EP1054072A1 - Nickel base superalloy - Google Patents
Nickel base superalloy Download PDFInfo
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- EP1054072A1 EP1054072A1 EP99810443A EP99810443A EP1054072A1 EP 1054072 A1 EP1054072 A1 EP 1054072A1 EP 99810443 A EP99810443 A EP 99810443A EP 99810443 A EP99810443 A EP 99810443A EP 1054072 A1 EP1054072 A1 EP 1054072A1
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- based superalloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Definitions
- the invention relates to the field of materials technology. It affects one Nickel-based superalloy, especially for the production of single crystal components (SX alloy) or components with a directionally solidified structure (DS alloy), such as blades for gas turbines.
- SX alloy single crystal components
- DS alloy directionally solidified structure
- Such components made of nickel-based superalloys show high Temperatures have a very good material strength. This allows the Inlet temperature of gas turbines can be increased, increasing the efficiency of the Gas turbine rises.
- Grain boundaries are areas of high local disorder of the crystal lattice, because in In these areas the neighboring grains collide and thus a certain one Disorientation exists between the crystal lattices.
- Nitrogen is considered to be a harmful contaminant, one counteracting effect on the grain area and the formation of leads to non-metallic inclusions, for example titanium or tantalum nitrides. Grain defects can form on these inclusions (Metals Handbook, 10. Edition, 1990, ASM International, Vol. 1, p. 1000), which negatively affects the Properties of the alloys.
- the invention tries to avoid all these disadvantages. You have the task based on a nickel-based superalloy (SX or DS alloy) for Manufacture to create single crystal components that differ from the known prior art due to a larger small angle grain size tolerance distinguished and yet very good fatigue properties has low number of cycles and high stress temperatures.
- SX or DS alloy nickel-based superalloy
- the essence of the invention is that the nickel-based superalloy essentially from (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, 10-60 ppm N, balance nickel with There is contamination or that the nickel-based superalloy essentially from (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60
- the advantages of the invention can be seen, inter alia, in that the controlled slight addition of nitrogen to DS or SX nickel based superalloys the carbides have a favorable block-like morphology exhibit. This allows the carbon content to be compared to that known State of the art can be increased without this with a deterioration of Fatigue behavior at low load cycles and high temperatures connected is. The increased carbon content has a positive impact on the Small angle grain boundaries.
- Another advantage is that the block-like morphology of the Carbide the well-known phenomenon of long character-like carbides is eliminated, which oxidize very quickly along its length and therefore the Increase the degree of oxidation of the alloy, this long character-like carbides are often the places where there is a crack start shows.
- the alloy according to the invention is thus characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties.
- an advantage of the invention is that in contrast to the reactive elements such as Mg, Ce or other rare earths Nitrogen does not react with the mask shape during casting, so the Composition of the alloy over the length of the casting always is constant.
- the nickel-based superalloy consists of (in% by weight) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60ppm N, rest of nickel with impurities.
- a nickel-based superalloy is also advantageous (measured in % By weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities.
- These alloys are in themselves known nickel-based superalloys, the composition of which by targeted addition of nitrogen was modified.
- nickel-based superalloys described above a nitrogen content of 15 to 50 ppm, preferably 20 to 40 ppm. Above 60 ppm N, agglomerates of TiN particles form, which lead to a deterioration in properties, so this limit should not be exceeded.
- the invention also relates to single crystal components, for example Buckets of gas turbines made from those described above Alloys according to the invention are produced.
- FIG. 1 and 2 are micrographs of a DS alloy with directionally solidified Structure shown.
- Fig. 1 shows the alloy with 5 ppm nitrogen
- Fig. 2 shows the Alloy with 20 ppm nitrogen.
- nickel-based superalloys SX and DS alloys, i.e. Single crystal alloys and alloys with directed solidified structure controlled with small additions of nitrogen.
- a nickel-based superalloy according to the invention in particular for Manufacture of single crystal components or directionally solidified components consists of (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, and 10-60 ppm N, the rest nickel with Impurities.
- Another nickel-based superalloy according to the invention consists for example of (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, balance nickel with impurities.
- Such an alloy, but without the specified nitrogen content is known from US Pat. No. 5,759,301.
- the invention also relates to a nickel-based superalloy with (measured in Wt%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60 ppm N, balance Ni with impurities.
- CM186 LC nickel-based superalloy with (measured in Wt%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60 ppm N, balance Ni with impurities.
- Such an alloy, but without the specified nitrogen content, is under known as the CM186 LC.
- a further nickel-based superalloy according to the invention comprises (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities.
- C is a grain boundary element that has a positive impact on the Has small angle grain boundaries.
- Figures 1 and 2 illustrate this using an example. They show Micrographs of nickel-based superalloys with a directionally solidified structure (DS alloy) for single crystal components.
- DS alloy directionally solidified structure
- the alloys differ only in their carbon content and nitrogen content, as can be seen in the table below. The values are given in% by weight or in ppm (*). Cr Co W Al Ti Ta C. O 2 * N 2 * L1 11.95 8.95 8.95 3.60 2.00 5.65 0.076 10.0 20.0 VL2 11.89 8.96 8.95 3.75 2.01 5.81 0.064 10.0 5.0
- the alloys according to the invention are characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties.
- the vulnerability to crack start is reduced and the alloys are characterized by a very good fatigue behavior at high temperatures. Because the nitrogen during casting and solidification, which is relatively long with DS alloys lasts, does not react with the mask shape, is the chemical composition along the cast part advantageously constant and thus also the properties.
- the nitrogen content in the SX and DS alloys according to the invention is advantageously 15 to 50 ppm or 20 to 40 ppm.
- a maximum of 60 ppm N should not be exceeded, because then TiN agglomerates form, so that TiN is no longer finely divided and the carbides that form are consequently again adversely their morphology similar to larger Chinese characters Change carbides.
- N (in ppm) (0.01-0.2)
- C (in ppm) N (in ppm) (1.0-5.0)
- wt% Cr N (in ppm) (1.0-4.0)% by weight C + 3% by weight Ti + 0.7% by weight Ta + 0.11 (% by weight W +% by weight Re) + 0.6% by weight % Co - 0.682% by weight Al.
- the nitrogen can be added to the alloy in various forms, for example in solid form as TiN, ZrN, TaN, CrN, BN or other solid Nitride, but also as liquid nitrides.
- the alloy according to the invention can also nitrogen enriched material, e.g. B. Cr, Ti can be produced. Conceivable are still the production in a nitrogen atmosphere or nitrogen containing atmosphere or the injection or blowing over of this gas in or over the alloy as well as pouring the molten Alloy in a nitrogen atmosphere or a nitrogen-containing one The atmosphere.
- the alloy according to the invention is used in particular for the production of Single crystal components (single crystals or directionally solidified structure), for example, turbine blades used by gas turbines.
- Single crystal components single crystals or directionally solidified structure
- turbine blades used by gas turbines.
- Size Components made from the alloy according to the invention can also be divided into others Machines are installed where a stable structure at high temperatures and very good mechanical properties are needed.
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Abstract
Description
Die Erfindung bezieht sich auf das Gebiet der Werkstofftechnik. Sie betrifft eine Nickel-Basis-Superlegierung, insbesondere zur Herstellung von Einkristall-Komponenten (SX-Legierung) oder Komponenten mit gerichtet erstarrtem Gefüge (DS-Legierung), wie beispielsweise Schaufeln für Gasturbinen.The invention relates to the field of materials technology. It affects one Nickel-based superalloy, especially for the production of single crystal components (SX alloy) or components with a directionally solidified structure (DS alloy), such as blades for gas turbines.
Derartige Komponenten aus Nickel-Basis-Superlegierungen weisen bei hohen Temperaturen eine sehr gute Materialfestigkeit auf. Dadurch kann die Einlasstemperatur von Gasturbinen erhöht werden, wodurch die Effizienz der Gasturbine steigt.Such components made of nickel-based superalloys show high Temperatures have a very good material strength. This allows the Inlet temperature of gas turbines can be increased, increasing the efficiency of the Gas turbine rises.
Das Giessen einer perfekten, relativ grossen gerichtet erstarrten EinkristallKomponente aus einer Nickel-Basis-Superlegierung ist aber extrem schwierig, weil die meisten dieser Komponenten Fehler aufweisen, z. B. Korngrenzen, "Frecklen" (das sind Fehlstellen bedingt durch eine Kette von gleichgerichteten Körnern mit einem hohem Gehalt an Eutektikum), äquiaxiale Streugrenzen, Mikroporositäten u. a. Diese Fehler schwächen die Komponenten bei hohen Temperaturen, so dass die gewünschte Lebensdauer bzw. die Betriebstemperatur der Turbine nicht erreicht werden. Da aber eine perfekt gegossene EinkristallKomponente extrem teuer ist, tendiert die Industrie dazu, so viele Defekte wie möglich zuzulassen ohne dass die Lebensdauer oder die Betriebstemperatur beeinträchtigt werden.The casting of a perfect, relatively large directionally solidified single crystal component made of a nickel-based superalloy is extremely difficult because most of these components have defects, e.g. B. grain boundaries, "Frecklen" (these are imperfections caused by a chain of rectified ones Grains with a high eutectic content), equiaxial scatter limits, Microporosities u. a. These errors weaken the components at high Temperatures so that the desired service life or operating temperature the turbine cannot be reached. But since a perfectly cast single crystal component is extremely expensive, the industry tends to have as many defects as possible to allow without reducing the service life or operating temperature be affected.
Einer der häufigsten Fehler sind Korngrenzen, welche besonders schädlich für die Hochtemperatureigenschaften der Einkristall-Artikel sind.One of the most common mistakes are grain boundaries, which are particularly harmful to the High temperature properties of the single crystal articles are.
Korngrenzen sind Gebiete hoher örtlicher Fehlordnung des Kristallgitters, da in diesen Gebieten die Nachbarkörner zusammenstossen und somit eine bestimmte Desorientierung zwischen den Kristallgittern vorhanden ist. Je grösser die Desorientierung ist, desto grösser ist die Fehlordnung, d. h. desto grösser ist die Anzahl der Versetzungen in den Korngrenzen, die notwendig sind, damit die beiden Körner zusammenpassen. Diese Fehlordnung steht in direktem Zusammenhang zum Verhalten des Materials bei hohen Temperaturen. Sie schwächt das Material, wenn sich die Temperatur über die äquikohäsive Temperatur (= 0,5 x Schmelzpunkt in K) erhöht.Grain boundaries are areas of high local disorder of the crystal lattice, because in In these areas the neighboring grains collide and thus a certain one Disorientation exists between the crystal lattices. The bigger the Disorientation, the greater the disorder, d. H. the bigger it is Number of dislocations in the grain boundaries that are necessary for the match the two grains. This disorder is direct Relationship to the behavior of the material at high temperatures. she weakens the material when the temperature is above the equicohesive Temperature (= 0.5 x melting point in K) increased.
Aus GB 2 234 521 A ist dieser Effekt bekannt. So sinkt bei einer konventionellen Nickel-Basis-Einkristall-Legierung beispielsweise bei einer Prüftemperatur von 871 °C die Bruchfestigkeit extrem ab, wenn die Desorientierung der Körner grösser als 6° ist. Dies wurde auch bei Einkristall-Komponenten mit gerichtet erstarrtem Gefüge festgestellt, so dass allgemein die Ansicht vertreten wurde, Desorientierungen grösser als 6° nicht zuzulassen.This effect is known from GB 2 234 521 A. So drops with a conventional Nickel-based single crystal alloy, for example, at a test temperature of 871 ° C the breaking strength drops extremely if the disorientation of the grains is greater than Is 6 °. This was also the case with single crystal components with directionally solidified Structure determined so that the general view was taken Disorientations greater than 6 ° are not permitted.
Aus der genannten GB 2 234 521 A ist auch bekannt, dass durch die Anreicherung von Nickel-Basis-Superlegierungen mit Bor oder Kohlenstoff bei einer gerichteten Erstarrung Gefüge erzeugt werden, welche eine äquiaxiale oder prismatische Kornstruktur aufweisen. Kohlenstoff und Bor festigen die Korngrenzen, da C und B die Ausscheidung von Karbiden und Boriden an den Korngrenzen verursachen, welche bei hohen Temperaturen stabil sind. Ausserdem verringert die Anwesenheit dieser Elemente in den und entlang der Korngrenzen den Diffusionsprozess, der eine Hauptursache der Korngrenzenschwäche ist. Es ist daher möglich, die Desorientierungen auf 12° zu erhöhen und trotzdem gute Eigenschaften des Materials bei hohen Temperaturen zu erzielen, wenn man den Kohlenstoffgehalt höher macht als in konventionellen Einkristall-Legierungen (250 bis 700 ppm), aber niedriger als bei früheren DS-Legierungen (700 bis1600 ppm). Eine obere Grenze ist gegeben durch die wachsende Karbidgrösse, welche das Ermüdungsverhalten bei niedrigen Lastspielzahlen (Low Cycle Fatigue - LCF) verschlechtert.From GB 2 234 521 A mentioned it is also known that through the Enrichment of nickel-based superalloys with boron or carbon a directional solidification structure that is equiaxial or have prismatic grain structure. Carbon and boron solidify them Grain boundaries, since C and B precipitate carbides and borides at the Cause grain boundaries that are stable at high temperatures. It also reduces the presence of these elements in and along the Grain boundaries the diffusion process, which is a major cause of Grain boundary weakness is. It is therefore possible to move the disorientations to 12 ° increase and still good properties of the material at high temperatures to achieve if you make the carbon content higher than in conventional Single crystal alloys (250 to 700 ppm) but lower than previous DS alloys (700 to 1600 ppm). An upper limit is given by the growing carbide size, which shows the fatigue behavior at low Low cycle fatigue (LCF) figures worsened.
Die neuesten SX-Legierungen weisen einen Kohlenstoffgehalt von 500 ppm auf. Dieser Wert wird bezüglich der Defekttoleranz (Toleranz in Bezug auf Kleinwinkelkorngrenzen) als optimal angesehen ("Rene N4: A First Generation Single crystal Turbine Airfoil Alloy", Superalloys, S. 19-26, und "Rene N6: Third Generation Single Crystal Superalloy" , S. 27-34, The Minerals Metals and Materials Society, 1996).The latest SX alloys have a carbon content of 500 ppm. This value is related to the defect tolerance (tolerance with respect to Small angle grain boundaries) are regarded as optimal ("Rene N4: A First Generation Single crystal Turbine Airfoil Alloy ", Superalloys, pp. 19-26, and" Rene N6: Third Generation Single Crystal Superalloy ", pp. 27-34, The Minerals Metals and Materials Society, 1996).
Für alle diese Nickel-Basis-Superlegierungen gilt, dass der Kohlenstoffgehalt durch die Grösse der Karbide, die sich während der Erstarrung bilden, begrenzt wird. Grosse, chinesischen Schriftzeichen ähnliche (chinese script like) Karbide senken die Lebensdauer bei geringen Lastspielzahlen auf etwa die Hälfte der Lebensdauer, wie sie für die gleiche Legierung mit kleinen blockförmigen Karbiden erreicht wird (Metals Handbook, 10. Ausgabe, 1990, ASM International, Vol. 1, S. 991).For all of these nickel-based superalloys, the carbon content applies limited by the size of the carbides that form during solidification becomes. Large Chinese characters like (Chinese script like) carbides reduce the lifespan to around half of the number of cycles Lifespan as for the same alloy with small block-shaped Carbides is achieved (Metals Handbook, 10th edition, 1990, ASM International, Vol. 1, p. 991).
Es ist auch bekannt, dass konventionell gegossene Nickel-Basis-Superlegierungen (äquiaxial oder CC= conventinal cast) mit Zusätzen von Magnesium, Kalzium, Cer oder anderen Seltenen Erden versehen werden können, die die Karbidmorphologie beeinflussen. Diese genannten Elemente weisen eine hohe Reaktivität auf, so dass sie zwar für CC-Legierungen aufgrund der kurzen Kontaktzeiten mit der Maskenform geeignet sind, aber für das Giessen von DS- und SX-Legierungen, bei dem die geschmolzene Legierung lange Zeit mit der Maskenform bei hohen Temperaturen in Kontakt steht, ungeeignet sind, weil diese Zusätze den Siliziumgehalt in der Maskenform reduzieren und zu Schlackenbildung an der Gussoberfläche führen. Ausserdem variieren nachteilig die Mengenanteile dieser Zusätze über der Höhe des Gusses, wobei geringere Anteile im zuletzt erstarrten Teil des Gussstückes vorhanden sind. Dies ist unerwünscht, weil sich dadurch die Karbidmorphologie über die Länge des Gusstückes verändert ist.It is also known that conventionally cast nickel-based superalloys (equiaxial or CC = conventinal cast) with additions of Magnesium, calcium, cerium or other rare earths can be provided that can affect the carbide morphology. These elements mentioned have a high reactivity, so they are due to CC alloys the short contact times with the mask shape are suitable, but for casting of DS and SX alloys, in which the molten alloy lasts a long time in contact with the mask shape at high temperatures, are unsuitable, because these additives reduce and increase the silicon content in the mask shape Cause slag formation on the casting surface. They also vary disadvantageously the proportions of these additives over the height of the cast, being lower Shares are present in the most recently solidified part of the casting. This is undesirable, because this changes the carbide morphology over the length of the Gusstückes is changed.
Weiterhin ist es bekannter Stand der Technik, den Stickstoffgehalt bei SX- und DS-Nickel-Basis-Superlegierungen auf einem absoluten Minimum zu halten. Stickstoff wird als eine schädliches Verunreinigung angesehen, die einen gegenwirkenden Effekt auf den Kornbereich bewirkt und zur Bildung von nichtmetallischen Einschlüssen, beispielsweise Titan- oder Tantal-Nitriden führt. An diesen Einschlüssen können sich Korndefekte bilden (Metals Handbook, 10. Ausgabe, 1990, ASM International, Vol. 1, S. 1000), was sich negativ auf die Eigenschaften der Legierungen auswirkt.Furthermore, it is known prior art, the nitrogen content in SX and Keep DS-Nickel-based superalloys to an absolute minimum. Nitrogen is considered to be a harmful contaminant, one counteracting effect on the grain area and the formation of leads to non-metallic inclusions, for example titanium or tantalum nitrides. Grain defects can form on these inclusions (Metals Handbook, 10. Edition, 1990, ASM International, Vol. 1, p. 1000), which negatively affects the Properties of the alloys.
Die Erfindung versucht, all diese Nachteile zu vermeiden. Ihr liegt die Aufgabe zugrunde, eine Nickel-Basis-Superlegierung (SX- oder DS-Legierung) zur Herstellung von Einkristall-Komponenten zu schaffen, die sich gegenüber dem bekannten Stand der Technik durch eine grössere Kleinwinkelkorngrenzen-Toleranz auszeichnet und trotzdem sehr gute Ermüdungseigenschaften bei niedrigen Lastspielzahlen und hohen Beanspruchungstemperaturen aufweist. The invention tries to avoid all these disadvantages. You have the task based on a nickel-based superalloy (SX or DS alloy) for Manufacture to create single crystal components that differ from the known prior art due to a larger small angle grain size tolerance distinguished and yet very good fatigue properties has low number of cycles and high stress temperatures.
Unter Einkristall-Komponenten sollen Artikel aus Einkristallen und Artikel mit gerichtet erstarrtem Gefüge verstanden werden.Articles made of single crystals and articles should be included under single crystal components solidified structure can be understood.
Erfindungsgemäss wird dies durch die Merkmale des Patentanspruches 1 oder 4 erreicht. Kern der Erfindung ist, dass die Nickel-Basis-Superlegierung im wesentlichen aus (gemessen in Gew.-%) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, 10-60 ppm N, Rest Nickel mit Verunreinigungen besteht oder dass die Nickel-Basis-Superlegierung im wesentlichen aus (gemessen in Gew.-%) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, Rest Nickel mit Verunreinigungen besteht.According to the invention, this is achieved by the features of patent claim 1 or 4 reached. The essence of the invention is that the nickel-based superalloy essentially from (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, 10-60 ppm N, balance nickel with There is contamination or that the nickel-based superalloy essentially from (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, balance There is nickel with impurities.
Die Vorteile der Erfindung sind unter anderem darin zu sehen, dass durch die kontrollierte geringfügige Zugabe von Stickstoff zu DS- oder SX-Nickel-Basis-Superlegierungen die Karbide eine günstige blockähnliche Morphologie aufweisen. Dadurch kann der Kohlenstoffgehalt im Vergleich zum bekannten Stand der Technik erhöht werden, ohne das dies mit einer Verschlechterung des Ermüdungsverhaltens bei niedrigen Lastspielzahlen und hohen Temperaturen verbunden ist. Der erhöhte Kohlenstoffgehalt hat einen positiven Einfluss auf die Kleinwinkelkorngrenzen.The advantages of the invention can be seen, inter alia, in that the controlled slight addition of nitrogen to DS or SX nickel based superalloys the carbides have a favorable block-like morphology exhibit. This allows the carbon content to be compared to that known State of the art can be increased without this with a deterioration of Fatigue behavior at low load cycles and high temperatures connected is. The increased carbon content has a positive impact on the Small angle grain boundaries.
Ein weiterer Vorteil besteht darin, dass durch die blockähnliche Morphologie der Karbide das bekannte Phänomen der langen schriftzeichenähnlichen Karbide beseitigt wird, welche sehr schnell entlang ihrer Länge oxidieren und daher den Oxidationsgrad der Legierung erhöhen, wobei diese langen schriftzeichenähnlichen Karbide oftmals die Orte sind, an denen sich ein Rissstart zeigt. Die erfindungsgemässe Legierung zeichnet sich somit durch eine erhöhte Oxidationsbeständigkeit der Kleinwinkelkorngrenzen sowie verbesserte longitudinale und transversale mechanische Eigenschaften aus.Another advantage is that the block-like morphology of the Carbide the well-known phenomenon of long character-like carbides is eliminated, which oxidize very quickly along its length and therefore the Increase the degree of oxidation of the alloy, this long character-like carbides are often the places where there is a crack start shows. The alloy according to the invention is thus characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties.
Schliesslich besteht ein Vorteil der Erfindung auch noch darin, dass im Gegensatz zu den reaktiven Elementen wie Mg, Ce oder anderen Seltenen Erden der Stickstoff nicht mit der Maskenform während des Giessens reagiert, so dass die Zusammensetzung der Legierung über die Länge des Gussstückes immer konstant ist.Finally, an advantage of the invention is that in contrast to the reactive elements such as Mg, Ce or other rare earths Nitrogen does not react with the mask shape during casting, so the Composition of the alloy over the length of the casting always is constant.
Es ist vorteilhaft, wenn die Nickel-Basis-Superlegierung aus (in Gew.-%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60ppm N, Rest Nickel mit Verunreinigungen besteht.It is advantageous if the nickel-based superalloy consists of (in% by weight) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60ppm N, rest of nickel with impurities.
Von Vorteil ist auch eine Nickel-Basis-Superlegierung umfassend (gemessen in Gew.-%) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, Rest Nickel mit Verunreinigungen. Diese Legierungen sind an sich bekannte Nickel-Basis-Superlegierungen, deren Zusammensetzung durch die gezielte Zugabe von Stickstoff modifiziert wurde.A nickel-based superalloy is also advantageous (measured in % By weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities. These alloys are in themselves known nickel-based superalloys, the composition of which by targeted addition of nitrogen was modified.
Es ist besonders zweckmässig, wenn die oben beschriebenen Nickel-Basis-Superlegierungen einen Stickstoffgehalt von 15 bis 50 ppm, vorzugsweise 20 bis 40 ppm, hat. Oberhalb von 60 ppm N bilden sich Agglomerate von TiN-Teilchen, die zu einer Verschlechterung der Eigenschaften führen, so dass diese Grenze nicht überschritten werden soll.It is particularly useful if the nickel-based superalloys described above a nitrogen content of 15 to 50 ppm, preferably 20 to 40 ppm. Above 60 ppm N, agglomerates of TiN particles form, which lead to a deterioration in properties, so this limit should not be exceeded.
Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben. Further advantageous configurations are described in the subclaims.
Die Erfindung betrifft ausserdem Einkristallkomponenten, beispielsweise Schaufeln von Gasturbinen, die aus den oben beschriebenen erfindungsgemässen Legierungen hergestellt sind.The invention also relates to single crystal components, for example Buckets of gas turbines made from those described above Alloys according to the invention are produced.
In den Fig. 1 und 2 sind Schliffbilder einer DS-Legierung mit gerichtet erstarrtem Gefüge dargestellt. Fig. 1 zeigt die Legierung mit 5 ppm Stickstoff, Fig. 2 zeigt die Legierung mit 20 ppm Stickstoff.1 and 2 are micrographs of a DS alloy with directionally solidified Structure shown. Fig. 1 shows the alloy with 5 ppm nitrogen, Fig. 2 shows the Alloy with 20 ppm nitrogen.
Gemäss vorliegender Erfindung werden Nickel-Basis-Superlegierungen (SX- und DS-Legierungen, d.h. Einkristall-Legierungen und Legierungen mit gerichtet erstarrtem Gefüge) kontrolliert mit geringen Zugaben von Stickstoff versehen.According to the present invention, nickel-based superalloys (SX and DS alloys, i.e. Single crystal alloys and alloys with directed solidified structure) controlled with small additions of nitrogen.
Bisher wurde Stickstoff in derartigen Legierungen immer als unerwünschtes Fremdelement betrachtet, dessen Anteil minimiert werden muss. Obwohl aus dem Stand der Technik ein Zusammenhang zwischen erhöhtem Kohlenstoffgehalt und erhöhter Kleinwinkelkorngrenzen- Toleranz bekannt ist, ist bisher nichts zur Lösung des Problems der Karbidgrösse unternommen worden.So far, nitrogen has always been undesirable in such alloys Foreign element considered, the proportion of which must be minimized. Although from the State of the art a relationship between increased carbon content and increased small angle grain size tolerance is known, so far nothing is available Solution to the carbide size problem has been undertaken.
Eine erfindungsgemässe Nickel-Basis-Superlegierung, insbesondere zur Herstellung von Einkristall-Komponenten oder gerichtet erstarrten Komponenten besteht aus (gemessen in Gew.-%) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, sowie 10-60 ppm N, Rest Nickel mit Verunreinigungen. Eine weitere erfindungsgemässe Nickel-Basis-Superlegierung besteht beispielsweise aus (gemessen in Gew.-%) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, Rest Nickel mit Verunreinigungen. Eine derartige Legierung, aber ohne den angegebenen Stickstoffanteil, ist aus der Patentschrift US 5 759 301 bekannt.A nickel-based superalloy according to the invention, in particular for Manufacture of single crystal components or directionally solidified components consists of (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-1.4% Hf, 0-0.005% Zr, and 10-60 ppm N, the rest nickel with Impurities. Another nickel-based superalloy according to the invention consists for example of (measured in% by weight) 6.0-6.8% Cr, 8.0-10.0% Co, 0.5-0.7% Mo, 6.2-6.7% W, 5.4-5.8% Al, 0.6-1.2% Ti, 6.3-7.0% Ta, 2.7-3.2% Re, 0.02-0.04% C, 40-100 ppm B, 0.15-0.3% Hf, 15-50 ppm Mg, 0-400 ppm Y, 10-60 ppm N, balance nickel with impurities. Such an alloy, but without the specified nitrogen content is known from US Pat. No. 5,759,301.
Die Erfindung betrifft auch eine Nickel-Basis-Superlegierung mit (gemessen in Gew.-%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti,3% Ta,3 % Re, 0.07% C,0.015% B,1,4% Hf,0.005% Zr, 10-60 ppm N, Rest Ni mit Verunreinigungen. Eine derartige Legierung, aber ohne den angegebenen Stickstoffanteil, ist unter dem Namen CM186 LC bekannt.The invention also relates to a nickel-based superalloy with (measured in Wt%) 6% Cr, 9% Co, 0.5% Mo, 8% W, 5.7% Al, 0.7% Ti, 3% Ta, 3% Re, 0.07% C, 0.015% B, 1.4% Hf, 0.005% Zr, 10-60 ppm N, balance Ni with impurities. Such an alloy, but without the specified nitrogen content, is under known as the CM186 LC.
Schliesslich umfasst eine weitere erfindungsgemässe Nickel-Basis-Superlegierung (gemessen in Gew.-%) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, Rest Nickel mit Verunreinigungen.Finally, a further nickel-based superalloy according to the invention comprises (measured in% by weight) 3.0-13.0% Cr, 5.0-15.0% Co, 0-3.0% Mo, 3.5-9.5% W, 3.2-6.0% Al, 0-3.0% Ti, 2.0-10.0% Ta, 0-6.0% Re, 0.002-0.08% C, 0-0.04% B, 0-0.5% Hf, 10-60 ppm N, balance nickel with impurities.
Durch Zugabe von Stickstoff wird eine Ausscheidung von in während der Erstarrung bewirkt. Dies führt dazu, dass sich die Morphologie der Karbide verändert. Die Bildung schädlicher, chinesischen Schriftzeichen ähnlicher länglicher Karbide wird unterdrückt, dagegen bilden sich kleine Karbide mit blockförmiger Morphologie, selbst dann, wenn der Kohlenstoffgehalt bei sonst gleicher chemischer Zusammensetzung innerhalb bestimmter Grenzen erhöht wird. C ist ein Korngrenzen-Element, das einen positiven Einfluss auf die Kleinwinkelkorngrenzen aufweist.By adding nitrogen, an excretion of in during the Solidification causes. This leads to the morphology of the carbides changed. The formation of harmful Chinese characters more similar elongated carbide is suppressed, but small carbides are formed block-shaped morphology, even if the carbon content is otherwise same chemical composition increased within certain limits becomes. C is a grain boundary element that has a positive impact on the Has small angle grain boundaries.
Die Figuren 1 und 2 machen dies an einem Beispiel deutlich. Sie zeigen Schliffbilder von Nickel-Basis-Superlegierungen mit gerichtet erstarrtem Gefüge (DS-Legierung) für Einkristallkomponenten. Figures 1 and 2 illustrate this using an example. they show Micrographs of nickel-based superalloys with a directionally solidified structure (DS alloy) for single crystal components.
Die Legierungen unterscheiden sich in ihrer Zusammensetzung lediglich im
Kohlenstoffgehalt und im Stickstoffgehalt, wie nachfolgender Tabelle zu
entnehmen ist. Die Werte sind in Gew.-% bzw. in ppm (*) angegeben.
Wie in den Fig. 1 und 2 deutlich zu erkennen ist, bilden sich bei der gerichteten Erstarrung in der ersten Legierung L1 (mit höherem Stickstoffgehalt) kleine Karbide mit blockförmiger Morphologie und das, obwohl diese Legierung einen höheren Kohlenstoffgehalt aufweist als die zweite Legierung VL2, während in der zweiten Legierung (Vergleichslegierung VL2) bei der gerichteten Erstarrung grosse Karbide mit schriftzeichenähnlicher Morphologie gebildet werden.As can be clearly seen in FIGS. 1 and 2, the directional form Solidification in the first alloy L1 (with higher nitrogen content) small Carbides with block-shaped morphology, even though this alloy has one has higher carbon content than the second alloy VL2, while in the second alloy (comparative alloy VL2) in directional solidification large carbides with character-like morphology are formed.
Die erfindungsgemässen Legierungen zeichnet sich durch eine erhöhte Oxidationsbeständigkeit der Kleinwinkelkorngrenzen sowie verbesserte longitudinale und transversale mechanische Eigenschaften aus. Die Anfälligkeit zum Rissstart ist herabgesetzt und die Legierungen zeichnen sich durch ein sehr gutes Ermüdungsverhalten bei hohen Temperaturen aus. Da der Stickstoff während des Giessens und Erstarrens, welches bei DS-Legierungen relativ lange dauert, nicht mit der Maskenform reagiert, ist die chemische Zusammensetzung entlang des Gussteiles vorteilhaft konstant und somit auch die Eigenschaften.The alloys according to the invention are characterized by an increased Oxidation resistance of the small-angle grain boundaries as well as improved longitudinal and transverse mechanical properties. The vulnerability to crack start is reduced and the alloys are characterized by a very good fatigue behavior at high temperatures. Because the nitrogen during casting and solidification, which is relatively long with DS alloys lasts, does not react with the mask shape, is the chemical composition along the cast part advantageously constant and thus also the properties.
Der Stickstoffgehalt in den erfindungsgemässen SX- und DS-Legierungen beträgt vorteilhaft 15 bis 50 ppm bzw. 20 bis 40 ppm. Ein Maximum von 60 ppm N sollte nicht überschritten werden, weil sich dann TiN-Agglomerate bilden, so dass das TiN nicht mehr fein verteilt ist und die sich bildenden Karbide demzufolge wieder nachteilig ihre Morphologie zu grösseren chinesischen Schriftzeichen ähnlichen Karbiden ändern.The nitrogen content in the SX and DS alloys according to the invention is advantageously 15 to 50 ppm or 20 to 40 ppm. A maximum of 60 ppm N should not be exceeded, because then TiN agglomerates form, so that TiN is no longer finely divided and the carbides that form are consequently again adversely their morphology similar to larger Chinese characters Change carbides.
Die Stickstoffzugabe kann auch gemäss der folgenden Formeln entweder allein
oder in Kombination erfolgen, wobei die endgültige Stickstoffzugabe die Summe
der Kombinationsergebnisse ist:
N (in ppm) = (0.01-0.2) C (in ppm)
N (in ppm) = (1.0-5.0) Gew.-% Cr
N (in ppm) = (1.0-4.0) Gew.-% C + 3 Gew.-% Ti + 0.7 Gew.-% Ta + 0.11 (Gew.-%
W + Gew.-% Re) + 0.6 Gew.-% Co - 0.682 Gew.-% Al.The nitrogen addition can also be carried out according to the following formulas either alone or in combination, the final nitrogen addition being the sum of the combination results:
N (in ppm) = (0.01-0.2) C (in ppm)
N (in ppm) = (1.0-5.0) wt% Cr
N (in ppm) = (1.0-4.0)% by weight C + 3% by weight Ti + 0.7% by weight Ta + 0.11 (% by weight W +% by weight Re) + 0.6% by weight % Co - 0.682% by weight Al.
Der Stickstoff kann der Legierung in unterschiedlichster Form zugegeben werden, beispielsweise in fester Form als TiN, ZrN, TaN, CrN, BN oder anderes festes Nitrid, aber auch als flüssige Nitride. Die erfindungsgemässe Legierung kann auch mit Stickstoff angereichertem Material, z. B. Cr, Ti hergestellt werden. Denkbar sind weiterhin die Herstellung in einer Stickstoffatmosphäre bzw. einer Stickstoff enthaltenden Atmosphäre oder das Eindüsen oder Darüberblasen dieses Gases in oder über die Legierung ebenso wie das Vergiessen der geschmolzenen Legierung in einer Stickstoffatmosphäre bzw. einer Stickstoff enthaltenden Atmosphäre.The nitrogen can be added to the alloy in various forms, for example in solid form as TiN, ZrN, TaN, CrN, BN or other solid Nitride, but also as liquid nitrides. The alloy according to the invention can also nitrogen enriched material, e.g. B. Cr, Ti can be produced. Conceivable are still the production in a nitrogen atmosphere or nitrogen containing atmosphere or the injection or blowing over of this gas in or over the alloy as well as pouring the molten Alloy in a nitrogen atmosphere or a nitrogen-containing one The atmosphere.
Die erfindungsgemässe Legierung wird insbesondere zur Herstellung von Einkristallkomponenten (Einkristalle oder gerichtet erstarrte Gefüge), beispielsweise Turbinenschaufeln von Gasturbinen verwendet. Selbstverständlich ist die Erfindung nicht auf die gezeigten Ausführungsbeispiele beschränkt. Grosse Komponenten aus der erfindungsgemässen Legierung können auch in andere Maschinen eingebaut werden, wo bei hohen Temperaturen eine stabile Struktur und sehr gute mechanische Eigenschaften benötigt werden.The alloy according to the invention is used in particular for the production of Single crystal components (single crystals or directionally solidified structure), for example, turbine blades used by gas turbines. Of course the invention is not limited to the exemplary embodiments shown. Size Components made from the alloy according to the invention can also be divided into others Machines are installed where a stable structure at high temperatures and very good mechanical properties are needed.
Claims (16)
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy, in particular for the production of single-crystal components or directionally solidified components, comprising (measured in% by weight):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mon
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Remainder nickel with impurities.
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7 % Ti
3% Ta
3% Re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen.A nickel base superalloy according to claim 1 comprising (measured in% by weight):
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7% Ti
3% Ta
3% re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Remainder nickel with impurities.
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Rest Nickel mit Verunreinigungen. A nickel base superalloy according to claim 1 comprising (measured in% by weight):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mon
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% re
0.002-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Remainder nickel with impurities.
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% Re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy, in particular for the production of single-crystal components or directionally solidified components, comprising (measured in% by weight):
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Remainder nickel with impurities.
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy single crystal component consisting of (measured in% by weight):
3.0-13.0% Cr
5.0-15.0% Co
0-3.0% Mon
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% re
0.002-0.08% C
0-0.04% B
0-1.4% Hf
0-0.005% Zr
10-60 ppm N
Remainder nickel with impurities.
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7% Ti
3% Ta
3% Re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy single crystal component consisting of (measured in% by weight):
6% Cr
9% Co
0.5% Mo
8% W
5.7% Al
0.7% Ti
3% Ta
3% re
0.07% C
0.015% B
1.4% Hf
0.005% Zr
10-60 ppm N
Remainder nickel with impurities.
3.0-13.0% Cr
5.0-15.0% Co
0-0.3% Mo
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% Re
0.02-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy single crystal component consisting of (measured in% by weight):
3.0-13.0% Cr
5.0-15.0% Co
0-0.3% Mon
3.5-9.5% W
3.2-6.0% Al
0-3.0% Ti
2.0-10.0% Ta
0-6.0% re
0.02-0.08% C
0-0.04% B
0-0.5% Hf
10-60 ppm N
Remainder nickel with impurities.
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% Re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Rest Nickel mit Verunreinigungen.Nickel-based superalloy single crystal component consisting of (measured in% by weight):
6.0-6.8% Cr
8.0-10.0% Co
0.5-0.7% Mo
6.2-6.7% W
5.4-5.8% Al
0.6-1.2% Ti
6.3-7.0% Ta
2.7-3.2% re
0.02-0.04% C
40-100 ppm B
0.15-0.3% Hf
15-50 ppm Mg
0-400 ppm Y
10-60 ppm N
Remainder nickel with impurities.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE59904846T DE59904846D1 (en) | 1999-05-20 | 1999-05-20 | Nickel-based superalloy |
| EP99810443A EP1054072B1 (en) | 1999-05-20 | 1999-05-20 | Nickel base superalloy |
| US09/572,301 US6419763B1 (en) | 1999-05-20 | 2000-05-18 | Nickel-base superalloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810443A EP1054072B1 (en) | 1999-05-20 | 1999-05-20 | Nickel base superalloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1054072A1 true EP1054072A1 (en) | 2000-11-22 |
| EP1054072B1 EP1054072B1 (en) | 2003-04-02 |
Family
ID=8242839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99810443A Expired - Lifetime EP1054072B1 (en) | 1999-05-20 | 1999-05-20 | Nickel base superalloy |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6419763B1 (en) |
| EP (1) | EP1054072B1 (en) |
| DE (1) | DE59904846D1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468367B1 (en) * | 1999-12-27 | 2002-10-22 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
| US6565680B1 (en) * | 1999-12-27 | 2003-05-20 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
| EP1426457A2 (en) * | 2002-12-06 | 2004-06-09 | General Electric Company | Nickel-base superalloy composition and its use in single-crystal articles |
| EP1914327A1 (en) * | 2006-10-17 | 2008-04-23 | Siemens Aktiengesellschaft | Nickel-base superalloy |
| CN102653832A (en) * | 2012-04-19 | 2012-09-05 | 中国航空工业集团公司北京航空材料研究院 | Novel directed nickel-base high temperature alloy |
| WO2012135093A3 (en) * | 2011-03-30 | 2013-01-17 | General Electric Company | Nickel-base weld materials, processes of using, and components formed therewith |
| CN104736731A (en) * | 2012-10-31 | 2015-06-24 | 通用电气公司 | Nickel-based superalloy and articles |
| EP2942411A1 (en) * | 2014-05-08 | 2015-11-11 | Cannon-Muskegon Corporation | High strength single crystal nickel based superalloy |
| EP2314727B1 (en) | 2009-09-30 | 2016-03-23 | General Electric Company | Nickle-based superalloys and articles |
| DE102015223198A1 (en) * | 2015-11-24 | 2017-05-24 | Siemens Aktiengesellschaft | Nickel-based alloy with improved properties for additive manufacturing processes and component |
| CN107034387A (en) * | 2016-02-04 | 2017-08-11 | 中国科学院金属研究所 | A kind of low segregation nickel-base high-temperature single crystal alloy of high-strength corrosion and heat resistant |
| WO2018083065A1 (en) * | 2016-11-02 | 2018-05-11 | Siemens Aktiengesellschaft | Superalloy without titanium, powder, method and component |
| EP3636784A1 (en) | 2018-10-10 | 2020-04-15 | Siemens Aktiengesellschaft | Nickel based alloy |
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| EP3426811B1 (en) | 2016-03-10 | 2021-05-26 | Nuovo Pignone Tecnologie SrL | High oxidation-resistant alloy, production method and gas turbine applications using the same |
| EP4159342A4 (en) * | 2020-05-26 | 2023-04-12 | Hitachi Metals, Ltd. | Ni-based alloy for hot die, and hot-forging die using same |
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| US6800148B2 (en) * | 1998-11-05 | 2004-10-05 | Rolls-Royce Corporation | Single crystal vane segment and method of manufacture |
| EP1184473B1 (en) * | 2000-08-30 | 2005-01-05 | Kabushiki Kaisha Toshiba | Nickel-base single-crystal superalloys, method of manufacturing same and gas turbine high temperature parts made thereof |
| EP1211336B1 (en) * | 2000-11-30 | 2007-05-30 | ONERA (Office National d'Etudes et de Recherches Aérospatiales) | Nickel based superalloy for single crystal turbine blades of industrial turbines having a high resistance to hot corrosion |
| EP1258545B1 (en) * | 2001-05-14 | 2004-12-01 | ALSTOM Technology Ltd | Method for isothermal brazing of single crystal components |
| US8241560B2 (en) * | 2003-04-28 | 2012-08-14 | Howmet Corporation | Nickel base superalloy and single crystal castings |
| JP4157440B2 (en) * | 2003-08-11 | 2008-10-01 | 株式会社日立製作所 | Single crystal Ni-base superalloy with excellent strength, corrosion resistance and oxidation resistance |
| US6969431B2 (en) * | 2003-08-29 | 2005-11-29 | Honeywell International, Inc. | High temperature powder metallurgy superalloy with enhanced fatigue and creep resistance |
| US20080132994A1 (en) * | 2004-10-08 | 2008-06-05 | Robert Burgermeister | Geometry and non-metallic material for high strength, high flexibility, controlled recoil stent |
| US20100135846A1 (en) | 2008-12-01 | 2010-06-03 | United Technologies Corporation | Lower cost high strength single crystal superalloys with reduced re and ru content |
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| IT1394975B1 (en) * | 2009-07-29 | 2012-08-07 | Nuovo Pignone Spa | NICKEL-BASED SUPERLEGA, MECHANICAL COMPONENT MADE WITH SUCH A SUPERLEGA, TURBOMACCHINA INCLUDING SUCH COMPONENT AND RELATIVE METHODS |
| CN103539349B (en) * | 2012-07-16 | 2016-08-03 | 苏州宏久航空防热材料科技有限公司 | A kind of non-platinum group high-temperature alloy bushing and preparation method thereof |
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| SG11201503276PA (en) | 2012-12-14 | 2015-06-29 | United Technologies Corp | Hybrid turbine blade for improved engine performance or architecture |
| WO2014093826A2 (en) | 2012-12-14 | 2014-06-19 | United Technologies Corporation | Multi-shot casting |
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| FR3073527B1 (en) | 2017-11-14 | 2019-11-29 | Safran | SUPERALLIAGE BASED ON NICKEL, MONOCRYSTALLINE AUBE AND TURBOMACHINE |
| FR3073526B1 (en) | 2017-11-14 | 2022-04-29 | Safran | NICKEL-BASED SUPERALLOY, SINGLE-CRYSTALLINE BLADE AND TURBOMACHINE |
| GB201818180D0 (en) * | 2018-11-08 | 2018-12-26 | Rolls Royce Plc | A nickel-base superalloy |
| US11739398B2 (en) * | 2021-02-11 | 2023-08-29 | General Electric Company | Nickel-based superalloy |
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|---|---|---|---|---|
| US6468367B1 (en) * | 1999-12-27 | 2002-10-22 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
| US6565680B1 (en) * | 1999-12-27 | 2003-05-20 | General Electric Company | Superalloy weld composition and repaired turbine engine component |
| EP1426457A2 (en) * | 2002-12-06 | 2004-06-09 | General Electric Company | Nickel-base superalloy composition and its use in single-crystal articles |
| EP1426457A3 (en) * | 2002-12-06 | 2004-11-03 | General Electric Company | Nickel-base superalloy composition and its use in single-crystal articles |
| EP1914327A1 (en) * | 2006-10-17 | 2008-04-23 | Siemens Aktiengesellschaft | Nickel-base superalloy |
| WO2008046708A1 (en) * | 2006-10-17 | 2008-04-24 | Siemens Aktiengesellschaft | Nickel-base superalloys |
| EP2314727B1 (en) | 2009-09-30 | 2016-03-23 | General Electric Company | Nickle-based superalloys and articles |
| WO2012135093A3 (en) * | 2011-03-30 | 2013-01-17 | General Electric Company | Nickel-base weld materials, processes of using, and components formed therewith |
| CN102653832A (en) * | 2012-04-19 | 2012-09-05 | 中国航空工业集团公司北京航空材料研究院 | Novel directed nickel-base high temperature alloy |
| CN104736731A (en) * | 2012-10-31 | 2015-06-24 | 通用电气公司 | Nickel-based superalloy and articles |
| EP2942411A1 (en) * | 2014-05-08 | 2015-11-11 | Cannon-Muskegon Corporation | High strength single crystal nickel based superalloy |
| US9518311B2 (en) | 2014-05-08 | 2016-12-13 | Cannon-Muskegon Corporation | High strength single crystal superalloy |
| DE102015223198A1 (en) * | 2015-11-24 | 2017-05-24 | Siemens Aktiengesellschaft | Nickel-based alloy with improved properties for additive manufacturing processes and component |
| CN107034387A (en) * | 2016-02-04 | 2017-08-11 | 中国科学院金属研究所 | A kind of low segregation nickel-base high-temperature single crystal alloy of high-strength corrosion and heat resistant |
| EP3426811B1 (en) | 2016-03-10 | 2021-05-26 | Nuovo Pignone Tecnologie SrL | High oxidation-resistant alloy, production method and gas turbine applications using the same |
| WO2018083065A1 (en) * | 2016-11-02 | 2018-05-11 | Siemens Aktiengesellschaft | Superalloy without titanium, powder, method and component |
| US11414727B2 (en) | 2016-11-02 | 2022-08-16 | Siemens Energy Global GmbH & Co. KG | Superalloy without titanium, powder, method and component |
| EP3636784A1 (en) | 2018-10-10 | 2020-04-15 | Siemens Aktiengesellschaft | Nickel based alloy |
| WO2020074187A1 (en) | 2018-10-10 | 2020-04-16 | Siemens Aktiengesellschaft | Nickel based alloy |
| US11441208B2 (en) | 2018-10-10 | 2022-09-13 | Siemens Energy Global GmbH & Co. KG | Nickel based alloy |
| WO2020156779A1 (en) * | 2019-01-29 | 2020-08-06 | Siemens Aktiengesellschaft | Nickel-based alloy for high-temperature applications, and method |
| EP4159342A4 (en) * | 2020-05-26 | 2023-04-12 | Hitachi Metals, Ltd. | Ni-based alloy for hot die, and hot-forging die using same |
Also Published As
| Publication number | Publication date |
|---|---|
| US6419763B1 (en) | 2002-07-16 |
| DE59904846D1 (en) | 2003-05-08 |
| EP1054072B1 (en) | 2003-04-02 |
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