CN106282668B - A kind of nickel base superalloy and preparation method thereof - Google Patents
A kind of nickel base superalloy and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of nickel base superalloy and preparation method thereof, especially a kind of high Co metallurgy nickel alloy of powder and thus obtained manufacture article, by mass percentage composition include：Co：25~27%, Cr：12.5~13.5%, Al：3.0~3.4%, Ti：3.5~3.9%, W：3.75~4.25%, Mo：3.75~4.25%, Nb：0.75~1.15%, Hf：0.17~0.23%, C：0.04~0.06%, B：0.003~0.015%, Zr：0.03~0.07%, surplus Ni.There is the high temperature alloy that the present invention designs better structure stability and elevated temperature strength, alloy temperature capability to further increase.
Description
Technical field
The present invention relates to technical field of high temperature alloy more particularly to a kind of nickel base superalloy and preparation method thereof.
Background technology
Usually, high temperature alloy refers to the high temperature gold for capableing of long-term work at 600 DEG C or more and under certain stress condition
Belong to material, there is excellent elevated temperature strength, good anti-oxidant and hot corrosion resistance, good fatigue behaviour, fracture toughness
Etc. comprehensive performances.With the high speed development of industry, high temperature alloy has shown good application prospect in every field, mainly
The high-temperature portions such as turbo blade, guide vane, the turbine disk, high-pressure compressor disk and combustion chamber for manufacturing gas-turbine unit
Part.
High-temperature alloy material can be divided into wrought superalloy, cast superalloy and powder metallurgy high temperature according to preparation process
Alloy.High-temperature alloy material can be divided mainly into iron-base superalloy, nickel base superalloy and cobalt base superalloy by matrix element.
Since iron-base superalloy tissue is not sufficiently stable, inoxidizability is poor, and elevated temperature strength is insufficient, cannot be answered under the conditions of higher temperature
With can only be used under the conditions of moderate temperature (600~800 DEG C)；And cobalt is a kind of important strategic resource, it is most of in the world
The scarce cobalt of country, so that, the development of cobalt-base alloys receives the limitation of cobalt resource.Thus, using nickel as matrix, (content is generally higher than
50%) nickel base superalloy becomes most widely used, the highest a kind of alloy of elevated temperature strength in current high temperature alloy,
Within the scope of 650~1000 DEG C have compared with intensity and good inoxidizability, resistance to combustion gas corrosion ability high temperature alloy.Ni-based height
Temperature alloy has many advantages, such as, first, more alloying element can be dissolved, and can keep preferable stability；Second is that can be with shape
It is mutually used as hardening constituent at the orderly A3B type intermetallic compounds γ '-[Ni (Al, Ti)] of coherence, makes obtaining effectively by force for alloy
Change, obtains elevated temperature strength more higher than iron-base superalloy and cobalt base superalloy；Third, the nickel-base alloy containing chromium has than iron
The better anti-oxidant and resistance to combustion gas corrosion ability of based high-temperature alloy, usually its can contain ten multiple elements, and Cr mainly rise it is anti-
Oxidation and anticorrosive effect, other elements mainly play invigoration effect.
Although nickel base superalloy has high temperature microstructure stability, antifatigue, the corrosion-resistant and performances such as anti-oxidant, high
The nickel-base alloy of warm long service will appear bright in terms of the mechanical properties such as fatigue strength, yield strength and ultimate tensile strength
It is aobvious to decline.
Thus, the stability and mechanical behavior under high temperature of the nickel-base alloy of high temperature long service how are improved, in the industry urgently
Critical issue to be solved.
Invention content
The technical problem to be solved in the present invention is to provide a kind of nickel base superalloy and preparation method thereof, especially a kind of
High Co metallurgy nickel alloy.Nickel base superalloy provided by the invention has preferable mechanical property under conditions of long term high temperature
Stability.
The invention discloses a kind of high temperature alloys, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
Preferably, include 25.5~26.5% Co.
Preferably, include 12.7~13.3% Cr.
Preferably, include 3.1~3.3% Al.
Preferably, include 3.6~3.8% Ti.
Preferably, include 3.85~4.15% W.
Preferably, include 3.85~4.15% Mo.
Preferably, include 0.85~1.05% Nb.
The present invention provides a kind of high temperature alloy, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
The present invention also provides a kind of high temperature alloys, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
The present invention provides a kind of article, which is characterized in that the article is used for gas-turbine unit, and presses quality percentage
Than composition, including the high temperature alloy formed by following element：
Surplus is Ni.
Preferably, include 25.5~26.5% Co.
Preferably, include 12.7~13.3% Cr.
Preferably, include 3.1~3.3% Al.
Preferably, include 3.6~3.8% Ti.
Preferably, include 3.85~4.15% W.
Preferably, include 3.85~4.15% Mo.
Preferably, include 0.85~1.05% Nb.
Preferably, which is characterized in that the article is used for the hot-end component of gas-turbine unit.
The present invention provides a kind of article, which is characterized in that the article is used for gas-turbine unit, and presses quality percentage
Than composition, including the high temperature alloy formed by following element：
Surplus is Ni.
Preferably, the article is used for the hot-end component of gas-turbine unit.
The present invention also provides a kind of articles, which is characterized in that the article is used for gas-turbine unit, and presses quality hundred
Divide than composition, including the high temperature alloy formed by following element：
Surplus is Ni.
Preferably, the article is used for the hot-end component of gas-turbine unit.
A kind of nickel base superalloy of the present invention and preparation method thereof, especially a kind of high Co metallurgy nickel alloy of powder, and
Thus obtained manufacture article, by mass percentage composition include：Co：25~27%, Cr：12.5~13.5%, Al：3.0~
3.4%, Ti：3.5~3.9%, W：3.75~4.25%, Mo：3.75~4.25%, Nb：0.75~1.15%, Hf：0.17~
0.23%, C：0.04~0.06%, B：0.003~0.015%, Zr：0.03~0.07%, surplus Ni.With prior art phase
Than the present invention replaces Ta members usually to improve the threshold value that TCP phases are formed by using Nb elements, to reduce high-temperature alloy material
Precipitation ability during high temperature is on active service for a long time improves materials microstructure stability.It is improved by increasing the content of Co
Solid solution strengthening effect, addition alloying element Hf improve the stability of γ ' phases.Moreover, Hf can not only enter in γ ', MC and γ phases
Its stability is improved, can also be combined with oxygen, crystal boundary, Hf or carbide is purified, can be formed in powder particle
More stable carbide effectively improves the precipitation of primary granule border (PPB), to which fundamentally, solution high temperature takes for a long time
The TCP phases (topological solid matter phase, as sigma phases, μ are equal) of the nickel base superalloy of labour, generation seriously affect the tired of alloy material
The roughening of γ ' phases can also reduce the yield strength of alloy material during the problem of labor performance and high-temperature service and the limit resists
The phenomenon that tensile strength.The experimental results showed that indices can be better than existing high temperature alloy, especially existing powder smelting
Golden high temperature alloy.Using the high temperature alloy designed by the present invention, the article of preparation especially prepares gas-turbine unit, especially
It is to prepare its crucial hot-end component, all has the structure stability of preferable mechanical property and high temperature long service, and preferably
Alloy temperature capability.
Description of the drawings
Fig. 1 is that the high temperature alloy CSU-A1 in the embodiment of the present invention 1 exists with the typical powder metallurgy high-temperature alloy of the second generation
γ ' hardening constituent content balance figures at 870 DEG C；
Fig. 2 is high temperature alloy CSU-A1 and the typical powder metallurgy high-temperature alloy of the second generation in the embodiment of the present invention 1
γ ' is mutually completely dissolved temperature comparisons' figure；
Fig. 3 is high temperature alloy CSU-A1 and the typical powder metallurgy high-temperature alloy of the second generation in the embodiment of the present invention 1
The beginning Precipitation Temperature of harmful phase Σ phases is schemed with temperature comparisons are completely dissolved；
Fig. 4 is high temperature alloy CSU-A1 and the typical powder metallurgy high-temperature alloy of the second generation in the embodiment of the present invention 1
The maximum molar content comparison diagram of harmful phase Σ phases；
Fig. 5 is high temperature alloy CSU-A1 and the typical powder metallurgy high-temperature alloy of the second generation in the embodiment of the present invention 1
The difference comparison diagram of solid-liquid phase line.
Specific implementation mode
In order to further appreciate that the present invention, the preferred embodiments of the invention are described with reference to embodiment, but
It is it should be appreciated that these descriptions are only the feature and advantage further illustrated the present invention rather than to patent requirements of the present invention
Limitation.
Its source is not particularly limited in the raw materials used in the present invention, buying on the market or according to art technology
Preparation method known to personnel is prepared.
High temperature alloy of the present invention and its article of preparation, it is not special to the source of preparation method and other raw materials
Limitation, is prepared according to preparation method well known to those skilled in the art or buys on the market.
The invention discloses a kind of high temperature alloys, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
High temperature alloy provided by the invention, i.e., a kind of high Co metallurgy nickel alloy of powder, forms, the member by mass percentage
The mass percentage content of plain Nb is preferably 0.75~1.15%, more preferably 0.85~1.05%, more preferably 0.90~
1.00%, most preferably 0.95%；The source of element nb is not particularly limited in the present invention, with well known to those skilled in the art
The source of element nb or commercially available element nb；The purity of element nb is not particularly limited in the present invention, with art technology
The purity of the element nb of high temperature alloy is used to prepare known to personnel.
The present invention improves the threshold value that TCP phases are formed by using 0.75~1.15% element nb instead of element T a,
To reduce precipitation ability of high-temperature alloy material during high temperature is on active service for a long time, materials microstructure stability is improved.
It forms by mass percentage, the mass percentage content of the Elements C o is preferably 25.0~27.0%, more preferably
It is 25.5~26.5%, more preferably 25.7~26.3%, more preferably 25.9~26.1%, most preferably 26%；The present invention
The source of Elements C o is not particularly limited, is with the source of Elements C o well known to those skilled in the art or commercially available Elements C o
It can；The purity of Elements C o is not particularly limited in the present invention, with the high temperature alloy well known to those skilled in the art that is used to prepare
The purity of Elements C o.
The present invention improves solid solution strengthening effect by increasing the content of Elements C o.
It forms by mass percentage, the mass percentage content of the element Hf is preferably 0.17~0.23%, more preferably
It is 0.18~0.22%, more preferably 0.19~0.21%, most preferably 0.20%；The present invention is to the source of element Hf without spy
It does not limit, with the source of element Hf well known to those skilled in the art or commercially available element Hf；The present invention is to element Hf's
Purity is not particularly limited, with the purity of the element Hf well known to those skilled in the art for being used to prepare high temperature alloy.
For the present invention in the high temperature alloy, addition alloying element Hf improves the stability of γ ' phases, and element Hf not only can be into
Enter in γ ', MC and γ phases and improve its stability, can also be combined with oxygen, purifies crystal boundary, and Hf is carbide,
More stable carbide can be formed in powder particle, be the effective way for improving primary granule border (PPB) and being precipitated.
It forms by mass percentage, the mass percentage content of the element al is preferably 3.0~3.4%, more preferably
3.1~3.3%, more preferably 3.13~3.28%, more preferably 3.15~3.25%, most preferably 3.2%；The present invention is to member
The source of plain Al is not particularly limited, with the source of element al well known to those skilled in the art or commercially available element al；
The purity of element al is not particularly limited in the present invention, with the element well known to those skilled in the art for being used to prepare high temperature alloy
The purity of Al.
It forms by mass percentage, the mass percentage content of the element ti is preferably 3.5~3.9%, more preferably
3.55~3.85%, more preferably 3.60~3.80%, more preferably 3.65~3.75%, most preferably 3.7%；The present invention couple
The source of element ti is not particularly limited, and is with the source of element ti well known to those skilled in the art or commercially available element ti
It can；The purity of element ti is not particularly limited in the present invention, with the high temperature alloy well known to those skilled in the art that is used to prepare
The purity of element ti.
It forms by mass percentage, the mass percentage content of the element W is preferably 3.75~4.25%, more preferably
3.85~4.15%, more preferably 3.88~4.13%, more preferably 3.95~4.05%, most preferably 4.0%；The present invention couple
The source of element W is not particularly limited, with the source of element W well known to those skilled in the art or commercially available element W；This
The purity of element W is not particularly limited in invention, with the element W's well known to those skilled in the art for being used to prepare high temperature alloy
Purity.
It forms by mass percentage, the mass percentage content of the elements Mo is preferably 3.75~4.25%, more preferably
It is 3.85~4.15%, more preferably 3.88~4.13%, more preferably 3.95~4.05%, most preferably 4.0%；The present invention
The source of elements Mo is not particularly limited, is with the source of elements Mo well known to those skilled in the art or commercially available elements Mo
It can；The purity of elements Mo is not particularly limited in the present invention, with the high temperature alloy well known to those skilled in the art that is used to prepare
The purity of elements Mo.
It forms by mass percentage, the mass percentage content of the element Cr is preferably 12.5~13.5%, more preferably
It is 12.6~13.4%, more preferably 12.7~13.3%, more preferably 12.8~13.2%, most preferably 13%；The present invention
The source of element Cr is not particularly limited, is with the source of element Cr well known to those skilled in the art or commercially available element Cr
It can；The purity of element Cr is not particularly limited in the present invention, with the high temperature alloy well known to those skilled in the art that is used to prepare
The purity of element Cr.
It forms by mass percentage, the mass percentage content of the Elements C is preferably 0.04~0.06%, more preferably
0.042~0.057%, more preferably 0.045~0.055%, more preferably 0.047~0.053%, most preferably 0.05%；
The source of Elements C is not particularly limited in the present invention, with the source of Elements C well known to those skilled in the art or commercially available element
C；The purity of Elements C is not particularly limited in the present invention, and high temperature alloy is used to prepare with well known to those skilled in the art
Elements C purity.
It forms by mass percentage, the mass percentage content of the element B is preferably 0.003~0.015%, more preferably
It is 0.005~0.012%, more preferably 0.007~0.011%, more preferably 0.008~0.01%, most preferably
0.009%；The source of element B is not particularly limited in the present invention, with the source or city of element B well known to those skilled in the art
The element B sold；The purity of element B is not particularly limited in the present invention, is used to prepare with well known to those skilled in the art
The purity of the element B of high temperature alloy.
It forms by mass percentage, the mass percentage content of the element Zr is preferably 0.03~0.07%, more preferably
It is 0.035~0.065%, more preferably 0.04~0.06%, more preferably 0.045~0.055%, most preferably 0.05%；
The source of element Zr is not particularly limited in the present invention, with the source of element Zr well known to those skilled in the art or commercially available member
Plain Zr；The purity of element Zr is not particularly limited in the present invention, and high temperature is used to prepare with well known to those skilled in the art
The purity of the element Zr of alloy.
The source of element Ni is not particularly limited in the present invention, with the source of element Ni well known to those skilled in the art or
Commercially available element Ni；The purity of element Ni is not particularly limited in the present invention, is used for well known to those skilled in the art
Prepare the purity of the element Ni of high temperature alloy.
The present invention provides a kind of high temperature alloy, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
The content of Co is improved nearly 1 times or so, simultaneously by above-mentioned powder metallurgy high-temperature alloy containing Co provided by the invention
The content of Nb is improved to 0.95wt%, and is added to the Hf of 0.2wt%.After testing, second generation powder metallurgy high-temperature alloy is compared
Rene88, U720Li, FGH96, main hardening constituent γ ' phases to be completely dissolved temperature and percent by volume high, meanwhile, harmful phase
Sigma phases, the Precipitation Temperature raising of μ phases and weight percent content reduce, and thereby increase the high temperature microstructure stability of alloy
And intensity.
The present invention also provides a kind of high temperature alloys, which is characterized in that composition includes by mass percentage：
Surplus is Ni.
The high Co metallurgy high temperatures nickel alloy of the powder provided by the invention, opposite second generation powder metallurgy high-temperature alloy have
Better structure stability and elevated temperature strength, alloy temperature capability are further increased than second generation powder metallurgy high-temperature alloy.
The present invention provides a kind of article, which is characterized in that the article is used for gas-turbine unit, and presses quality percentage
Than composition, including the high temperature alloy formed by following element：
Surplus is Ni.
In article of the present invention, including high temperature alloy in element preferred embodiment and afore-said hot alloy in element
Preferred embodiment is identical, and this is no longer going to repeat them；Article of the present invention is preferred for gas-turbine unit, is more preferably used for
The hot-end component of gas-turbine unit.The model of the gas-turbine unit is not particularly limited in the present invention, with ability
Using the model of high temperature alloy known to field technique personnel；The present invention does not have the other conditions of the gas-turbine unit
There is special limitation, with the normal condition of gas-turbine unit well known to those skilled in the art.
High temperature alloy containing Co of the present invention, as the high-temperature material for gas-turbine unit, especially suitable for closing
The Ni based powder metallurgy high temperature alloy of key hot-end component, and the associated materials and its component that thus manufacture, height of the present invention
Temperature alloy has better structure stability and elevated temperature strength, alloy temperature capability ratio with respect to second generation powder metallurgy high-temperature alloy
Second generation powder metallurgy high-temperature alloy further increases.
The present invention is to further increase the high-temperature mechanics strength and stability of high temperature alloy, additionally provides and is additionally useful for manufacturing
Gas-turbine unit especially manufactures the specific technical solution of crucial hot-end component, including,
The present invention provides a kind of article, which is characterized in that the article is used for gas-turbine unit, and presses quality percentage
Than composition, including the high temperature alloy formed by following element：Co：26%, Cr：13%, Al：3.2%, Ti：3.7%, W：
4.0%, Mo：4.0%, Nb：0.95%, Hf：0.2%, C：0.05%, B：0.009%, Zr：0.05%, surplus Ni.
And the present invention also provides a kind of articles, which is characterized in that the article is used for gas-turbine unit, and presses matter
Percentage composition is measured, including the high temperature alloy formed by following element：Co：25.8%, Cr：13%, Al：3.15%, Ti：
3.65%, W：4.1%, Mo：4.1%, Nb：1.0%, Hf：0.2%, C：0.05%, B：0.009%, Zr：0.05%, surplus is
Ni。
Nickel base superalloy provided by the invention and preparation method thereof, especially a kind of high Co metallurgy nickel-base high-temperature of powder close
Gold, and the gas-turbine unit that thus prepares, the especially crucial hot-end component of gas-turbine unit, for original
Grain boundary is one of three big defects of powder metallurgy high-temperature alloy, and corresponding powder injection molding and structure stability directly determine alloy
High-temperature behavior and component service life the problem of and powder metallurgy high-temperature alloy in typical harmful phase (such as sigma phases, μ phases
Deng) it is that material and component are also easy to produce fatigue crack during long service and lead to one of principal element of failure, it is based on powder
The schedule of reinforcement of metallurgy high temperature alloy is mainly solution strengthening mode and precipitation strength mode.
The present invention usually improves the threshold value that TCP phases are formed using Nb elements instead of Ta members, to reduce high temperature alloy material
Expect precipitation ability during high temperature is on active service for a long time, improves materials microstructure stability.Conjunction can be improved in the content for increasing Co
The solution strengthening ability of gold improves its elevated temperature strength, and the stability of precipitation strength principal element γ ' phases can be improved in addition Hf, from
And improve the high-temperature behavior of alloy.Using advanced alloy design method, solution strengthening, the effect of precipitation strength are given full play to,
Formability, existence range and the content for reducing harmful phase balance each intensified element W, Mo, Nb, Al, Ti containing in the alloy
Amount devises the high Co powder metallurgy high temperature nickel alloy of high Co plus Hf by screening, the experimental results showed that, indices are excellent
In typical second generation powder metallurgy high-temperature alloy.Using the high temperature alloy designed by the present invention, the article of preparation is especially prepared
Gas-turbine unit especially prepares its crucial hot-end component, all has preferable mechanical property and high temperature long service
Structure stability, and preferable alloy temperature capability.
In order to further illustrate the present invention, high Co powder metallurgy high temperature nickel provided by the invention is closed with reference to embodiments
Gold is described in detail.
Embodiment 1
The present invention is not particularly limited its source to raw materials used in embodiment, it is buying on the market or according to
Preparation method well known to those skilled in the art is prepared.
Source of the present invention to the preparation method and other raw materials of high Co powder metallurgy high temperature nickel alloy described in embodiment
It is not particularly limited, is prepared according to preparation method well known to those skilled in the art or buys on the market.
Powder metallurgy high temperature nickel alloy CSU-A1 is prepared according to certain alloying component proportioning in the present invention, and with it is existing
Typical second generation powder metallurgy high-temperature alloy carry out ingredient comparison, comparing result, referring to table 1, table 1 is the embodiment of the present invention
The ingredient of 1 obtained high temperature alloy and second generation typical powder metallurgy high temperature alloy compares.
The ingredient of the high temperature alloy that 1 embodiment 1 of table obtains and second generation typical powder metallurgy high temperature alloy compares
| CSU-A1 | Rene88(DT) | U720Li | FGH96 | |
| Ni | Surplus | Surplus | Surplus | Surplus |
| Co | 26 | 13 | 15 | 13 |
| Cr | 13 | 16 | 16 | 16 |
| Al | 3.2 | 2.1 | 2.5 | 2.2 |
| Ti | 3.7 | 3.7 | 5.0 | 3.7 |
| W | 4.0 | 4.0 | 1.25 | 4.0 |
| Mo | 4.0 | 4.0 | 3.0 | 4.0 |
| Ta | 0 | 0 | 0 | 0.02 |
| Nb | 0.95 | 0.75(0.7) | 0 | 0.8 |
| Hf | 0.2 | 0 | 0 | 0 |
| C | 0.05 | 0.04(0.03) | 0.025 | 0.03 |
| B | 0.009 | 0.02(0.015) | 0.018 | 0.01 |
| Zr | 0.05 | 0.04(0.03) | 0.05 | 0.04 |
As it can be seen from table 1 the alloy CSU-A1 that the present invention designs has compared with second generation powder metallurgy high-temperature alloy
Following characteristics：Compared with Rene88, about 1 times of the mass percent of Elements C o is improved, and increases element Hf；With U720Li phases
Than improving about 1 times of the mass percent of Elements C o, and increase element nb and element Hf；Compared with domestic FGH96, member is improved
About 1 times of the mass percent of plain Co, and increase element Hf.
The high temperature alloy CSU-A1 that the embodiment of the present invention 1 designs is carried out with the typical powder metallurgy high-temperature alloy of the second generation
Performance detection.
Referring to Fig. 1, Fig. 1 is high temperature alloy CSU-A1 and the typical powder metallurgy height of the second generation in the embodiment of the present invention 1
γ ' hardening constituent content balance figure of the temperature alloy at 870 DEG C.
As shown in Figure 1, under 870 DEG C of hot conditions, the high temperature alloy that embodiment 1 designs, γ ' hardening constituents content height
It is suitable with U720Li in Rene88 and FGH96.
Referring to Fig. 2, Fig. 2 is high temperature alloy CSU-A1 and the typical powder metallurgy height of the second generation in the embodiment of the present invention 1
The γ ' of temperature alloy is mutually completely dissolved temperature comparisons' figure.
As shown in Figure 2, the high temperature alloy that embodiment 1 designs, γ ' phase solid solubility temperatures are suitable with U720Li, compare Rene88
About 50 DEG C are improved, about 40 DEG C are improved than FGH96.This shows the High-Temperature Strengthening phase for the high temperature alloy that the present invention designs -- γ ' phases
Stability is substantially better than second generation powder metallurgy high-temperature alloy.
Referring to Fig. 3, Fig. 3 is high temperature alloy CSU-A1 and the typical powder metallurgy height of the second generation in the embodiment of the present invention 1
The beginning Precipitation Temperature of the harmful phase Σ phases of temperature alloy is schemed with temperature comparisons are completely dissolved.
From the figure 3, it may be seen that the high temperature alloy that embodiment 1 designs, the beginning Precipitation Temperature highest of Σ phases are completely dissolved temperature
Quite, Σ phases can form temperature range minimum, this shows high temperature alloy that the present invention designs to inhibiting and controlling the formation of Σ phases
With apparent advantage.
Referring to Fig. 4, Fig. 4 is high temperature alloy CSU-A1 and the typical powder metallurgy height of the second generation in the embodiment of the present invention 1
The maximum molar content comparison diagram of the harmful phase Σ phases of temperature alloy.
As shown in Figure 4, the high temperature alloy that embodiment 1 designs, the total amount that Σ phases can be formed is minimum, this shows the present invention
The high temperature alloy of design has apparent advantage to the formation for inhibiting and controlling Σ phases.
Referring to Fig. 5, Fig. 5 is high temperature alloy CSU-A1 and the typical powder metallurgy height of the second generation in the embodiment of the present invention 1
The difference comparison diagram of the solid-liquid phase line of temperature alloy.
From above-mentioned testing result and explanation as can be seen that the high Co powder metallurgy high temperature nickel that the embodiment of the present invention 1 designs
Alloy compares original two generations powder metallurgy high-temperature alloy, reduces precipitation ability during high temperature is on active service for a long time, carries
High materials microstructure stability.Solution strengthening ability is increased, elevated temperature strength is improved, improves the stability of γ ' phases, to
The high-temperature behavior of alloy is improved, indices are better than typical second generation powder metallurgy high-temperature alloy.
As used herein, the element or step being described with odd number and with word "one" or "an" are interpreted as not
The element or step for excluding plural form are excluded except non-clearly narration is such.In addition, referring to " the single embodiment " of the present invention
It should not be construed as excluding the presence of the other embodiments for also including the feature.
A kind of nickel base superalloy provided by the invention and preparation method thereof is described in detail above, herein
Applying specific case, principle and implementation of the present invention are described, and the explanation of above example is only intended to help
Understand the method and its core concept of the present invention, including best mode, and but also any person skilled in the art can
Enough practice present invention, including any device or system are manufactured and use, and implement the method for any combination.It should be pointed out that for
For those skilled in the art, without departing from the principle of the present invention, if can also be carried out to the present invention
Dry improvement and modification, these improvement and modification are also fallen within the protection scope of the claims of the present invention.Patent protection of the present invention
Range is defined by the claims, and may include those skilled in the art it is conceivable that other embodiment.If these its
He has the structural element for being not different from claim character express at embodiment, or if they include and claim
Equivalent structural elements of the character express without essence difference, then these other embodiments should also be included in the scope of the claims
It is interior.
Claims (23)
1. a kind of high temperature alloy, which is characterized in that group becomes by mass percentage：
Co： 25~27%；
Cr： 12.5~13.5%；
Al： 3.0~3.4%；
Ti： 3.5~3.9%；
W： 3.75~4.25%；
Mo：3.75~4.25%；
Nb： 0.75~1.15%；
Hf： 0.17~0.23%；
C：0.04~0.06%；
B：0.003~0.015%；
Zr：0.03~0.07%；
Surplus is Ni.
2. high temperature alloy according to claim 1, which is characterized in that including 25.5 ~ 26.5% Co.
3. high temperature alloy according to claim 1, which is characterized in that including 12.7 ~ 13.3% Cr.
4. high temperature alloy according to claim 1, which is characterized in that including 3.1 ~ 3.3% Al.
5. high temperature alloy according to claim 1, which is characterized in that including 3.6 ~ 3.8% Ti.
6. high temperature alloy according to claim 1, which is characterized in that including 3.85 ~ 4.15% W.
7. high temperature alloy according to claim 1, which is characterized in that including 3.85 ~ 4.15% Mo.
8. high temperature alloy according to claim 1, which is characterized in that including 0.85 ~ 1.05% Nb.
9. a kind of high temperature alloy, which is characterized in that group becomes by mass percentage：
Co： 26%；
Cr： 13%；
Al： 3.2%；
Ti： 3.7%；
W： 4.0%；
Mo：4.0%；
Nb： 0.95%；
Hf： 0.2%；
C：0.05%；
B：0.009%；
Zr：0.05%；
Surplus is Ni.
10. a kind of high temperature alloy, which is characterized in that group becomes by mass percentage：
Co： 25.8%；
Cr： 13%；
Al： 3.15%；
Ti： 3.65%；
W： 4.1%；
Mo：4.1%；
Nb： 1.0%；
Hf： 0.2%；
C：0.05%；
B：0.009%；
Zr：0.05%；
Surplus is Ni.
11. a kind of metal product, which is characterized in that the metal product is used for gas-turbine unit, and by mass percentage
Composition, including the high temperature alloy formed by following element：
Co： 25~27%；
Cr： 12.5~13.5%；
Al： 3.0~3.4%；
Ti： 3.5~3.9%；
W： 3.75~4.25%；
Mo：3.75~4.25%；
Nb： 0.75~1.15%；
Hf： 0.17~0.23%；
C：0.04~0.06%；
B：0.003~0.015%；
Zr：0.03~0.07%；
Surplus is Ni.
12. metal product according to claim 11, which is characterized in that including 25.5 ~ 26.5% Co.
13. metal product according to claim 11, which is characterized in that including 12.7 ~ 13.3% Cr.
14. metal product according to claim 11, which is characterized in that including 3.1 ~ 3.3% Al.
15. metal product according to claim 11, which is characterized in that including 3.6 ~ 3.8% Ti.
16. metal product according to claim 11, which is characterized in that including 3.85 ~ 4.15% W.
17. metal product according to claim 11, which is characterized in that including 3.85 ~ 4.15% Mo.
18. metal product according to claim 11, which is characterized in that including 0.85 ~ 1.05% Nb.
19. metal product according to claim 11, which is characterized in that the metal product is used for gas-turbine unit
Hot-end component.
20. a kind of metal product, which is characterized in that the metal product is used for gas-turbine unit, and by mass percentage
Composition, including the high temperature alloy formed by following element：
Co： 26%；
Cr： 13%；
Al： 3.2%；
Ti： 3.7%；
W： 4.0%；
Mo：4.0%；
Nb： 0.95%；
Hf： 0.2%；
C：0.05%；
B：0.009%；
Zr：0.05%；
Surplus is Ni.
21. metal product according to claim 20, which is characterized in that the metal product is used for gas-turbine unit
Hot-end component.
22. a kind of metal product, which is characterized in that the metal product is used for gas-turbine unit, and by mass percentage
Composition, including the high temperature alloy formed by following element：
Co： 25.8%；
Cr： 13%；
Al： 3.15%；
Ti： 3.65%；
W： 4.1%；
Mo：4.1%；
Nb： 1.0%；
Hf： 0.2%；
C：0.05%；
B：0.009%；
Zr：0.05%；
Surplus is Ni.
23. metal product according to claim 22, which is characterized in that the metal product is used for gas-turbine unit
Hot-end component.
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| EP0194391A1 (en) * | 1985-03-13 | 1986-09-17 | General Electric Company | Yttrium and yttrium-silicon bearing nickel-base superalloys especially useful as compatible coatings for advanced superalloys |
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
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| US6454885B1 (en) * | 2000-12-15 | 2002-09-24 | Rolls-Royce Corporation | Nickel diffusion braze alloy and method for repair of superalloys |
| JP6267890B2 (en) * | 2013-08-07 | 2018-01-24 | 三菱日立パワーシステムズ株式会社 | Ni-base cast superalloy and casting made of the Ni-base cast superalloy |
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| EP0194391A1 (en) * | 1985-03-13 | 1986-09-17 | General Electric Company | Yttrium and yttrium-silicon bearing nickel-base superalloys especially useful as compatible coatings for advanced superalloys |
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
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