CN108544125A - A kind of middle strength aluminum alloy welding material and its application - Google Patents
A kind of middle strength aluminum alloy welding material and its application Download PDFInfo
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- CN108544125A CN108544125A CN201810331681.8A CN201810331681A CN108544125A CN 108544125 A CN108544125 A CN 108544125A CN 201810331681 A CN201810331681 A CN 201810331681A CN 108544125 A CN108544125 A CN 108544125A
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- aluminum alloy
- strength aluminum
- welding material
- welding
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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
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al 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
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
- B23K35/288—Al as the principal constituent with Sn or Zn
Abstract
The invention discloses a kind of middle strength aluminum alloy welding materials, remember that chemical composition group becomes by mass percentage：Mg：5.0 6.50, Mn：0.60 1.30, Zn：≤ 0.90, Cu：≤ 0.20, Fe：≤ 0.30, Si：≤ 0.30, Cr：≤ 0.30, Zr：≤ 0.25, Ti：≤ 0.25, Be：≤ 0.0004, Na：≤ 0.0005%, hydrogen content：≤ 0.08ml/100g Al, remaining is Al and some inevitable impurity elements, wherein single impurity≤0.05, content of impurities≤0.15.The present invention is reasonable, strictly controls component content, pass through the collocation of reasonable, science component, content cooperation, to improve the yield strength and tensile strength of postwelding deposited metal, the yield strength of postwelding deposited metal is set to can reach ~ 165MPa, tensile strength can reach ~ 335MPa, simultaneously can guarantee plasticity, especially suitable for ship ocean engineering, rail traffic, automobile, aerospace field aluminium alloy extrusions welding, the speed-raising of power-assisted ship, high ferro motor-car, automobile, aerospace vehicle.
Description
Technical field
The present invention relates to technical field of welding materials more particularly to a kind of middle strength aluminum alloy welding material and its applications.
Background technology
With the continuous development of China Transportation Industry, the fields such as ship ocean engineering, rail traffic, automobile, aviation
Lightweight becomes a kind of trend and requires, and it is imperative to substitute steel using the lighter aluminium alloy of quality.And in above-mentioned field
In, Al-Mg/Al-Mg-Si/Al-Mg-Zn line aluminium alloys material is made extensively because of the advantages that its is light, intensity is preferable, easily molded
With.The interconnection of aluminum alloy materials, usually uses welding.When selecting welding material, to fully take into account mechanical property,
The factors such as corrosion resistance and buckling performance, therefore be usually all to use 5xxx Welded materials, such as when selecting welding wire
It is generally welded using welding wires such as ER5087, ER5356 and ER5183, Al-Mg/ is welded using these Welded materials
Al-Mg-Si/Al-Mg-Zn line aluminium alloys material disclosure satisfy that corrosion resistance and buckling performance etc. substantially, also could in the past
Meet the requirement of intensity.But with the continuous speed-raising of automobile, ship, aerospace vehicle, the requirement to intensity is also increasingly
Height has been difficult to meet the requirement of intensity using the Welded material of the past trade mark.
The elements such as Mg, Zn, Mn, Zr are intensified element in Welded material, and the elements such as suitable Mg, Zn, Mn, Zr can
To play invigoration effect, the intensity of deposited metal is improved.But when Mg too high levels, corrosion resistance can also decline therewith,
Also easier cracking in process of production；When Mn too high levels, easy aggregation forms coarse compound, reduces the modeling of material
Property, weaken Grain Refinement Effect；Zn too high levels can then increase crackle tendency；And Zr contents are more than 0.25wt%, easily with
Al3Ti is enriched with to form coarse compound, reduces Al after material and welding3Ti and Al3The effect of the crystal grain refinement of Zr and certain journey
The intensity of degree.Other parts element in welding material also needs rationally to control content, such as Fe, Si harmful element, can increase
Add the brittleness of aluminium alloy, is easy to form coarse rigid brittle compound with elements such as Mn, Al, Mg；And hydrogen content and Na contents
Material property can be equally influenced, the lower adverse effect of content is smaller.
In view of the wlding nowadays lacked to obtain the weldment of higher-strength, a kind of new Welded material at
For demand.
Invention content
For the above deficiency, the present invention provides a kind of to obtain the middle strength aluminum alloy welding material of the weldment of higher-strength.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of middle strength aluminum alloy welding material remembers that chemical composition group becomes by mass percentage：Mg：5.0-6.50, Mn：0.60-
1.30 Zn：≤ 0.90, Cu：≤ 0.20, Fe：≤ 0.30, Si：≤ 0.30, Cr：≤ 0.30, Zr：≤ 0.25, Ti：≤ 0.25,
Be：≤ 0.0004, Na：≤ 0.0005%, hydrogen content：≤ 0.08ml/100g Al, remaining is Al and some inevitable impurity
Element, wherein single impurity≤0.05, content of impurities≤0.15.
Further, note chemical composition group becomes by mass percentage：Mg：5.0-5.40, Mn：1.10-1.30 Zn：
0.30-0.60, Cu：0.10-0.20, Fe：0.22-0.30, Si：0.22-0.30, Cr：0.22-0.30, Zr：≤ 0.20, Ti：≤
0.20, Be：≤ 0.0004, Na：≤ 0.0005%, hydrogen content：≤ 0.02ml/100g Al, remaining is inevitable with some for Al
Impurity element, wherein single impurity≤0.05, content of impurities≤0.15.
Further, note chemical composition group becomes by mass percentage：Mg：5.20 Mn：1.20 Zn：0.40, Cu：
0.15, Fe：0.25, Si：0.25, Cr：0.25, Zr：0.15, Ti：0.15, Be：0.0002, Na：0.0002, hydrogen content：
0.02ml/100g Al, remaining is Al and some inevitable impurity elements, wherein single impurity≤0.05, impurity always contain
Amount≤0.15.
Further, note chemical composition group becomes by mass percentage：Mg：5.72 Mn：0.91, Zn：0.45, Zr：
0.13, Fe：0.08, Si：0.04, Ti：0.025, Be：0.0002, Na：0.0002, hydrogen content：0.02ml/100g Al, remaining
For Al and some inevitable impurity elements, wherein single impurity≤0.05, content of impurities≤0.15.
The present invention reasonably controls the content of alloying element.With the welding wires such as common ER5087, ER5356 and ER5183
It compares, slightly increases the content of Mg, Mg elements have primarily served intensified element in aluminium alloy.Mg contents more high intensity more
Greatly, intensity also can be bigger after welding, and removable inhibition crackle tendency, but when Mg too high levels, and corrosion resistance also can be with
Decline, also easier cracking in process of production, therefore rationally to control Mg contents.The content of Mn is improved, Mn is main
Auxiliary element, play the role of reinforcing and crystal grain refinement, when welding can refine the crystal grain of welding region, while control Mn's
Content, when avoiding Mn contents too big, easy aggregation forms coarse compound, reduces the plasticity of material, and reduction crystal grain refinement is made
With.Reasonably Zn contents can slightly improve corrosion resistance, and intensity can also be provided for the alloy of processing hardening type, but Zn contents
It is excessively high also to increase crackle tendency.It adds crystallization imperceptibility that a small amount of Zr can enable aluminum alloy to, improve engineering properties, but Zr
Content is more than 0.25wt%, easily and Al3Ti is enriched with to form coarse compound, reduces Al after material and welding3Ti and Al3The crystalline substance of Zr
The effect of grain refinement and a degree of intensity.Hydrogen content and Na contents adversely affect material property, strictly to control.
Middle strength aluminum alloy welding material provided by the invention is suitable for ship ocean engineering, rail traffic, automobile, aviation boat
The welding of the aluminium alloy extrusions or plank in its field.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention is reasonable, strictly controls component content, is coordinated by the collocation of reasonable, science component, content, to improve weldering
The yield strength and tensile strength of deposited metal afterwards, makes the yield strength of postwelding deposited metal can reach ~ 165MPa, tensile strength
~ 335MPa is can reach, while can guarantee plasticity；
2, it is welded using the present invention, refinement of welded metal promotes hardening constituent to be precipitated, to avoid hot cracking tendency and guarantee
Corrosion resistance；
3, the weldment of high yield strength and tensile strength can be obtained using the present invention, especially suitable for ship ocean engineering,
Rail traffic, automobile, aerospace field aluminium alloy extrusions welding, power-assisted ship, high ferro motor-car, automobile, aerospace
The speed-raising of device.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below.Obviously, described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1
Strength aluminum alloy welding material in being prepared by special process, is specially prepared into welding wire, and middle strength aluminum alloy welding material presses matter
Amount percentage note chemical composition group becomes：Mg：5.12 Mn：0.61, Zn：0.32, Cu：0.15, Fe：0.18, Si：0.18, Cr：
0.16, Zr：0.12, Ti：0.17, Be：0.0002, Na：0.0002, hydrogen content：0.03ml/100g Al, remaining is Al and some
Inevitable impurity element, wherein single impurity≤0.05, content of impurities≤0.15.
The tensile strength of the welding wire of the present embodiment is 361Mpa, elongation percentage 25%.
Embodiment 2
Strength aluminum alloy welding material in being prepared by special process, is specially prepared into welding wire, and middle strength aluminum alloy welding material presses matter
Amount percentage note chemical composition group becomes：Mg：6.45 Mn：1.27 Zn：0.88, Cu：0.18, Fe：0.26, Si：0.28, Cr：
0.22, Zr：0.22, Ti：0.25, Be：0.0004, Na：0.0004, hydrogen content：0.07ml/100g Al, remaining is Al and some
Inevitable impurity element, wherein single impurity≤0.05, content of impurities≤0.15.
The tensile strength of the welding wire of the present embodiment is 368Mpa, elongation percentage 24%.
Embodiment 3
Strength aluminum alloy welding material in being prepared by special process, is specially prepared into welding wire, and middle strength aluminum alloy welding material presses matter
Amount percentage note chemical composition group becomes：Mg：5.0, Mn：1.10 Zn：0.30, Cu：0.10, Fe：0.22, Si：0.22, Cr：
0.22, Zr：0.12, Ti：0.10, Be：0.0002, Na：0.0002, hydrogen content：0.01ml/100g Al, remaining is Al and some
Inevitable impurity element, wherein single impurity≤0.05, content of impurities≤0.15.
The tensile strength of the welding wire of the present embodiment is 365Mpa, elongation percentage 26%.
Embodiment 4
Strength aluminum alloy welding material in being prepared by special process, is specially prepared into welding wire, and middle strength aluminum alloy welding material presses matter
Amount percentage note chemical composition group becomes：Mg：5.40 Mn：1.30 Zn：0.60, Cu：0.20, Fe：0.30, Si：0.30, Cr：
0.30, Zr：0.20, Ti：0.20, Be：0.0004, Na：0.0004, hydrogen content：0.02ml/100g Al, remaining is Al and some
Inevitable impurity element, wherein single impurity≤0.05, content of impurities≤0.15.
The tensile strength of the welding wire of the present embodiment is 363Mpa, elongation percentage 25%.
Embodiment 5
Strength aluminum alloy welding material in being prepared by special process, is specially prepared into welding wire, and middle strength aluminum alloy welding material presses matter
Amount percentage note chemical composition group becomes：Mg：5.72 Mn：0.91, Zn：0.45, Zr：0.13, Fe：0.08, Si：0.04, Ti：
0.025, Be：0.0002, Na：0.0002, hydrogen content：0.02ml/100g Al, remaining is Al and some inevitable impurity
Element, wherein single impurity≤0.05, content of impurities≤0.15.
The tensile strength of the welding wire of the present embodiment is 360Mpa, elongation percentage 24%.
By the welding wire of the embodiment of the present invention 1, embodiment 2, embodiment 3, embodiment 4 and embodiment 5 and commonly
ER5087, ER5183 and ER5356 welding wire are as packing material, using MIG welding procedures of the same race respectively to the 8mm of same batch thickness
5059 aluminium alloy annealed state planks welded, welding point carries out tension test and 180 ° of folding tests respectively（Bending is straight
Diameter is 6t, and t is plate thickness）, the joint mechanical performance of soldering test is as shown in table 1 below.
The corresponding welding point mechanical performance table of 1 each welding wire of table
| Corresponding welding wire | Tensile strength/MPa | Yield strength/MPa | Elongation percentage/% | Welding coefficient | Crooked experiment result |
| Embodiment 1 | 335 | 165 | 25 | 0.94 | Without apparent slight crack |
| Embodiment 2 | 337 | 168 | 24 | 0.94 | Without apparent slight crack |
| Embodiment 3 | 332 | 164 | 25 | 0.93 | Without apparent slight crack |
| Embodiment 4 | 333 | 166 | 26 | 0.94 | Without apparent slight crack |
| Embodiment 5 | 336 | 165 | 25 | 0.94 | Without apparent slight crack |
| ER5087 | 295 | 145 | 25 | 0.83 | Without apparent slight crack |
| ER5183 | 290 | 140 | 25 | 0.81 | Without apparent slight crack |
| ER5356 | 265 | 120 | 26 | 0.74 | Without apparent slight crack |
As known from Table 1, it employs the invention as packing material and carries out Welded, the intensity of welding point is apparently higher than use
The intensity of connector of traditional ER5087, ER5183 and ER5356 welding wire as packing material, other such as elongation percentage, bending examination
It the test results such as tests and also keeps good level.The weldment of high yield strength and tensile strength can be obtained using the present invention,
Especially suitable for ship ocean engineering, rail traffic, automobile, aerospace field aluminium alloy extrusions welding, power-assisted ship,
The speed-raising of high ferro motor-car, automobile, aerospace vehicle.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims
It is accurate.
Claims (5)
1. a kind of middle strength aluminum alloy welding material, which is characterized in that remember that chemical composition group becomes by mass percentage：Mg：5.0-
6.50 Mn：0.60-1.30, Zn：≤ 0.90, Cu：≤ 0.20, Fe：≤ 0.30, Si：≤ 0.30, Cr：≤ 0.30, Zr：≤
0.25, Ti：≤ 0.25, Be：≤ 0.0004, Na：≤ 0.0005%, hydrogen content：≤ 0.08ml/100g Al, remaining is Al and one
A little inevitable impurity elements, wherein single impurity≤0.05, content of impurities≤0.15.
2. middle strength aluminum alloy welding material according to claim 1, which is characterized in that remember chemical composition by mass percentage
Group becomes：Mg：5.0-5.40, Mn：1.10-1.30 Zn：0.30-0.60, Cu：0.10-0.20, Fe：0.22-0.30, Si：
0.22-0.30, Cr：0.22-0.30, Zr：≤ 0.20, Ti：≤ 0.20, Be：≤ 0.0004, Na：≤ 0.0005%, hydrogen content：≤
0.02ml/100g Al, remaining is Al and some inevitable impurity elements, wherein single impurity≤0.05, impurity always contain
Amount≤0.15.
3. middle strength aluminum alloy welding material according to claim 1, which is characterized in that remember chemical composition by mass percentage
Group becomes：Mg：5.20 Mn：1.20 Zn：0.40, Cu：0.15, Fe：0.25, Si：0.25, Cr：0.25, Zr：0.15, Ti：
0.15, Be：0.0002, Na：0.0002, hydrogen content：0.02ml/100g Al, remaining is Al and some inevitable impurity members
Element, wherein single impurity≤0.05, content of impurities≤0.15.
4. middle strength aluminum alloy welding material according to claim 1, which is characterized in that remember chemical composition by mass percentage
Group becomes：Mg：5.72 Mn：0.91, Zn：0.45, Zr：0.13, Fe：0.08, Si：0.04, Ti：0.025, Be：0.0002, Na：
0.0002, hydrogen content：0.02ml/100g Al, remaining is Al and some inevitable impurity elements, wherein single impurity≤
0.05, content of impurities≤0.15.
5. according to strength aluminum alloy welding material in claim 1-4 any one of them in ship ocean engineering, rail traffic, vapour
Application in vehicle, the aluminium alloy extrusions of aerospace field or plank welding.
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| CN201810331681.8A CN108544125A (en) | 2018-04-13 | 2018-04-13 | A kind of middle strength aluminum alloy welding material and its application |
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| CN201810331681.8A CN108544125A (en) | 2018-04-13 | 2018-04-13 | A kind of middle strength aluminum alloy welding material and its application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112875A (en) * | 2019-12-31 | 2020-05-08 | 上海交通大学 | Containing TiB2Granular aluminum alloy welding wire and preparation method thereof |
| CN112440027A (en) * | 2020-11-20 | 2021-03-05 | 迈特李新材料(深圳)有限公司 | Aluminum-based composite material welding wire for electric arc additive manufacturing and preparation method thereof |
| CN113210928A (en) * | 2021-05-11 | 2021-08-06 | 北京科技大学 | Novel Al-Mg-Zn aluminum alloy welding wire and preparation process thereof |
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| CN112440027B (en) * | 2020-11-20 | 2021-11-12 | 迈特李新材料(深圳)有限公司 | Aluminum-based composite material welding wire for electric arc additive manufacturing and preparation method thereof |
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