CN104745888A - Nickel-base alloy and article formed by same - Google Patents
Nickel-base alloy and article formed by same Download PDFInfo
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- CN104745888A CN104745888A CN201510187146.6A CN201510187146A CN104745888A CN 104745888 A CN104745888 A CN 104745888A CN 201510187146 A CN201510187146 A CN 201510187146A CN 104745888 A CN104745888 A CN 104745888A
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Abstract
The invention provides a nickel-base alloy comprising the following components in percentage by weight: 7-8% of cobalt, 6.75-7.25% of chromium, 6.25-6.55% of aluminum, 6.3-6.7% of tantalum, 5.25-6.75% of tungsten, 0.3-0.7% of molybdenum, 0.12-0.18% of hafnium, 2.35-2.75% of rhenium, 0.04-0.06% of carbon, 0.003-0.005% of born and the balance of nickel. By balancing the contents of strengthening elements of W, Mo, Ta, Al, Co and the like in the alloy, reducing the content of W, increasing the content of Al and adding Re, the nickel-base alloy is relatively low in density and relatively good in comprehensive performance.
Description
Technical field
The present invention relates to technical field of alloy, particularly relate to nickel-base alloy and the article formed by alloy.
Background technology
Nickel base superalloy take nickel as the superalloy that matrix has higher intensity and good anti-oxidant, resistance to combustion gas corrosion ability within the scope of 650 DEG C ~ 1000 DEG C.Nickel base superalloy starts development the later stage thirties.Along with constantly increasing of nickel base superalloy application of temperature, and then require to develop different nickel base superalloys.
Nickel base superalloy is the critical material manufacturing gas turbine engine hot passage parts, and at present, what be representative with CMSX-2, CMSX-3, DD3 is mainly used in low-pressure turbine without Re superalloy and requires on not too high partial high pressure turbine.Along with the raising of turbine intake temperature, the main flow direction becoming high-pressure turbine application containing Re superalloy being representative with CMSX-4, Ren é N5, DD6.But this type of alloy exists the problems such as density is large, cost is high, castability is poor, and the domestic systematic study also not having low density to contain Re superalloy at present.CMSX-4, Ren é N5 and DD6 be study both at home and abroad comparative maturity containing Re superalloy, shown in it is composed as follows:
CMSX-4 nickel base superalloy comprises: the Ti of Mo, 1.0wt% of Re, 0.6wt% of B, 3.0wt% of C, 0.004wt% of Hf, 0.05wt% of W, 0.10wt% of Ta, 6.0wt% of Al, 6.5wt% of Cr, 5.6wt% of Co, 6.5wt% of 9.0wt% and the Ni of surplus.
N5 nickel base superalloy comprises: the Mo of Re, 1.50wt% of B, 3.0wt% of C, 0.004wt% of Hf, 0.05wt% of W, 0.15wt% of Ta, 5.0wt% of Al, 7.0wt% of Cr, 6.2wt% of Co, 7.0wt% of 7.5wt% and the Ni of surplus.
DD6 nickel base superalloy comprises: the Mo of Re, 2.00wt% of B, 2.0wt% of C, 0.004wt% of Nb, 0.05wt% of Hf, 0.5wt% of W, 0.10wt% of Ta, 8.0wt% of Al, 7.5wt% of Cr, 5.6wt% of Co, 4.3wt% of 9.0wt% and the Ni of surplus.
Because the density of above-mentioned nickel base superalloy is higher, and add the cost of above-mentioned nickel base superalloy, and limit its application.
Summary of the invention
The technical problem that the present invention solves is the manufacture article providing a kind of nickel-base alloy and formed thus, and the rhenium-containing nickel base superalloy of the application has lower density.
In view of this, this application provides a kind of nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Preferably, the chromium of 6.9wt% ~ 7.1wt% is comprised.
Preferably, the tantalum of 6.45wt% ~ 6.6wt% is comprised.
Preferably, the rhenium of 2.4wt% ~ 2.6wt% is comprised.
Preferably, the hafnium of 0.13wt% ~ 0.16wt% is comprised.
Preferably, the molybdenum of 0.45wt% ~ 0.6wt% is comprised.
Preferably, the aluminium of 6.3wt% ~ 6.5wt% is comprised.
Present invention also provides a kind of nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 5.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Preferably, the chromium of 6.9wt% ~ 7.1wt% is comprised.
Preferably, the tantalum of 6.45wt% ~ 6.6wt% is comprised.
Preferably, the rhenium of 2.4wt% ~ 2.6wt% is comprised.
Preferably, the hafnium of 0.13wt% ~ 0.16wt% is comprised.
Preferably, the molybdenum of 0.45wt% ~ 0.6wt% is comprised.
Preferably, the aluminium of 6.3wt% ~ 6.5wt% is comprised.
Preferably, the tungsten of 5.4wt% ~ 5.6wt% is comprised.
Present invention also provides a kind of nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 6.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Preferably, the chromium of 6.9wt% ~ 7.1wt% is comprised.
Preferably, the tantalum of 6.45wt% ~ 6.6wt% is comprised.
Preferably, the rhenium of 2.4wt% ~ 2.6wt% is comprised.
Preferably, the hafnium of 0.13wt% ~ 0.16wt% is comprised.
Preferably, the molybdenum of 0.45wt% ~ 0.6wt% is comprised.
Preferably, the aluminium of 6.3wt% ~ 6.5wt% is comprised.
Preferably, the tungsten of 6.3wt% ~ 6.6wt% is comprised.
This application provides a kind of nickel-base alloy, comprising:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 5.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
Present invention also provides a kind of nickel-base alloy, comprising:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 6.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
Present invention also provides a kind of manufacture article, described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Present invention also provides a kind of manufacture article, described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 5.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Present invention also provides a kind of manufacture article, described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 6.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Present invention also provides a kind of manufacture article, described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 5.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
Present invention also provides a kind of manufacture article, described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 6.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
This application provides a kind of nickel-base alloy, comprising: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 5.25wt% ~ 6.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
Present invention also provides a kind of nickel-base alloy, comprising: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 5.25wt% ~ 5.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
Present invention also provides a kind of nickel-base alloy, comprising: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 6.25wt% ~ 6.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.Containing Re in the nickel-base alloy that this application provides, and by raising the content of tungsten, reducing the content of aluminium, reducing the content of tantalum, the content raising niobium reduces the density of nickel base superalloy, and ensure that the mechanical property of alloy.
Accompanying drawing explanation
Fig. 1 is the graphic representation of constituent content alloy Effects of Density;
Fig. 2 is the graphic representation of constituent content alloy strengthening phase γ ' content influence;
Fig. 3 is the graphic representation of the complete solvent temperature impact of constituent content alloy strengthening phase γ ';
Fig. 4 is the graphic representation of constituent content alloy heat treatment window impact;
Fig. 5 is the density of the nickel-base alloy of the embodiment of the present invention and the contrast column diagram of prior art nickel-base alloy density;
Fig. 6 is the nickel-base alloy initial melting temperature of the embodiment of the present invention and the contrast column diagram of prior art nickel base superalloy initial melting temperature;
Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the embodiment of the present invention;
Fig. 8 is the interval size in nickel-base alloy mushy zone of the embodiment of the present invention and the contrast column diagram of prior art nickel base superalloy;
Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the embodiment of the present invention and the contrast column diagram of prior art nickel base superalloy.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
Nickel base superalloy comprises three kinds of basic strengthening means, i.e. solution strengthening, precipitation hardened and grain-boundary strengthening.Wherein Co, Cr, Mo and elements such as w have solution strengthening effect, and the element such as Al, Ti, Nb and Ta has precipitation hardened effect, and the elements such as C, B and Zr have the effects such as grain-boundary strengthening.The application is by the composition of appropriate design alloy, the strengthening effect of the best that alloy is reached, and make the nickel base superalloy of the application have higher warm ability of holding, antioxidant property and hot corrosion resistance excellent, also there is good structure stability and castability.
Co and Ni can form continuous substitutional solid solution and become (Ni, Co)
3(Al, Ti), strengthening γ ' phase, thus put forward heavy alloyed high-temperature behavior.High Co content can make alloy have high intensity and creep-resistant property, and improves γ ' phase solid solubility temperature, improves the handiness of thermal treatment process, reduces the generation of thermal induction hole as far as possible; But then there is the Ni of HCP-D024 structure in Co too high levels
3ti phase, the existence of this phase can make strength degradation, Ni
3ti phase itself is without sclerization and will consume a part of γ ' phase.Through adjustment, the content of cobalt described in the application is 7wt% ~ 8wt%.In another embodiment, the content of described cobalt is preferably 7.2wt% ~ 7.8wt%.
Cr mainly increases anti-oxidant and anti-corrosion capability in nickel base superalloy.Cr and Ni forms the limit solid solution with certain solubility, and main solution strengthening γ matrix, low-alloyed hot strength falls in too much Cr, and under high temperature, Cr easily forms harmful phase σ phase.In one embodiment, the content of described chromium is 6.75wt% ~ 7.25wt%, and in another embodiment, the content of described chromium is 6.9wt% ~ 7.1wt%.
W is solution strengthening element important in Ni-base P/M Superalloy, and it has larger solid solubility in γ matrix phase, the lattice constant and Young's modulus that cause γ phase is had large change, plays strengthening effect to sosoloid.But too high W can promote that TCP phase is formed.The content of tungsten described in the application is 5.25wt% ~ 6.75wt%, and in a specific embodiment, the content of described tungsten is 5.3wt% ~ 6.6wt%, and in an embodiment, the content of described tungsten is 5.45wt% ~ 5.55wt%.
Al is the alloying element had the greatest impact mutually to γ ', and its γ ' is Ni mutually
3al.In a specific embodiment, the content of described Al is 6.25wt% ~ 6.55wt%.In a specific embodiment, the content of described Al is 6.30wt% ~ 6.50wt%.In a specific embodiment, the content of described Al is 6.35wt% ~ 6.45wt%.
Because the atomic radius of Ta is comparatively large, therefore adds the lattice constant that obviously can increase γ ' phase in alloy, improve the strengthening effect of γ ' phase.Add Ta, neither affect alloy plasticity, also can put forward heavy alloyed creep strength, the most important thing is the dwell time crack growth rate that obviously can reduce by 704 DEG C.The content of tantalum described in the application is 6.3wt% ~ 6.7wt%, and in a specific embodiment, the content of described tantalum is 6.45wt% ~ 6.6wt%.
Mo is solution strengthening element important in Ni-base P/M Superalloy, and it has larger solid solubility in γ matrix phase, the lattice constant and Young's modulus that cause γ phase is had large change, plays strengthening effect to sosoloid.But too high Mo can promote that TCP phase is formed.In a specific embodiment, the content of described Mo is 0.3wt% ~ 0.7wt%, and in a specific embodiment, the content of described Mo is 0.45wt% ~ 0.6wt%.
In the application, the content of Hf is 0.12wt% ~ 0.18wt%, and in a specific embodiment, the content of described Hf is 0.13wt% ~ 0.16wt%, and in a specific embodiment, the content of described Hf is 0.14wt% ~ 0.15wt%.
These crystal boundary trace element segregations of C and B can improve intergranular bonding force to grain boundaries, strengthening crystal boundary, thus carry heavy alloyed creep strength, plasticity and low all cycle fatigue lifes.But when these elements add excessive, then promote the precipitation of carbon (boron) compound, the above-mentioned performance of alloy is not further enhanced.The content of carbon described in the application is 0.04wt% ~ 0.06wt%, and the content of described boron is 0.003wt% ~ 0.005wt%.
Present invention also provides a specific embodiments, described nickel-base alloy comprises: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 5.25wt% ~ 5.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
For this kind of nickel-base alloy, wherein the preferable range of alloying element is identical with the preferable range of the alloying element of above-mentioned nickel-base alloy, and just in a specific embodiment, the content of W is 5.4wt% ~ 5.6wt% to the content of W.
Present invention also provides a specific embodiments, described nickel-base alloy comprises: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 6.25wt% ~ 6.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
For this kind of nickel-base alloy, wherein the preferable range of alloying element is identical with the preferable range of the alloying element of above-mentioned nickel-base alloy, and just in a specific embodiment, the content of W is 6.3wt% ~ 6.6wt% to the content of W.
Present invention also provides a kind of nickel-base alloy, comprising: the cobalt of 7.5wt%; The chromium of 7.0wt%; The aluminium of 6.4wt%; The tantalum of 6.5wt%; The tungsten of 5.5wt%; The molybdenum of 0.5wt%; The hafnium of 0.15wt%; The rhenium of 2.6wt%; The carbon of 0.05wt%; The boron of 0.004wt%; The nickel of surplus.
Present invention also provides a kind of nickel-base alloy, comprising: the cobalt of 7.5wt%; The chromium of 7.0wt%; The aluminium of 6.4wt%; The tantalum of 6.5wt%; The tungsten of 6.5wt%; The molybdenum of 0.5wt%; The hafnium of 0.15wt%; The rhenium of 2.6wt%; The carbon of 0.05wt%; The boron of 0.004wt%; The nickel of surplus.
The application is mainly through reducing the content of W, and the content raising Al falls low-alloyed density, to ensure the mechanical property of alloy.As shown in Figure 1, Fig. 1 is the graphic representation of constituent content alloy Effects of Density, and according to Fig. 1, raise Al content, reduce W content, the density of alloy significantly reduces.As shown in Figure 2,3, 4, Fig. 2 is the graphic representation of constituent content alloy strengthening phase γ ' content influence, Fig. 3 is the graphic representation of the complete solvent temperature impact of constituent content alloy strengthening phase γ ', Fig. 4 is the graphic representation of constituent content alloy heat treatment window impact, according to Fig. 2,3,4, raise Al content, reduce W content, strengthening phase γ ' content raises, and thermostability raises, heat treatment window size has and reduces a little, reduce W content, raise Al content, strengthening phase γ ' content raises, thermostability reduces a little, and heat treatment window size becomes large.
Nickel-base alloy described in the application is obtained by the mode of casting, and namely preparation has the Nickel base alloy cast ingot of said components, and the preparation method of described Nickel base alloy cast ingot carries out according to mode well known to those skilled in the art.
Nickel base superalloy can be processed into gas turbine engine rotating paddle (movable vane), non-rotating blade (stator blade), prepare turbine components by multiple diverse ways, such as powder metallurgic method (powder process, hot isostatic pressing, isothermal forging etc.), ingot casting be directional freeze, investment cast, ingot casting thermo-mechanical processi, near-net-shape casting, chemical vapour deposition, physical vapor deposition etc. subsequently subsequently.The article that the application is manufactured by nickel-base alloy preferably adopt ingot casting, subsequently directional freeze and investment cast.In castingprocesses, the metal of melting is poured in mould, to manufacture required shape.Usually with the parts that investment cast manufacture can not be manufactured by usual manufacture method, as having the turbine blade of complicated shape.The manufacture method of mould is the other materials modeling adopting wax maybe can melt, and immerses refractory mortar, be dried by wax pattern, and repeats to immerse slurry neutralization this process dry, until reach firm thickness; Afterwards, whole model is put into baking oven, and wax is melted.This generates the mould can filled with the nickel-base alloy of melting.Before casting, by mould preheating to remove remaining wax, and tackiness agent is hardened; Preferred scheme is cast in a vacuum, through different thermal treatment after casting, makes intensity best and improve creep-resistant property.
According to embodiment of the present invention, the generation type of nickel-base alloy described in the application is for manufacturing article, and described article can be applicable to gas engine assembly, are applied to gas engine hot passage parts particularly.The nickel-base alloy of the article manufactured described in the application comprises: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 5.25wt% ~ 6.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
According to another embodiment of the application, wherein form of the present invention is a kind of article of manufacture, and described nickel-base alloy comprises: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 5.25wt% ~ 5.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
According to another embodiment of the application, wherein form of the present invention is a kind of article of manufacture, and described nickel-base alloy comprises: the cobalt of 7wt% ~ 8wt%; The chromium of 6.75wt% ~ 7.25wt%; The aluminium of 6.25wt% ~ 6.55wt%; The tantalum of 6.3wt% ~ 6.7wt%; The tungsten of 6.25wt% ~ 6.75wt%; The molybdenum of 0.3wt% ~ 0.7wt%; The hafnium of 0.12wt% ~ 0.18wt%; The rhenium of 2.35wt% ~ 2.75wt%; The carbon of 0.04wt% ~ 0.06wt%; The boron of 0.003wt% ~ 0.005wt%; The nickel of surplus.
According to another embodiment of the application, wherein form of the present invention is a kind of article of manufacture, and described nickel-base alloy comprises: the cobalt of 7.5wt%; The chromium of 7.0wt%; The aluminium of 6.4wt%; The tantalum of 6.5wt%; The tungsten of 5.5wt%; The molybdenum of 0.5wt%; The hafnium of 0.15wt%; The rhenium of 2.6wt%; The carbon of 0.05wt%; The boron of 0.004wt%; The nickel of surplus.
According to another embodiment of the application, wherein form of the present invention is a kind of article of manufacture, and described nickel-base alloy comprises: the cobalt of 7.5wt%; The chromium of 7.0wt%; The aluminium of 6.4wt%; The tantalum of 6.5wt%; The tungsten of 6.5wt%; The molybdenum of 0.5wt%; The hafnium of 0.15wt%; The rhenium of 2.6wt%; The carbon of 0.05wt%; The boron of 0.004wt%; The nickel of surplus.
The above-mentioned manufacture article of the application are formed by the method for casting, said method comprising the steps of: (1) preparation has the ingot casting of said components; (2) remelting ingot casting cast the article becoming and there is specified shape and size; (3) suitable thermal treatment process is adopted to heat-treat described article.
Containing Re in the nickel base superalloy that the application provides, relatively improved by the content of Al, the content of W reduces, the density of alloy is reduced, and ensure that the mechanical property of alloy, and by adjusting the content of alloying element, density is low, cost is low, heterogeneous microstructure stability, mechanical property and processing characteristics excellent to make nickel-base alloy have.Experimental result shows, the density ratio existing rhenium-containing nickel-base alloy of the nickel base superalloy that the application provides is all low.
In order to understand the present invention further, be described in detail to nickel base superalloy provided by the invention below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 1.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
Embodiment 2
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 2.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
Embodiment 3
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 3.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
Embodiment 4
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 4.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
Embodiment 5
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 5.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
Embodiment 6
Prepare nickel base superalloy ingot casting, its composition is as shown in table 1, and the Nickel base alloy cast ingot of the present embodiment counts alloy 6.The nickel-base alloy performance of nickel-base alloy the present embodiment provided and prior art contrasts, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; The nickel-base alloy of prior art is also obtained by the mode of casting.Fig. 5 is that the nickel-base alloy density of the present embodiment and prior art nickel-base alloy density contrast column diagram; Fig. 6 is the nickel-base alloy initial melting temperature of the present embodiment and the contrast column diagram of prior art nickel base superalloy initial melting temperature; Fig. 7 is the solid solubility temperature of strengthening phase γ ＇ and the contrast column diagram of prior art nickel base superalloy in the nickel-base alloy of the present embodiment; Fig. 8 is the interval size in nickel-base alloy mushy zone of the present embodiment and the contrast column diagram of prior art nickel base superalloy; Fig. 9 is the most high-content of the nickel-base alloy strengthening phase γ ＇ of the present embodiment and the contrast column diagram of prior art nickel base superalloy.
According to Fig. 5, density and the existing nickel base superalloy of nickel-base alloy of the present invention are all low; According to Fig. 6, the initial melting temperature of alloy 2 is all higher containing Re superalloy than both domestic and external; Alloy 5 is suitable with DD6, higher than CMSX-4; Alloy 1 is suitable with N5, and high alloy initial melting temperature can make the sufficient solution heat treatment of alloy thus obtain high creep strength; According to Fig. 7, in all alloys, the thermostability of strengthening phase γ ' is all high than N5 and CMSX-4; According to Fig. 8, alloy 2,5 is suitable with DD6, and mushy zone is more little is more conducive to single crystal growing; According to Fig. 9, in alloy, the most high-content of strengthening phase γ ' is all than DD6, and CMSX-4 wants high.
Embodiment 7
A kind of nickel base superalloy ingot casting, its composition is as shown in table 1.
Embodiment 8
A kind of nickel base superalloy ingot casting, its composition is as shown in table 1.
Embodiment 9
A kind of nickel base superalloy ingot casting, its composition is as shown in table 1.
The compositional data table of table 1 embodiment 1 ~ 9 Nickel base alloy cast ingot
| Group | Ni | Co | Cr | Al | Ta | W | Mo | Hf | Re | C | B |
| Embodiment 1 | Surplus | 7.5 | 7.00 | 6.40 | 6.50 | 5.50 | 0.50 | 0.15 | 2.60 | 0.05 | 0.004 |
| Embodiment 2 | Surplus | 7 | 6.75 | 6.25 | 6.30 | 5.25 | 0.30 | 0.12 | 2.35 | 0.04 | 0.003 |
| Embodiment 3 | Surplus | 8 | 7.25 | 6.55 | 6.70 | 5.75 | 0.70 | 0.18 | 2.75 | 0.06 | 0.005 |
| Embodiment 4 | Surplus | 7.5 | 7.00 | 6.40 | 6.50 | 6.50 | 0.50 | 0.15 | 2.60 | 0.05 | 0.004 |
| Embodiment 5 | Surplus | 7 | 6.75 | 6.25 | 6.30 | 6.25 | 0.30 | 0.12 | 2.35 | 0.04 | 0.003 |
| Embodiment 6 | Surplus | 8 | 7.25 | 6.55 | 6.70 | 6.75 | 0.70 | 0.18 | 2.75 | 0.06 | 0.005 |
| Embodiment 7 | Surplus | 7.2 | 6.9 | 6.3 | 6.40 | 5.3 | 0.45 | 0.13 | 2.4 | 0.05 | 0.003 |
| Embodiment 8 | Surplus | 7.4 | 7.1 | 6.5 | 6.60 | 5.65 | 0.60 | 0.16 | 2.6 | 0.06 | 0.004 |
| Embodiment 9 | Surplus | 7.6 | 6.85 | 6.45 | 6.65 | 6.65 | 0.55 | 0.14 | 2.5 | 0.06 | 0.005 |
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (30)
1. a nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
2. nickel-base alloy according to claim 1, is characterized in that, comprises the chromium of 6.9wt% ~ 7.1wt%.
3. nickel-base alloy according to claim 1, is characterized in that, comprises the tantalum of 6.45wt% ~ 6.6wt%.
4. nickel-base alloy according to claim 1, is characterized in that, comprises the rhenium of 2.4wt% ~ 2.6wt%.
5. nickel-base alloy according to claim 1, is characterized in that, comprises the hafnium of 0.13wt% ~ 0.16wt%.
6. nickel-base alloy according to claim 1, is characterized in that, comprises the molybdenum of 0.45wt% ~ 0.6wt%.
7. nickel-base alloy according to claim 1, is characterized in that, comprises the aluminium of 6.3wt% ~ 6.5wt%.
8. a nickel-base alloy, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 5.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
9. nickel-base alloy according to claim 8, is characterized in that, comprises the chromium of 6.9wt% ~ 7.1wt%.
10. nickel-base alloy according to claim 8, is characterized in that, comprises the tantalum of 6.45wt% ~ 6.6wt%.
11. nickel-base alloys according to claim 8, is characterized in that, comprise the rhenium of 2.4wt% ~ 2.6wt%.
12. nickel-base alloys according to claim 8, is characterized in that, comprise the hafnium of 0.13wt% ~ 0.16wt%.
13. nickel-base alloys according to claim 8, is characterized in that, comprise the molybdenum of 0.45wt% ~ 0.6wt%.
14. nickel-base alloys according to claim 8, is characterized in that, comprise the aluminium of 6.3wt% ~ 6.5wt%.
15. nickel-base alloys according to claim 8, is characterized in that, comprise the tungsten of 5.4wt% ~ 5.6wt%.
16. 1 kinds of nickel-base alloys, comprising:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 6.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
17. nickel-base alloys according to claim 16, is characterized in that, comprise the chromium of 6.9wt% ~ 7.1wt%.
18. nickel-base alloys according to claim 16, is characterized in that, comprise the tantalum of 6.45wt% ~ 6.6wt%.
19. nickel-base alloys according to claim 16, is characterized in that, comprise the rhenium of 2.4wt% ~ 2.6wt%.
20. nickel-base alloys according to claim 16, is characterized in that, comprise the hafnium of 0.13wt% ~ 0.16wt%.
21. nickel-base alloys according to claim 16, is characterized in that, comprise the molybdenum of 0.45wt% ~ 0.6wt%.
22. nickel-base alloys according to claim 16, is characterized in that, comprise the aluminium of 6.3wt% ~ 6.5wt%.
23. nickel-base alloys according to claim 16, is characterized in that, comprise the tungsten of 6.3wt% ~ 6.6wt%.
24. 1 kinds of nickel-base alloys, comprising:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 5.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
25. 1 kinds of nickel-base alloys, comprising:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 6.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
26. 1 kinds manufacture article, and described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
27. 1 kinds manufacture article, and described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 5.25wt% ~ 5.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
28. 1 kinds manufacture article, and described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7wt% ~ 8wt%;
The chromium of 6.75wt% ~ 7.25wt%;
The aluminium of 6.25wt% ~ 6.55wt%;
The tantalum of 6.3wt% ~ 6.7wt%;
The tungsten of 6.25wt% ~ 6.75wt%;
The molybdenum of 0.3wt% ~ 0.7wt%;
The hafnium of 0.12wt% ~ 0.18wt%;
The rhenium of 2.35wt% ~ 2.75wt%;
The carbon of 0.04wt% ~ 0.06wt%;
The boron of 0.003wt% ~ 0.005wt%;
The nickel of surplus.
29. 1 kinds manufacture article, and described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 5.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
30. 1 kinds manufacture article, and described article are applied to gas engine hot passage parts, are formed by the alloy comprising following element:
The cobalt of 7.5wt%;
The chromium of 7.0wt%;
The aluminium of 6.4wt%;
The tantalum of 6.5wt%;
The tungsten of 6.5wt%;
The molybdenum of 0.5wt%;
The hafnium of 0.15wt%;
The rhenium of 2.6wt%;
The carbon of 0.05wt%;
The boron of 0.004wt%;
The nickel of surplus.
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| CN201510187146.6A CN104745888A (en) | 2015-04-20 | 2015-04-20 | Nickel-base alloy and article formed by same |
| CN201510296008.1A CN106191530B (en) | 2015-04-20 | 2015-06-02 | Nickel-base alloy and the article formed by alloy |
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| CN107429581A (en) * | 2015-03-17 | 2017-12-01 | 卡特彼勒公司 | Monocrystalline engine valve |
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| DE3571149D1 (en) * | 1985-03-13 | 1989-07-27 | Gen Electric | Yttrium and yttrium-silicon bearing nickel-base superalloys especially useful as compatible coatings for advanced superalloys |
| US6454885B1 (en) * | 2000-12-15 | 2002-09-24 | Rolls-Royce Corporation | Nickel diffusion braze alloy and method for repair of superalloys |
| JP3753143B2 (en) * | 2003-03-24 | 2006-03-08 | 大同特殊鋼株式会社 | Ni-based super heat-resistant cast alloy and turbine wheel using the same |
| JP5467306B2 (en) * | 2008-06-26 | 2014-04-09 | 独立行政法人物質・材料研究機構 | Ni-based single crystal superalloy and alloy member based thereon |
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| CN107429581A (en) * | 2015-03-17 | 2017-12-01 | 卡特彼勒公司 | Monocrystalline engine valve |
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