CN104372277B - A kind of graininess δ phase equally distributed GH4169 alloy preparation method - Google Patents
A kind of graininess δ phase equally distributed GH4169 alloy preparation method Download PDFInfo
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- CN104372277B CN104372277B CN201410709368.5A CN201410709368A CN104372277B CN 104372277 B CN104372277 B CN 104372277B CN 201410709368 A CN201410709368 A CN 201410709368A CN 104372277 B CN104372277 B CN 104372277B
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- 239000000956 alloy Substances 0.000 title claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 239000013078 crystal Substances 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000006104 solid solution Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910000816 inconels 718 Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The present invention relates to a kind of graininess δ phase equally distributed GH4169 alloy preparation method, belong to technology field prepared by high-temperature alloy material.The mode combined based on cold deformation and Technology for Heating Processing; cold deformation and heat treatment including GH4169 alloy; first the slab after solid solution is carried out more than 30% cold roller and deformed; quickly cool down under 985 DEG C ± 5 DEG C insulation 1h final vacuum argon shields again; then slab is carried out standard double aging process; finally obtain in GH4169 alloy crystal boundary and intracrystalline equally distributed graininess δ phase; final realization improves GH4169 alloy strength; reduce its crack growth rate, it is thus achieved that the more preferably purpose of fatigue behaviour.
Description
Technical field
The present invention relates to a kind of graininess δ phase equally distributed GH4169 alloy preparation method, belong to high temperature and close
Technology field prepared by gold copper-base alloy.
Background technology
Owing to GH4169 alloy has the highest yield strength, tensile strength between-253～650 DEG C, holds
For a long time intensity and plasticity, and there is good anticorrosive, Flouride-resistani acid phesphatase, hot-working and welding performance, aviation,
The fields such as space flight, oil, chemical industry and the energy have extensive use, and its consumption accounts for world's wrought superalloy and always produces
More than the 45% of amount.Therefore, the emphasis of the change of its tissue and phase always Chinese scholars research, especially
For δ phase content, distribution and morphology change present in alloy, the focus in research especially.
There are some researches show, δ has material impact relative to the intensity of GH4169 alloy and the germinating of crackle with extension.
Find in about δ relative to the research of GH4169 Alloy At Room Temperature Effect on Mechanical Properties, when alloy separates out quality
Mark is the δ phase time of 3.45%, and its surrender and tensile strength have been respectively increased 233MPa and 181MPa, reason
It is that δ phase separates out the notch sensitivity reducing alloy on crystal boundary；And take charge of brave et al. the research of family [man of department is brave,
Liu Feng. δ is relative to the progress of Inconel 718 alloy structure Yu Influence of Fatigue Properties. material Leader .2013 (07):
89-92.] show, when δ phase separates out with graininess and is uniformly distributed in crystal boundary and intracrystalline, the mechanical property of alloy
Can be optimal, reason is that δ becomes the mechanism of cutting through relative to the inhibition of dislocation by walking around in deformation process, alloy
Intensity is further enhanced.Additionally, Viskari et al. [L Viskari, Y Cao, M Norell, et al.Grain
boundary microstructure and fatigue crack growth in Allvac 718Plus superalloy.2011,
528 (6): 2570-2580] Inconel 718 alloy (GH4169) is analyzed containing δ phase with without conjunction in the case of δ phase
The change of the gold protracted fatigue limit, result of study shows: can effectively reduce crackle when there is δ phase time in alloy
Spreading rate, thus improve the protracted fatigue performance of material.In heat forming processes, owing to temperature is by surrounding ring
Border impact is relatively big, and therefore the thermo parameters method of workpiece or blank is the most uneven, and the content of δ phase, pattern
And distribution is the most sensitive to temperature.Utilizing hot forming mode, efficiency is low, and energy consumption is big, workpiece or blank surface
Also due to high temperature and there is severe oxidation.Therefore, hot forming mode is used to obtain equally distributed graininess δ
It is infeasible mutually.
Therefore, it is necessary to consider that GH4169 alloy deformation and heat treatment are separated out δ phase separates, final acquisition exists
Crystal boundary and intracrystalline equally distributed graininess δ phase.
Summary of the invention
It is an object of the invention to the mode combined based on cold deformation and Technology for Heating Processing, it is provided that a kind of graininess
δ phase equally distributed GH4169 alloy high efficiency preparation method, thus improve the strong of GH4169 alloy further
Degree, reduces its crack growth rate, improves fatigue life.
The technical scheme is that
A kind of graininess δ phase equally distributed GH4169 alloy preparation method, cold including GH4169 alloy
Deformation and heat treatment, first the slab after solid solution is carried out more than 30% cold roller and deformed, then through 985 DEG C ± 5 DEG C
Quickly cool down under insulation 1h final vacuum argon shield, then slab is carried out standard double aging process, finally obtains
In GH4169 alloy crystal boundary and intracrystalline equally distributed graininess δ phase.
Described graininess δ phase equally distributed GH4169 alloy preparation method, the cold change of GH4169 alloy
Shape and heat treatment comprise the steps:
A) GH4169 plate is carried out 985 DEG C ± 5 DEG C insulation 1h solution treatment；
B) slab is carried out the rolling deformation that deflection is more than 30%；
C) the slab ethanol after cold deformation or acetone are carried out；
D) cold deformation slab being carried out heat treatment, heat treating regime is: 985 DEG C ± 5 DEG C insulation 1h, vacuum argon
Quickly cool down under gas shielded；
E) slab is carried out double aging process: 720 DEG C ± 5 DEG C insulation 8h, be cooled to 620 DEG C ± 5 DEG C with 50 DEG C/h
Insulation 8h, quickly cools down under vacuum argon shield.
Described graininess δ phase equally distributed GH4169 alloy preparation method, carries out rolling deformation to slab
Deflection be preferably 40～70%.
The design philosophy of the present invention is:
The present invention first the GH4169 alloy slab after solid solution is carried out more than 30% cold roller and deformed；Again spy
Quickly cool down under fixed 985 DEG C ± 5 DEG C of insulation 1h final vacuum argon shields；Then slab is carried out at double aging
(720 DEG C ± 5 DEG C insulation 8h are cooled to 620 DEG C ± 5 DEG C insulation 8h with 50 DEG C/h, under vacuum argon shield to reason
Cooling).It is hereby achieved that in alloy crystal boundary and intracrystalline equally distributed graininess δ phase, finally realize improving
GH4169 alloy strength, reduces its crack growth rate, it is thus achieved that the more preferably purpose of fatigue behaviour.
Advantages of the present invention and providing the benefit that:
The present invention contains GH4169 alloy cold deformation and heat treatment two parts, utilizes the present invention can obtain at crystalline substance
Boundary and intracrystalline equally distributed graininess δ phase, not only improve GH4169 alloy strength, reduce its cracks can spread
Speed；Production efficiency can also be improved, reduce material oxidation degree, reduce waste of material.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of GH4169 alloy.
Detailed description of the invention
In a specific embodiment, graininess δ phase of the present invention equally distributed GH4169 alloy preparation method,
Including cold deformation and the heat treatment of GH4169 alloy, its cold deformation comprises the steps: with heat treatment
A) first GH4169 plate is carried out 985 DEG C ± 5 DEG C insulation 1h solution treatment, to eliminate deformation history
Bring the inhomogeneities of residual stress, tissue and phase；
B) slab is carried out the rolling deformation that deflection is more than 30% (generally 40～70%), deformed
Journey notes the cleaning of slab and the lubricant effect of roll；
C) the slab ethanol after cold deformation or acetone are carried out, to remove the oil stain of steel slab surface, prevent
Severe oxidation is there is in it when subsequent heat treatment；
D) cold deformation slab being carried out heat treatment, heat treating regime is: 985 DEG C ± 5 DEG C insulation 1h, vacuum argon
The lower quickly cooling of gas (first evacuation, then applying argon gas) protection.Wherein, heat treatment temperature can increase with deflection
Properly increasing, maximum temperature is less than 990 DEG C；
E) finally slab is carried out double aging process: 720 DEG C ± 5 DEG C insulation 8h, be cooled to 620 DEG C with 50 DEG C/h
± 5 DEG C of insulation 8h, quickly cool down under vacuum argon shield.
Below by embodiment and accompanying drawing, the present invention is described in more detail.
Embodiment
GH4169 plate is carried out 985 DEG C of 1h solution treatment, eliminates deformation history and bring residual stress, tissue
Inhomogeneities with phase；Slab is carried out the rolling deformation that deflection is 50%；To the slab acetone after cold rolling
It is carried out, removes the oil stain of steel slab surface；Cold rolling slab carries out heat treatment, and heat treating regime is: 985 DEG C of 1h,
Quickly cool down under vacuum argon shield；Then slab carries out double aging process: 720 DEG C are incubated 8h, cold with 50 DEG C/h
But to 620 DEG C of insulation 8h, quickly cool down under vacuum argon shield.
As it is shown in figure 1, from the scanning electron microscope of the scanning electron microscope of GH4169 alloy it can be seen that alloy crystal boundary and
The tissue of intracrystalline separates out equally distributed graininess δ phase.
Embodiment result shows, when alloy crystal boundary and intracrystalline equally distributed graininess δ phase time, can effectively reduce
The spreading rate of crackle, thus improve the protracted fatigue performance of material.
Claims (2)
1. a graininess δ phase equally distributed GH4169 alloy preparation method, it is characterised in that including cold deformation and the heat treatment of GH4169 alloy, cold deformation and the heat treatment of GH4169 alloy comprise the steps:
A) GH4169 plate is carried out 985 DEG C ± 5 DEG C insulation 1h solution treatment；
B) slab is carried out the rolling deformation that deflection is more than 30%；
C) the slab ethanol after cold deformation or acetone are carried out；
D) cold deformation slab being carried out heat treatment, heat treating regime is: 985 DEG C ± 5 DEG C insulation 1h, quickly cools down under vacuum argon shield；
E) slab is carried out double aging process: 720 DEG C ± 5 DEG C insulation 8h, be cooled to 620 DEG C ± 5 DEG C insulation 8h with 50 DEG C/h, quickly cool down under vacuum argon shield, finally obtain in GH4169 alloy crystal boundary and intracrystalline equally distributed graininess δ phase.
2. according to the graininess δ phase equally distributed GH4169 alloy preparation method described in claim 1, it is characterised in that the deflection that slab carries out rolling deformation is preferably 40～70%.
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| CN201410709368.5A CN104372277B (en) | 2014-11-28 | 2014-11-28 | A kind of graininess δ phase equally distributed GH4169 alloy preparation method |
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| CN201410709368.5A CN104372277B (en) | 2014-11-28 | 2014-11-28 | A kind of graininess δ phase equally distributed GH4169 alloy preparation method |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201431A (en) * | 2016-03-18 | 2017-09-26 | 贵州航天精工制造有限公司 | A kind of aging treatment method of raising GH2132 bolt high temperature endurance performances |
| CN106929652B (en) * | 2017-02-15 | 2018-07-24 | 贵州大学 | Heat treatment method is precipitated to connecting bolt second-phase dispersion in a kind of GH4169 |
| CN106834991B (en) * | 2017-02-15 | 2018-09-25 | 贵州大学 | A method of so that δ phases in GH4169 bolts is precipitated in gradient |
| CN110068507B (en) * | 2018-01-22 | 2021-07-23 | 中国科学院金属研究所 | Method for correcting traditional recrystallization model |
| CN108491658B (en) * | 2018-04-02 | 2019-05-07 | 北京航空航天大学 | A kind of low cycle fatigue life appraisal procedure |
| CN109252120B (en) * | 2018-09-26 | 2020-12-18 | 中南大学 | Method for uniformly refining GH4169 alloy forging structure |
| CN109338260A (en) * | 2018-11-29 | 2019-02-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of heat treatment process for restoring GH4169 alloy forged piece weld assembly Notch Stress-Rupture |
| CN111270178A (en) * | 2020-03-11 | 2020-06-12 | 北京钢研高纳科技股份有限公司 | High-efficiency energy-saving heat treatment process for GH4169 alloy |
| CN113981345A (en) * | 2020-07-27 | 2022-01-28 | 大连中航钢研特种材料有限公司 | Heat treatment process for improving performances of Inconel 718 cold-rolled strip and plate |
| CN112708838B (en) * | 2020-11-30 | 2021-12-10 | 河钢股份有限公司 | Preparation method of high-strength nickel-copper alloy cold-drawing aging bar |
| CN112795857A (en) * | 2020-12-12 | 2021-05-14 | 河钢股份有限公司 | Method for improving comprehensive performance of GH4169 alloy plate |
| CN113414246B (en) * | 2021-04-12 | 2022-03-29 | 中航上大高温合金材料股份有限公司 | Preparation method of regenerated GH4169 alloy cold-drawn bar |
| CN115491621B (en) * | 2022-09-21 | 2023-06-09 | 贵阳安大宇航材料工程有限公司 | Method for optimizing grain boundary precipitated phase of GH3128 high-temperature alloy component |
| CN117683989B (en) * | 2024-02-02 | 2024-04-30 | 成都先进金属材料产业技术研究院股份有限公司 | High-temperature alloy sheet and preparation method thereof |
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| CN1507962A (en) * | 2002-12-18 | 2004-06-30 | 中国科学院金属研究所 | High-temperature alloy tube billet working method |
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