CN107999991A - High entropy flux-cored wire for titanium-steel MIG welding and preparation method thereof - Google Patents
High entropy flux-cored wire for titanium-steel MIG welding and preparation method thereof Download PDFInfo
- Publication number
- CN107999991A CN107999991A CN201810056773.XA CN201810056773A CN107999991A CN 107999991 A CN107999991 A CN 107999991A CN 201810056773 A CN201810056773 A CN 201810056773A CN 107999991 A CN107999991 A CN 107999991A
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- Prior art keywords
- cored wire
- flux
- high entropy
- welding
- titanium
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/406—Filled tubular wire or rods
Abstract
The invention discloses a kind of high entropy flux-cored wire for titanium steel MIG welding, medicinal powder is prepared by following components by atomic percent, and total percentage is 100%, wherein Fe is that 5 ~ 15%, Ti is that 10% ~ 20%, Co is 18% ~ 25%, Cr is that 20% ~ 35%, Ni is that 21% ~ 35%, Cu is 5% ~ 13%.Skin material uses industrial high purity copper band.Preparation process includes：First, melt and match somebody with somebody foundry 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.Titanium steel MIG welding is carried out using the high entropy flux-cored wire of the present invention, obtains good titanium 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, is related to a kind of high entropy flux-cored wire for titanium-steel MIG welding and its 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 field such as industry and the energy, aerospace, national defence proposes the light-weighted an urgent demand of product.Titanium and titanium alloy are close by its
Excellent performance low, that specific strength is high is spent, important role is played during product is light-weighted.Titanium-steel composite parts
50 ~ 60% of weight equivalent to steel, and improving stock utilization with titanium and other good characteristics of steel at the same time and subtracting
Light construction weight, improves product corrosion resistance, and reducing cost etc. has obvious social effect and economic benefit, has good
Good application development prospect.But steel part is substituted using the composite component of titanium and steel, also to the welding of titanium-steel dissimilar material
Propose strict requirements.
The main method for being presently used for titanium-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 titanium-steel welding dissimilar materials method.But resistance
Weld 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, and extensive use it is similarly subjected to limitation；And fusion welding can not only realize that titanium-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
Weldering can use semi-automatic or Full-automatic welding, have a wide range of application, and have 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 can be used to weld, mother metal fusion penetration
Greatly, welding wire melting rate is fast, and the degree of automation is high.3 protecting effects are good：Due to making protection gas using inert gas, not with molten bath
Metal reacts, and effectively prevent the generation of weld defect.But also inevitably there are change between brittle metal for MIG welderings
Compound layer, causes joint performance bad, limits widely using for MIG welderings.
The content of the invention
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 titanium-steel of MIG welding wires, easily form weld metal zone brittle intermetallic thing and cause to weld
The problem of strength of joint reduces.Carry out the welding of titanium-steel MIG using the high entropy flux-cored wire of the present invention, the chemistry of weld metal into
In the range of the pivot of high-entropy alloy, the structure organization of commissure tends to single bcc or fcc, realizes the height of weld seam for office
Entropy, is easily obtained good titanium-steel welded joint.
The present invention adopts the following technical scheme that realization：
A kind of high entropy flux-cored wire for titanium-steel MIG welding, including medicinal powder and crust.
Medicinal powder is prepared by following components by atomic percent, and total atomic percent is 100%, wherein Fe 5 ~ 15%, Ti
10% ~ 20%, Co 20% ~ 30%, Cr 18% ~ 35%, Ni 20% ~ 35%, Cu 5% ~ 13%；
Skin material uses industrial high purity copper band.
The preparation method of the above-mentioned high entropy flux-cored wire for titanium-steel MIG welding, includes the following steps：
Step 1: configuration foundry alloy
Formed by atomic percent, total atomic percent is 100%, wherein Fe be 5 ~ 15%, Ti be 10% ~ 20%, Co be 20% ~
30%, Cr are that 18% ~ 35%, Ni is that 20% ~ 35%, Cu is 5% ~ 13%；
Above-mentioned atomic percent is converted into mass percent, various high pure metals have been weighed according to mass percent；Will be upper
State load weighted metal material to mix in the ball mill, be compacted into blank；Manufactured blank is melted in vacuum arc furnace ignition
Match somebody with somebody, foundry 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 into.
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 titanium and steel welded joint, it is necessary to which the chemical composition of weld metal is maintained at and to be formed
In the range of the pivot of high-entropy alloy.For the composition characteristic of base metals Ti and Fe to be welded, welding wire selection Ti-Co-Cr-Fe-Ni-
Six pivot high-entropy alloys of Cu.Main cause have it is following some：
1st, the dissolving of the fusing of mother metal and Jin Feng areas mother metal to molten bath is inevitable in welding process, is formed for prevention commissure crisp
Property intermetallic compound, Ti and Fe pivots must be contained in weld seam target component, and dissolubilities of the Ti in weld seam is stronger, thus this
Content of two kinds of elements in welding wire will be less than other pivots, be wrapped up additionally, due to using high purity copper band, 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 Ti have good compatibility, can effectively avoid the production of weld metal zone brittle intermetallic thing
It is raw.
3rd, by adding Ni elements in the alloy of intermediate layer, it not only can infinitely be dissolved with Fe, but also can be with Ti, Co, Cr
Etc. dissolving each other, the addition of Ni can improve the compatibility of weld seam and mother metal, suppress 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
Compound, strength of welded joint are 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
Close, obtained a kind of high entropy flux-cored wire, carrying out titanium-steel MIG using the high entropy flux-cored wire of the present invention welds, and obtains high-quality
Titanium-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.
Present invention design is reasonable, and the high entropy flux-cored wire is easily processed into type, of low cost, the high entropy flux-cored wire operation
Technique is simple, convenient, efficient, adaptability is good, easy to spread, has good market application value.
Brief description of the drawings
Fig. 1 shows carry out MIG weldering schematic diagrames to Q235b/TA2 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.
Embodiment
The specific embodiment of the present invention is described in detail below.
A kind of high entropy flux-cored wire for titanium-steel MIG welding, including medicinal powder and crust.
Medicinal powder is prepared by following components by atomic percent, and total atomic percent is 100%, wherein Fe 5 ~ 15%, Ti
10% ~ 20%, Co 20% ~ 30%, Cr 18% ~ 35%, Ni 20% ~ 35%, Cu 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：
Step 1: molten match somebody with somebody foundry alloy
Formed by atomic percent（It is shown in Table one）, total atomic percent is 100%, by atomic percent be converted into quality hundred
Divide ratio, various high pure metals have been weighed according to mass percent（99.99%）；Above-mentioned metal material is mixed (five in the ball mill
Kilogram powder, Ball-milling Time is in 15min or so), it is stand-by to be compacted into blank；Manufactured blank is melted in vacuum arc furnace ignition
Match somebody with somebody, foundry alloy is made.
Step 2: using vacuum gas-atomized powder technology, after foundry alloy is melted in induction furnace, refine, the gold of fusing
Belong to liquid to pour into insulation crucible, and enter diversion pipe and nozzle, melt flow is atomized by high-pressure gas flow at this time.After atomization
Metal dust, 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 mother metal during welding, the dry extension elongation of welding wire is adjusted, to control the fusing of welding wire fast
Composition of weld line control is being formed the active ingredient scope of high-entropy alloy by degree.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 high entropy flux-cored wire of the four kinds of different sizes obtained using the present invention carries out the welding of Q235b/TA2 titanium alloys, implements
Each pivot content of final alloy is with reference to table two in the weld seam obtained after welding.
Table two, implement the weld metal that finally obtains of four kinds of different-diameter model welding wires each pivot content table (atomic percent
at%)
As shown in Figure 1, implementing welding using the welding wire that specification is φ 1.6mm, φ is obtained according to constituent content in above-mentioned table one
1.6mm high-entropy alloy welding wires, carry out MIG welderings, welding current is limited to 110A-150A, and speed of welding is to Q235b/TA2
15min/cm, preheating temperature are maintained at room temperature, obtain and implement specification in above-mentioned table two as the final high-entropy alloy weld seam of 1.6 types of φ
Component, weld seam transition region flawless, the tensile strength of Q235b/TA2 plumb joints is up to 459 ± 1MPa, and ballistic work is up to 38 ± 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 titanium-
Steel MIG is welded, and obtains good titanium-steel welded joint, the chemical composition of weld metal is in the pivot scope 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
Technical scheme is modified or replaced equivalently, without departure from the spirit and scope of technical scheme, it should all cover the present invention's
In claims.
Claims (4)
1. a kind of high entropy flux-cored wire for titanium-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%, wherein Fe 5 ~ 15%, and Ti 10% ~ 20%, Co 20% ~
30%, Cr 18% ~ 35%, Ni 20% ~ 35%, Cu 5% ~ 13%；
Skin material uses industrial high purity copper band.
2. the preparation method of the high entropy flux-cored wire according to claim 1 for titanium-steel MIG welding, it is characterised in that：
Include the following steps：
Step 1: configuration foundry alloy
Formed by atomic percent, total atomic percent is 100%, wherein Fe be 5 ~ 15%, Ti be 10% ~ 20%, Co be 20% ~
30%, Cr are that 18% ~ 35%, Ni is that 20% ~ 35%, Cu is 5% ~ 13%；
Above-mentioned atomic percent is converted into mass percent, various high pure metals have been weighed according to mass percent；Will be upper
State load weighted metal material to mix in the ball mill, be compacted into blank；Manufactured blank is melted in vacuum arc furnace ignition
Match somebody with somebody, foundry 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 into.
3. the preparation method of the high entropy flux-cored wire according to claim 2 for titanium-steel MIG welding, its feature exist
In：In step 2, powder particle size scope is 85 ~ 95 mesh.
4. the preparation method of the high entropy flux-cored wire according to claim 2 for titanium-steel MIG welding, its feature exist
In：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 1.4, medicinal powder formula：Fe 11.6%、Ti 14.1%、Co 21.9%、Cr 21.1%、Ni 20.2%、Cu
11.1%；
（2）, welding wire φ 1.6, medicinal powder formula：Fe 11.4%、Ti 15.3%、Co 22.2%、Cr 21.4%、Ni 21.5%、Cu
8.2%；
（3）, welding wire φ 2.4, medicinal powder formula：Fe 8.2%、Ti 16.8%、Co 23.2%、Cr 21.9%、Ni 21.6%、Cu
8.3%；
（4）, welding wire φ 3.2, medicinal powder formula：Fe 6.0%、Ti 17.6%、Co 23.9%、Cr 22.1%、Ni 23.2%、Cu
7.2%。
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| CN108998716A (en) * | 2018-07-26 | 2018-12-14 | 江苏理工学院 | A kind of preparation method of electric arc deposited powder cored filament material and its high entropy alloy coating |
| CN111085752A (en) * | 2018-10-24 | 2020-05-01 | 叶均蔚 | Welding method using alloy powder as welding filler |
| CN111590204A (en) * | 2020-06-04 | 2020-08-28 | 华东交通大学 | Method for inhibiting generation of brittle intermetallic compounds of weld joint by laser high-entropy powder filling welding |
| CN111673311A (en) * | 2020-05-19 | 2020-09-18 | 西安理工大学 | Welding wire and method for TA1-Q235B intermediate layer welding and arcing position |
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| CN108998716B (en) * | 2018-07-26 | 2020-01-03 | 江苏理工学院 | Arc deposited cored wire and preparation method of high-entropy alloy coating thereof |
| CN111085752A (en) * | 2018-10-24 | 2020-05-01 | 叶均蔚 | Welding method using alloy powder as welding filler |
| US11511375B2 (en) | 2020-02-24 | 2022-11-29 | Honda Motor Co., Ltd. | Multi component solid solution high-entropy alloys |
| CN111673310B (en) * | 2020-05-19 | 2022-02-22 | 西安理工大学 | Welding wire for TA1-Cu-Q345 transition layer and preparation method |
| CN111673310A (en) * | 2020-05-19 | 2020-09-18 | 西安理工大学 | Welding wire for TA1-Cu-Q345 transition layer, method and arc striking position |
| CN111673311A (en) * | 2020-05-19 | 2020-09-18 | 西安理工大学 | Welding wire and method for TA1-Q235B intermediate layer welding and arcing position |
| CN111673311B (en) * | 2020-05-19 | 2022-02-25 | 西安理工大学 | Welding wire for TA1-Q235B middle layer welding and preparation method |
| CN111590204A (en) * | 2020-06-04 | 2020-08-28 | 华东交通大学 | Method for inhibiting generation of brittle intermetallic compounds of weld joint by laser high-entropy powder filling welding |
| CN111590204B (en) * | 2020-06-04 | 2022-06-03 | 华东交通大学 | Method for inhibiting generation of brittle intermetallic compounds of weld joint by laser high-entropy powder filling welding |
| CN112222678A (en) * | 2020-10-09 | 2021-01-15 | 中国航发北京航空材料研究院 | SiCfHigh-entropy alloy brazing filler metal of/SiBCN composite material and preparation process thereof |
| CN113122764A (en) * | 2021-03-19 | 2021-07-16 | 西安理工大学 | Preparation method of CuCrFeCoNixTi high-entropy alloy thin strip |
| CN113210926A (en) * | 2021-05-28 | 2021-08-06 | 华东交通大学 | Preparation method of multi-principal-element welding wire and high-entropy welding method |
| CN113510405A (en) * | 2021-07-22 | 2021-10-19 | 内蒙古第一机械集团股份有限公司 | Welding wire for welding titanium/steel dissimilar materials and manufacturing process thereof |
| CN115008065A (en) * | 2022-05-19 | 2022-09-06 | 北京工业大学 | Flux-cored wire for high entropy of titanium-steel welding seam and preparation method thereof |
| CN115008065B (en) * | 2022-05-19 | 2023-09-01 | 北京工业大学 | Flux-cored wire for high entropy of titanium-steel weld joint and preparation method thereof |
| CN115229382A (en) * | 2022-07-03 | 2022-10-25 | 西北工业大学 | High-entropy brazing filler metal for brazing composite material and high-temperature alloy, preparation method of high-entropy brazing filler metal and method for brazing high-temperature alloy |
| CN115679179A (en) * | 2022-11-04 | 2023-02-03 | 中国石油大学(华东) | High-entropy alloy and application thereof in titanium/steel composite plate welding |
| CN115679179B (en) * | 2022-11-04 | 2023-09-26 | 中国石油大学(华东) | High-entropy alloy and application thereof in welding of titanium/steel composite plates |
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