A (en) * | 1975-10-11 | 1978-08-16 | Sumitomo Aluminium Smelting Co | Process for producing alumina fibre reinforced aluminium composite material |
JPH03188244A (ja) * | 1989-12-18 | 1991-08-16 | Sumitomo Electric Ind Ltd | 焼結合金鋼 |
US5400505A (en) * | 1993-07-23 | 1995-03-28 | Mtu Motoren- Und Turbinen-Union Munchen Gmbh | Method for manufacturing fiber-reinforced components for propulsion plants |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51141704A (en) * | 1975-05-31 | 1976-12-06 | Honda Motor Co Ltd | A process for production of short fibre reinforced composite material |
US4140170A (en) * | 1977-09-06 | 1979-02-20 | Baum Charles S | Method of forming composite material containing sintered particles |
JPS6247409A (ja) * | 1985-08-26 | 1987-03-02 | Nitto Electric Ind Co Ltd | 自溶性合金粉末シ−トとこのシ−トを用いた金属母材の表面改質方法 |
US5413851A (en) * | 1990-03-02 | 1995-05-09 | Minnesota Mining And Manufacturing Company | Coated fibers |
DE4241420C1 (de) * | 1992-12-09 | 1993-11-25 | Mtu Muenchen Gmbh | Verfahren zur Herstellung von Bauteilen oder Substraten mit Verbundbeschichtungen und dessen Anwendung |
-
1999
- 1999-04-19 AT AT0069699A patent/AT408527B/de not_active IP Right Cessation
-
2000
- 2000-04-18 DK DK00890121T patent/DK1046724T3/da active
- 2000-04-18 ES ES00890121T patent/ES2250095T3/es not_active Expired - Lifetime
- 2000-04-18 DE DE50011313T patent/DE50011313D1/de not_active Expired - Lifetime
- 2000-04-18 EP EP00890121A patent/EP1046724B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521599A (en) * | 1975-10-11 | 1978-08-16 | Sumitomo Aluminium Smelting Co | Process for producing alumina fibre reinforced aluminium composite material |
JPH03188244A (ja) * | 1989-12-18 | 1991-08-16 | Sumitomo Electric Ind Ltd | 焼結合金鋼 |
US5400505A (en) * | 1993-07-23 | 1995-03-28 | Mtu Motoren- Und Turbinen-Union Munchen Gmbh | Method for manufacturing fiber-reinforced components for propulsion plants |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 445 (C-0884), 13. November 1991 (1991-11-13) & JP 03 188244 A (SUMITOMO ELECTRIC IND LTD), 16. August 1991 (1991-08-16) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10145179B2 (en) | 2013-12-13 | 2018-12-04 | Halliburton Energy Services, Inc. | Fiber-reinforced tools for downhole use |
US10156098B2 (en) | 2013-12-13 | 2018-12-18 | Halliburton Energy Services, Inc. | Fiber-reinforced tools for downhole use |
US10641045B2 (en) | 2015-04-24 | 2020-05-05 | Halliburton Energy Services, Inc. | Mesoscale reinforcement of metal matrix composites |
Also Published As
Publication number | Publication date |
---|---|
EP1046724B1 (de) | 2005-10-12 |
ATA69699A (de) | 2001-05-15 |
ES2250095T3 (es) | 2006-04-16 |
AT408527B (de) | 2001-12-27 |
DK1046724T3 (da) | 2006-02-06 |
EP1046724A3 (de) | 2004-01-07 |
DE50011313D1 (de) | 2006-02-23 |
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