CN109465569A - A kind of high temperature brazing titanium based solder and preparation method - Google Patents
A kind of high temperature brazing titanium based solder and preparation method Download PDFInfo
- Publication number
- CN109465569A CN109465569A CN201811512307.4A CN201811512307A CN109465569A CN 109465569 A CN109465569 A CN 109465569A CN 201811512307 A CN201811512307 A CN 201811512307A CN 109465569 A CN109465569 A CN 109465569A
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- Prior art keywords
- solder
- high temperature
- rolling
- preparation
- titanium based
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
- B23K35/325—Ti as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The present invention relates to a kind of high temperature brazing titanium based solder and preparation method, it is related to a kind of high-temp solder and preparation method.The mass percent of solder chemical component is Ti:77%~90% in the present invention, and Ni:10%~18%, Nb:3%~10%, remaining is inevitable impurity.Solder of the present invention the preparation method is as follows: weigh raw material according to mentioned component, be packed into high vacuum electric arc induction furnace and smelt repeatedly and is cast into alloy pig, the titanium based solder of required thickness is then prepared through specific rolling and heat treatment process.Low Ni and low Nb high temperature brazing titanium based solder in the present invention are while guaranteeing compared with low melting point with excellent plastic deformation ability, it is prepared according to solder deformation behaviour using specific rolling and heat treatment process after smelting, it can guarantee the stability of solder quality, the solder for the different-thickness specification that can be mass-produced, method is simple, production cost low and high temperature is functional, the high temperature brazing suitable for high temperature alloys such as titanium alloy, titanium-aluminium alloys.
Description
Technical field
The present invention relates to a kind of high temperature brazing titanium based solder and preparation methods.
Background technique
Titanium alloy, titanium-aluminium alloy have lower density, high temperature oxidation resistance and good mechanical behavior under high temperature, become system
Make the quality material of Aeronautics and Astronautics, nuclear energy and chemical industry high-temperature component.Current titanium alloy, titanium-aluminium alloy are particularly with possessing essence
Confidential paper, labyrinth manufacture craft in, be brazed to the adaptable of material and structure, there is unique advantage.
Titanium alloy soldering processes specifically include that the sides such as vacuum brazing, high-frequency induction brazing, molten soldering and agitating friction soldering
Method.Vacuum brazing is furnace brazing, carries out whole heating, brazing filler metal melts pair to the weldment of the solder assembled under vacuum conditions
And base material keeps solid-state, liquid solder forms wetting and joint filling under capillary action to base material, strong to material and structure adaptability.
Due to not needing, brazing flux makes connector beauty and comprehensive performance is good.High-frequency induction brazing is the titanium alloy member that will need to connect
It is placed in induction coil, leads to high-frequency alternating current and generate induction field, by the eddy-current heating that is generated in parts surface to molten
Change the technology that solder realizes soldering.Molten soldering be using difference of two kinds of base materials on fusing point, in welding low melting point base material and
Filling solder melts, and high-melting-point base material remains solid-state, interacts with liquid metal, is primarily adapted for use in titanium alloy
With dissimilar material joining.
At present titanium alloy, there are many kinds of titanium-aluminium alloy solders, specifically include that silver-based, aluminium base and titanium-based or titanium zirconium base three
Kind.Silver-base solder is usually used in the lower component of service temperature, which easily forms intermetallic without high hardness in interface area
Object TiAg, but it is larger with the linear expansion coefficient difference of titanium, crackle is also easy to produce under stress, and expensive.Aluminium base
Brazing filler metal fusing point is lower, and soldered fitting high-temperature behavior is bad, limits the high temperature application range of titanium alloy.Ti member in titanium based solder
Element in the high temperature environment can with most metals or it is nonmetallic chemically react, so that brazing filler metal alloy can be promoted by reducing interface
Wetability obtains high strength weld joints.The fusing point of titanium based solder is high, generally at 1000 DEG C or more, to make to be brazed thermal cycle temperature
Degree is lower than base material phase transition temperature, general to reduce fusing point by elements such as addition Zr, Cu, Ni, Be, and improves wettability.It is existing
There is titanium based solder type less, and preparation process is complicated, higher cost.
Article " Brazing high Nb containing TiAl alloy using TiNi-Nb eutectic
Braze alloy " the novel TiNi-Nb solder (Ti- of (Intermetallics, 2012,22 (3): 136-141) research use
40Ni-20Nb (at.%)) soldering TiAl alloy (Ti-45Al-5Nb- (W, B, Y) (at.%)), pass through vacuum arc remelting process
It is cut into slices shape solder after refining ingot with electric spark.The result shows that brazing filler metal fusing point is higher, so that when 1220 DEG C and temperatures above are brazed
There is irregular weld seam in joint.This is because brazing temperature influences meltage of the TiAl alloy matrix element to liquid solder,
Switching performance is caused to decline.Excessively high solder liquidus temperature can formulation to soldering processes and joint performance generate unfavorable work
With, it is therefore necessary to the component of strict control solder, and electric spark slice process is expensive, is unsuitable for producing in batches.
Chinese patent CN 102430874A points out in existing titanium based solder often containing more Cu and Ni element, although
It is to reduce solder liquidus temperature, but it is easy to accelerate titanium alloy eutectoid reaction speed during the brazing process that it, which is acted on, so that in connector
Brittlement phase content is higher and Local enrichment, reduces joint performance.
Chinese patent CN 103286472A propose it is a kind of suitable for titanium alloy, Intermatallic Ti-Al compound be brazed it is low
Cu and Ni content TiZr based alloy solder, Cu and Ni mass percent are respectively 3%~15% and 1%~10%, Ti and Zr matter
Ratio is measured 75% or more, is a kind of low melting point solder.But it needs the elements such as micro addition Si, Co, Fe, Al, Sn, smelting process
Difficulty, and using vacuum extremely it is cold rotation quench method preparation foil, complex process, high production cost, by equipment limit application limitation compared with
Greatly.
Therefore, study that a kind of production cost is low, preparation method is simple, the good novel low Ni of processing performance and low Nb content
High temperature brazing titanium based solder, be suitble to large-scale production, meet the brazing requirements of different materials and component, solder can be expanded and existed
High temperature alloy field purposes is of great significance to the use scope for promoting the high temperature alloys such as titanium alloy, titanium-aluminium alloy.
Summary of the invention
It is poor using temperature low and high temperature environmental performance the purpose of the present invention is to solve conventional solder is used, and wherein pass
System titanium based solder has that expensive, preparation process is complicated, and provides a kind of high temperature easy to process, use scope is wide
Soldering titanium based solder, and corresponding preparation method is provided.
The present invention prepares a kind of high temperature brazing titanium based solder, it is characterised in that the mass percent of each chemical component is
Ti:77%~87%, Ni:10%~18%, Nb:3%~10%, remaining is inevitable impurity.
The preparation method of high temperature brazing titanium based solder as described above, preparation step are as follows:
(1) alloy pig is prepared
It is matched according to chemical component described in claim 1 and carries out raw material weighing；Mixed raw material is packed into the sense of high vacuum electric arc
Answer 4~5 guarantee ingredients of furnace melt back uniform, casting is cooled to alloy pig.
(2) it rolls
Manufactured alloy pig is subjected to the solder that rolling obtains required thickness.
Further, on demand using specific rolling and heat treatment process, the solder of different-thickness specification needed for preparing.Institute
When needing solder thickness smaller, rolling mill practice is in such a way that hot rolling, vacuum annealing and warm-rolling combine.Required solder thickness is less than
1.5mm, hot rolling temperature range are 750 DEG C~900 DEG C, and annealing temperature is 500 DEG C~600 DEG C, and warm-rolling temperature is 350 DEG C~700
℃。
Brazing material of the present invention and preparation method are for high temperature brazings fields such as titanium alloy, titanium-aluminium alloys, for solution
Ni, Cu content are higher and generate a large amount of brittlement phases in certainly existing titanium based solder, consider scale while guaranteeing high-temperature behavior
Production and solder must have good plastic deformation ability, so the present invention selects Ti-Ni-Nb alloy for solder system.
The effect that each element plays in titanium based solder according to the present invention is as follows:
Ni belongs to active beta stable element for titanium alloy, can expand β phase region, and eutectoid reaction occurs with Ti, can
To significantly reduce fusing point, and there is good effect for improving joint high-temperature properties and corrosion resistance by alloying.But Ni
When content is higher, a large amount of weld metal zone brittle intermetallic thing (NiTi, NiTi will form2Deng), so guaranteeing solder in the present invention
Its mass fraction in reasonable control composition proportion is needed while high-temperature behavior.
Nb element is the stable element of β phase region, is infinitely dissolved with Ti element, and Ti element activity can be improved in the addition of Nb, can
Improve the high-temperature behavior of welding point, and the difficulty that the industrial production ingredient for reducing Ti-Ni alloy accurately controls, guarantees alloy
The processing performance of solder can be also promoted while intensity.But Nb too high levels can also be reacted with Ni generates Ni3Change between the metals such as Nb
Close object.Furthermore the addition of Nb can also improve the antioxygenic property of solder.
Ni and Nb content of the invention is lower, and the sum of two element best quality percentages are not higher than 23%, is guaranteeing eutectic
Cost can be effectively reduced while point, while the weld metal zone brittle intermetallic thing generated when soldering is greatly decreased, it can be significant
Improve joint mechanical property.
For the present invention by optimal control brazing filler metal alloy set member ratio, making it still has relatively low liquidus temperature (pricker
Can be lower than by welding temperature by 1150 DEG C, lower than the brazing temperature of the titanium based solders such as Ti-Fe), but it is higher than traditional silver-based, aluminium base solder soldering
Temperature reaches plastic deformation ability-intensity matched well, can successfully pass the titanium that rolling mill practice prepares novel low Ni and low Nb
Base solder.
Since titanium base material is more sensitive to deformation parameters such as temperature, so the present invention is according to involved solder composition alloy
Deformation behaviour reasonably optimizing its plastic working technique, use specific rolling and heat treatment procedure on demand, guaranteeing even tissue
Property simultaneously can be crushed refinement brittlement phase, improve the brittleness of brazing filler metal alloy system, be easy to subsequent processing operations, ensure that solder quality
Stability, can in high volume obtain the solder of different-thickness specification.
To sum up, the present invention reduces production cost by optimization ingredient, guarantees high-temperature behavior, and plastic deformation ability is excellent,
Rolling mill practice production can be met, preparation section is simple, high yield rate, and the quality obtained using specific rolling and heat treatment process is steady
Fixed different size thickness solder, is applicable to various forms connector, conducive to the industrialized production and application of high temperature brazing component.
Detailed description of the invention
Fig. 1 is the electron scanning shape appearance figure of preparation gained titanium based solder alloy pig as-cast structure in embodiment of the present invention 1.
Fig. 2 is the metallographic structure figure of 1mm thickness titanium based solder obtained by warm-rolling in embodiment of the present invention 2.
Specific embodiment
Technical solution of the present invention is not limited to the specific embodiment of act set forth below, further include each specific embodiment it
Between any combination.
Embodiment 1: high temperature brazing in present embodiment is Ti:77%~90% with titanium based solder mass percent,
Ni:10%~18%, Nb:3%~10%, remaining is inevitable impurity.
High temperature brazing titanium based solder in the present embodiment the preparation method is as follows:
(1) alloy pig Ti:77%~87% by mass percentage is prepared, Ni:10%~18%, Nb:3%~10% are carried out
Raw material weighing, mixed raw material loading 4~5 guarantee ingredients of high vacuum electric arc induction furnace melt back are uniform, and casting is cooled to
Alloy pig.
(2) rolling by the alloy pig of system after 850 DEG C~900 DEG C soaking through multistage hot deformation to 1.5mm heavy-gauge sheeting, that is, obtain
Obtain high temperature brazing titanium based solder of the present invention.Fig. 1 is the titanium based solder alloy pig microstructure of present embodiment preparation.By Fig. 1
It can be seen that the cast sturcture obtained after smelting is uniform, it is easy to following process.
Embodiment 2: present embodiment is unlike specific embodiment 1, by alloy pig hot rolling (hot rolling temperature range
It is 750 DEG C~900 DEG C) to vacuum annealing after 2mm (annealing temperature is 500 DEG C~600 DEG C), thick (warm-rolling temperature is warm-rolling to 1mm
350 DEG C~700 DEG C), high temperature brazing titanium based solder of the present invention is obtained through the above special process.Remaining and specific embodiment
1 is identical.Metallographic observation is carried out to the thickness titanium based solder, as shown in Figure 2.As seen from Figure 2, through rolling gained titanium based solder
There are less intermetallic compound precipitation, the shaft-like forms such as even dispersion is distributed, size is smaller and is in, and matrix crystal grain
Refinement, illustrates that solder processing performance is good under this specific process technology, can meet subsequent processing operations.
Embodiment 3: present embodiment obtains hot rolling in specific embodiment 1 unlike specific embodiment 1
1.5mm thickness solder vacuum annealing (annealing temperature be 500 DEG C~600 DEG C), warm-rolling to 0.5mm it is thick (warm-rolling temperature is 350 DEG C~
700 DEG C), high temperature brazing titanium based solder of the present invention is obtained through the above special process.Remaining is identical as specific embodiment 1.
Embodiment 4: present embodiment is unlike specific embodiment 3, to obtain the lesser solder of thickness,
The 0.5mm thickness solder that warm-rolling in specific embodiment 3 is obtained, extremely through vacuum annealing repeatedly and two superimposed or single layer warm-rolling
0.1mm thick (warm-rolling temperature is 350 DEG C~700 DEG C), obtains high temperature brazing titanium based solder of the present invention through the above special process.
Remaining is identical as specific embodiment 3.
Claims (3)
1. a kind of high temperature brazing titanium based solder, it is characterised in that the mass percent of each chemical component is Ti:77%~87%,
Ni:10%~18%, Nb:3%~10%, remaining is inevitable impurity.
2. the preparation method of high temperature brazing titanium based solder according to claim 1, it is characterised in that following preparation step
(1) alloy pig is prepared
It is matched according to chemical component described in claim 1 and carries out raw material weighing；Mixed raw material is packed into high vacuum electric arc induction furnace
4~5 guarantee ingredients of melt back are uniform, and casting is cooled to alloy pig.
(2) it rolls
Manufactured alloy pig is subjected to the solder that rolling obtains required thickness.
3. a kind of preparation method of high temperature brazing titanium based solder according to claim 2, it is characterised in that use on demand
Specific rolling and heat treatment process, the solder of different-thickness specification needed for preparing；When required solder thickness is smaller, rolling mill practice
In such a way that hot rolling, vacuum annealing and warm-rolling combine；Required solder thickness is less than 1.5mm, and hot rolling temperature range is 750 DEG C
~900 DEG C, annealing temperature is 500 DEG C~600 DEG C, and warm-rolling temperature is 350 DEG C~700 DEG C.
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| CN201811512307.4A CN109465569A (en) | 2018-12-11 | 2018-12-11 | A kind of high temperature brazing titanium based solder and preparation method |
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| CN201811512307.4A CN109465569A (en) | 2018-12-11 | 2018-12-11 | A kind of high temperature brazing titanium based solder and preparation method |
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Family
ID=65674985
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539048A (en) * | 2019-08-01 | 2019-12-06 | 航天材料及工艺研究所 | Brazing connection method of rhenium-carbon/carbon composite material and niobium |
| CN110605498A (en) * | 2019-05-14 | 2019-12-24 | 中国航发北京航空材料研究院 | TiNiNbZr high-temperature brazing filler metal for TiAl alloy, preparation method and brazing method thereof |
| CN111438465A (en) * | 2020-05-11 | 2020-07-24 | 中国航发北京航空材料研究院 | Ti-Ni-Nb brazing material of Nb-Si based ultra-high temperature structure material and brazing connection process |
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| US4883640A (en) * | 1988-06-17 | 1989-11-28 | Gte Products Corporation | Titanium-niobium-nickel brazing alloy |
| WO1999058332A1 (en) * | 1998-05-12 | 1999-11-18 | Pacific Coast Technologies | Methods and materials for sealing ceramic to metallic surfaces |
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| CN103567666A (en) * | 2013-11-15 | 2014-02-12 | 中国航空工业集团公司北京航空制造工程研究所 | Strip-shaped brazing filler metal for titanium alloy brazing and Ti2AlNb alloy brazing, preparation method thereof and brazing method |
| CN108857148A (en) * | 2018-07-20 | 2018-11-23 | 北京理工大学 | A kind of electric arc increasing material manufacturing titanium alloy wire materials and its application |
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| US4883640A (en) * | 1988-06-17 | 1989-11-28 | Gte Products Corporation | Titanium-niobium-nickel brazing alloy |
| WO1999058332A1 (en) * | 1998-05-12 | 1999-11-18 | Pacific Coast Technologies | Methods and materials for sealing ceramic to metallic surfaces |
| WO2005007336A1 (en) * | 2003-07-14 | 2005-01-27 | Honeywell International Inc. | Low cost brazes for titanium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605498A (en) * | 2019-05-14 | 2019-12-24 | 中国航发北京航空材料研究院 | TiNiNbZr high-temperature brazing filler metal for TiAl alloy, preparation method and brazing method thereof |
| CN110539048A (en) * | 2019-08-01 | 2019-12-06 | 航天材料及工艺研究所 | Brazing connection method of rhenium-carbon/carbon composite material and niobium |
| CN110539048B (en) * | 2019-08-01 | 2021-08-10 | 航天材料及工艺研究所 | Brazing connection method of rhenium-carbon/carbon composite material and niobium |
| CN111438465A (en) * | 2020-05-11 | 2020-07-24 | 中国航发北京航空材料研究院 | Ti-Ni-Nb brazing material of Nb-Si based ultra-high temperature structure material and brazing connection process |
| CN111438465B (en) * | 2020-05-11 | 2021-12-24 | 中国航发北京航空材料研究院 | Ti-Ni-Nb brazing material of Nb-Si based ultra-high temperature structure material and brazing connection process |
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Application publication date: 20190315 |