EP0581204A1 - Heat-resistant material - Google Patents
Heat-resistant material Download PDFInfo
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- EP0581204A1 EP0581204A1 EP93111790A EP93111790A EP0581204A1 EP 0581204 A1 EP0581204 A1 EP 0581204A1 EP 93111790 A EP93111790 A EP 93111790A EP 93111790 A EP93111790 A EP 93111790A EP 0581204 A1 EP0581204 A1 EP 0581204A1
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- EP
- European Patent Office
- Prior art keywords
- resistant material
- material according
- highly heat
- content
- heat
- Prior art date
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- 239000003779 heat-resistant material Substances 0.000 title claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- 239000010955 niobium Substances 0.000 claims abstract description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000007792 addition Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 229910000765 intermetallic Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 238000005551 mechanical alloying Methods 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 7
- 229910010038 TiAl Inorganic materials 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000001995 intermetallic alloy Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 229910006281 γ-TiAl Inorganic materials 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229910021324 titanium aluminide Inorganic materials 0.000 description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- -1 alkaline earth metal sulfates Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 239000013589 supplement 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
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- the invention relates to a multi-phase, heat-resistant material made of an alloy based on an intermetallic compound of the ⁇ -TiAl type, in particular for use in heat engines, such as internal combustion engines, gas turbines and aircraft engines.
- thermal engines are increasingly aimed at higher outputs with the same size as possible, whereby the heat load of the individual components increases continuously, so that the materials used are increasingly demanding better heat resistance and strength.
- alloys based on an intermetallic compound of the type ⁇ -TiAl have found increasing interest for such use in heat engines because of the high melting point and low density.
- Numerous developments are concerned with trying to improve the mechanical properties of these high-temperature materials.
- the resistance to corrosion attack at which high operating temperatures play a special role e.g. B. the resistance to the attack of hot combustion gases, gaseous chlorides and sulfur dioxide.
- the alloying of silicon and niobium leads to the formation of a two-phase structure which, compared to the ⁇ -TiAl base alloy, has a significant improvement in the mechanical heat resistance and the creep rupture strength.
- dense protective oxide layers is of particular importance for the titanium aluminides, since they prevent the penetration of oxygen and nitrogen into the core matrix and thus prevent their embrittlement.
- reactive elements such as. As yttrium, hafnium, erbium and lanthanum and other rare earths or combinations of these elements can be provided.
- these oxides and nitrides are thermodynamically much more stable than those of titanium; on the other hand, these elements simultaneously increase the oxidation resistance of the specified intermetallic compounds.
- the production and processing of the high-temperature material according to the invention does not present any particular difficulties, but can be carried out by the customary methods, as are used in such materials.
- a further improvement of the invention provides for the high-temperature material according to the invention to be produced by mechanical alloying with the addition of oxides of the aforementioned reactive elements in order to obtain particularly heat-resistant intermetallic compounds in this way.
- the addition of boron (0.05 to 5 at%) or carbon or nitrogen (0.05 to 1 at%) or combinations of these elements is provided in order to further improve the mechanical properties and a to achieve fine-grained structure. This is achieved in that stable borides, carbides and nitrides or carbonitrides are formed by the additions of boron, carbon and nitrogen mentioned.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Die Erfindung betrifft einen mehrphasigen hochwarmfesten Werkstoff aus einer Legierung auf der Basis einer intermetallischen Verbindung vom Typ γ-TiAl, insbesondere für den Einsatz in Wärmekraftmaschinen, wie Verbrennungsmotoren, Gasturbinen, Flugtriebwerken.The invention relates to a multi-phase, heat-resistant material made of an alloy based on an intermetallic compound of the γ-TiAl type, in particular for use in heat engines, such as internal combustion engines, gas turbines and aircraft engines.
Die Entwicklung der Wärmekraftmaschinen zielt in verstärktem Maße auf höhere Leistungen bei möglichst gleichbleibender Baugröße ab, wodurch sich die Wärmebelastung der einzelnen Komponenten stetig erhöht, so daß von den eingesetzten Werkstoffen in zunehmenden Maße bessere Wärmebeständigkeit als auch Festigkeit gefordert werden.The development of thermal engines is increasingly aimed at higher outputs with the same size as possible, whereby the heat load of the individual components increases continuously, so that the materials used are increasingly demanding better heat resistance and strength.
Neben zahlreichen Entwicklungen auf dem Werkstoffgebiet, z. B. Nickelbasislegierungen, haben insbesondere Legierungen auf der Basis einer intermetallischen Verbindung vom Typ γ-TiAl wegen des hohen Schmelzpunktes bei gleichzeitig geringer Dichte zunehmend Interesse gefunden für einen derartigen Einsatz in Wärmekraftmaschinen. Zahlreiche Entwicklungen befassen sich mit dem Versuch, die mechanischen Eigenschaften dieser Hochtemperaturwerkstoffe zu verbessern. Dabei spielt neben der Verbesserung der mechanischen Eigenschaften insbesondere die Beständigkeit gegen den Korrosionsangriff bei denen hohen Einsatztemperaturen eine besondere Rolle, z. B. die Beständigkeit gegenüber dem Angriff heißer Verbrennungsgase, gasförmiger Chloride sowie von Schwefeldioxid.In addition to numerous developments in the field of materials, e.g. As nickel-based alloys, alloys based on an intermetallic compound of the type γ-TiAl have found increasing interest for such use in heat engines because of the high melting point and low density. Numerous developments are concerned with trying to improve the mechanical properties of these high-temperature materials. In addition to improving the mechanical Properties in particular the resistance to corrosion attack at which high operating temperatures play a special role, e.g. B. the resistance to the attack of hot combustion gases, gaseous chlorides and sulfur dioxide.
Darüberhinaus wird bei tieferen Temperaturen die Lebensdauer durch kondensierte Alkali- und Erdalkalisulfate begrenzt, wodurch eine Ausnutzung des an sich vorhandenen Festigkeitspotentials dieser Werkstoffe verhindert ist, das heißt die an sich von der Hochwarmfestigkeit her gesehen erreichbare Einsatztemperatur wird aufgrund der beschränkten Oxidationsbeständigkeit reduziert.In addition, at lower temperatures the service life is limited by condensed alkali and alkaline earth metal sulfates, which prevents utilization of the inherent strength potential of these materials, i.e. the operating temperature that can be achieved in terms of high heat resistance is reduced due to the limited resistance to oxidation.
Es ist hinlänglich bekannt, daß die Oxidationsbeständigkeit der binären Titan-Aluminiumverbindungen völlig unzureichend ist für die zuvor erwähnten Anwendungsfälle, da die Oxidationsgeschwindigkeit um mehrere Zehnerpotenzen über der von heute verwendeten Superlegierungen liegt und ihre Oxidschichten eine geringe Haftfestigkeit besitzen, was zu einem stetigen Korrosionsabtrag führt. Es ist bekannt, daß Verbindungen auf Titan-Aluminidbasis mit nennenswerten Gehalten an Chrom und Vanadin zwar bei Temperaturen oberhalb von 900°C gute Oxidationsbeständigkeit aufweisen, die vergleichbar ist mit der von heute verwendeten Superlegierungen, aber bei tieferen Temperaturen ein völlig unzureichendes Oxidationsverhalten zeigen, vergleichbar mit dem von binären Titan-Aluminiden, z. B. γ-TiAl.It is well known that the oxidation resistance of the binary titanium-aluminum compounds is completely inadequate for the previously mentioned applications, since the rate of oxidation is several orders of magnitude higher than the superalloys used today and their oxide layers have a low adhesive strength, which leads to a constant corrosion removal. It is known that titanium-aluminide-based compounds with significant chromium and vanadium contents have good oxidation resistance at temperatures above 900 ° C, which is comparable to that of the superalloys used today, but show completely inadequate oxidation behavior at lower temperatures with that of binary titanium aluminides, e.g. B. γ-TiAl.
In gleicher Weise sind die mechanischen Eigenschaften dieser Verbindungen für technische Anwendungen völlig unzureichend. Bei niedrigen Temperaturen haben sie praktisch keine Duktilität, bei höheren Temperaturen weisen sie eine unzureichende Kriechbeständigkeit bzw. Zeitstandfestigkeit auf.In the same way, the mechanical properties of these connections are completely inadequate for technical applications. At low temperatures they have practically no ductility, at higher temperatures they have insufficient creep resistance or creep rupture strength.
Ausgehend von diesem Stand der Technik ist es daher Aufgabe der Erfindung einen Hochtemperaturwerkstoff der eingangs genannten Art zu schaffen, der sowohl über die gewünschten mechanischen Eigenschaften verfügt als auch die erforderliche Korrosionsbeständigkeit aufweist.Starting from this prior art, it is therefore an object of the invention to provide a high-temperature material to create mentioned type, which has both the desired mechanical properties and has the required corrosion resistance.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst (Angaben jeweils in Atom-%). Demgemäß wird eine TiAl-Basislegierung mit einem Aluminiumgehalt von 45 - 60 At-% durch Zulegieren von Silicium (0,1 bis 20 At-%) und Niob (0,1 bis 15 At-%) mit Rest Titan in ihrer Oxidationsbeständigkeit erheblich verbessert. Die angegebenen Zusätze an Silicium führen zur Bildung von Ti₅Si₃-Ausscheidungen und dabei zu einer erheblichen Verringerung der Oxidationsgeschwindigkeit bei gleichzeitig erhöhter Haftung der Oxidschicht. Die angegebenen Zusätze an Niob bewirken insbesondere in Kombination mit Silicium eine weitere Erniedrigung der Oxidationsgeschwindigkeit verbunden mit einer erhöhten Oxidhaftung. Die Zusätze von Silicium und Niob führen zu einem verringerten Anteil an Titandioxid (TiO₂) in der Oxidschicht, welches aufgrund seiner hohen Eigenfehlordnung eine hohe Wachstumsgeschwindigkeit aufweist.This object is achieved according to the invention by the features of patent claim 1 (details in atomic%). Accordingly, a TiAl base alloy with an aluminum content of 45-60 at% by alloying silicon (0.1 to 20 at%) and niobium (0.1 to 15 at%) with the rest of titanium is significantly improved in its oxidation resistance . The specified additions of silicon lead to the formation of Ti₅Si₃-excretions and thereby to a considerable reduction in the rate of oxidation with simultaneous increased adhesion of the oxide layer. The specified additions of niobium, especially in combination with silicon, bring about a further reduction in the rate of oxidation combined with increased oxide adhesion. The addition of silicon and niobium leads to a reduced proportion of titanium dioxide (TiO₂) in the oxide layer, which has a high growth rate due to its high inherent disorder.
Gleichzeitig führt das Zulegieren von Silicium und Niob zur Bildung eines zweiphasigen Gefüges, das gegenüber der γ-TiAl-Basislegierung eine deutliche Verbesserung der mechanischen Warmfestigkeit sowie der Zeitstandfestigkeit aufweist.At the same time, the alloying of silicon and niobium leads to the formation of a two-phase structure which, compared to the γ-TiAl base alloy, has a significant improvement in the mechanical heat resistance and the creep rupture strength.
In weiterer Verbesserung der Erfindung kann vorgesehen sein, die genannten Zusätze, Silicium und Niob, durch Zulegieren von Chrom, Tantal, Wolfram, Molybdän oder Vanadin bzw. von Kombinationen dieser Elemente zu ergänzen bzw. zu ersetzen. Als Legierungsgehalte kommen dabei in Betracht, für Chrom 0,1 bis 20 At-%, für Tantal 0,1 bis 10 At-%, für Wolfram, Molybdän und Vanadin 0,1 bis 5 At-%.In a further improvement of the invention, it can be provided to supplement or replace the additives mentioned, silicon and niobium, by alloying with chromium, tantalum, tungsten, molybdenum or vanadium or combinations of these elements. Alloy contents are suitable here, for chromium 0.1 to 20 at%, for tantalum 0.1 to 10 at%, for tungsten, molybdenum and vanadium 0.1 to 5 at%.
Die Ausbildung dichter schützender Oxidschichten ist für die Titanaluminide von besonderer Bedeutung, da sie das Eindringen von Sauerstoff und Stickstoff in die Kernmatrix und damit deren Versprödung verhindern. Um die Diffusion von gelöstem Sauerstoff und Stickstoff einzudämmen oder doch zumindest erheblich zu reduzieren, kann die Zugabe sogenannter reaktiver Elemente, wie z. B. Yttrium, Hafnium, Erbium und Lanthan sowie andere seltene Erden oder Kombinationen dieser Elemente vorgesehen sein. Einerseits sind diese Oxide und Nitride thermodynamisch erheblich stabiler als die des Titans; andererseits bewirken diese Elemente gleichzeitig eine Erhöhung der Oxidationsbeständigkeit der angegebenen intermetallischen Verbindungen.The formation of dense protective oxide layers is of particular importance for the titanium aluminides, since they prevent the penetration of oxygen and nitrogen into the core matrix and thus prevent their embrittlement. In order to curb the diffusion of dissolved oxygen and nitrogen or at least to reduce it considerably, the addition of so-called reactive elements, such as. As yttrium, hafnium, erbium and lanthanum and other rare earths or combinations of these elements can be provided. On the one hand, these oxides and nitrides are thermodynamically much more stable than those of titanium; on the other hand, these elements simultaneously increase the oxidation resistance of the specified intermetallic compounds.
Die Herstellung und Verarbeitung des erfindungsgemäßen Hochtemperaturwerkstoffs bereitet keine besonderen Schwierigkeiten, sondern kann nach den üblichen Verfahren, wie sie bei derartigen Werkstoffen zum Einsatz kommen, erfolgen, so z. B. durch Feinguß, gerichtete Erstarrung oder auf pulvermetallurgischem Wege.The production and processing of the high-temperature material according to the invention does not present any particular difficulties, but can be carried out by the customary methods, as are used in such materials. B. by investment casting, directional solidification or by powder metallurgy.
In weiterer Verbesserung der Erfindung ist vorgesehen, den erfindungsgemäßen Hochtemperaturwerkstoff unter Zusatz von Oxiden der zuvor genannten reaktiven Elemente durch mechanischen Legieren herzustellen, um auf diese Weise besonders warmfeste intermetallische Verbindungen zu erhalten.A further improvement of the invention provides for the high-temperature material according to the invention to be produced by mechanical alloying with the addition of oxides of the aforementioned reactive elements in order to obtain particularly heat-resistant intermetallic compounds in this way.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Zusatz von Bor (0,05 bis 5 At-%) oder Kohlenstoff oder Stickstoff (0,05 bis 1 At-%) oder Kombinationen dieser Elemente vorgesehen, um eine weitere Verbesserung der mechanischen Eigenschaften sowie ein feinkörniges Gefüge zu erzielen. Dies wird dadurch erreicht, daß durch die genannten Zusätze an Bor, Kohlenstoff und Stickstoff stabile Boride, Carbide und Nitride oder Carbonitride gebildet werden.According to a preferred embodiment of the invention, the addition of boron (0.05 to 5 at%) or carbon or nitrogen (0.05 to 1 at%) or combinations of these elements is provided in order to further improve the mechanical properties and a to achieve fine-grained structure. This is achieved in that stable borides, carbides and nitrides or carbonitrides are formed by the additions of boron, carbon and nitrogen mentioned.
Die letztgenannten Zusätze an Bor, Kohlenstoff und Stickstoff sind insbesondere von Bedeutung im Zusammenhang mit der gerichteten Erstarrung dieser intermetallischen Verbindungen, wodurch die Ausscheidung langgestreckter Verbindungen, wie z. B. von Boriden, Siliciden und ähnlichen Verbindungen, die festigkeitssteigernd wirken.The latter additions of boron, carbon and nitrogen are particularly important in connection with the directional solidification of these intermetallic compounds, whereby the elimination of elongated compounds, such as. B. of borides, silicides and similar compounds that increase strength.
Diese und weitere vorteilhafte Zusammensetzungen sowie Verarbeitungsvorschriften sind Gegenstand der Unteranprüche.These and other advantageous compositions and processing instructions are the subject of the dependent claims.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4224867A DE4224867A1 (en) | 1992-07-28 | 1992-07-28 | Highly heat-resistant material |
| DE4224867 | 1992-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0581204A1 true EP0581204A1 (en) | 1994-02-02 |
Family
ID=6464271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93111790A Withdrawn EP0581204A1 (en) | 1992-07-28 | 1993-07-23 | Heat-resistant material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5393356A (en) |
| EP (1) | EP0581204A1 (en) |
| JP (1) | JPH06184684A (en) |
| DE (1) | DE4224867A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634496A1 (en) * | 1993-07-14 | 1995-01-18 | Honda Giken Kogyo Kabushiki Kaisha | High strength and high ductility TiAl-based intermetallic compound and process for producing the same |
| WO1996030552A1 (en) * | 1995-03-28 | 1996-10-03 | Alliedsignal Inc. | Castable gamma titanium-aluminide alloy containing niobium, chromium and silicon |
| EP3333281A1 (en) * | 2016-12-08 | 2018-06-13 | MTU Aero Engines GmbH | High-temperature protective layer for titanium aluminide alloys |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6551064B1 (en) | 1996-07-24 | 2003-04-22 | General Electric Company | Laser shock peened gas turbine engine intermetallic parts |
| DE19735841A1 (en) * | 1997-08-19 | 1999-02-25 | Geesthacht Gkss Forschung | Titanium aluminide alloy contains niobium |
| US6436208B1 (en) | 2001-04-19 | 2002-08-20 | The United States Of America As Represented By The Secretary Of The Navy | Process for preparing aligned in-situ two phase single crystal composites of titanium-niobium alloys |
| US6767653B2 (en) * | 2002-12-27 | 2004-07-27 | General Electric Company | Coatings, method of manufacture, and the articles derived therefrom |
| DE102004056582B4 (en) * | 2004-11-23 | 2008-06-26 | Gkss-Forschungszentrum Geesthacht Gmbh | Alloy based on titanium aluminides |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4836983A (en) * | 1987-12-28 | 1989-06-06 | General Electric Company | Silicon-modified titanium aluminum alloys and method of preparation |
| US4916028A (en) * | 1989-07-28 | 1990-04-10 | General Electric Company | Gamma titanium aluminum alloys modified by carbon, chromium and niobium |
| DE4001799A1 (en) * | 1989-01-24 | 1990-07-26 | Hagishita Shiro | METHOD FOR PRODUCING AN INTERMETALLIC CONNECTION |
| EP0405134A1 (en) * | 1989-06-29 | 1991-01-02 | General Electric Company | Gamma titanium aluminum alloys modified by chromium and silicon and method of preparation |
| EP0406638A1 (en) * | 1989-07-03 | 1991-01-09 | General Electric Company | Gamma Titanium aluminum alloys modified by chromium and tantalum and method of peparation |
| EP0455005A1 (en) * | 1990-05-04 | 1991-11-06 | Asea Brown Boveri Ag | High temperature alloy for engine components, based on modified titanium aluminide |
| US5076858A (en) * | 1989-05-22 | 1991-12-31 | General Electric Company | Method of processing titanium aluminum alloys modified by chromium and niobium |
| US5149497A (en) * | 1991-06-12 | 1992-09-22 | General Electric Company | Oxidation resistant coatings of gamma titanium aluminum alloys modified by chromium and tantalum |
| EP0521516A1 (en) * | 1991-07-05 | 1993-01-07 | Nippon Steel Corporation | TiAl-based intermetallic compound alloys and processes for preparing the same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1094616A (en) * | 1955-05-23 | |||
| US4891184A (en) * | 1988-12-23 | 1990-01-02 | Mikkola Donald E | Low density heat resistant intermetallic alloys of the Al3 Ti type |
| JP2510141B2 (en) * | 1989-08-18 | 1996-06-26 | 日産自動車株式会社 | Ti-Al lightweight heat resistant material |
| JP2520971B2 (en) * | 1990-05-18 | 1996-07-31 | 住友電気工業株式会社 | Bonding tools |
| US5080860A (en) * | 1990-07-02 | 1992-01-14 | General Electric Company | Niobium and chromium containing titanium aluminide rendered castable by boron inoculations |
| US5098653A (en) * | 1990-07-02 | 1992-03-24 | General Electric Company | Tantalum and chromium containing titanium aluminide rendered castable by boron inoculation |
| JP2678083B2 (en) * | 1990-08-28 | 1997-11-17 | 日産自動車株式会社 | Ti-Al lightweight heat resistant material |
| US5204058A (en) * | 1990-12-21 | 1993-04-20 | General Electric Company | Thermomechanically processed structural elements of titanium aluminides containing chromium, niobium, and boron |
| US5264051A (en) * | 1991-12-02 | 1993-11-23 | General Electric Company | Cast gamma titanium aluminum alloys modified by chromium, niobium, and silicon, and method of preparation |
| JP3320760B2 (en) * | 1991-12-06 | 2002-09-03 | 大陽工業株式会社 | Titanium aluminum alloy |
| US5213635A (en) * | 1991-12-23 | 1993-05-25 | General Electric Company | Gamma titanium aluminide rendered castable by low chromium and high niobium additives |
| US5226985A (en) * | 1992-01-22 | 1993-07-13 | The United States Of America As Represented By The Secretary Of The Air Force | Method to produce gamma titanium aluminide articles having improved properties |
-
1992
- 1992-07-28 DE DE4224867A patent/DE4224867A1/en not_active Ceased
-
1993
- 1993-07-23 EP EP93111790A patent/EP0581204A1/en not_active Withdrawn
- 1993-07-26 JP JP5184182A patent/JPH06184684A/en active Pending
- 1993-07-28 US US08/098,705 patent/US5393356A/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4836983A (en) * | 1987-12-28 | 1989-06-06 | General Electric Company | Silicon-modified titanium aluminum alloys and method of preparation |
| DE4001799A1 (en) * | 1989-01-24 | 1990-07-26 | Hagishita Shiro | METHOD FOR PRODUCING AN INTERMETALLIC CONNECTION |
| US5076858A (en) * | 1989-05-22 | 1991-12-31 | General Electric Company | Method of processing titanium aluminum alloys modified by chromium and niobium |
| EP0405134A1 (en) * | 1989-06-29 | 1991-01-02 | General Electric Company | Gamma titanium aluminum alloys modified by chromium and silicon and method of preparation |
| EP0406638A1 (en) * | 1989-07-03 | 1991-01-09 | General Electric Company | Gamma Titanium aluminum alloys modified by chromium and tantalum and method of peparation |
| US4916028A (en) * | 1989-07-28 | 1990-04-10 | General Electric Company | Gamma titanium aluminum alloys modified by carbon, chromium and niobium |
| EP0455005A1 (en) * | 1990-05-04 | 1991-11-06 | Asea Brown Boveri Ag | High temperature alloy for engine components, based on modified titanium aluminide |
| US5149497A (en) * | 1991-06-12 | 1992-09-22 | General Electric Company | Oxidation resistant coatings of gamma titanium aluminum alloys modified by chromium and tantalum |
| EP0521516A1 (en) * | 1991-07-05 | 1993-01-07 | Nippon Steel Corporation | TiAl-based intermetallic compound alloys and processes for preparing the same |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 16, no. 351 (C-968)29. Juli 1992 & JP-A-04 107233 ( NISSAN MOTOR CO LTD ) 8. April 1992 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634496A1 (en) * | 1993-07-14 | 1995-01-18 | Honda Giken Kogyo Kabushiki Kaisha | High strength and high ductility TiAl-based intermetallic compound and process for producing the same |
| US5514333A (en) * | 1993-07-14 | 1996-05-07 | Honda Giken Kogyo Kabushiki Kaisha | High strength and high ductility tial-based intermetallic compound and process for producing the same |
| WO1996030552A1 (en) * | 1995-03-28 | 1996-10-03 | Alliedsignal Inc. | Castable gamma titanium-aluminide alloy containing niobium, chromium and silicon |
| EP3333281A1 (en) * | 2016-12-08 | 2018-06-13 | MTU Aero Engines GmbH | High-temperature protective layer for titanium aluminide alloys |
| US10590527B2 (en) | 2016-12-08 | 2020-03-17 | MTU Aero Engines AG | High-temperature protective layer for titanium aluminide alloys |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4224867A1 (en) | 1994-02-03 |
| JPH06184684A (en) | 1994-07-05 |
| US5393356A (en) | 1995-02-28 |
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