CN108907503A - It is a kind of for welding the amorphous state high-entropy alloy solder and preparation method thereof of tantalum and stainless steel - Google Patents
It is a kind of for welding the amorphous state high-entropy alloy solder and preparation method thereof of tantalum and stainless steel Download PDFInfo
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- CN108907503A CN108907503A CN201811015051.6A CN201811015051A CN108907503A CN 108907503 A CN108907503 A CN 108907503A CN 201811015051 A CN201811015051 A CN 201811015051A CN 108907503 A CN108907503 A CN 108907503A
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- tantalum
- amorphous state
- entropy alloy
- welding
- state high
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Classifications
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- 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0233—Sheets, foils
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of for welding the amorphous state high-entropy alloy solder and preparation method thereof of tantalum and stainless steel, which is grouped as by the group of following molar percentage：7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~8.0%Zr, 2.5%~4.5%B, remaining be Ni.Its fusing point is between 975~1030 DEG C.High-performance amorphous state high-entropy alloy solder of the invention has excellent intensity, toughness and corrosion resisting property, is not easy to form weld metal zone brittle intermetallic thing phase, is easily obtained high-performance tantalum/mild steel brazed joint；The wetability of the high-performance amorphous alloy solder and heterogeneous base material is good, and brazing operation technique is simple, convenience and high-efficiency, good to soldering processes adaptability, and process is easy to control and realize automation, promotes convenient for engineering.
Description
Technical field
The invention belongs to technical field of welding materials, are related to a kind of for welding the amorphous state high-entropy alloy of tantalum and stainless steel
Solder and preparation method thereof.
Background technique
Technical pure tantalum Ta1 has excellent high-temperature behavior, high corrosion resistance, higher ductility, in chemical industry, electricity
The fields such as son, medical treatment and atomic energy industry are widely used.But as rare precious metal, tantalum is often used in the form of steel construction lining.
This tantalum cladding low-carbon steel composites structure has both the performance advantage of tantalum and steel, but its preparation and use process are inevitably related to
To the Welding Problems of tantalum and steel.
Currently, having electron beam welding, argon arc welding, heliarc welding etc. about tantalum/steel welding method both at home and abroad.The fusing point of tantalum is up to
2992 DEG C, be refractory metal, tantalum not yet melts in above-mentioned fusion welding process and steel melts already, causes welding pool to deviate, sternly
Ghost image rings welding quality；Meanwhile the chemical melting of tantalum and stainless steel is poor, is also easy to produce a large amount of Fe2The brittle metals such as Ta, TaC
Between compound, cause welding joint mechanical property to decline.
In order to realize effective connection of tantalum and stainless steel, first need to avoid fusion welding to improve weldering using method for welding
Quality is connect, second needs to select suitable welding material, inhibits the formation of weld metal zone brittle intermetallic thing, lifting sub performance.
Summary of the invention
The purpose of the present invention is to provide a kind of for welding the amorphous state high-entropy alloy solder and its system of tantalum and stainless steel
Preparation Method easily forms hard crisp intermetallic compound and causes to crack, is not easy to obtain high-performance to solve existing welding method
The problem of weldment.
The present invention uses following technical scheme to achieve the above object：
It is a kind of for welding the amorphous state high-entropy alloy solder of tantalum and stainless steel, by following molar percentage group be grouped
At：7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~8.0%Zr, 2.5%~4.5%B,
Remaining is Ni.
The amorphous state high-entropy alloy solder fusing point is in 975~1030 DEG C of ranges.
A kind of preparation method of amorphous state high-entropy alloy solder, includes the following steps：
Step 1 matches master alloy using vacuum arc furnace ignition is molten：
By mole composition, 7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~
8.0%Zr, 2.5%~4.5%B, remaining be Ni, be converted into mass percent and weigh various high pure metals, in vacuum arc furnace ignition
In melt match solder master alloy；
The mother alloy melt that step 1 is melted is prepared by rapid solidification with a thickness of 50~80 μm by step 2, wide by 6
~8mm, the amorphous state high-entropy alloy foil of long 1~2m.
The beneficial effects of the invention are as follows：High-performance amorphous state high-entropy alloy solder of the invention has excellent intensity, tough
Property and corrosion resisting property, are not easy to form weld metal zone brittle intermetallic thing phase, are easily obtained high-performance tantalum/mild steel brazed joint；The height
Performance amorphous alloy solder and the wetability of heterogeneous base material are good, and brazing operation technique is simple, convenience and high-efficiency, adapt to soldering processes
Property it is good, process be easy to control and realize automation, convenient for engineering promote.
Specific embodiment
Below in conjunction with the embodiment of the present invention, clear, complete elaboration is carried out to technical solution of the present invention.
The amorphous brazing filler metal for being used to be brazed technical pure tantalum and mild steel of the invention, is made of following molar percentage：7.0%
~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~8.0%Zr, 2.5%~4.5%B, remaining is
Ni.The solder category high-entropy alloy, rapid solidification product are amorphous state foil.By welding process, the brazed seam gold of formation
Belong to for the crystalline state high-entropy alloy of the pivots such as Ni-Fe-Si-Zr-Cr composition.Above-mentioned more pivot amorphous high-entropy alloy solder postweldings are formed
Brazed seam substantially eliminate weld metal zone brittle intermetallic thing, joint mechanical property is higher.
In solder ingredient of the invention, composition and content restriction reason to each chemical element are described below respectively：
In order to improve the mechanical property of tantalum Yu steel brazed joint, the chemical component for needing to obtain brazed seam metal is in form height
Within the pivot content range of entropy alloy.For the composition characteristic of specific base metals tantalum and steel to be welded, alloy Principal variables selection Ni-
Five pivot alloy of Fe-Si-Zr-Cr.Main cause has at 4 points：1. the fusing of base material and the area Jin Feng base material are to molten in brazing process
Dissolution in pond is inevitable, generates weld metal zone brittle intermetallic thing for prevention weld seam, must contain Fe and Ta in weld seam target component；
2. Zr and Ni and active metal Ta has good compatibility, weld metal zone brittle intermetallic thing can be effectively suppressed with it and generate；3. leading to
Addition B, Si element in solder is crossed, one is reduces fusing point, and two be activation striping；4. the addition of Cr can effectively improve the molten of solder
It with compatibility, formability and brazing filler metal intensity, can also improve the fusion character of weld seam and steel, improve brazing filler metal interfacial combined function.
The high entropy solder foil of amorphous state used in the method for the present invention, preparation method follow the steps below to implement：
Step 1 matches master alloy using vacuum arc furnace ignition is molten：
By mole composition, 7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~
8.0%Zr, 2.5%~4.5%B, remaining is Ni.It is converted into mass percent and weighs various high pure metals, in vacuum arc furnace ignition
In melt match solder master alloy.
The mother alloy melt that upper step is melted is prepared by rapid solidification with a thickness of 50~80 μm by step 2, wide about
6~8mm is about the amorphous state high-entropy alloy foil of 1~2m.The amorphous state high-entropy alloy foil has excellent intensity, toughness
And corrosion resisting property, and have excellent moldability.
Tantalum/steel dissimilar metal is welded using the above-mentioned amorphous alloy solder foil being prepared.Brazed joint
In assembly, first foil is placed between the interface to be welded of tantalum and steel to be welded, then according to conventional vacuum method for welding to assembly
The connector got well heated, is kept the temperature and cooled and solidified, to realize the brazing filler metal of tantalum/steel.
Table 1 is the solder composition proportion table of four embodiments of the invention
Embodiment 1
According to the molar percentage of embodiment 1 in table 1, match master alloy with high pure metal is molten.It prepares and walks according to above-mentioned solder
It is rapid to implement, about 60 μm of the amorphous alloy solder foil thickness of preparation.It is low with Q235 to tantalum Ta1 using the amorphous alloy solder foil
Carbon steel carries out furnace brazing, 1070 DEG C of brazing temperature, keeps the temperature 5min, and the shear strength for obtaining connector is 213.0MPa.
Embodiment 2
According to the molar percentage in embodiment 2 in table 1, match master alloy with high pure metal is molten.It is prepared according to above-mentioned solder
Step is implemented, and thick about 55 μm of state amorphous alloy solder foil is prepared.Using the amorphous alloy solder foil, to tantalum Ta1 with
Q235 mild steel carries out furnace brazing, 1080 DEG C of brazing temperature, keeps the temperature 5min, and the shear strength for obtaining connector is 220.0MPa.
Embodiment 3
According to the molar percentage in embodiment 3 in table 1, match master alloy with high pure metal is molten.It is prepared according to above-mentioned solder
Step is implemented, and thick about 80 μm of state amorphous alloy solder foil is prepared.Using the amorphous alloy solder foil, to tantalum Ta1 with
Q345 carries out vacuum brazing, 1065 DEG C of brazing temperature, keeps the temperature 5min, and the shear strength for obtaining connector is 201.0MPa.
Embodiment 4
According to the molar percentage in embodiment 4 in table 1, match master alloy with high pure metal is molten.It is prepared according to above-mentioned solder
Step is implemented, and thick about 70 μm of state amorphous alloy solder foil is prepared.Using the amorphous alloy solder foil, to tantalum Ta1 with
Q345 steel carries out furnace brazing, 1080 DEG C of brazing temperature, keeps the temperature 5min, and the shear strength for obtaining connector is 203.0MPa.
In conclusion amorphous state high-entropy alloy solder fusing point of the invention, in 975~1030 DEG C of ranges, brazing temperature is lower than
The grain coarsening temperature of steel, brazed joint performance are higher.Solder flexibility is good, easy to process and assembly；Welding when with tantalum and
The wetability of steel is good, brazed seam corrosion resistance is good, and joint mechanical property significantly improves；This kind of amorphous state high-entropy alloy solder
Preparation process is simple, low manufacture cost, convenient for promoting.Tantalum/stainless is carried out using amorphous state high-entropy alloy solder foil of the invention
The vacuum brazing of steel, soldering processes are simple, easy to operate.
The above is present pre-ferred embodiments, for the ordinary skill in the art, according to the present invention
Introduction, in the case where not departing from the principle of the present invention and spirit, changes, modifications, replacement and change that embodiment is carried out
Type is still fallen within protection scope of the present invention.
Claims (3)
1. a kind of for welding the amorphous state high-entropy alloy solder of tantalum and stainless steel, which is characterized in that by following molar percentage
Group be grouped as：7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~8.0%Zr, 2.5%
~4.5%B, remaining be Ni.
2. a kind of for welding the amorphous state high-entropy alloy solder of tantalum and stainless steel, which is characterized in that the amorphous state high-entropy alloy
Brazing filler metal fusing point is between 975~1030 DEG C.
3. a kind of preparation method of the amorphous state high-entropy alloy solder as described in claim 1-2 is any, which is characterized in that including
Following steps：
Step 1 matches master alloy using vacuum arc furnace ignition is molten：
By mole composition, 7.0%~9.0%Cr, 5.0%~8.0%Si, 5.0%~7.0%Fe, 6.0%~
8.0%Zr, 2.5%~4.5%B, remaining be Ni, be converted into mass percent and weigh various high pure metals, in vacuum arc furnace ignition
In melt match solder master alloy；
The mother alloy melt that step 1 is melted is prepared by rapid solidification with a thickness of 50~80 μm by step 2, wide by 6~
8mm, the amorphous state high-entropy alloy foil of long 1~2m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015051.6A CN108907503A (en) | 2018-08-31 | 2018-08-31 | It is a kind of for welding the amorphous state high-entropy alloy solder and preparation method thereof of tantalum and stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015051.6A CN108907503A (en) | 2018-08-31 | 2018-08-31 | It is a kind of for welding the amorphous state high-entropy alloy solder and preparation method thereof of tantalum and stainless steel |
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| CN108907503A true CN108907503A (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421261A (en) * | 2019-01-10 | 2020-07-17 | 天津大学 | High-entropy alloy solder for electronic packaging assembly brazing and preparation method thereof |
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|---|---|---|---|---|
| CN101590574A (en) * | 2009-06-29 | 2009-12-02 | 西安理工大学 | Be used to weld TA2 and 0Cr18Ni9Ti high-entropy alloy solder and preparation method thereof |
| CN103737197A (en) * | 2013-10-17 | 2014-04-23 | 西安理工大学 | Amorphous alloy brazing filler metal for welding TA series titanium and stainless steel and preparation method of amorphous alloy brazing filler metal |
| CN104480412A (en) * | 2014-12-04 | 2015-04-01 | 西安理工大学 | Amorphous high-entropy alloy solder for braze-welding tantalum and steel and preparation method |
-
2018
- 2018-08-31 CN CN201811015051.6A patent/CN108907503A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590574A (en) * | 2009-06-29 | 2009-12-02 | 西安理工大学 | Be used to weld TA2 and 0Cr18Ni9Ti high-entropy alloy solder and preparation method thereof |
| CN103737197A (en) * | 2013-10-17 | 2014-04-23 | 西安理工大学 | Amorphous alloy brazing filler metal for welding TA series titanium and stainless steel and preparation method of amorphous alloy brazing filler metal |
| CN104480412A (en) * | 2014-12-04 | 2015-04-01 | 西安理工大学 | Amorphous high-entropy alloy solder for braze-welding tantalum and steel and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421261A (en) * | 2019-01-10 | 2020-07-17 | 天津大学 | High-entropy alloy solder for electronic packaging assembly brazing and preparation method thereof |
| CN111421261B (en) * | 2019-01-10 | 2022-03-11 | 天津大学 | High-entropy alloy solder for electronic packaging assembly brazing and preparation method thereof |
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Application publication date: 20181130 |
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