CN108161278A - High entropy flux-cored wire for aluminium-steel MIG welding and preparation method thereof - Google Patents
High entropy flux-cored wire for aluminium-steel MIG welding and preparation method thereof Download PDFInfo
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- CN108161278A CN108161278A CN201810056788.6A CN201810056788A CN108161278A CN 108161278 A CN108161278 A CN 108161278A CN 201810056788 A CN201810056788 A CN 201810056788A CN 108161278 A CN108161278 A CN 108161278A
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- cored wire
- high entropy
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- aluminium
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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
- B23K35/3046—Co 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
- B23K35/22—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
- B23K35/304—Ni as the principal constituent with Cr as the next major 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of high entropy flux-cored wire for aluminum steel MIG welding, medicinal powder is prepared by following components by atomic percent, and total percentage is 100%, it be 10% ~ 20%, Co is 20% ~ 30% that wherein Fe, which is 5% ~ 15%, Al, it be 20% ~ 35%, Cu is 5% ~ 13% that Cr, which is 18% ~ 35%, Ni,.Skin material uses industrial high purity copper band.Preparation process includes：First, it melts with master alloy；2nd, using vacuum gas-atomized powder technology, atomized powder is prepared；3rd, high entropy flux-cored wire is made using flux-cored wire forming machine group equipment.Aluminum steel MIG welding is carried out using the high entropy flux-cored wire of the present invention, obtains good aluminum steel welding point, the chemical composition of weld metal is in the range of the pivot of high-entropy alloy, realizes the high entropy of weld seam.Weld seam has excellent intensity and toughness, effectively eliminates weld metal zone brittle intermetallic thing phase, comprehensive mechanical performance is good.
Description
Technical field
The invention belongs to welding technology field, specially a kind of high entropy flux-cored wire and its system for aluminium-steel MIG welding
Preparation Method.
Background technology
In recent years, due to energy problem and the getting worse of environmental problem, work is manufactured in aircraft, automobile, train, ship etc.
The fields such as industry and the energy, aerospace, national defence propose the light-weighted an urgent demand of product.Aluminium and aluminium alloy are close by its
Excellent performance low, that specific strength is high is spent, important role is played during product is light-weighted.Aluminium-steel composite parts
Weight is equivalent to the 50 ~ 60% of steel, and simultaneously with aluminium and other good characteristics of steel, is improving stock utilization and subtracting
Light construction weight improves product corrosion resistance, reduces cost etc. with apparent social effect and economic benefit, has good
Good application development prospect.But steel part is substituted using the composite component of aluminium and steel, also to the welding of aluminium-steel dissimilar material
Propose strict requirements.
The main method for being presently used for aluminium-steel welding dissimilar materials is electric resistance welding, soldering and fusion welding.Electric resistance welding can be with
The preferably thickness of two kinds of storeroom brittle layers of control, is a kind of good aluminium-steel welding dissimilar materials method.But resistance
Weldering has special requirement to the shape and thickness of material, and processing efficiency is low, cannot be widely applied to industrial production；Soldering is due to easy
Weld defect is formed, welding quality is not high, extensively using it is similarly subjected to limit；And fusion welding can not only realize that aluminium-steel is different
The efficient connection of kind material, and with the characteristics of high in machining efficiency, technique is flexible.Most representative, MIG is especially welded with MIG
Semi-automatic or Full-automatic welding may be used in weldering, has a wide range of application, and has the advantages that prominent：1 welding quality is good：Welding process is steady
Fixed, deformation is small, there is good cathode fragmentation.2 welding productivities are high：Big current density welding, base material fusion penetration can be used
Greatly, welding wire melting rate is fast, high degree of automation.3 protecting effects are good：Due to making protection gas using inert gas, not with molten bath
Metal reacts, and effectively prevents the generation of weld defect.But also inevitably there are change between brittle metal for MIG welderings
Nitride layer is closed, causes joint performance bad, limits being widely used for MIG welderings.
Invention content
The present invention organically combines flux-cored wire technology and high-entropy alloy technology, has obtained a kind of high entropy flux-cored wire, mesh
Be to solve in the prior art, during the direct melting welding aluminium-steel of MIG welding wires, easily form weld metal zone brittle intermetallic thing and cause to weld
The problem of strength of joint reduces.Aluminium-steel MIG is carried out using high entropy flux-cored wire prepared by the method for the present invention to weld, weld metal
Chemical composition be in the range of the pivot of high-entropy alloy, the structure organization of commissure tends to single bcc or fcc, realizes
The high entropy of weld seam is easily obtained good aluminium-steel welded joint.
The present invention adopts the following technical scheme that realization：
A kind of high entropy flux-cored wire for aluminium-steel MIG welding, including medicinal powder and crust.
Medicinal powder is prepared by following components by atomic percent, and total atomic percent is 100%, and wherein Fe is 5 ~ 15%, Al
For 10% ~ 20%, Co be 20% ~ 30%, Cr be 18% ~ 35%, Ni be 20% ~ 35%, Cu it is 5% ~ 13%.
Skin material uses industrial high purity copper band.
The preparation method of the above-mentioned high entropy flux-cored wire for aluminium-steel MIG welding, includes the following steps：
It is Step 1: molten with master alloy
Medicinal powder is made of following components by atomic percent, and total atomic percent is 100%, and wherein Fe is for 5% ~ 15%, Al
It is 18% ~ 35%, Ni be 20% ~ 35%, Cu is 5% ~ 13% that 10% ~ 20%, Co, which are 20% ~ 30%, Cr,；
Above-mentioned atomic percent is converted into mass percent, various high pure metals have been weighed according to mass percent；It will claim
Measured metal material mixing in the ball mill, is compacted into blank；Manufactured blank in vacuum arc furnace ignition melt and is matched, is made
Into master alloy；
Step 2: using vacuum gas-atomized powder technology, high entropy atomized powder is prepared, powder particle size is controlled in 80 ~ 100 mesh,
It is preferred that size range is in 85 ~ 95 mesh；
Step 3: using flux-cored wire forming machine group equipment, high entropy flux-cored wire is prepared.
In the medicinal powder configuration process of the present invention, composition and content restriction reason to each chemical element describe such as respectively
Under：
In order to improve the comprehensive mechanical property of aluminum metal and steel welded joint, the chemical composition of weld metal is needed to be maintained to be formed
In the range of the pivot of high-entropy alloy.For the composition characteristic of base metals Al and Fe to be welded, welding wire selection Al-Co-Cr-Fe-Ni-
Six pivot high-entropy alloys of Cu.Main cause has the following：
1st, the fusing of base material and the dissolving in Jin Feng areas base material to molten bath are inevitable in welding process, are formed for prevention commissure crisp
Property intermetallic compound, must be containing Al and Fe pivots in weld seam target component, and dissolubilities of the Al in weld seam is stronger, thus this
Content of two kinds of elements in welding wire will be less than other pivots, and additionally, due to using, high purity copper band wraps up and copper is in commissure
Dissolubility it is preferable, therefore welding wire Cu contents should also be maintained at relatively low level.
2nd, Co and Cr and metal Fe and Al have good compatibility, can effectively avoid the production of weld metal zone brittle intermetallic thing
It is raw.
3rd, it by adding in Ni elements in middle layer alloy, not only can be infinitely dissolved with Fe, but also can be with Al, Co, Cr
Etc. dissolving each other, the addition of Ni can improve the compatibility of weld seam and base material, inhibit the generation of intermetallic compound.Using the high entropy medicine
Core welding wire is welded, and weld metal is still high-entropy alloy, realizes the high entropy of weld seam, is effectively eliminated and is changed between brittle metal
Object is closed, strength of welded joint is higher.
The invention has the advantages that the present invention is innovatively by flux-cored wire technology and the organic knot of high-entropy alloy technology
It closes, has obtained a kind of high entropy flux-cored wire, carrying out aluminium-steel MIG using the high entropy flux-cored wire of the present invention welds, and obtains high-quality
Aluminium-steel welded joint, the chemical composition of weld metal is in the range of the pivot of high-entropy alloy, and the structure organization of commissure becomes
In single bcc or fcc, the high entropy of weld seam is realized.Weld seam has excellent intensity and toughness, effectively eliminates brittleness gold
Compound phase between category, comprehensive mechanical performance are good.
Reasonable design of the present invention, the high entropy flux-cored wire is easily processed into type, of low cost, the high entropy flux-cored wire operation
It is simple for process, conveniently, efficiently, adaptability it is good, easy to spread, have good market application value.
Description of the drawings
Fig. 1 shows carry out MIG weldering schematic diagrames to Q235b/7075 aluminium alloys using high-entropy alloy welding wire prepared by the present invention.
In figure：1- high entropy flux-cored wires, 2- high entropy atomized powders, the weld seam of 3- high entropys.
Specific embodiment
Specific embodiments of the present invention are described in detail below.
A kind of high entropy flux-cored wire for aluminium-steel MIG welding, including medicinal powder and crust.
Medicinal powder is made of following components by atomic percent：Total atomic percent is 100%, and wherein Fe is 5% ~ 15%, Al
For 10% ~ 20%, Co be 20% ~ 30%, Cr be 18% ~ 35%, Ni be 20% ~ 35%, Cu it is 5% ~ 13%.
Skin material uses wide 10 ± 0.1mm, the industrial high purity copper band of 0.5 ± 0.04mm of thickness（99.99%）.
The preparation method of above-mentioned high entropy flux-cored wire, implements according to following steps：
It is Step 1: molten with master alloy
It is formed by atomic percent（It is shown in Table one）, total atomic percent is 100%, and atomic percent is converted into quality percentage
Than having weighed various high pure metals according to mass percent（99.99%）；By above-mentioned metal material mixing in the ball mill（Five is public
Jin powder, Ball-milling Time is in 15min or so）, it is for use to be compacted into blank；Manufactured blank in vacuum arc furnace ignition melt and is matched,
Master alloy is made.
Step 2: using vacuum gas-atomized powder technology, after master alloy is melted in induction furnace, refine, the gold of fusing
Belong to liquid to pour into heat preservation crucible, and enter diversion pipe and nozzle, melt flow is atomized by high-pressure gas flow at this time.After atomization
Metal powder, which is fallen into, to be received in powder tank.Carry out the screening of Atomized metal powder according to powder particle size, powder particle size control 80 ~
100 mesh, preferably size range are in 85 ~ 95 mesh.
Step 3: using flux-cored wire forming machine group equipment, diameter phi 1.4mm, φ 1.6mm, φ 2.4mm, φ are prepared
The high entropy flux-cored wire of 3.2mm.
It is noted that adjusting the fusing amount of base material during welding, the dry extension elongation of welding wire is adjusted, to control the fusing of welding wire fast
Degree is composition of weld line control in the active ingredient range for forming high-entropy alloy.By above-mentioned steps one, two, three, it is prepared
The high entropy flux-cored wire of four kinds of different sizes, specific medicinal powder formula such as table one.
The specific medicinal powder formula of high entropy flux-cored wire (atomic percent at%) of table one, four kind of different size
The welding of Q235b/7075 aluminium alloys is carried out using the high entropy flux-cored wire of four kinds of different sizes that the present invention obtains, is implemented
Each pivot content of final alloy is with reference to table two in the weld seam obtained after welding.
Table two implements each pivot content table (atom hundred of weld metal that four kinds of different-diameter model welding wires finally obtain
Point than at%)
As shown in Figure 1, implementing welding using the welding wire that specification is φ 3.2mm, φ is obtained according to constituent content in above-mentioned table one
The high-entropy alloy welding wire of 3.2mm carries out MIG welderings to Q235b/7075 aluminium alloys, and welding current is limited to 230A-300A, welds
Speed is 15min/cm, and preheating temperature is maintained at room temperature, obtains and implements the specification high entropy conjunction final for 3.2 types of φ in above-mentioned table two
Golden composition of weld line, weld seam transition region flawless, the tensile strength of Q235b/7075 aluminum alloy welding connectors are impacted up to 463 ± 2MPa
Work(is up to 39 ± 1J.
By the result of implementation of the high entropy flux-cored wire of examples detailed above as it can be seen that using the present invention high entropy flux-cored wire carry out aluminium-
Steel MIG is welded, and obtains good aluminium-steel welded joint, the chemical composition of weld metal is in the pivot range of high-entropy alloy
It is interior, realize the high entropy of weld seam.Weld seam has excellent intensity and toughness, effectively eliminates weld metal zone brittle intermetallic thing phase,
Comprehensive mechanical performance is good.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although ginseng
It is described in detail according to the embodiment of the present invention, it will be understood by those of ordinary skill in the art that, to technical scheme of the present invention
It is modified or replaced equivalently, without departure from the spirit and scope of technical scheme of the present invention, should all cover the present invention's
In claims.
Claims (4)
1. a kind of high entropy flux-cored wire for aluminium-steel MIG welding, including medicinal powder and crust, it is characterised in that：Medicinal powder by with
Lower component is prepared by atomic percent, and total atomic percent is 100%, and wherein Fe is that 5 ~ 15%, Al is 10% ~ 20%, Co 20%
It is 20% ~ 35%, Cu is 5% ~ 13% that ~ 30%, Cr, which are 18% ~ 35%, Ni,；
Skin material uses industrial high purity copper band.
2. a kind of preparation method of high entropy flux-cored wire for aluminium-steel MIG welding, it is characterised in that：Include the following steps：
It is Step 1: molten with master alloy
Medicinal powder is made of following components by atomic percent, and total atomic percent is 100%, and wherein Fe is for 5% ~ 15%, Al
It is 18% ~ 35%, Ni be 20% ~ 35%, Cu is 5% ~ 13% that 10% ~ 20%, Co, which are 20% ~ 30%, Cr,；Above-mentioned atomic percent is converted
Into mass percent, various high pure metals have been weighed according to mass percent；Load weighted metal material is mixed in the ball mill
It is even, it is compacted into blank；Manufactured blank in vacuum arc furnace ignition melt and is matched, master alloy is made；
Step 2: using vacuum gas-atomized powder technology, high entropy atomized powder is prepared, powder particle size is controlled in 80 ~ 100 mesh；
Step 3: using flux-cored wire forming machine group equipment, high entropy flux-cored wire is prepared.
3. the preparation method of the high entropy flux-cored wire according to claim 2 for aluminium-steel MIG welding, it is characterised in that：
In step 2, powder particle size ranging from 85 ~ 95 mesh.
4. the preparation method of the high entropy flux-cored wire according to claim 2 for aluminium-steel MIG welding, it is characterised in that：
The high entropy flux-cored wire of following four kinds of different sizes is prepared, specific medicinal powder formula is as follows：
（1）, welding wire φ 1.4mm, medicinal powder formula：Fe 11.6%、Al 15.1%、Co 20.9%、Cr 21.1%、Ni 20.2%、Cu
11.1%；
（2）, welding wire φ 1.6mm, medicinal powder formula：Fe 11.4%、Al 15.3%、Co 22.2%、Cr 21.4%、Ni 20.5%、Cu
9.2%；
（3）, welding wire φ 2.4mm, medicinal powder formula：Fe 8.2%、Al 16.8%、Co 23.2%、Cr 21.9%、Ni 21.6%、Cu
8.3%；
（4）, welding wire φ 3.2mm, medicinal powder formula：Fe 5.0%、Al 18.6%、Co 23.9%、Cr 22.1%、Ni 23.2%、Cu
7.2%。
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919137A (en) * | 2019-11-14 | 2020-03-27 | 西安和光明宸科技有限公司 | Welding method for reducing welding seams |
| CN110961822A (en) * | 2018-10-01 | 2020-04-07 | 林肯环球股份有限公司 | Additive manufacturing using aluminum-containing welding wire |
| CN112222675A (en) * | 2020-09-23 | 2021-01-15 | 中国航发北京航空材料研究院 | High-entropy alloy brazing filler metal and preparation method thereof |
| CN112222674A (en) * | 2020-09-23 | 2021-01-15 | 中国航发北京航空材料研究院 | High-entropy alloy for brazing TiAl and nickel-based high-temperature alloy and preparation method thereof |
| CN113814604A (en) * | 2021-10-12 | 2021-12-21 | 大连理工大学 | Eutectic high-entropy alloy solder for brazing titanium, titanium alloy and stainless steel and preparation method thereof |
| CN113996966A (en) * | 2021-11-02 | 2022-02-01 | 上海龙烁焊材有限公司 | Preparation method and application of aluminum-based light high-entropy alloy metal powder-cored welding wire |
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| CN114083176A (en) * | 2021-11-22 | 2022-02-25 | 辽宁工程技术大学 | High-entropy alloy/ceramic surfacing flux-cored wire and preparation method thereof |
| CN114369786A (en) * | 2022-01-12 | 2022-04-19 | 河南科技大学 | Aluminum-steel composite material and preparation method thereof |
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| US11318566B2 (en) | 2016-08-04 | 2022-05-03 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
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| US11511375B2 (en) | 2020-02-24 | 2022-11-29 | Honda Motor Co., Ltd. | Multi component solid solution high-entropy alloys |
| CN116511757A (en) * | 2023-05-16 | 2023-08-01 | 内蒙古科技大学 | Welding wire material for dissimilar welding of steel and high-entropy alloy and preparation method thereof |
| CN116713597A (en) * | 2023-08-10 | 2023-09-08 | 沈阳信拓技术服务有限公司 | Composite welding method for die-casting aluminum alloy parts with complex structures |
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| CN116511757A (en) * | 2023-05-16 | 2023-08-01 | 内蒙古科技大学 | Welding wire material for dissimilar welding of steel and high-entropy alloy and preparation method thereof |
| CN116511757B (en) * | 2023-05-16 | 2024-04-09 | 内蒙古科技大学 | Welding wire material for dissimilar welding of steel and high-entropy alloy and preparation method thereof |
| CN116713597A (en) * | 2023-08-10 | 2023-09-08 | 沈阳信拓技术服务有限公司 | Composite welding method for die-casting aluminum alloy parts with complex structures |
| CN116713597B (en) * | 2023-08-10 | 2023-10-24 | 沈阳育成鑫成果转化技术服务有限公司 | Composite welding method for die-casting aluminum alloy parts with complex structures |
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