CN102672163B - Powdery interlayer material for liquid-phase diffusion bonding of GH4169 high-temperature alloy and preparation method of same - Google Patents
Powdery interlayer material for liquid-phase diffusion bonding of GH4169 high-temperature alloy and preparation method of same Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000011229 interlayer Substances 0.000 title abstract 5
- 239000007791 liquid phase Substances 0.000 title abstract 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 14
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 14
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- 239000000843 powder Substances 0.000 claims description 150
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
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- 239000002184 metal Substances 0.000 description 36
- 229910052751 metal Inorganic materials 0.000 description 36
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 17
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Abstract
The invention provides a powdery interlayer material for liquid-phase diffusion bonding of a GH4169 high-temperature alloy and a preparation method of the same, and relates to interlayer materials for the liquid-phase diffusion bonding and preparation method thereof. The problems on many brittle compounds, nonuniformity in components, poor compatibility of a connector and a parent material, difficulty in harmony of post-heat treatment process and heat treatment process of the parent material and incapability of meeting high requirements under room-temperature and high-temperature environments in the prior art are to be solved in the invention. The powdery interlayer material is prepared from primary elements Ni, Cr and Fe with the addition of melting-point lowering elements Si and B as well as enhancing elements Nb, Ti and Mo by adopting a high-performance ball milling process. The preparation method provided by the invention is free from pollution of processing oxidation and wetting agent; the prepared powdery interlayer material has the advantages of low content of foreign matters, high purity, uniform melting and good flowability; the prepared material is applicable to a liquid-phase diffusion bonding connector of the GH4169 high-temperature alloy; and the obtained bonding product has the characteristics of high tensile strength and good plasticity, and can meet requirements for high performances of the connector.
Description
Technical field
The present invention relates to a kind of liquid diffusion bonding intermediate layer material and preparation method thereof.
Background technology
GH4169 alloy is Ni-Cr-Fe base ageing strengthening high temperature alloy, in the intensity below 650 ℃, occupy first of high temperature alloy, and there is good thermal fatigue resistance, anti-oxidant, radioresistance and hot and cold processing characteristics, be widely used in critical aircraft engine parts, aviation and the turbine disk for ground, the manufacture of forging compressor blade, securing member, engine shaft, engine chamber, jet pipe.Wherein permitted multipart quality most important to increasing work efficiency, guarantee reliability and safety, General Promotion overall performance.Thereby the complex component that GH4169 high temperature alloy is made connects just to become makes the very important step of high performance unit, Aero-Space are to reach 90% of postwelding mother metal to the requirement of high temperature alloy jointing mechanical property.Liquid diffusion bonding compare with other method of attachment have that joint distortion amount is little, structural constituent evenly, performance approaches the advantages such as mother metal most, become and connect the most suitable method of GH4169 alloy component.
But for connecting the intermediate layer material of nickel base superalloy, there is following problem at present:
1, Ni-Cr-B or Ni-Cr-Si intermediate layer material, easily form more boride or silicide in joint interface, cause joint performance degradation, and no matter room temperature or elevated temperature strength are all relatively low, cannot meet the high request to performance;
2, Ni-Cr-Si-B intermediate layer material is good to the wetability of nickel base superalloy, in joint interface, frangible compounds is relatively less, but in whole joint, element distributes even not, joint and mother metal composition compatibility are poor, performance has certain gap, and joint mechanical behavior under high temperature can not meet the demands, particularly under hot environment, can not guarantee security;
3, for conventional Ni-based intermediate layer material, connect the joint that nickel base superalloy obtains, Technology for Heating Processing is chosen difficulty, especially synchronizes with mother metal and realizes the recovery of performance and strengthen very difficult.
Summary of the invention
The present invention will solve that existing GH4169 high temperature alloy liquid diffusion bonding joint frangible compounds is many, uneven components, joint is poor with mother metal compatibility, after-baking technique is difficult to is in harmonious proportion mutually with mother metal Technology for Heating Processing, performance cannot meet high request under room temperature and hot environment problem, and a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding and preparation method thereof is provided.
The present invention is made by 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.
The preparation method of the above-mentioned powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding carries out according to the following steps:
One, take by weight percentage 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder, be mixed to get alloy powder;
Two, alloy powder step 1 being obtained and abrading-ball are placed in high-energy ball milling tank, vacuumize in backward ball grinder and be filled with argon gas, with the rotating speed of 250～350r/min, ball milling 4～20h, obtains the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding.
In the prepared intermediate layer material of the present invention, Ni, Cr, Fe are matrix element, its proportioning is similar to matrix element proportioning in GH4169 high temperature alloy mother metal, this has just greatly reduced the homogenization time of three kinds of matrix elements in isothermal solidification process, can within the relatively short time, obtain the joint higher with mother metal compatibility; One of molten element falls in Si, can improve its wettability, and it is evenly distributed on joint area, to a certain degree lifting sub plasticity; B topmostly in the prepared intermediate layer material of the present invention falls molten element, not only can improve its wettability, and in connection procedure, element dissolves, spreads topmost effect element especially; Nb, Ti, Mo strengthen element, are used in connection procedure, forming the wild phase identical with high temperature alloy hardening constituent composition, improve the intensity of weld seam.The intermediate layer material composition of gained of the present invention is even, the advantage such as purity is high, good fluidity.Take the preset intermediate layer material mode of tiling in the middle of banjo fixing butt jointing, diffusion connects when temperature is 1150～1180 ℃ can obtain complete GH4169 high temperature alloy liquid diffusion bonding joint, joint has good mechanical property, the percentage elongation of postwelding joint reaches more than 50%, showing that element in joint distributes reaches the uniformity of higher degree with mother metal, after heat treatment, joint room temperature tensile strength is up to 95.7% of postwelding mother metal, percentage elongation can reach 10%, 650 ℃ of elevated temperature strengths can reach 93.2% of postwelding mother metal, show that the GH4169 joint that adopts this intermediate layer material to obtain has the Technology for Heating Processing matching with mother metal, meet the performance requirement that butt joint intensity reaches postwelding mother metal 90%, there is room temperature and high temperature tensile strength is high, plasticity is good, can meet the performance requirement of docking head height.
Powder intermediate layer material preparation method in the present invention is compared with the method for preparing intermediate layer material of traditional employing smelting or sintering, of the present invention used method is not subject to the pollution of processing oxidation and wetting agent, prepared powder intermediate layer impurities of materials content is few, purity is high, fusing is even, good fluidity.
The powder intermediate layer material of liquid diffusion bonding provided by the present invention is for the liquid diffusion bonding of GH4169 high temperature alloy.
Accompanying drawing explanation
Fig. 1 is the secondary electron scanned photograph of microscopic appearance of the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding of embodiment mono-preparation;
Fig. 2 is the interface microstructure morphology of the liquid diffusion bonding joint of the test two sheet material samples that obtain;
Fig. 3 is the photo of the tensile sample of the test two sheet material samples that obtain;
Fig. 4 is the photo before testing three three sample heat treatments that make and after heat treatment.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: present embodiment is made by 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.
In present embodiment, preferred scheme is: for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding, made by weight percentage by 50.7%～51.93% Ni powder, 16.9～17.0% Cr powder, 16.5%～17.0% Fe powder, 4.2～4.3% Si powder, 1.82%～1.9% B powder, 4.9%～5.2% Nb powder, 0.95%～1.0% Ti powder and 2.8%～2.9% Mo powder.
Utilize the powder intermediate layer material of present embodiment, take the preset intermediate layer material mode of tiling in the middle of banjo fixing butt jointing, in diffusion, connect when temperature is 1150～1180 ℃ and can obtain complete GH4169 high temperature alloy liquid diffusion bonding joint, joint has good mechanical property, the percentage elongation of postwelding joint reaches more than 50%, showing that element in joint distributes reaches the uniformity of higher degree with mother metal, after heat treatment, joint room temperature tensile strength is up to 95.7% of postwelding mother metal, percentage elongation can reach 10%, 650 ℃ of elevated temperature strengths can reach 93.2% of postwelding mother metal, show that the GH4169 joint that adopts this intermediate layer material to obtain has the Technology for Heating Processing matching with mother metal, meet the performance requirement that butt joint intensity reaches postwelding mother metal 90%.
The specific embodiment two: present embodiment is different from the specific embodiment one: made by 51.63% Ni powder, 17.2% Cr powder, 16.5% Fe powder, 4% Si powder, 2% B powder, 5.0% Nb powder, 0.87% Ti powder and 2.8% Mo powder by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.Other is identical with the specific embodiment one.
The specific embodiment three: present embodiment is different from the specific embodiment one or two: made by 51.47% Ni powder, 17.0% Cr powder, 16.63% Fe powder, 4% Si powder, 2% B powder, 5.1% Nb powder, 0.91% Ti powder and 2.89% Mo powder by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.Other is identical with the specific embodiment one or two.
The specific embodiment four: present embodiment is carried out according to the following steps for the preparation method of the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding:
One, take by weight percentage 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder, be mixed to get alloy powder;
Two, alloy powder step 1 being obtained and abrading-ball are placed in high-energy ball milling tank, vacuumize in backward ball grinder and be filled with argon gas, with the rotating speed of 250～350r/min, ball milling 4～20h, obtains the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding.
The powder intermediate layer material that utilizes present embodiment to prepare, take the preset intermediate layer material mode of tiling in the middle of banjo fixing butt jointing, in diffusion, connect when temperature is 1150～1180 ℃ and can obtain complete GH4169 high temperature alloy liquid diffusion bonding joint, joint has good mechanical property, the percentage elongation of postwelding joint reaches more than 50%, showing that element in joint distributes reaches the uniformity of higher degree with mother metal, after heat treatment, joint room temperature tensile strength is up to 95.7% of postwelding mother metal, percentage elongation can reach 10%, 650 ℃ of elevated temperature strengths can reach 93.2% of postwelding mother metal, show that the GH4169 joint that adopts this intermediate layer material to obtain has the Technology for Heating Processing matching with mother metal, meet the performance requirement that butt joint intensity reaches postwelding mother metal 90%.
The specific embodiment five: present embodiment is different from the specific embodiment four: the quality purity of described Ni powder, Cr powder, Fe powder, Nb powder, Ti powder and Mo powder is 99%～99.95%.Other is identical with the specific embodiment four.
The specific embodiment six: present embodiment is different from the specific embodiment four or five: the quality purity of described Si powder and B powder is 99%～99.9%.Other is identical with the specific embodiment four or five.
The specific embodiment seven: present embodiment is different from one of specific embodiment four to six: in step 2, ball material mass ratio is (8～20) during ball milling: 1, filler ratio is 45%～55%.
In present embodiment, ball material mass ratio refers to the ratio of mill ball quality and alloy powder quality, and filler accounts for 45%～55% of ball grinder volume than 45%～55% for abrading-ball and alloy powder cumulative volume.
The specific embodiment eight: present embodiment is different from one of specific embodiment four to seven: the ball milling in step 2 is intermittent ball milling, the every running 0.5～2h of ball mill, suspends 0.5～1h.Other is identical with one of specific embodiment four to seven.
The specific embodiment nine: present embodiment is different from one of specific embodiment four to eight: in step 2, with the rotating speed of 270～340r/min, intermittent ball milling 6～18h, ball material mass ratio is (10～18): 1.Other is identical with one of specific embodiment four to eight.
The specific embodiment ten: present embodiment is different from one of specific embodiment four to nine: in step 2, with the rotating speed of 280～320r/min, intermittent ball milling 10～15h, ball material mass ratio is (12～16): 1.Other is identical with one of specific embodiment four to nine.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-:
The present embodiment carries out according to the following steps for the preparation method of the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding:
One, take by weight percentage 51.63% Ni powder, 17.2% Cr powder, 16.5% Fe powder, 4% Si powder, 2% B powder, 5.0% Nb powder, 0.87% Ti powder and 2.8% Mo powder, be mixed to get alloy powder;
Two, alloy powder step 1 being obtained and abrading-ball are placed in high-energy ball milling tank, vacuumize in backward ball grinder and are filled with argon gas, and with the rotating speed of 300r/min, ball milling 12h, obtains the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding; Wherein ratio of grinding media to material is that 12: 1, filler ratio are 44%.
Test one:
Get two GH4169 high temperature alloy mother metals that are of a size of 12mm * 12mm * 40mm, polish step by step with 400#, 500#, 600#, 800#, 1000# abrasive paper for metallograph on soldered surface, then adopt ultrasonic washing instrument to clean in acetone soln, utilize the powder intermediate layer material of embodiment mono-preparation, the preset intermediate layer material mode of taking to tile connects two mother metals, and in diffusion, connecting temperature is to be incubated 1h under the condition of 1150 ℃, is warming up to 1180 ℃, insulation 1h, obtains sample one.
Test two: adopt electric spark wire cutting method, cut down from testing a sample obtaining a sheet material that thickness is 2mm, and with 80#～600# sand paper, sheet material specimen surface line cutting tool marks are polished, then use acetone ultrasonic cleaning clean, obtain sheet material sample
Test three: separately get six GH4169 high temperature alloy mother metals that are of a size of 12mm * 12mm * 40mm, adopt the method for test one, make again 3 samples, these 3 samples are heat-treated, first at 1050 ℃, be incubated 1h, then be cooled to 900 ℃ of insulation 4h, be then warming up to 980 ℃ of insulation 1h, finally be cooled to 718 ℃ of insulation 15h, complete heat treatment.
Said sample is tested, and result is as follows:
Fig. 1 is the secondary electron scanned photograph of microscopic appearance of the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding of embodiment mono-preparation, as can be seen from Figure 1 intermediate layer material powder particle size tiny, mix, analysis result shows that alloying does not almost occur powder in mechanical milling process.
Fig. 2 is the interface microstructure morphology of the liquid diffusion bonding joint of the test two sheet material samples that obtain, wherein, article two, the position in the middle of dotted line is joint interface, as can be seen from the figure, in joint interface, do not have obvious compound to distribute, joint element distributes very even, and weld seam and mother metal have reached the uniformity of height on structural constituent.
Fig. 3 is the photo of the tensile sample of the test two sheet material samples that obtain, 1 photo for sample before stretching, and 2 photos for sample after stretching, 3 is fracture position; As can be seen from Figure 3 joint can be synchronizeed very large plastic deformation occurs with mother metal, show that joint and mother metal have fabulous plasticity simultaneously, reflect that from the side weld seam is consistent with the height of mother metal composition, fracture occurs in far-end mother metal one side, illustrates through Weld Performance after Thermal Cycle and is better than mother metal; The powder intermediate layer material liquid diffusion bonding GH4169 alloy that adopts embodiment mono-preparation, its joint room temperature percentage elongation can reach more than 50%;
Fig. 4 is the photo before testing three three sample heat treatments that make and after heat treatment, and three, left side sample is the photo before heat treatment, and three, right side sample is the photo after heat treatment; As can be seen from the figure, postwelding does not have obvious intermediate layer residual in workpiece docking site, there is no obvious corrosion behavior simultaneously, illustrates that the wetability of powder intermediate layer of the present invention and quality of connection can meet the demand of production completely.
To adopting the powder intermediate layer material liquid diffusion bonding GH4169 alloy-junction of embodiment mono-preparation to carry out post weld heat treatment, after heat treatment, joint room temperature tensile strength is up to 95.7% of postwelding mother metal, than GH4169 alloy diffusion jointing intensity in other reports, exceed 200～300MPa, joint plasticity still can reach 10%, 650 ℃ of elevated temperature strengths can reach 93.2% of postwelding mother metal, basic suitable with postwelding mother metal elevated temperature strength, show to adopt powder intermediate layer material liquid diffusion bonding GH4169 alloy gained joint prepared by the present invention can coordinate the Technology for Heating Processing of GH4169 alloy itself completely, break GH4169 alloy jointing post weld heat treatment technique in the past and chosen difficulty, joint overall performance is difficult to the limitation guaranteeing, after heat treatment, joint performance is very good, can meet the requirement that Aero-Space butt joint mechanical property reaches postwelding mother metal 90% completely.
Claims (10)
1. for a powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding, it is characterized in that by 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder, being made by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.
2. a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 1, is characterized in that by 51.63% Ni powder, 17.2% Cr powder, 16.5% Fe powder, 4% Si powder, 2% B powder, 5.0% Nb powder, 0.87% Ti powder and 2.8% Mo powder, being made by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.
3. a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 1, is characterized in that by 51.47% Ni powder, 17.0% Cr powder, 16.63% Fe powder, 4% Si powder, 2% B powder, 5.1% Nb powder, 0.91% Ti powder and 2.89% Mo powder, being made by weight percentage for the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding.
4. the method for preparation a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding claimed in claim 1, is characterized in that carrying out according to the following steps for the preparation method of the powder intermediate layer material of GH4169 high temperature alloy liquid diffusion bonding:
One, take by weight percentage 50.5%～52.5% Ni powder, 16.7～17.5% Cr powder, 16.2%～17.5% Fe powder, 4.0～5.0% Si powder, 1.75%～2.2% B powder, 4.7%～5.7% Nb powder, 0.85%～1.05% Ti powder and 2.7%～3.0% Mo powder, be mixed to get alloy powder;
Two, alloy powder step 1 being obtained and abrading-ball are placed in high-energy ball milling tank, vacuumize in backward ball grinder and be filled with argon gas, with the rotating speed of 250～350r/min, ball milling 4～20h, obtains the powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding.
5. a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 4, the quality purity that it is characterized in that described Ni powder, Cr powder, Fe powder, Nb powder, Ti powder and Mo powder is 99%～99.95%.
6. according to a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding described in claim 4 or 5, the quality purity that it is characterized in that described Si powder and B powder is 99%～99.9%.
7. the preparation method of a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 4, while it is characterized in that in step 2 ball milling, ball material mass ratio is (8～20): 1, filler ratio is 45%～55%.
8. the preparation method of a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 7, is characterized in that the ball milling in step 2 is intermittent ball milling, and the every running 0.5～2h of ball mill, suspends 0.5～1h.
9. according to the preparation method of a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding described in claim 7 or 8, it is characterized in that in step 2, with the rotating speed of 270～340r/min, intermittent ball milling 6～18h, ball material mass ratio is (10～18): 1.
10. the preparation method of a kind of powder intermediate layer material for GH4169 high temperature alloy liquid diffusion bonding according to claim 9, it is characterized in that in step 2, with the rotating speed of 280～320r/min, intermittent ball milling 10～15h, ball material mass ratio is (12～16): 1.
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| CN108788438A (en) * | 2018-06-29 | 2018-11-13 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of TLP diffusion welding (DW)s middle layer alloy and its welding method |
| CN113234962A (en) * | 2021-05-12 | 2021-08-10 | 南昌大学 | Plasma cladding modified nickel-based high-temperature alloy coating for repairing surface and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718443A (en) * | 1971-01-22 | 1973-02-27 | Int Nickel Co | Composite metal products |
| CN101486134A (en) * | 2008-01-18 | 2009-07-22 | 中国科学院金属研究所 | Welding material special for GH4169 high-temperature alloy pipe material |
| CN101497953A (en) * | 2008-01-30 | 2009-08-05 | 中国科学院金属研究所 | Central layer alloy for transient liquid phase connection nickel based single crystal high-temperature alloy and preparation |
| CN102251153A (en) * | 2011-07-06 | 2011-11-23 | 西安理工大学 | Interlayer alloy of DD6 nickel-based single crystal high temperature alloy used for transient liquid phase (TLP) bonding and preparation method thereof |
-
2012
- 2012-06-06 CN CN201210184085.4A patent/CN102672163B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718443A (en) * | 1971-01-22 | 1973-02-27 | Int Nickel Co | Composite metal products |
| CN101486134A (en) * | 2008-01-18 | 2009-07-22 | 中国科学院金属研究所 | Welding material special for GH4169 high-temperature alloy pipe material |
| CN101497953A (en) * | 2008-01-30 | 2009-08-05 | 中国科学院金属研究所 | Central layer alloy for transient liquid phase connection nickel based single crystal high-temperature alloy and preparation |
| CN102251153A (en) * | 2011-07-06 | 2011-11-23 | 西安理工大学 | Interlayer alloy of DD6 nickel-based single crystal high temperature alloy used for transient liquid phase (TLP) bonding and preparation method thereof |
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