CN101758329A - Stirring friction welding method for improving aluminum copper dissimilar metal connection intensity - Google Patents
Stirring friction welding method for improving aluminum copper dissimilar metal connection intensity Download PDFInfo
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- CN101758329A CN101758329A CN200810230080A CN200810230080A CN101758329A CN 101758329 A CN101758329 A CN 101758329A CN 200810230080 A CN200810230080 A CN 200810230080A CN 200810230080 A CN200810230080 A CN 200810230080A CN 101758329 A CN101758329 A CN 101758329A
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- Prior art keywords
- dissimilar metal
- welding
- aluminum copper
- welding method
- metal connection
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- 238000003466 welding Methods 0.000 title claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 21
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 title claims abstract description 17
- 239000010949 copper Substances 0.000 claims description 51
- 229910052782 aluminium Inorganic materials 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 238000005476 soldering Methods 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 description 9
- 238000007689 inspection Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 241000538562 Banjos Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a stirring friction welding method for improving the aluminum copper dissimilar metal connection intensity. The stirring friction welding is carried out on aluminum copper dissimilar metal plates under the condition of bias placement of welding tools, the flowability of the materials can be improved, and the aluminum copper connection intensity can be improved.
Description
Technical field
The present invention relates to metal material, a kind of friction stir welding method that improves aluminum copper dissimilar metal connection intensity is provided especially, be applicable to the connection of aluminum copper dissimilar metal sheet material.
Background technology
Cu and Al have extensive use in electronics, refrigeration and power transmission and transformation industry.Though the heat conduction of Al, electric conductivity be a little less than Cu, the light weight of Al, low price.Consider the composite factors such as conduction, thermal conductivity, density and price of Al and Cu, under the prerequisite that satisfies conduction, heat conductivility, at least can save about Master Cost more than 50% with Al replaced C u, therefore replacing Cu with Al can significantly reduce material cost, has high economic benefit.
With Al instead of part Cu finished parts, make that high-quality interconnection technique becomes the key that realizes target between Al and the Cu.Yet owing to have very big chemistry, physics and mechanical property difference between Al and the Cu, traditional welding process is difficult to realize that the zero defect of Al/Cu connects.In addition, compound not only reduces the electric conductivity of material between the Al-Cu brittle metal that generates in the welding process, and makes strength of joint and plasticity not reach requirement, thereby traditional welding process can't satisfy Al/Cu welding demand.Friction welding (FW), flash welding and cold welding technology are generally adopted in the connection of Al/Cu at present, though can the good Al/Cu plate banjo fixing butt jointing of obtained performance, but these technologies all exist production cost height, inefficient deficiency, and wherein also there is the huge problem of noise in flash welding.And joint geometry and size are also owing to being subjected to the welding procedure own characteristic to be subjected to bigger restriction, and be powerless for large-size workpiece, thereby can not satisfy the application demand in the actual production fully, limited the extensive use of Al/Cu connector.
Friction stir welding is Britain's institute of welding in a kind of novel solid phase interconnection technique that relies on mechanical force and frictional heat effect to realize welding of invention in 1991, for the welding of dissimilar metal provides may.Yet the friction stir welding of existing Al/Cu dissimilar metal studies show that, because Al and Cu hardness and rheological property exist than big-difference, adopt the Al/Cu joint of conventional friction stir welding technology welding often to have tunnel type defective (Materials Research Innovations, Vol.2, No.3 (1998) pp.150-163), can't obtain high-quality Al/Cu joint.
Summary of the invention
The object of the present invention is to provide a kind of friction stir welding method that improves aluminum copper dissimilar metal connection intensity, be applicable to the connection of large scale aluminum copper dissimilar metal sheet material.
The invention provides a kind of friction stir welding method that improves aluminum copper dissimilar metal connection intensity, can improve the flowability of material, improve the aluminum bronze bond strength.
The friction stir welding method that improves aluminum copper dissimilar metal connection intensity provided by the invention, described biasing are meant that the axis of soldering appliance is offset certain distance with respect to the aluminum bronze plate seam to both sides.
The friction stir welding method that improves aluminum copper dissimilar metal connection intensity provided by the invention, described soldering appliance amount of bias is in 0.1～0.5 times of soldering appliance mixing needle diameter.
The friction stir welding method that improves aluminum copper dissimilar metal connection intensity provided by the invention, described soldering appliance biased direction are in aluminium sheet or copper coin one side.
The present invention proposes a new friction stir welding method, under the condition of soldering appliance, carry out the agitating friction welding with respect to the biasing of Al/Cu plate seam, the main metal that rheology takes place is Al or Cu in welding process like this, overcome owing to Al and the big plastic deformation inhomogeneities that causes of Cu rheological property difference, greatly reduced weld defect.
Technology of the present invention can obviously be improved the solderability of Al/Cu dissimilar metal, reduces weld defect, improves the intensity of Al/Cu dissimilar metal joint.Therefore, this new welding procedure scheme is having wide industrial promotion prospect aspect the connection Al/Cu dissimilar metal.
The specific embodiment
Embodiment 1
Use the mixing needle of diameter 8mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Al lateral deviation, amount of bias 3.5mm, instrument rotating speed 800r/min, speed of welding 100mm/min.Macroscopic view and micro show that face of weld is smoother, the interior solid zero defect.Stretching experiment shows that joint breaking occurs in the Al side, does not ftracture when the Al/Cu junction stretches.Crooked above 120 °, joint does not ftracture.
Comparative example 1
Use the mixing needle of diameter 8mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 800r/min, speed of welding 100mm/min.The microstructure inspection shows that obvious groove appears in face of weld, and Al does not produce with Cu and is connected.
Embodiment 2
Use the mixing needle of diameter 5mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Cu lateral deviation, amount of bias 2.5mm, instrument rotating speed 1000r/min, speed of welding 100mm/min.The microstructure inspection shows that face of weld is smoother, the interior solid zero defect.Stretching experiment shows that fracture occurs in the Al side, does not ftracture when the Al/Cu junction stretches.
Comparative example 2
Use the mixing needle of diameter 5mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 1000r/min, speed of welding 100mm/min.The microstructure inspection shows that obvious groove appears in face of weld, and Al does not produce with Cu and is connected.
Embodiment 3
Use the mixing needle of diameter 8mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Al lateral deviation, amount of bias 1mm, instrument rotating speed 1000r/min, speed of welding 100mm/min.The microstructure inspection shows that face of weld is smoother, the interior solid zero defect.Stretching experiment shows that fracture occurs in the Al side, does not ftracture when the Al/Cu junction stretches.
Comparative example 3
Use the mixing needle of diameter 8mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 1000r/min, speed of welding 100mm/min.The microstructure inspection shows that the tunnel type defective appears in weld seam inside, and stretching experiment shows that Al and Cu do not have bonding strength.
Embodiment 4
Use the mixing needle of diameter 5mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Cu lateral deviation, amount of bias 0.5mm, instrument rotating speed 600r/min, speed of welding 100mm/min.The microstructure inspection shows that face of weld is smoother, the interior solid zero defect.Stretching experiment shows that fracture occurs in the Al side, does not ftracture when the Al/Cu junction stretches.
Comparative example 4
Use the mixing needle of diameter 5mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 600r/min, speed of welding 100mm/min.The microstructure inspection shows that there is the micropore weld seam inside, and junction cracking and the intensity of Al and Cu are low.
Embodiment 5
Use the mixing needle of diameter 3mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Al lateral deviation, amount of bias 0.3mm, instrument rotating speed 1000r/min, speed of welding 100mm/min.The face of weld quality is good.The microstructure inspection shows, the interior solid zero defect.Stretching experiment shows that fracture occurs in the Al side, does not ftracture when the Al/Cu junction stretches.Do not ftracture in flexible about 160 ° of junctions
Comparative example 5
Use the mixing needle of diameter 3mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 1200r/min, speed of welding 100mm/min.Microstructure shows that there is the tunnel type defective weld seam inside, and stretching experiment shows that Al and Cu bond strength are extremely low.
Embodiment 6
Use the mixing needle of diameter 3mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is put to the Cu lateral deviation, amount of bias 1.5mm, instrument rotating speed 1200r/min, speed of welding 100mm/min.The face of weld quality is good.The microstructure inspection shows, the interior solid zero defect.Stretching experiment shows that fracture occurs in the Al side, does not ftracture when the Al/Cu junction stretches.Do not ftracture in flexible about 160 ° of junctions.
Comparative example 6
Use the mixing needle of diameter 3mm that Al and Cu plate are carried out the agitating friction welding, soldering appliance is not setovered, instrument rotating speed 1000r/min, speed of welding 100mm/min.Groove appears in face of weld.Al does not realize being connected with Cu.
Claims (3)
1. a friction stir welding method that improves aluminum copper dissimilar metal connection intensity is characterized in that: under the soldering appliance bias condition aluminum copper dissimilar alloy sheets is carried out the agitating friction welding.
2. a kind of friction stir welding method that improves aluminum copper dissimilar metal connection intensity as claimed in claim 1, it is characterized in that: described soldering appliance offset or dish is mixing needle axis and aluminum bronze seam distance, and its value is 0.1～0.5 times of soldering appliance mixing needle diameter.
3. a kind of friction stir welding method that improves aluminum copper dissimilar metal connection intensity as claimed in claim 1 is characterized in that: described soldering appliance biased direction is in aluminium sheet or copper coin one side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102300804A CN101758329B (en) | 2008-12-24 | 2008-12-24 | Stirring friction welding method for improving aluminum copper dissimilar metal connection intensity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102300804A CN101758329B (en) | 2008-12-24 | 2008-12-24 | Stirring friction welding method for improving aluminum copper dissimilar metal connection intensity |
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| Publication Number | Publication Date |
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| CN101758329A true CN101758329A (en) | 2010-06-30 |
| CN101758329B CN101758329B (en) | 2012-01-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794562A (en) * | 2012-08-24 | 2012-11-28 | 北京科技大学 | Reacting friction stir welding method applicable for connecting aluminum alloy to copper alloy |
| CN105108259A (en) * | 2015-07-10 | 2015-12-02 | 西北矿冶研究院 | Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head |
| CN111112824A (en) * | 2020-01-13 | 2020-05-08 | 重庆科技学院 | Heterogeneous metal friction stir welding method |
| CN111151865A (en) * | 2020-01-13 | 2020-05-15 | 重庆科技学院 | Heterogeneous metal friction stir welding system |
| CN112894123A (en) * | 2021-01-29 | 2021-06-04 | 华南理工大学 | Friction stir welding method for aluminum-copper dissimilar metal |
| CN114289848A (en) * | 2021-12-10 | 2022-04-08 | 中国电子科技集团公司第二十九研究所 | Method for connecting aluminum-based composite material and aluminum alloy |
-
2008
- 2008-12-24 CN CN2008102300804A patent/CN101758329B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794562A (en) * | 2012-08-24 | 2012-11-28 | 北京科技大学 | Reacting friction stir welding method applicable for connecting aluminum alloy to copper alloy |
| CN102794562B (en) * | 2012-08-24 | 2014-12-10 | 北京科技大学 | Reacting friction stir welding method applicable for connecting aluminum alloy to copper alloy |
| CN105108259A (en) * | 2015-07-10 | 2015-12-02 | 西北矿冶研究院 | Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head |
| CN111112824A (en) * | 2020-01-13 | 2020-05-08 | 重庆科技学院 | Heterogeneous metal friction stir welding method |
| CN111151865A (en) * | 2020-01-13 | 2020-05-15 | 重庆科技学院 | Heterogeneous metal friction stir welding system |
| CN111112824B (en) * | 2020-01-13 | 2022-03-01 | 重庆科技学院 | Heterogeneous metal friction stir welding method |
| CN111151865B (en) * | 2020-01-13 | 2022-03-01 | 重庆科技学院 | Heterogeneous metal friction stir welding system |
| CN112894123A (en) * | 2021-01-29 | 2021-06-04 | 华南理工大学 | Friction stir welding method for aluminum-copper dissimilar metal |
| CN114289848A (en) * | 2021-12-10 | 2022-04-08 | 中国电子科技集团公司第二十九研究所 | Method for connecting aluminum-based composite material and aluminum alloy |
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| Publication number | Publication date |
|---|---|
| CN101758329B (en) | 2012-01-11 |
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