CN106566952A - High temperature resistance forge piece with excellent nuclear power performance and production method thereof - Google Patents
High temperature resistance forge piece with excellent nuclear power performance and production method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000005242 forging Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 241000007534 Acacia tetragonophylla Species 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 229910052715 tantalum Inorganic materials 0.000 abstract description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000003471 anti-radiation Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000006104 solid solution Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 16
- 229910045601 alloy Inorganic materials 0.000 description 15
- 239000000956 alloy Substances 0.000 description 15
- 239000011651 chromium Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052804 chromium Inorganic materials 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 229910052750 molybdenum Inorganic materials 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- CSDQQAQKBAQLLE-UHFFFAOYSA-N 4-(4-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine Chemical compound C1=CC(Cl)=CC=C1C1C(C=CS2)=C2CCN1 CSDQQAQKBAQLLE-UHFFFAOYSA-N 0.000 description 1
- YFCIFWOJYYFDQP-PTWZRHHISA-N 4-[3-amino-6-[(1S,3S,4S)-3-fluoro-4-hydroxycyclohexyl]pyrazin-2-yl]-N-[(1S)-1-(3-bromo-5-fluorophenyl)-2-(methylamino)ethyl]-2-fluorobenzamide Chemical compound CNC[C@@H](NC(=O)c1ccc(cc1F)-c1nc(cnc1N)[C@H]1CC[C@H](O)[C@@H](F)C1)c1cc(F)cc(Br)c1 YFCIFWOJYYFDQP-PTWZRHHISA-N 0.000 description 1
- 229910014813 CaC2 Inorganic materials 0.000 description 1
- 101100219382 Caenorhabditis elegans cah-2 gene Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical compound [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a high temperature resistance forge piece with excellent nuclear power performance and a production method thereof. The forge piece is improved on the basis of GH4169A. The content of an element Ti, an element Mo, and an element Cr which can improve the intensity of the forge piece is adjusted to the upper limit of the standard requirement content, and a small number of tantalum elements are added. The forge piece comprises the following main components of, by weight, 0.03%-0.08% of C, 19.00%-21.00% of Cr, 50.00%-55.00% of Ni, 0.50%-1.00% of Co, 3.0%-3.30% of Mo, 0.3%-0.7% of Al, 1.0%-1.15% of Ti, 4.75%-5.50% of Nb and 0.01%-0.10% of Ta. Through the forging process of the combination among hot forging, finish forging, solid solution heat treatment and aging heat treatment, the intensity of the forge piece is effectively improved, and anti-radiation performance of the forge piece is obviously improved.
Description
Technical field
The present invention relates to high temperature alloy forging technical field, particularly the high temperature resistant forging of a kind of nuclear power function admirable
Part and its production method.
Background technology
GH4169 alloys are with the γ of body-centered tetragonal " and the nickel-base high-temperature of face-centred cubic γ ' phases precipitation strength is closed
Gold, has high intensity, good toughness within 700 DEG C and is respectively provided with corrosion resistance in high and low temperature environment,
And have good welding performance, without postwelding tearing tendency, in aerospace, nuclear energy, petroleum industry and extrusion die
In suffer from extensive and apply.
The GH4169A that control B content is obtained on the basis of GH4169 has in nuclear power industry field widely should
With.Generally, the chemical composition of GH4169A alloys includes standard analysis, high-quality composition and high-purity composition.
GH4169A has a wide range of applications in the preparation of fission-type reactor part, such as in-pile component, boron note case,
Core weary material storage and transportation apparatus and nuclear fuel pond, the especially forging of GH4169A alloys, due to forging processing energy
Ensure the seriality of metal fibrous tissue, the fibrous tissue and forging profile for making forging is consistent, metal stream
Line is complete, it is ensured that part has good mechanical property with long service life；Due to such application
Use environment is all high temperature and high pressure environment, is typically required with good mechanical property, it is also required that well
Anti- neutron irradiation performance, the satisfaction of its anti-neutron irradiation performance mainly ensured by Composition Control, that is, passed through
Stress corrosion under niobium tantalum content is controlled to ensure its good anti-neutron irradiation environment, by controlling neutron-absorbing
The big element cobalt in section and boron are ensureing the stability of the material structure and the failure resistance of material.
There is provided it is a kind of forging processing after excellent performance, while the high temperature alloy forging with shielding property is ability
Field technique personnel's technical issues that need to address.
The content of the invention
It is an object of the invention to provide the high temperature resistant forging and its production method of a kind of nuclear power function admirable, the height
Mechanical performance is excellent after temperature alloy forging low cost of manufacture, processing, and shielding property is good.
The technical scheme is that, be improved on the basis of GH4169A standard analysis, control can be with
The content of Ti, Mo, Cr element of the strength of materials is improved, is adjusted to standard and is required the upper limit of content, increased
Plus a small amount of tantalum element, control affects the elemental niobium of anti-neutron irradiation performance, cobalt and the boron of material good to ensure its
Good anti-neutron irradiation performance；A kind of composition by weight percent of the high temperature resistant forging of nuclear power function admirable is：
C 0.03%～0.08%；
Cr 19.00～21.00%；
Ni 50.00～55.00%；
Co 0.50～1.00%；
Mo 3.0～3.30%；
Al 0.3～0.7%；
Ti 1.0～1.15%；
Nb 4.75～5.50%；
B≤0.006%；
Mg≤0.01%；
Mn≤0.35%；
Si≤0.35%；
P≤0.015%；
S≤0.015%；
Cu≤0.30%；
Ca≤0.01%；
Ta 0.01～0.10%, balance of ferrum.
The reasons why determining above-mentioned main chemical compositions is as follows：
Carbon：Carbon can increase the low temperature intensity of alloy by solution strengthening, play invigoration effect；Carbon content
Span of control, below the dissolubility in carbon in ferrite or close to the dissolubility of carbon in ferrite, therefore
By carbon content is preferably 0.03%～0.08%.
Chromium：Chromium is ferrite former, can significantly improve intensity, anti-radiation, but while reduce plasticity and
Toughness；But chromium content is too high, ferrite content in austenite can be caused to increase, therefore the content of chromium is preferred
Control, in the upper limit, is 19.00～21.00%.
Nickel：Nickel is strong austenite former, increases the stability that nickel content is favorably improved austenite structure,
The intensity of material can be improved, and keeps good plasticity and toughness；Nickel has higher radiation protection ability to soda acid,
Therefore preferably 50.00%～55.00%.
Cobalt：Cobalt can effectively improve the toughness of material hard alloy, be favorably improved the stability of austenite structure,
The intensity of material can be improved, and keeps good plasticity；Therefore preferably 0.50%～1.00%.
Molybdenum：Molybdenum is ferrite former, and molybdenum is added in high temperature alloy can improve the pitting corrosion resistance of high temperature alloy
Can, its intensity can be improved by solution strengthening, molybdenum content is preferably controlled in into the upper limit, it is 3.0%～3.3%.
Aluminum：A small amount of aluminium element can crystal grain thinning, improve material impact flexibility, aluminum also have antioxidation
Property and corrosion resistance, aluminum shares with chromium, silicon, and the high temperature non-scale performance and high temperature resistant for being remarkably improved steel is rotten
The ability of erosion, but the shortcoming of aluminum is hot-working character, welding performance and the machinability for affecting steel, therefore
Aluminium content is preferably into 0.3%～0.7%.
Titanium：In the temperature-rise period of material rolling, titanium and nitrogen, the little particle for combining to form disperse of carbon, to Austria
Family name's body crystal boundary plays fixation, hinders the migration of austenite grain boundary, effectively prevents AUSTENITE GRAIN COARSENING, and
Titanium is separated out in austenite with nitrogen, carbon compound to before ferritic transformation in temperature-fall period, becomes ferritic
Equiax crystal, makes ferritic crystal grain refinement, can also avoid intercrystalline corrosion, improves the anti-radiation of steel；Cause
Ti content is preferably 1.0%～1.15% by this.
Niobium:Intensity can be improved with crystal grain thinning and the superheated susceptivity and temper brittleness of reduction material, can also be changed
Kind welding performance, prevents intercrystalline corrosion phenomenon；Content of niobium is preferably into 4.75～5.5%.
Boron：Add micro boron to improve the compactness and hot rolling performance of steel in steel, improve intensity.
Magnesium：Micro magnesium elements can make this to improve Ni-based form, chi with carbide in iron-base superalloy
Very little and distribution, can significantly improve its performance；When but content of magnesium is higher, it may appear that low melting point eutectic magnesium phase
Separate out and performance is substantially deteriorated, therefore content of magnesium is preferably less than into 0.01%.
Manganese：Increasing manganese content can improve the hardness of steel, increase the solid solubility of nitrogen in high temperature alloy, but manganese
Too high levels, can cause to produce martensite in high temperature alloy, therefore manganese content is preferably less than into 0.35%.
Silicon：Silicon can significantly improve the elastic limit of steel, yield point and tensile strength, used as the formation of chromium equivalent
Element, and molybdenum, chromium etc. combines, can improve the corrosion resistance and non-oxidizability of steel, therefore by silicone content control
It is 0.75～1.0% in the upper limit.
Sulfur, phosphorus：Impurity element during alloy smelting.
Copper：Copper can improve intensity and toughness, particularly atmospheric corrosion performance.Have the disadvantage easily to be produced in hot-working
Heat is crisp, and copper content is significantly reduced more than 0.5% plasticity.When copper content is less than 0.50% to weldability without impact.
Therefore copper content is preferably less than into 0.30%.
Calcium：Deoxidation and desulfurizing agent in smelting process, with most of nonmetallic direct reaction during heating, such as with sulfur,
Nitrogen, carbon, hydrogen reaction generate calcium sulfide CaS, CaCl2 Ca3N2, Acetylenogen. CaC2 and calcium hydride CaH2.
Tantalum：Tantalum element can significantly improve its low temperature intensity by solution strengthening, by being combined with carbon it can be avoided brilliant
Between corrode, the tantalum element of certain content can make material have more excellent shielding property, but too high levels meeting
Cause anticorrosion stress-resistant hydraulic performance decline caused under radiation parameter and low-temperature impact toughness to decline, therefore be preferably
0.01～0.10%.
The high temperature resistant forging of the nuclear power function admirable of the present invention will can improve Ti, Mo, Cr element of its intensity
Content, adjusted to standard and required the upper limit of content, can effectively improve the intensity of material, increase a small amount of
Tantalum element, can effectively improve the shielding property of material, reduce the intercrystalline corrosion of material.
A kind of production method of the high temperature resistant forging of above-mentioned nuclear power function admirable, comprises the steps：
A. first by above-mentioned corresponding proportioning by vacuum drying oven melting acquisition sample steel ingot；
B. by the strand Heating Steel Ingots to 1070-1090 DEG C smelted, come out of the stove after insulation 1.5-2.5 hours and forge,
Many fire time rough forges are carried out, final forging temperature is not less than 950 DEG C；Repeatedly forging can improve workpiece with crystal grain thinning
Energy；
C. the workpiece that rough forge is obtained is annealed in time, temperature 950-1050 DEG C, and protected according to thickness setting
The warm time；
D. finish forge is carried out to the workpiece after annealing, obtains finish-forging finished product；
E. finish-forging finished product is carried out into finished product heat treatment.
Further, in step B, the machining deformation amount of each rough forge is not more than 20%, controls single deflection,
Increase forges number of times, effectively can organize crystal grain thinning.
Further, in step D, the processing temperature of finish forge is 900-950 DEG C, it is ensured that plus the plasticity in man-hour.
Further, in step E, the finished product heat treatment includes solution heat treatment and aging strengthening model, solid solution heat
960 DEG C ± 10 DEG C for the treatment of temperature, insulation is no less than 1 hour, can adopt in oil cooling, air cooling or water-cooled
The type of cooling is planted, aging strengthening model is divided into two sections, and first paragraph is heated to 720 DEG C ± 5 DEG C, and insulation is no less than 8
Hour, with 50 DEG C/when stove be cooled to 620 DEG C ± 5 DEG C, again insulation be no less than 8 hours, then carry out air cooling.
The high temperature resistant forging production method operation of the nuclear power function admirable of the present invention is simple, it is easy to control, Jing Guoduo
Secondary forge hot and warm forging combine, can effective crystal grain thinning, significantly improve workpiece performance.
Specific embodiment
Embodiment
The present embodiment produces the high temperature resistant forging of the nuclear power function admirable of 3 batches, in 3 batch high temperature alloys
Different rare earth elements are added in smelting process, and remaining each element composition is added into vacuum metling according to proportioning
Stove, and 50kg vacuum drying ovens are passed through by corresponding proportioning suitably with addition of graphite according to decarburization situation in smelting process
Melting obtains sample steel ingot；By the strand smelted, rising head is cut, be heated to 1080 DEG C, insulation 1.5 is little
When after come out of the stove and forge, final forging temperature is not less than 950 DEG C and is repeatedly forged, and per fire time deflection 20 are less than
%；After the completion of rough forge, workpiece is annealed in time, temperature 1000-1050 DEG C；Workpiece after annealing is entered
Row finish forge, processing temperature 900-950 DEG C obtains finish-forging finished product；By finish-forging finished product carry out solution heat treatment and when
Effect heat treatment, is heated to 960 DEG C ± 10 DEG C, is incubated 1 hour, and (other embodiments can be with can to adopt oil cooling
Using air cooling or water-cooled), aging strengthening model is divided to two sections to carry out, and first paragraph is heated to 720 DEG C ± 5 DEG C, insulation 8
Hour, with 50 DEG C/when stove be cooled to 620 DEG C ± 5 DEG C, again be incubated 8 hours, then carry out air cooling.
It is right for carrying out with the high temperature alloy forging that same processing technique is prepared for GH4169A standard ingredients
Than.
The GH4169A codes and standards values of table 1, embodiment and comparative example composition (%)
The GH4169A codes and standards values of table 2, embodiment and comparative example mechanical property
| Project | Tensile strength/psi | Yield strength/psi | Hardness/HRC |
| Standard value | 180 | 150 | 36 |
| Embodiment 1 | 224 | 189 | 47 |
| Embodiment 2 | 216 | 185 | 45 |
| Embodiment 3 | 211 | 180 | 46 |
| Comparative example | 184 | 153 | 40 |
The high-temperature forging for obtaining sampling is analyzed, the chemical composition for obtaining carries out machine referring to table 1 to sample
Tool performance test, by the content for improving Ti, Mo, Cr element, increases a small amount of rare earth element, Ke Yiyou
Effect improves the intensity of material, and the forging tensile strength for obtaining improves more than 15%, and concrete outcome is referring to table 2.Together
The tantalum element of Shi Shaoliang can improve its anti-radiation.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to this
The restriction of bright embodiment.For those of ordinary skill in the field, on the basis of the above description
Can also make other changes in different forms.There is no need to give all of embodiment
It is exhaustive.And these belong to the obvious change extended out of spirit or variation of the present invention still in the present invention
Protection domain in.
Claims (5)
1. a kind of high temperature resistant forging of nuclear power function admirable, it is characterised in that chemical composition and its mass percent are：
C 0.03%~0.08%；
Cr 19.00~21.00%；
Ni 50.00~55.00%；
Co 0.50~1.00%；
Mo 3.0~3.30%；
Al 0.3~0.7%；
Ti 1.0~1.15%；
Nb 4.75~5.50%；
B≤0.006%；
Mg≤0.01%；
Mn≤0.35%；
Si ≤0.35%；
P≤0.015%；
S≤0.015%；
Cu≤0.30%；
Ca≤0.01%；
Ta 0.01 ~ 0.10%, balance of ferrum.
2. the production method of the high temperature resistant forging of nuclear power function admirable according to claim 1, it is characterised in that comprise the steps：
A. first by above-mentioned corresponding proportioning by vacuum drying oven melting acquisition sample steel ingot；
B. by the strand Heating Steel Ingots to 1070-1090 DEG C smelted, come out of the stove after insulation 1.5-2.5 hours and forge, carry out many fire time rough forges, final forging temperature is not less than 950 DEG C；
C. the workpiece that rough forge is obtained is annealed in time, temperature 950-1050 DEG C, and temperature retention time is set according to thickness；
D. finish forge is carried out to the workpiece after annealing, is processed using warm forging, obtain finish-forging finished product；
E. finish-forging finished product is carried out into finished product heat treatment.
3. production method according to claim 2, it is characterised in that in step B, the machining deformation amount of each rough forge is not more than 20%.
4. production method according to claim 2, it is characterised in that in step D, the processing temperature of finish forge is 900-950 DEG C.
5. production method according to claim 2, it is characterised in that in step E, the finished product heat treatment includes solution heat treatment and aging strengthening model, 960 DEG C ± 10 DEG C of solution heat treatment temperature, insulation is no less than 1 hour, can adopt a kind of type of cooling in oil cooling, air cooling or water-cooled, aging strengthening model is divided into two sections, first paragraph is heated to 720 DEG C ± 5 DEG C, and insulation is no less than 8 hours, with 50 DEG C/when stove be cooled to 620 DEG C ± 5 DEG C, insulation again is no less than 8 hours, then carries out air cooling.
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| CN111349766A (en) * | 2020-02-24 | 2020-06-30 | 辽宁工业大学 | A kind of heat treatment method for high temperature resistant alloy material |
| CN112593120A (en) * | 2020-12-09 | 2021-04-02 | 上海蓝铸特种合金材料有限公司 | Nickel-based multi-element alloy, pipe made of nickel-based multi-element alloy and preparation method of pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107841657A (en) * | 2017-09-30 | 2018-03-27 | 中国科学院金属研究所 | A kind of high tough Ni Cr Mo base casting alloys |
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| CN111349766B (en) * | 2020-02-24 | 2021-07-20 | 辽宁工业大学 | A kind of heat treatment method for high temperature resistant alloy material |
| CN112593120A (en) * | 2020-12-09 | 2021-04-02 | 上海蓝铸特种合金材料有限公司 | Nickel-based multi-element alloy, pipe made of nickel-based multi-element alloy and preparation method of pipe |
| CN112708802A (en) * | 2020-12-11 | 2021-04-27 | 西安聚能高温合金材料科技有限公司 | High-temperature-resistant material for tool and die and preparation method thereof |
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