CN104630565B - High-strength and high-plasticity Ni-Cr-Co based turbine disc blade material and preparation method thereof - Google Patents
High-strength and high-plasticity Ni-Cr-Co based turbine disc blade material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-strength and high-plasticity Ni-Cr-Co based turbine disc blade material and a preparation method thereof. The turbine disc blade material comprises the following components in percentage by weight: 15.50-19.50% of Cr, 18.0-21.0% of Co, 2.5-3.4% of Ti, 1.3-2.0% of Al, not larger than 0.15% of Zr, not larger than 0.02% of B, not larger than 1.0% of Mn, 0.05-0.07% of C, not larger than 0.004% of P, not larger than 0.004% of S, not larger than 1.0% of Si, not larger than 2.0% of Fe, not larger than 0.2% of Cu, not larger than 0.015% of impurities and the balance of nickel. The material provided by the invention has good high temperature properties, and can meet the requirements of high strength and high plasticity at room temperature and good machining properties.
Description
Technical field
The present invention relates to Material Field, more particularly to a kind of high-strength high-plasticity Ni-Cr-Co base turbine disk blade materials and
Preparation method.
Background technology
Modern industry flourish, energy-conservation and environmental protection gradually brought into schedule.At present petroleum system is in order to improve economy
Catalytic cracking unit high-temperature flue gas out are all adopted flue-gas expander electricity generation system by the requirement of benefit and adaptation Environmental Safety
Carry out UTILIZATION OF VESIDUAL HEAT IN.Flue gas turbine expander (calling cigarette machine in the following text) is the important device of the industrial department cogeneration such as oil plant, the turbine disk, leaf
Piece is even more the critical component of cigarette machine.
The huge heat that contains in the high-temperature flue gas that oil plant oil refining is produced, is generally used in generating, cigarette machine be for
Device for generating power by waste heat, due to use condition very severe, and hot conditionss also can accelerated material failure damage.Contain in flue gas
There are the impurity elements such as substantial amounts of S, C, be easy under the high temperature conditions and the O in air2、H2O etc. reacts, and generates SO2、
SO3、H2S, CO etc. harmful gaseous product.Under hot conditionss, corrosive gas flow at high speed easily causes oxidation, the sulfur of material
Change and heat erosion, so as to reduce the service life of material.Once cigarette machine is destroyed, caused property and personal damage is difficult
With what is estimated, so should very with caution, for the material of cigarette machine material for the selection of cigarette machine material, it is desirable to higher strong
Degree and certain toughness, while with high thermostability and corrosion resistance.
With the progress of science and technology, in the past as civilian flue gas turbine expander and Gas Turbine disk and blade, it has been difficult to full
Sufficient current generation development need.At present, domestic flue gas turbine expander turbine disk diameter does bigger and bigger, and the diskware for having prepared is diameter of up to
1250mm, however, the blade matched with it is not usually because intensity is high, toughness plasticity is bad, and causes leaf destruction.
According to statistics, annual China's flue gas turbine expander turbine disk and blade material and the every annual requirement of element are 2000~3000
Ton, and the current lumber recovery of China only 20% is less than while the life and reliability of blade is unstable.Cause petrochemical industry
Industry flue gas turbine expander turbine disk blade relies in a large number import, and domestic market occupancy volume is very little.
The content of the invention
The mesh of the present invention is to provide a kind of high-strength high-plasticity Ni-Cr-Co base turbine disk blade materials and preparation method, institute
State material and there is good high-temperature behavior, the good requirement of room temperature high-strength high-plasticity, machining property can be met.
Technical scheme is as follows：
The material of high-strength high-plasticity Ni-Cr-Co base turbine disk blades, the percentage by weight of its each component is：Cr：
15.50~19.50%；Co：18.0~21.0%；Ti：3.1~3.4%；Al：1.3~2.0%；Zr≤0.15；B≤
0.02%；Mn≤1.0%；C：0.05~0.07%；P≤0.004%；S≤0.004%, Si≤1.0%；Fe≤2.0%；Cu
≤ 0.2%；Impurity≤0.015%；Balance of nickel.
The preferable technical scheme of material of the present invention is that the percentage by weight of each component is：C：0.05~0.07%,
Co:19~21%, Cr:16~18%, Ti:3.1~3.4%, Al:1.3~1.5%, Zr≤0.08, Mn≤0.20, B≤
0.009, P≤0.004%；S≤0.004%, Si≤1.0%；Fe≤2.0%；Cu≤0.2%；Impurity≤0.015%；Surplus
For nickel.
The impurity is Pb, As, Sb, Sn, Zn, Bi.
It is a further object to provide a kind of system of high-strength high-plasticity Ni-Cr-Co base turbines disk blade material
Preparation Method, it has following steps：
1) by above-mentioned proportion ingredient；
2) step 1) described in dispensing, 2 refines of vacuum drying oven at 1530~1560 DEG C, stirring, thread middling speed uniformly pours into a mould
12~18 seconds, obtain resmelting electrode rod；
3) step 2) described in resmelting electrode rod Jing vacuum consumable remeltings obtain alloy pig homogenization heat treatment, be forged into use
In the bar of turbine disk blade material.
Step 2) the first time refining time in 2 refines is 10~20 minutes, vacuum is 1~0.1Pa；Second
Secondary refining time is 10 minutes, 0.1~0.002Pa of vacuum.
Step 3) the vacuum consumable remelting when be filled with helium, when being filled with helium, vacuum≤6.5Pa.
Step 3) described in homogenization heat-treating methods be 1170 DEG C of holding temperature, the alloy pig with diameter greater than 200mm,
It is 1.5min that temperature retention time is every 1mm temperature retention times；Diameter is less than 200mm alloy pigs, and temperature retention time is 5h.
Step 3) forging initial forging temperature be 1180 DEG C, finish-forging >=1000 DEG C.
Step 3) gained bar need to forge processing, finishing, forging plus man-hour, and bar is with stove intensification, the temperature of processing
1000~1180 DEG C.
Step 3) the bar specification be diameter of phi 20mm~Φ 400mm.
The effect of each element in material of the present invention：
Ni is alloy substrate element, and Main Function is stable austenite tissue, it is ensured that the processing characteristics of alloy, is also to ensure
The basis of good mechanical behavior under high temperature.
Chromium can improve the non-oxidizability of iron-based and nickel-base high-temperature high elastic modulus alloy, and with the increase of Cr contents, material can be obtained
The heat stability of get Geng Gao, it can form antioxidation and erosion-resisting rich Cr in metal surface2O3Protective layer, this protective layer is caused
It is close to depend on metal surface securely, diffusion of the harmful elements such as O, N, S to material internal is prevented, so as to significantly improve alloy
Non-oxidizability and high temperature corrosion resistance.Appropriate chromium can make alloy have good corrosion resistance in medium.Appropriate
Chromium can also improve corrosion resistance of the alloy in oxidizing acid solution, and when particularly Cr, Ni proportioning is appropriate, corrosion resistance is more excellent.To obtain
Preferable antioxygenic property is obtained, the Cr of addition 19%~20% is needed in alloy.
Co is at room temperature close-packed hexagonal structure, is heated to be changed into face centered cubic austenite structure when 420 DEG C.Due to Austria
The bulk diffusion coefficient of family name is little, a large amount of alloying elements of energy solid solution, there is higher elevated temperature strength, acts primarily as solution strengthening effect, can drop
Low Ti and Al dissolubility in the base, thus increase the quantity of hardening constituent；Co can also improve the solid solubility temperature of γ ' phases；Subtract
Few precipitation of the carbide on crystal boundary, to reduce the width of crystal boundary Cr depletion zone；Improve the hot-working character of nickel base superalloy, mould
Shape and impact flexibility also play an important role, and corrosion and heat resistant ability is better than nickel.The antioxygenic property of cobalt is poor in high temperature alloy, because
It is 17.0~18.0% that this Co considers design span of control.
Al generates fine and close nonvolatile Al in alloy surface2O3Oxide-film, Al2O3Film compares Cr2O3Film has preferably anti-
Oxidability and lower oxidation rate, can overcome the Cr of alloy surface2O3Film is easily oxidized more than 1200 DEG C during long-term work
Into volatile CrO3And the weakness destroyed is subject to, and make alloy that there is more preferable high-temperature oxidation resistance, can be used for higher temperature
Degree, can effectively suppress the molecular motion between the foreign body that body under the condition of high temperature is in contact with it.Appropriate Al is added, alloy can be reduced
The fine and close external oxidation protecting film of internal oxidition and formation.The content of this project control Al is 1.3%~1.5%.
Ti, Al are the essential elements of alloy strengthening, play ageing strengthening effect.Ti, Al can be with the Ni interaction shapes in steel
Into Ni3 (TiAl) intermetallic compound, the elevated temperature strength of alloy is significantly improved.Ti interacts to form TiC with the C in alloy.
These second mutually not only stable components, are more importantly difficult agglomeration.Certain quantity, size and more are kept at high temperature
γ ' the phases of distribution are dissipated, can notable reinforced alloys.But Ti, Al are ferritic phase and promote element, too high amount to substantially reduce material
Material toughness, and materials hot working performance can be deteriorated, so that rationally control.Therefore Ti designs control is 3.1~3.4%.
B、Zr：Appropriate B, Zr is added in alloy, is primarily present on crystal boundary, Grain boundary morphology can be changed.Crystal boundary under high temperature
Diffusion is rapid, is the passage that dislocation is easily climbed, and B atoms are enriched on crystal boundary, fill up room and other lattice defects, are reduced
Dislocation climb speed, so as to reinforced alloys.B on crystal boundary can also suppress the early stage of Cr23C6 to gather, and delay sending out for grain-boundary crack
It is raw.In addition B also reduces C to cyrystal boundary segregation, increases the quantity of carbide in crystal boundary, so as to reinforced alloys.B reduces boundary on crystal boundary
Face energy, the formation of the second phase on favourable crystal boundary is allowed to be easier to form spheroidal, improves grain-boundary strength.Therefore the B energy for adding
Significantly improve the creep rupture life of alloy, reduce creep speed, and significantly improve persistent notch sensitivity, carry heavy alloyed plasticity and
Processing characteristics.But too high B, forms hard and crisp compound, or the compound of low melting point, under causing plasticity on crystal boundary
Drop, hot-working character is deteriorated.The content control control of B is 0.005%~0.01%.
Mn can play a part of in the alloy deoxidation, purification alloy.But manganese plus membership somewhat to reduce chromium content relatively low not
The corrosion resisting property of rust steel.When chrome content is sufficiently high in alloy (17%Cr), manganese has no adverse effect to the corrosion resistance of alloy.This
Project Mn design load is below 0.35%.
Si is to reduce γ phase p-block element ps, and certain silicon can play a part of deoxidation, purification alloy, but Si contents are higher, will
Increase the fragility of alloy material so that the processing characteristics of material is reduced, therefore Si is controlled by this alloy, this development alloy
The content of design Si is controlled≤0.20%.
The impact carbon of C is the strong formation element of austenite, and as carbon content increases, hardness strength is improved, and plasticity is reduced.C
It is to form the basic element of carbide reinforced phase, but is also the element for reducing alloy melting point strongly.For requiring with high creep
The casting alloy of intensity, the control of carbon content is most important.It is single to examine in terms of fusing point as the alloy used under superhigh temperature
Consider, too high carbon content is also unsuitable.In this high temperature alloy, crystal boundary is strengthened by the formation of various Mc carbides,
Add C to reduce oxide, put forward heavy alloyed clarity.The composition of this project control C is 0.06~0.08%.
For the harmful elements such as S, P are controlled content in below 60ppm by vacuum melting and vacuum consumable remelting.It is right
It is strict controlled within 8ppm in O.
Ni-Cr-Co base turbines disk blade material of the present invention is shown in Table 1 with Exemplary chemical constituent analysis value.
The invention alloy composition wt% of table 1
The span of control of the objectionable impurities elements of table 2
Compared with conventional turbine disk blade material, the premium properties that alloy bar material of the present invention has specifically is shown in Table 3.
The mechanical property of the material of table 3
After testing, the high-temperature behavior of invention material is：870 DEG C, Rm：200MPa, τ >=100h, A5 >=5%.
The metallurgical quality of vacuum consumable remelting strong influence alloy pig, it is Ni-Cr-Co base turbine disk blade material smeltings
One of critical process of golden quality control.Vacuum consumable remelting fully improves ingot crystal state, reduces inclusion content, improves
Inclusion distribution state, denitrogenate and hydrogen, eliminate macroscopic view and microscopic defect, mitigate alloy pig in segregation.
Note in technique in vacuum consumable remelting it is following some：
A. smelting temperature is difficult too high, and temperature is too high to cause Mn, C solidifying segregation, remelting temperature control (1530~
1560)±5℃；
B. in consumable reflow process, the control of electric current is extremely important, in dispersing under arc condition for guarantee normal smelting, electric current
Increase to stably fused process, change surface quality and improve melting efficiency be favourable.But the growth of electric current is that have certain
Limit, after current value is reached the limit values, arc behavior will disperse the phenomenon that arc changes to narrow arc, cause metal to melt
Drop is directly driven onto steel ingot center, affects the exclusion process of field trash, while cause pool depth and the width of two-phase section to increase,
Enhance the segregation tendency of alloy.Certainly too low electric current is also unfavorable to metallurgical quality and production efficiency.From expendable weight
Current control is in 2500~3000A in molten；
C. the control of helium gas flow, in vacuum consumable, middle introducing helium is to change between alloy pig ingot and crystallizer
The dynamic conditions of kind solidification, forms nonequilibrium state solidification so that alloy pig as-cast structure dendrite attenuates, parallel conjunction on microcosmic
Ingot axial direction dendrite scope is widened, and drops low-alloyed segregation tendency.Helium gas flow is difficult excessive, excessive helium to be made in burner hearth
Vacuum is reduced, and destroys arc behavior, affects melting pool shape.When arc behavior fluctuates, the splashings for falling are swept from crystallizer wall
The molten bath that shape changes can be fallen into, and after the two-phase section being directly shifted up is fixed, the oxide for forming bulk is mingled with.Fill
Vacuum remains no greater than 6.5Pa when entering helium.
High-strength high-plasticity Ni-Cr-Co base turbines disk blade material of the present invention, meet national oil chemical industry, space flight,
The needs in the fields such as aviation, compared with existing wasPaloy, GH4738, NCK20TA material, material of the present invention is by adjustment
The content of Co, Ti, Al, controls the content of hardening constituent so that material composition and organizational structure are with similar products at home and abroad completely not
Together.The high intensity that invention material has has both more preferably plasticity, high impact resistance, superior machining property.Institute of the present invention
High-strength high-plasticity Ni-Cr-Co base turbine disk blade materials are stated, by designing material chemical composition, degree of purity, clean is smelted
Technique, processing and Technology for Heating Processing, and vacuum melting technique, reduce O, S, P content, improve inclusion morphology, and gained is used for
Turbine disk blade material has good intensity, high impact properties, excellent fatigue life, high-ductility.Vacuum melting of the present invention
Electrode bar is again by vacuum consumable remelting processing, all size bar needed for manufacture turbine disk blade processing.Material of the present invention is consolidated
Molten+aging state room-temperature mechanical property：Rm >=1140MPa, Rp0.2 >=785MPa, A >=20%, Z >=30%；Solid solution state HB≤
302, HV5≤340；870 DEG C, Rm：200MPa, τ >=30h, A (5D or 50mm) >=3.5%.
Specific embodiment
Embodiment 1：
Percentage by weight (Wt%) C of material each component of the present invention：0.05, Co:19.0, Cr:16, Ti:3.1, Al:
1.3, Zr:0.07, Mn:0.20, B:0.007, Ni:Surplus.
Each component material is taken by said ratio, high-strength high-plasticity Ni-Cr-Co base turbine disk leaves are prepared in accordance with the following methods
Sheet material：
1) by the proportion ingredient of above-described embodiment；
2) step 1) described in dispensing, 2 refines of vacuum drying oven at 1530~1560 DEG C, first time refine (1530~
1560) at a temperature of ± 5 DEG C, vacuum degree control is in 1~0.1Pa, refine 10~20 minutes；
At a temperature of ± 5 DEG C of (1530~1560), vacuum degree control is in 0.1~more than 0.002Pa, essence for second refine
Refining 10 minutes, with control composition segregation, then carries out electromagnetic agitation；
3) molten steel of vacuum induction melting is uniformly poured into a mould using thread middling speed, the duration of pouring is 12~18 seconds, cast temperature
Degree control temperature obtains first resmelting electrode rod to ± 5 DEG C of (1530~1560)；Accomplish that low temperature is at the uniform velocity poured during cast as far as possible
Note, obtains resmelting electrode rod.
4) resmelting electrode rod Jing vacuum consumable remeltings obtain alloy pig homogenization heat treatment, are forged into high-strength high-plasticity
The bar of Ni-Cr-Co base turbine disk blade materials.
The bar specification is diameter of phi 20mm~Φ 400mm.Wherein, the temperature of homogenization heat treatment is 1170 DEG C, directly
Bar of the footpath more than 200mm, by 1mm temperature retention times 1.5min total temperature retention time is determined；For diameter is less than 200mm alloys
Ingot, temperature retention time is 5h.
During forging bar, 1180 DEG C of forging of beginning, finish-forging is not less than 1000 DEG C, and bar will be through button circle, alignment.Forging processing
When, expect with stove heat up, hot worked scope be 1000~1180 DEG C, due to 750~900 DEG C be carbide, σ phases, Laves phases, λ
1 separates out scope with χ phases, forbids to continue to process below 950 DEG C, otherwise there is the danger of cracking.Single forging ratio is not less than 3.Forging
The bar specification made is diameter of phi 20mm as Φ 400mm.
Bar processing, finishing, flaw detection
Inside and outside quality is carried out using detector device equipment to be detected, using all kinds of press finishing is carried out, keep good
Linearity and the linearity.
Precise bar carries out Precision Machining, control rotating speed and knife speed using high-performance bar special purpose lathe, keeps bar
In high precision, high fineness.
The present embodiment prepares the bar of high-strength high-plasticity Ni-Cr-Co base turbine disk blade materials, adds through follow-up
Work turbine disk blade, can be used for petrochemical industry flue gas turbine expander.
By experiment, room-temperature mechanical property after 1060 DEG C of resulting materials 1 hour, 800 DEG C of solid solution+200 hour Long-term Aging：
Rm=1210MPa, Rp0.2=865MPa, A=24%, Z=36%；Solid solution state HV5=224；870 DEG C, Rm：200MPa, τ >=
80h, A (5D or 50mm) 7.5%.
Percentage by weight (Wt%) C of the material each component of the present invention of embodiment 2：0.06, Co:20.0, Cr:17, Ti:
3.2, Al:1.4, Zr:0.08, Mn:0.20, B:0.008, Ni:For surplus, according to the preparation method described in embodiment 1, height is obtained
The bar of intensity high-ductility Ni-Cr-Co base turbine disk blade material, can be used for aero-turbine machine, turbine of calming the anger.
By experiment, room-temperature mechanical property after 1060 DEG C of resulting materials 1 hour, 800 DEG C of solid solution+200 hour Long-term Aging：
Rm=1260MPa, Rp0.2=910MPa, A=22%, Z=32%；Solid solution state HV5=230；870 DEG C, Rm=200MPa, τ >=
80h, A (5D or 50mm) 7.0%.900 DEG C, 100 hours antioxygen rates are 0.08g/m2.h。
Embodiment 3：Percentage by weight (Wt%) C of material each component of the present invention：0.07, Co:21.0, Cr:18,
Ti:3.4, Al:1.5, Zr:0.08, Mn:0.20, B:0.009, Ni:Surplus, according to the preparation method described in embodiment 1, obtains
The bar of high-strength high-plasticity Ni-Cr-Co base turbine disk blade materials, can be used for space flight, navigation and calms the anger turbine turbine disk blade.
By experiment, room-temperature mechanical property after 1060 DEG C of resulting materials 1 hour, 800 DEG C of solid solution+200 hour Long-term Aging：
Rm=1280MPa, Rp0.2=930MPa, A=20%, Z=29%；Solid solution state HV5=240；870 DEG C, Rm=200MPa, τ >=
80h, A (5D or 50mm) 6.5%.900 DEG C, 100 hours antioxygen rates are 0.08g/m2.h。
Claims (8)
1. a kind of material of high-strength high-plasticity Ni-Cr-Co bases, it is characterised in that the percentage by weight of each component is：
Cr：15.50~19.50%；Co：18.0~21.0%；Ti：3.1~3.4%；Al：1.3~2.0%；Zr≤0.15；B≤
0.02%；Mn≤1.0%；C：0.05~0.07%；P≤0.004%；S≤0.004%, Si≤1.0%；Fe≤2.0%；Cu≤0.2%；
Impurity≤0.015%；Balance of nickel, the impurity is Pb, As, Sb, Sn, Zn, Bi, and the material is prepared in accordance with the following methods：
1）Above-mentioned proportion ingredient；
2）Step 1）Described dispensing, 2 refines of vacuum drying oven at 1530~1560 DEG C, stirring, the uniform cast 12 of thread middling speed~
18 seconds, obtain resmelting electrode rod；
3）Step 2）Described resmelting electrode rod Jing vacuum consumable remeltings obtain alloy pig homogenization heat treatment, are forged into for whirlpool
The bar of wheel disk blade material；Helium is filled with during the vacuum consumable remelting, when being filled with helium, vacuum≤6.5Pa, from expendable weight
Current control is in 2500~3000A in molten.
2. material according to claim 1, it is characterised in that the percentage by weight of each component is：C：0.05~0.07%,
Co:19~21%, Cr:16~18%, Ti:3.1~3.4%, Al:1.3~1.5%, Zr≤0.08, Mn≤0.20, B≤0.009, P
≤0.004%；S≤0.004%, Si≤1.0%；Fe≤2.0%；Cu≤0.2%；Impurity≤0.015%；Balance of nickel.
3. the preparation method of high-strength high-plasticity Ni-Cr-Co sills, it is characterised in that have following steps：
1）The proportion ingredient of material as described in claim 1 or 2；
2）Step 1）Described dispensing, 2 refines of vacuum drying oven at 1530~1560 DEG C, stirring, the uniform cast 12 of thread middling speed~
18 seconds, obtain resmelting electrode rod；
3）Step 2）Described resmelting electrode rod Jing vacuum consumable remeltings obtain alloy pig homogenization heat treatment, are forged into for whirlpool
The bar of wheel disk blade material；Helium is filled with during the vacuum consumable remelting, when being filled with helium, vacuum≤6.5Pa, from expendable weight
Current control is in 2500~3000A in molten.
4. preparation method according to claim 3, it is characterised in that：Step 2）First time refine in 2 refines
Time is 10~20 minutes, and vacuum is 1~0.1Pa；Second refining time is 10 minutes, 0.1~0.002Pa of vacuum.
5. preparation method according to claim 3, it is characterised in that：Step 3）Described homogenization heat-treating methods are
1170 DEG C of holding temperature, the alloy pig with diameter greater than 200mm, it is 1.5min that temperature retention time is every 1mm temperature retention times；Diameter is less than
200mm alloy pigs, temperature retention time is 5h.
6. preparation method according to claim 3, it is characterised in that：Step 3）The initial forging temperature of the forging is 1180
DEG C, finish-forging >=1000 DEG C.
7. preparation method according to claim 3, it is characterised in that：Step 3）Gained bar need to forge processing, finishing, forge
Make plus man-hour, bar heats up with stove, the temperature of processing is 1000~1180 DEG C.
8. preparation method according to claim 3, it is characterised in that：Step 3）The bar specification be diameter of phi 20mm~
Φ400mm。
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| KR20180114226A (en) * | 2016-04-20 | 2018-10-17 | 아르코닉 인코포레이티드 | FCC materials made of aluminum, cobalt, chromium, and nickel, and products made therefrom |
| CN106636850B (en) * | 2016-11-21 | 2019-02-15 | 重庆材料研究院有限公司 | High-temperature oxidation resistance high intensity mixes rare-earth alloy material and preparation method |
| CN106636707B (en) * | 2016-12-29 | 2018-07-03 | 西部超导材料科技股份有限公司 | A kind of smelting process of nickel base superalloy GH4720Li |
| CN107858584A (en) * | 2017-12-14 | 2018-03-30 | 泰兴市长江密封材料有限公司 | A kind of piece of refractory metal material |
| CN109554654B (en) * | 2018-11-23 | 2021-01-29 | 江苏健力钢管有限公司 | Treatment method of high-strength corrosion-resistant steel pipe |
| CN111500917B (en) * | 2020-05-11 | 2021-06-01 | 北京科技大学 | High-strength and high-toughness medium-entropy high-temperature alloy and preparation method thereof |
| CN114990385B (en) * | 2022-05-31 | 2023-09-05 | 上海康晟航材科技股份有限公司 | High-temperature alloy for gas turbine casing and preparation method thereof |
| CN115740314B (en) * | 2022-11-24 | 2023-05-16 | 南京工程学院 | High-strength large forging anti-cracking energy-saving forging process |
| CN116875844B (en) * | 2023-07-28 | 2024-02-09 | 北京钢研高纳科技股份有限公司 | Disk-shaft integrated turbine disk and preparation method thereof |
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| US3512963A (en) * | 1966-07-25 | 1970-05-19 | Int Nickel Co | Process for improving elevated temperature strength and ductility of nickel-base alloys |
| GB1243157A (en) * | 1970-02-19 | 1971-08-18 | Rolls Royce | Nickel-chromium-cobalt alloys |
| CN1086208C (en) * | 1998-12-18 | 2002-06-12 | 中国科学院金属研究所 | High-temp Ni-based cast alloy |
| JP4805803B2 (en) * | 2006-12-19 | 2011-11-02 | 株式会社東芝 | Ni-based alloy and turbine rotor |
| CN102433466A (en) * | 2010-09-29 | 2012-05-02 | 中国科学院金属研究所 | Nickel and cobalt-based high-temperature alloy containing rare earth elements and preparation method thereof |
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