CN102899696B - A kind of coating controls the method for directional solidification nickel-base high-temperature alloy recrystallize - Google Patents
A kind of coating controls the method for directional solidification nickel-base high-temperature alloy recrystallize Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 48
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 47
- 239000000956 alloy Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000007711 solidification Methods 0.000 title claims abstract description 34
- 230000008023 solidification Effects 0.000 title claims abstract description 34
- 238000009713 electroplating Methods 0.000 claims abstract description 23
- 239000012086 standard solution Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 abstract description 9
- 238000011161 development Methods 0.000 abstract description 4
- 239000006104 solid solution Substances 0.000 abstract description 2
- 238000005488 sandblasting Methods 0.000 description 24
- 239000013078 crystal Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 239000012669 liquid formulation Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 229910000601 superalloy Inorganic materials 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 230000005012 migration Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000080590 Niso Species 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention provides a kind of method that coating controls directional solidification nickel-base high-temperature alloy recrystallize, it is characterized in that, adopt the galvanization coating directional solidification nickel-base high-temperature alloy device surface that method is producing distortion to carry out coating process, coating is Ni+CeO
2, wherein CeO
2content is 1 ~ 10%, thickness of coating
Description
Technical field
The present invention relates to the control techniques of recrystallize, specifically a kind of coating controls the technology of directional freeze column crystal and monocrystal nickel-base high-temperature alloy recrystallize.
Background technology
Internal combustion turbine, blade of aviation engine are all use at relatively high temperatures, and blade is mainly by centrifugal action, and at high temperature, the intensity of crystal boundary is not as intracrystalline intensity, and transverse grain boundaries has just become the weak link of blade.For this reason, people developed directional columnargrain even single crystal blade to eliminate transverse grain boundaries or whole crystal boundaries.Compared with conventional polysilicon blade, what these blades had better longitudinal mechanical property and a Geng Gao holds warm ability.
But blade is in directional freeze process, and due to the difference of metal and ceramic-mould, core thermal expansivity, foundry goods can produce distortion.Also likely distortion is produced in school shape subsequently, sandblasting, soldering even military service process.Like this, vanes pyroprocessing (TRANSIENT HIGH TEMPERATURE in solution treatment or military service process) will produce recrystallize.Recrystallize produces transverse grain boundaries, so define again the weak link of blade, has a strong impact on the performance of blade.
At present, for the recrystallize that directional solidification blade produces, the measure taked mainly controls the distortion of blade (as reduced mechanical workout as far as possible, optimization design casting mold, core etc.) prevent blade to produce recrystallize, or set up blade recrystallize standard, strict detection, the blade exceeding a certain degree recrystallize is scrapped at once.
Because blade inevitably passes through some operation (as solidification shrinkage, sandblasting etc.) in process of production, the distortion that these operations produce just cannot be avoided.The recrystallize brought therefrom can significantly reduce Blade roughcast qualification rate, increases cost, has a strong impact on production efficiency.
Due to the detrimental action of above-mentioned recrystallize, people attempt to control recrystallize by certain processing method.About the control of recrystallize, there are some relevant reports abroad.European patent (patent No.: EP1038982A1) adopts the method for gas (mainly the mixed gas of CO and argon gas) carburizing to be diffused in alloy substrate by carbon and forms carbide, utilize carbide particle hinder crystal boundary migration be used for control recrystallize and recrystallize is localized.The method equipment is more complicated, operates more loaded down with trivial details, controls recrystallize, and be mainly used in single crystal alloy with the method controlling to grow.United States Patent (USP) (the patent No.: 5551999) adopt lesser temps repeatedly to reply heat-treating methods to control recrystallize, the method can not suppress recrystallize surface forming core, and it is longer to reply the heat treated time, alloy substrate is easily oxidized, and it is unfavorable that this alloy uses.Also have to adopt inside coating and add the method for boundary-strengthening element to strengthen recrystallize crystal boundary, Crack prevention produces (patent No.: EP1036850A1), and the method is mainly for monocrystal nickel-base high-temperature alloy.The method mainly adds the trace elements such as C, B in the coating, instead of alloy substrate element.And how this method is main manages the disadvantageous effect eliminating recrystallize it is considered that after recrystallize generation, namely strengthens recrystallize crystal boundary, instead of manages the generation suppressing recrystallize.What is more, adopts the method for chemical corrosion directly by the recrystallized layer erosion removal (patent No.: 5413648).Although the method can remove recrystallized layer, for thin-walled monocrystalline or directional columnargrain nickel base superalloy parts obviously inapplicable.
Above-mentioned patent application controls the processing method Problems existing of recrystallize:
(1) equipment of gas carburizing is more complicated, operates more loaded down with trivial details, hinders the migration of crystal boundary to control recrystallize, be mainly used in single crystal alloy by carbide ion.
(2) lesser temps is repeatedly replied heat treating process and can not be suppressed recrystallize surface forming core, and it is longer to reply the heat treated time, and alloy substrate is oxidizable, and it is unfavorable that alloy uses.
(3) method of boundary-strengthening element is added in coating, mainly mainly add the trace elements such as C, B, but not matrix element, for be monocrystal nickel-base high-temperature alloy, and this method is mainly considered, how after recrystallize produces, to eliminate the disadvantageous effect of recrystallize.
(4) chemical corrosion method is directly by recrystallized layer erosion removal.This method is not suitable for thin-walled monocrystalline or directional columnargrain nickel base superalloy parts.
Summary of the invention
The object of the invention is to provide a kind of method controlling directional solidification nickel-base high-temperature alloy recrystallize, and specifically a kind of galvanization coating controls the method for directional solidification nickel-base high-temperature alloy recrystallize, and the recrystallize produced after making deformable blade significantly reduces.
The invention provides a kind of method controlling directional solidification nickel-base high-temperature alloy recrystallize, namely carry out coating on strained directional solidification nickel-base high-temperature alloy surface, coating sample is carried out the standard solution treatment of matrix alloy.It is characterized in that: adopt the galvanization coating directional solidification nickel-base high-temperature alloy device surface that method is producing distortion to carry out coating process, coating is Ni+CeO
2, wherein CeO
2content is 1 ~ 10%, thickness of coating 10 ~ 15
directional solidification nickel-base high-temperature alloy device after above-mentioned coating process is carried out standard solution treatment.With add in coating patent that boundary-strengthening element strengthens recrystallize crystal boundary unlike, here coating hinders recrystallize crystal boundary migration on the one hand, compensates the loss of matrix composition on the other hand and reach the development being used for suppressing recrystallize suppressing Elements Diffusion by coating ingredient.And, the patent adding boundary-strengthening element strengthening recrystallize crystal boundary in coating admits the existence of recrystallize, then the disadvantageous effect eliminating recrystallize is managed, and this patent does not reduce the recrystallize of alloy substrate due to distortion generation, just add the fatigue lifetime that boundary-strengthening element improves alloy substrate.And the object of this patent coating is the development controlling recrystallize, reduce the recrystallize that alloy substrate produces due to distortion to a certain extent.With coating control recrystallize unlike, electroplating process does not almost produce unrelieved stress, does not need stress relief annealing, also just avoids unrelieved stress and produces the possibility of recrystallize.
The method of control directional solidification nickel-base high-temperature alloy recrystallize provided by the invention, its plating process is plating.
The method of control directional solidification nickel-base high-temperature alloy recrystallize provided by the invention, its coating plating solution is NiSO
4h
2o, H
3bO
3, NH
4cl, C
12h
25naSO
4, CeO
2and distilled water.
The method of control directional solidification nickel-base high-temperature alloy recrystallize provided by the invention, its electroplate liquid formulation is 50 ~ 200g/LNiSO
4h
2o, 3 ~ 50g/LH
3bO
3, 5 ~ 30g/LNH
4cl, 0.1 ~ 5g/LC
12h
25naSO
4, 30 ~ 100g/LCeO
2.
The method of control directional solidification nickel-base high-temperature alloy recrystallize provided by the invention, CeO in its electroplate liquid formulation
2granularity requirements be 5 ~ 100nm.
The method of control directional solidification nickel-base high-temperature alloy recrystallize provided by the invention, its electroplating technological parameter is current density is 0.5 ~ 3A/m
2, pH value is 4 ~ 6, and stirring velocity is 50 ~ 300r/min, and electroplating temperature is 10 ~ 80 DEG C.
The invention provides a kind of method that galvanization coating controls directional solidification nickel-base high-temperature alloy recrystallize, its advantage is:
(1) coating provided by the present invention can hinder the migration of recrystallize crystal boundary, also compensates the loss of matrix composition by coating ingredient and reaches the effect suppressing Elements Diffusion, suppressing the development of recrystallize.
(2) coating provided by the present invention decreases the recrystallize that alloy substrate produces due to distortion to a certain extent.
(3) plating process provided by the present invention is plating, and electroplating process does not almost produce unrelieved stress, does not need stress relief annealing, avoids the possibility that unrelieved stress produces recrystallize.
(4) method of control recrystallize provided by the present invention, can make the recrystallize after the deformable blade of internal combustion turbine and aircraft engine significantly reduce.
(5) the present invention's operation is easy to control, enhance productivity.
Accompanying drawing explanation
Fig. 1 is after water sandblasting distortion directional solidification nickel-base high-temperature alloy, does not have coating and the direct recrystallized structure that produces of solution treatment.
Fig. 2 is after water sandblasting distortion directional solidification nickel-base high-temperature alloy, after galvanization coating, then through recrystallized structure that solution treatment produces.
Embodiment
Give further instruction below by embodiment to the present invention, certainly, the present invention is not limited only to following embodiment.
Embodiment 1DZ125L directional solidificating alloy 1# coating controls recrystallize.
DZ125L directional solidification nickel-base nickel base superalloy plate prepared by apparatus for directional solidification, cuts the square of 2 × 12 × 12mm with Linear cut from plate.The face of 12 × 12 (the directional columnargrain directions of growth) is polished, carries out sandblasting with sandblast apparatus.Sandblasting parameter is as follows: blasting pressure is 0.3MPa, and blast time is 1min, and sand grains is SiO
2glass sphere.
Preparation electroplating bath solution, electroplate liquid formulation used is as follows: 150g/LNiSO
4h
2o, 20g/LH
3bO
3, 15g/LNH
4cl, 0.1g/LC
12h
25naSO
4, 50g/L granularity is the CeO of 7nm
2with 1L distilled water.Next, by electroplating device, coating is carried out to part sandblasting sample.Electroplating technological parameter is as follows: current density is 2A/m
2, pH value is about 5.4, and stirring velocity is 170r/min, and electroplating experiments temperature is room temperature.The print electroplated is taken out, dries stand-by.
And then these coating samples and direct sandblasting sample are carried out standard solution treatment, after air cooling, sample is cut the recrystallized structure of observing and producing.The average recrystallize degree of depth of the sample of direct solution treatment reaches 30 μm, the maximum recrystallize degree of depth reaches 56 μm (Fig. 1), and the maximum recrystallize degree of depth of sample after above-mentioned coating process is about 6 μm (Fig. 2), well below the sample of direct sandblasting.
Embodiment 2DZ125L directional solidificating alloy 2# coating controls recrystallize.
DZ125L directional solidification nickel-base nickel base superalloy plate prepared by apparatus for directional solidification, cuts the square of 2 × 12 × 12mm with Linear cut from plate.The face of 12 × 12 (the directional columnargrain directions of growth) is polished, carries out sandblasting with sandblast apparatus.Sandblasting parameter is as follows: blasting pressure is 0.3MPa, and blast time is 1min, and sand grains is SiO
2glass sphere.
Preparation electroplating bath solution, electroplate liquid formulation used is as follows: 100g/LNiSO
4h
2o, 20g/LH
3bO
3, 5g/LNH
4cl, 0.1g/LC
12h
25naSO
4, 30g/L granularity is the CeO of 20nm
2, 1L distilled water.Next, by electroplating device, coating is carried out to part sandblasting sample.Electroplating technological parameter is as follows: current density is 3A/m
2, pH value is about 6, and stirring velocity is 100r/min, and electroplating experiments temperature is room temperature.The print electroplated is taken out, dries stand-by.
And then these coating samples and direct sandblasting sample are carried out standard solution treatment, after air cooling, sample is cut the recrystallized structure of observing and producing.The average recrystallize degree of depth of the sample of direct solution treatment reaches 30 μm, and the maximum recrystallize degree of depth reaches 56 μm, and the maximum recrystallize degree of depth of sample after above-mentioned coating process is about 15 μm, lower than the sample of direct sandblasting.
Embodiment 3DZ125L directional solidificating alloy 3# coating controls recrystallize.
DZ125L directional solidification nickel-base nickel base superalloy plate prepared by apparatus for directional solidification, cuts the square of 2 × 12 × 12mm with Linear cut from plate.The face of 12 × 12 (the directional columnargrain directions of growth) is polished, carries out sandblasting with sandblast apparatus.Sandblasting parameter is as follows: blasting pressure is 0.3MPa, and blast time is 1min, and sand grains is SiO
2glass sphere.
Preparation electroplating bath solution, electroplate liquid formulation used is as follows: 150g/LNiSO
4h
2o, 20g/LH
3bO
3, 15g/LNH
4cl, 0.1g/LC
12h
25naSO
4, 30g/L granularity is the CeO of 10nm
2, 1L distilled water.Next, by electroplating device, coating is carried out to part sandblasting sample.Electroplating technological parameter is as follows: current density is 2A/m
2, pH value is about 5, and stirring velocity is 180r/min, and electroplating experiments temperature is 50 DEG C.The print electroplated is taken out, dries stand-by.
And then these coating samples and direct sandblasting sample are carried out standard solution treatment, after air cooling, sample is cut the recrystallized structure of observing and producing.The average recrystallize degree of depth of the sample of direct solution treatment reaches 30 μm, and the maximum recrystallize degree of depth reaches 56 μm, and the maximum recrystallize degree of depth of sample after above-mentioned coating process is about 10 μm, well below the sample of direct sandblasting.
Embodiment 4DZ125L directional solidificating alloy 3# coating controls recrystallize.
DZ125L directional solidification nickel-base nickel base superalloy plate prepared by apparatus for directional solidification, cuts the square of 2 × 12 × 12mm with Linear cut from plate.The face of 12 × 12 (the directional columnargrain directions of growth) is polished, carries out sandblasting with sandblast apparatus.Sandblasting parameter is as follows: blasting pressure is 0.3MPa, and blast time is 1min, and sand grains is SiO
2glass sphere.
Preparation electroplating bath solution, electroplate liquid formulation used is as follows: 150g/LNiSO
4h
2o, 20g/LH
3bO
3, 15g/LNH
4cl, 0.1g/LC
12h
25naSO
4, 50g/L granularity is the CeO of 12nm
2, 1L distilled water.Next, by electroplating device, coating is carried out to part sandblasting sample.Electroplating technological parameter is as follows: current density is 2A/m
2, pH value is about 6, and stirring velocity is 170r/min, and electroplating experiments temperature is room temperature.The print electroplated is taken out, dries stand-by.
And then these coating samples and direct sandblasting sample are carried out standard solution treatment, after air cooling, sample is cut the recrystallized structure of observing and producing.The average recrystallize degree of depth of the sample of direct solution treatment reaches 30 μm, and the maximum recrystallize degree of depth reaches 56 μm, and the maximum recrystallize degree of depth of sample after above-mentioned coating process is about 12 μm, lower than the sample of direct sandblasting.
Illustrated by above-described embodiment, the recrystallize produced with the sample of deforming alloy without the direct solid solution of coating contrasts, and the recrystallize degree of depth obviously reduces, and recrystallize area occupied also correspondingly obviously reduces.Therefore, galvanization coating method suppresses recrystallize to develop one of most effective means.
Claims (3)
1. controlled a method for directional solidification nickel-base high-temperature alloy recrystallize by coating, it is characterized in that:
(1) adopt the galvanization coating directional solidification nickel-base high-temperature alloy parts surface that method is producing distortion to carry out coating process, coating is Ni+CeO
2, wherein CeO
2mass content is 1 ~ 10%, thickness of coating 10 ~ 15 μm;
(2) the directional solidification nickel-base high-temperature alloy parts after above-mentioned coating process are carried out standard solution treatment.
2. according to the method for control directional solidification nickel-base high-temperature alloy recrystallize according to claim 1, it is characterized in that: described coating plating solution is 50 ~ 200g/LNiSO
4h
2o, 3 ~ 20g/LH
3bO
3, 5 ~ 30g/LNH
4cl, 0.1 ~ 5g/LC
12h
25naSO
4, 30 ~ 100g/LCeO
2and distilled water.
3. according to the method for control directional solidification nickel-base high-temperature alloy recrystallize according to claim 1, it is characterized in that: electroplating technological parameter is current density is 0.5 ~ 3A/m
2, pH value is 4 ~ 6, and stirring velocity is 50 ~ 300r/min, and electroplating temperature is 10 ~ 80 DEG C.
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| CN105803533B (en) * | 2016-05-03 | 2018-06-29 | 中国航空工业集团公司北京航空材料研究院 | A kind of method for removing single crystal super alloy turbo blade recrystallization |
| CN109724556B (en) * | 2017-10-27 | 2020-08-21 | 中国科学院金属研究所 | Method for evaluating recrystallization tendency in precision casting process of nickel-based single crystal superalloy |
| CN111593399B (en) * | 2020-05-22 | 2022-01-07 | 深圳市万泽航空科技有限责任公司 | Method for controlling recrystallization of single crystal high-temperature alloy |
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|---|---|---|---|---|
| JP2002031234A (en) * | 2000-07-11 | 2002-01-31 | Nissan Motor Co Ltd | Low friction sliding member |
| US6699379B1 (en) * | 2002-11-25 | 2004-03-02 | Industrial Technology Research Institute | Method for reducing stress in nickel-based alloy plating |
| CN101935829A (en) * | 2010-10-18 | 2011-01-05 | 上海应用技术学院 | Nanocomposite nickel-plated coating material and preparation method and application thereof |
| CN101974773A (en) * | 2010-11-11 | 2011-02-16 | 山东电力研究院 | Method for improving stress corrosion resistance of Incone1609 alloy heat transfer tube |
| CN102071383A (en) * | 2009-11-25 | 2011-05-25 | 中国科学院金属研究所 | Method for controlling re-crystallization of directionally solidified nickel base high-temperature alloy by using coating method |
-
2011
- 2011-07-28 CN CN201110213538.7A patent/CN102899696B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031234A (en) * | 2000-07-11 | 2002-01-31 | Nissan Motor Co Ltd | Low friction sliding member |
| US6699379B1 (en) * | 2002-11-25 | 2004-03-02 | Industrial Technology Research Institute | Method for reducing stress in nickel-based alloy plating |
| CN102071383A (en) * | 2009-11-25 | 2011-05-25 | 中国科学院金属研究所 | Method for controlling re-crystallization of directionally solidified nickel base high-temperature alloy by using coating method |
| CN101935829A (en) * | 2010-10-18 | 2011-01-05 | 上海应用技术学院 | Nanocomposite nickel-plated coating material and preparation method and application thereof |
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| 超声电铸镍-氧化铈纳米复合材料的研究;孙勇等;《机械科学与技术》;20070430;第26卷(第4期);第487-490页 * |
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