EP1563111A1 - Magnesium material and use of the same - Google Patents
Magnesium material and use of the sameInfo
- Publication number
- EP1563111A1 EP1563111A1 EP03769481A EP03769481A EP1563111A1 EP 1563111 A1 EP1563111 A1 EP 1563111A1 EP 03769481 A EP03769481 A EP 03769481A EP 03769481 A EP03769481 A EP 03769481A EP 1563111 A1 EP1563111 A1 EP 1563111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material according
- thin layer
- long
- layer
- matrix
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 47
- 239000011777 magnesium Substances 0.000 title abstract description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 title abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 6
- 230000004888 barrier function Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000009792 diffusion process Methods 0.000 claims abstract description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 210000001170 unmyelinated nerve fiber Anatomy 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000005240 physical vapour deposition Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000003999 initiator Substances 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases
- F02F7/0085—Materials for constructing engines or their parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
Definitions
- the invention relates to a magnesium material (hereinafter called Mg material) according to the preamble of claim 1 and uses thereof.
- the invention is therefore based on the object of providing a Mg material of the type mentioned at the outset, the strength of which transversely to the fiber direction is considerably improved, alloy elements of the matrix which form relatively coarse chemical reaction products being avoided on the fibers.
- This object is achieved by the features of claim 1.
- Preferred embodiments of the Mg material according to the invention are characterized in claims 2 to 8.
- the long C fibers are provided with a thin layer which fulfills the following tasks:
- At least one element of the layer material forms a thin, sufficiently homogeneous chemical reaction layer with the respective long carbon fiber;
- the thin layer acts as a diffusion barrier in such a way that the local
- At least one element of the material of the thin layer forms an intermetallic or intermediate connection or mixed crystal zone with the matrix.
- the layer material is expediently formed by carbide formers.
- carbide formers can be, for example, Al, Cr, Ti, Ta, Nb, Hf, Zr or alloys, for example based on Ni, which contain carbide formers.
- the thin layer of the long C fibers can be produced by PVD (physical vapor depositon) or CVD (chemical vapor deposition).
- the PVD process is preferably sputtering.
- the CVD process can be a galvanic, wet chemical or electroless electrochemical process.
- the thin layer of the long C fibers can have a thickness in the range between a few nm and a few ⁇ m.
- the Mg material according to the invention can be made from a matrix with a C long fiber reinforcement for the production of pistons from
- Creep resistance As is known, a slight increase in strength can be achieved if such Mg alloys are reinforced with short fibers or with suitable particles. However, this slight increase in strength is still not sufficient. Adequate strength, rigidity and creep resistance are only achieved with the Mg material according to the invention from a matrix with a C-long fiber reinforcement, the C-long fibers being provided with a thin layer of the type mentioned above. In the Mg material according to the invention, the interfacial strength between the C- Long fibers and the matrix optimized. A suitable design and fiber arrangement can save up to 30% in weight when using the Mg material according to the invention in pistons of internal combustion engines.
- the composite material according to the invention consisting of the matrix and the C-long fiber reinforcement has strengths in the critical areas and directions of an internal combustion engine piston which are comparable to those of high-strength Al alloys.
- the stiffness is even higher than the high-strength AI alloys.
- Force introduction areas such as the bearing eyes for piston pins, grooves for piston rings and possibly piston crowns or combustion chambers can be formed as inserts, which in turn can be made of high-strength metal alloys or composite materials and which have a positive and / or form an integral bond.
- the Mg material according to the invention made of a matrix with a C-long fiber reinforcement, the C-long fibers being provided with a thin layer, as has been described above, can also be used according to the invention for the production of connecting rods of internal combustion engines.
- the currently Connecting rods used in internal combustion engines usually consist of steel or a Ti alloy. Attempts have also been made with GRP and CFRP connecting rods. Weight reduction compared to connecting rods made of steel or Ti alloys can be achieved by using Mg alloys. However, these do not have sufficient strength and rigidity. A slight increase in strength is possible if such Mg alloys are reinforced with short fibers or with particles. However, such an increase in strength is still not sufficient.
- Adequate strength and rigidity can only be obtained by using the Mg material according to the invention made of a matrix with a C long fiber reinforcement with a thin layer, as has been described above, by means of which the interfacial strength between the matrix and the C long fibers is optimized.
- a weight saving of up to 70% can be achieved with the Mg material according to the invention for connecting rods.
- the Mg material according to the invention has strengths in the critical areas and directions of connecting rods which are comparable to those of high-strength Al alloys. The stiffness is even higher than that of Ti alloys.
- Force introduction areas such as the bearing eyes for the piston pins and for the crank pins can be designed as inserts, which in turn can be made from higher-strength metal alloys or from composite materials. These inserts can form a positive and / or a material bond with the component made of the Mg material according to the invention.
- the Mg material according to the invention can also be used according to the invention for the production of sabots for sub-caliber projectiles.
- Known sabotages usually consist of high-strength AI alloys. Weight reduction can be achieved with such sabotages by using Mg alloys.
- the known Mg alloys do not have sufficient mechanical strength. With short fiber or particle reinforcements, only small increases in strength are possible with known Mg alloys.
- the Mg material according to the invention provides a remedy here, so that a weight saving of approximately 20 to 30% can be achieved by suitable design and fiber arrangement of the Mg material according to the invention.
- the Mg composite material with C-long fiber reinforcement according to the invention with the thin coating, as described at the beginning, has strengths in critical areas and directions that the critical areas and directions strengths that are comparable to the strengths of high-strength Al alloys.
- the stiffness is even higher than the high-strength AI alloys.
- Force introduction areas such as > thread to the penetrator can be designed as inserts, which in turn can be made of high-strength metal alloys or composite materials and which can be positively and / or cohesively connected to the component, ie the sabot made of the Mg material according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Diehl Munitionssysteme GmbH & Co. KG.. Fischbachstr.16 . 90552 RöthenbachDiehl Munitionssysteme GmbH & Co. KG .. Fischbachstr. 16. 90552 Röthenbach
Magnesiumwerkstoff und Verwendungen desselbenMagnesium material and uses of the same
Die Erfindung betrifft einen Magnesiumwerkstoff (nachfolgend Mg-Werkstoff genannt) gemäß dem Oberbegriff des Anspruches 1 sowie Verwendungen desselben.The invention relates to a magnesium material (hereinafter called Mg material) according to the preamble of claim 1 and uses thereof.
Um Mg- erkstoffe mit einer C-Langfaser-Verstärkung technisch nutzbar zu machen, ist es notwendig, daß ihre Festigkeit quer zur Faserrichtung erheblich verbessert ist. Zu diesem Zwecke muß eine verbesserte Anbindung der Kohlenstoffasern (C-Fasern) an die Matrix erfolgen. Desweiteren muß vermieden werden, daß Legierungselemente der Matrix an den Fasern örtlich relativ grobe chemische Reaktionsprodukte bilden, weil solche Reaktionsprodukte als Riß- Starter wirken und die mechanische Festigkeit herabsetzen.In order to make Mg materials with a C long fiber reinforcement technically usable, it is necessary that their strength transversely to the fiber direction is considerably improved. For this purpose, an improved connection of the carbon fibers (C fibers) to the matrix must take place. Furthermore, it must be avoided that alloy elements of the matrix form relatively coarse chemical reaction products locally on the fibers, because such reaction products act as crack starters and reduce the mechanical strength.
Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Mg-Werkstoff der eingangs genannten Art zu schaffen, dessen Festigkeit quer zur Faserrichtung erheblich verbessert ist, wobei an den Fasern relativ grobe chemische Reaktionsprodukte bildende Legierungselemente der Matrix vermieden werden. Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. Bevorzugte Ausbildungen des erfindungsgemäßen Mg- Werkstoffes sind in den Ansprüchen 2 bis 8 gekennzeichnet.The invention is therefore based on the object of providing a Mg material of the type mentioned at the outset, the strength of which transversely to the fiber direction is considerably improved, alloy elements of the matrix which form relatively coarse chemical reaction products being avoided on the fibers. This object is achieved by the features of claim 1. Preferred embodiments of the Mg material according to the invention are characterized in claims 2 to 8.
Erfindungsgemäße Verwendungen des erfindungsgemäßen Mg- Werkstoffes sind in den Patentansprüchen 9 bis 11 beansprucht.Uses of the Mg material according to the invention are claimed in claims 9 to 11.
Erfindungsgemäß sind die C-Langfasern mit einer dünnen Schicht versehen, die die folgenden Aufgaben erfüllt:According to the invention, the long C fibers are provided with a thin layer which fulfills the following tasks:
Mindestens ein Element des Schichtwerkstoffes bildet mit der jeweiligen C- Langfaser eine dünne, ausreichend homogene chemische Reaktionsschicht;At least one element of the layer material forms a thin, sufficiently homogeneous chemical reaction layer with the respective long carbon fiber;
die dünne Schicht wirkt als Diffusionsbarriere in der Weise, daß die lokalethe thin layer acts as a diffusion barrier in such a way that the local
Bildung relativ grober chemischer Reaktionsprodukte von Legierungselementen der Matrix an den C-Langfasern verhindert wird; undFormation of relatively coarse chemical reaction products of alloy elements of the matrix on the long C fibers is prevented; and
mindestens ein Element des Werkstoffes der dünnen Schicht bildet eine intermetallische bzw. intermediäre Verbindung oder Mischkristallzone mit der Matrix.at least one element of the material of the thin layer forms an intermetallic or intermediate connection or mixed crystal zone with the matrix.
Bei dem erfindungsgemäßen Mg-Werkstoff ist der Schichtwerkstoff zweckmäßigerweise von Karbidbildnern gebildet. Hierbei kann es sich z.B. um AI, Cr, Ti, Ta, Nb, Hf, Zr oder um Legierungen beispielsweise auf Ni-Basis handeln, die Karbidbildner enthalten. Die dünne Schicht der C-Langfasern kann durch PVD-Verfahren (physical vapor depositon) oder durch CVD-Verfahren (chemical vapor deposition) hergestellt sein. Bei dem PVD-Verfahren handelt es sich vorzugsweise um Sputtern. Bei dem CVD-Verfahren kann es sich um ein galvanisches, naßchemisches oder stromlos elektrochemisches Verfahren handeln.In the Mg material according to the invention, the layer material is expediently formed by carbide formers. These can be, for example, Al, Cr, Ti, Ta, Nb, Hf, Zr or alloys, for example based on Ni, which contain carbide formers. The thin layer of the long C fibers can be produced by PVD (physical vapor depositon) or CVD (chemical vapor deposition). The PVD process is preferably sputtering. The CVD process can be a galvanic, wet chemical or electroless electrochemical process.
Die dünne Schicht der C-Langfasern kann eine Dicke im Bereich zwischen einigen nra und einigen μm aufweisen.The thin layer of the long C fibers can have a thickness in the range between a few nm and a few μm.
Der erfϊndungsgemäße Mg-Werkstoff weist den Vorteil einer hinreichendenThe Mg material according to the invention has the advantage of being sufficient
Querfestigkeit auf, während bekannte C-faserverstärkte Mg- Werkstoffe praktisch nicht eingesetzt werden, weil ihre Festigkeit quer zur Faserrichtung zu gering ist.Cross strength, while known C-fiber-reinforced Mg materials are practically not used because their strength across the grain is too low.
Erfindungsgemäß kann der erfindungsgemäße Mg-Werkstoff aus einer Matrix mit einer C-Langfaser- Verstärkung zur Herstellung von Kolben vonAccording to the invention, the Mg material according to the invention can be made from a matrix with a C long fiber reinforcement for the production of pistons from
Verbrennungsmotoren Verwendung finden. Herkömmliche Kolben von Verbrennungsmotoren bestehen üblicherweise aus Stahl oder einer AI-Legierung. Eine erwünschte Gewichtsreduktion im Vergleich zu Kolben aus Stahl oder aus AI-Legierungen ist durch die Verwendung von Mg-Legierungen realisierbar. Diese besitzen jedoch bislang keine ausreichende Festigkeit, Steifigkeit undFind internal combustion engines. Conventional pistons of internal combustion engines usually consist of steel or an Al alloy. A desired weight reduction in comparison to pistons made of steel or Al alloys can be achieved by using Mg alloys. However, these have not yet had sufficient strength, rigidity and
Kriechbeständigkeit. Eine geringe Festigkeitssteigerung ist bekanntermaßen erzielbar, wenn solche Mg-Legierungen mit Kurzfasem oder mit geeigneten Partikeln verstärkt sind. Auch diese geringe Festigkeitssteigerung ist jedoch noch nicht ausreichend. Eine ausreichende Festigkeit, Steifigkeit und Kriechbeständigkeit wird erst mit dem erfindungsgemäßen Mg-Werkstoff aus einer Matrix mit einer C-Langfaser- Verstärkung erreicht, wobei die C-Langfasern mit einer dünnen Schicht der oben genannten Art versehen sind. Bei dem erf ndungsgemäßen Mg-Werkstoff ist die Grenzflächenfestigkeit zwischen den C- Langfasern und der Matrix optimiert. Durch geeignete Gestaltung und Faseranordnung kann bei Verwendung des erfindungsgemäßen Mg- Werkstoffes bei Kolben von Verbrennungsmotoren eine Gewichtseinsparung von bis zu 30% erreicht werden. Der erfindungsgemäße Verbundwerkstoff aus der Matrix und der C-Langfaser- Verstärkung weist in den kritischen Bereichen und Richtungen eines Verbrennungsmotor-Kolbens Festigkeiten auf, die denen hochfester AI- Legierungen vergleichbar sind. Die Steifigkeiten sind sogar höher als die hochfester AI-Legierungen. Krafteinleitungsbereiche wie beispielsweise die Lageraugen für Kolbenbolzen, Nuten für Kolbenringe und gegebenenfalls Kolbenböden bzw. Brennkammern können als Inserts ausgebildet werden, die ihrerseits aus höherfesten Metallegierungen oder aus Verbundwerkstoffen hergestellt sein können und die mit dem Bauteil aus dem erfindungsgemäßen Mg- Werkstoff einen formschlüssigen und/oder einen stoffschlüssigen Verbund bilden.Creep resistance. As is known, a slight increase in strength can be achieved if such Mg alloys are reinforced with short fibers or with suitable particles. However, this slight increase in strength is still not sufficient. Adequate strength, rigidity and creep resistance are only achieved with the Mg material according to the invention from a matrix with a C-long fiber reinforcement, the C-long fibers being provided with a thin layer of the type mentioned above. In the Mg material according to the invention, the interfacial strength between the C- Long fibers and the matrix optimized. A suitable design and fiber arrangement can save up to 30% in weight when using the Mg material according to the invention in pistons of internal combustion engines. The composite material according to the invention consisting of the matrix and the C-long fiber reinforcement has strengths in the critical areas and directions of an internal combustion engine piston which are comparable to those of high-strength Al alloys. The stiffness is even higher than the high-strength AI alloys. Force introduction areas such as the bearing eyes for piston pins, grooves for piston rings and possibly piston crowns or combustion chambers can be formed as inserts, which in turn can be made of high-strength metal alloys or composite materials and which have a positive and / or form an integral bond.
Der erfindungsgemäße Mg-Werkstoff aus einer Matrix mit einer C-Langfaser- Verstärkung, wobei die C-Langfasern mit einer dünnen Schicht versehen sind, wie sie oben beschrieben worden ist, kann erfindungsgemäß auch zur Herstellung von Pleuelstangen von Verbrennungsmotoren Verwendung finden. Die z.Zt. in Verbrennungsmotoren eingesetzten Pleuelstangen bestehen üblicherweise aus Stahl oder aus einer Ti-Legierung. Es wurden auch bereits Versuche mit GFK- und CFK-Pleuelstangen unternommen. Eine Gewichtsreduktion im Vergleich zu Pleuelstangen aus Stahl oder Ti-Legierungen kann durch die Verwendung von Mg-Legierungen realisiert werden. Diese besitzen jedoch keine ausreichende Festigkeit und Steifigkeit. Eine geringe Festigkeitssteigerung ist möglich, wenn solche Mg-Legierungen mit Kurzfasern oder mit Partikeln verstärkt werden. Auch eine solche Festigkeitssteigerung ist jedoch noch nicht ausreichend. Eine ausreichende Festigkeit und Steifigkeit ergibt sich erst durch die Verwendung des erfindungsgemäßen Mg-Werkstoffs aus einer Matrix mit einer C-Langfaser- Verstärkung mit einer dünnen Schicht, wie sie oben beschrieben worden ist, durch die die Grenzflächenfestigkeit zwischen der Matrix und den C-Langfasern optimiert wird. Durch geeignete Gestaltung und Faseranordnung kann mit dem erfindungsgemäßen Mg-Werkstoff bei Pleuelstangen eine Gewichtseinsparung von bis zu 70% erreicht werden. Der erfindungsgemäße Mg-Werkstoff weist in den kritischen Bereichen und Richtungen von Pleuelstangen Festigkeiten auf, die denen von hochfesten AI-Legierungen vergleichbar sind. Die Steifigkeiten sind sogar höher als die von Ti-Legierungen. Krafteinleitungsbereiche wie die Lageraugen für die Kolbenbolzen und für die Kurbelzapfen können als Inserts ausgeführt werden, die ihrerseits aus höherfesten Metallegierungen oder aus Verbundwerkstoffen hergestellt sein können. Diese Inserts können mit dem Bauteil aus dem erfindungsgemäßen Mg-Werkstoff einen formschlüssigen und/oder einen stoffschlüssigen Verbund bilden.The Mg material according to the invention made of a matrix with a C-long fiber reinforcement, the C-long fibers being provided with a thin layer, as has been described above, can also be used according to the invention for the production of connecting rods of internal combustion engines. The currently Connecting rods used in internal combustion engines usually consist of steel or a Ti alloy. Attempts have also been made with GRP and CFRP connecting rods. Weight reduction compared to connecting rods made of steel or Ti alloys can be achieved by using Mg alloys. However, these do not have sufficient strength and rigidity. A slight increase in strength is possible if such Mg alloys are reinforced with short fibers or with particles. However, such an increase in strength is still not sufficient. Adequate strength and rigidity can only be obtained by using the Mg material according to the invention made of a matrix with a C long fiber reinforcement with a thin layer, as has been described above, by means of which the interfacial strength between the matrix and the C long fibers is optimized. With a suitable design and fiber arrangement, a weight saving of up to 70% can be achieved with the Mg material according to the invention for connecting rods. The Mg material according to the invention has strengths in the critical areas and directions of connecting rods which are comparable to those of high-strength Al alloys. The stiffness is even higher than that of Ti alloys. Force introduction areas such as the bearing eyes for the piston pins and for the crank pins can be designed as inserts, which in turn can be made from higher-strength metal alloys or from composite materials. These inserts can form a positive and / or a material bond with the component made of the Mg material according to the invention.
Der erfindungsgemäße Mg-Werkstoff kann erfindungsgemäß auch zur Herstellung von Treibspiegeln für unterkalibrige Geschosse Verwendung finden. Bekannte Treibspiegel bestehen üblicherweise aus hochfesten AI-Legierungen. Eine Gewichtsreduktion kann bei solchen Treibspiegeln durch die Verwendung von Mg-Legierungen erreicht werden. Die bekannten Mg-Legierungen besitzen jedoch keine ausreichende mechanische Festigkeit. Mit Kurzfaser- oder Partikelverstärkungen sind bei bekannten Mg-Legierungen nur geringe Festigkeitssteigerungen möglich. Hier schafft der erfindungsgemäße Mg-Werkstoff Abhilfe, so daß durch geeignete Gestaltung und Faseranordnung des erfindungsgemäßen Mg- Werkstoffes eine Gewichtseinsparung von ca. 20 bis 30% erreicht werden kann. Der erfindungsgemäße Mg- Verbundwerkstoff mit C- Langfaserverstärkung mit der dünnen Beschichtung, wie sie eingangs beschrieben worden ist, weist in kritischen Bereichen und Richtungen Festigkeiten auf, die den kritischen Bereichen und Richtungen Festigkeiten auf, die den Festigkeiten hochfester AI-Legierungen vergleichbar sind. Die Steifigkeiten sind sogar höher als die hochfester AI-Legierungen. Krafteinleitungsbereiche wie z.B. > Gewinde zum Penetrator können als Inserts gestaltet sein, die ihrerseits aus höherfesten Metallegierungen oder aus Verbundwerkstoffen hergestellt sein können und die mit dem Bauteil, d.h. dem Treibspiegel aus dem erfindungsgemäßen Mg- Werkstoff formschlüssig und/oder stoffschlüssig verbunden sein können. The Mg material according to the invention can also be used according to the invention for the production of sabots for sub-caliber projectiles. Known sabotages usually consist of high-strength AI alloys. Weight reduction can be achieved with such sabotages by using Mg alloys. The known Mg alloys, however, do not have sufficient mechanical strength. With short fiber or particle reinforcements, only small increases in strength are possible with known Mg alloys. The Mg material according to the invention provides a remedy here, so that a weight saving of approximately 20 to 30% can be achieved by suitable design and fiber arrangement of the Mg material according to the invention. The Mg composite material with C-long fiber reinforcement according to the invention with the thin coating, as described at the beginning, has strengths in critical areas and directions that the critical areas and directions strengths that are comparable to the strengths of high-strength Al alloys. The stiffness is even higher than the high-strength AI alloys. Force introduction areas such as > thread to the penetrator can be designed as inserts, which in turn can be made of high-strength metal alloys or composite materials and which can be positively and / or cohesively connected to the component, ie the sabot made of the Mg material according to the invention.
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002151119 DE10251119A1 (en) | 2002-11-02 | 2002-11-02 | Magnesium material, used in production of I.C. engine pistons or connecting rods, comprises matrix with carbon longitudinal fiber reinforcement with thin layer |
| DE10251119 | 2002-11-02 | ||
| PCT/EP2003/012174 WO2004042103A1 (en) | 2002-11-02 | 2003-10-31 | Magnesium material and use of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1563111A1 true EP1563111A1 (en) | 2005-08-17 |
Family
ID=32115146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03769481A Withdrawn EP1563111A1 (en) | 2002-11-02 | 2003-10-31 | Magnesium material and use of the same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060051565A1 (en) |
| EP (1) | EP1563111A1 (en) |
| AU (1) | AU2003278169A1 (en) |
| DE (1) | DE10251119A1 (en) |
| WO (1) | WO2004042103A1 (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2081237A1 (en) * | 1970-03-20 | 1971-12-03 | Onera (Off Nat Aerospatiale) | Fibre impregnated composites - by forming a eutectic alloy in situ over the fibres |
| US4056874A (en) * | 1976-05-13 | 1977-11-08 | Celanese Corporation | Process for the production of carbon fiber reinforced magnesium composite articles |
| US4223075A (en) * | 1977-01-21 | 1980-09-16 | The Aerospace Corporation | Graphite fiber, metal matrix composite |
| JPS6169448A (en) * | 1984-09-14 | 1986-04-10 | 工業技術院長 | Carbon fiber reinforced metal and manufacture thereof |
| US4732779A (en) * | 1985-05-21 | 1988-03-22 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Fibrous material for composite materials, fiber-reinforced metal produced therefrom, and process for producing same |
| US4778722A (en) * | 1986-05-15 | 1988-10-18 | Ube Industries, Ltd. | Reinforcing fibers and composite materials reinforced with said fibers |
| US4961990A (en) * | 1986-06-17 | 1990-10-09 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Fibrous material for composite materials, fiber-reinforced composite materials produced therefrom, and process for producing same |
| DE68923268T2 (en) * | 1988-08-12 | 1995-11-16 | Ube Industries | CARBIDE FIBERS WITH HIGH STRENGTH AND HIGH ELASTICITY MODULES AND POLYMER COMPOSITION THEREFOR. |
| FR2695409B1 (en) * | 1992-09-10 | 1994-11-25 | Aerospatiale | Composite material combining a magnesium alloy containing zirconium with a carbon reinforcement, and its manufacturing process. |
| CN1142119C (en) * | 1994-08-09 | 2004-03-17 | 株式会社丰田中央研究所 | Composite material, preparation method thereof, thermistor material composed of composite material and preparation method thereof |
| DE19751929A1 (en) * | 1997-11-22 | 1999-05-27 | Ks Aluminium Technologie Ag | Method for producing a casting |
| EP1477467B1 (en) * | 2003-05-16 | 2012-05-23 | Hitachi Metals, Ltd. | Composite material having high thermal conductivity and low thermal expansion coefficient, and heat-dissipating substrate |
-
2002
- 2002-11-02 DE DE2002151119 patent/DE10251119A1/en not_active Withdrawn
-
2003
- 2003-10-31 AU AU2003278169A patent/AU2003278169A1/en not_active Abandoned
- 2003-10-31 US US10/533,487 patent/US20060051565A1/en not_active Abandoned
- 2003-10-31 EP EP03769481A patent/EP1563111A1/en not_active Withdrawn
- 2003-10-31 WO PCT/EP2003/012174 patent/WO2004042103A1/en not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004042103A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060051565A1 (en) | 2006-03-09 |
| AU2003278169A1 (en) | 2004-06-07 |
| WO2004042103A1 (en) | 2004-05-21 |
| DE10251119A1 (en) | 2004-05-19 |
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