CN104400204A - Ultrasonic welding method of aluminum/titanium dissimilar alloys - Google Patents
Ultrasonic welding method of aluminum/titanium dissimilar alloys Download PDFInfo
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- CN104400204A CN104400204A CN201410469908.7A CN201410469908A CN104400204A CN 104400204 A CN104400204 A CN 104400204A CN 201410469908 A CN201410469908 A CN 201410469908A CN 104400204 A CN104400204 A CN 104400204A
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- titanium
- welding
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- aluminium
- titanium alloy
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
- B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
Abstract
The invention provides an ultrasonic welding method of aluminum/titanium dissimilar alloys, and is widely applied to a vehicle industry. The ultrasonic welding method generates no intermetallic compound in the welding process, so that the welding line forming quality is high, the low temperature, the low pressure and the low energy consumption are realized, and the welding among dissimilar metals can be realized; an ultrasonic welding technology is adopted, and the influences of different process parameters are researched, so that an aluminum/titanium welding joint has higher tensile strength and stripping strength; when the welding time is 150 ms, the welding pressure is 0.5 MPa, and a titanium alloy is contacted with a welding electrode, the tensile shear strength and the stripping strength of the aluminum/titanium welding joint both reach maximal values of 5.04 MPa and 15.92 KN/m; and when an oxide film is removed from the titanium alloy, and the removal of the oxide film is not performed for an aluminum alloy, the tensile shear strength and the stripping strength of the welding joint in the mode of contacting the titanium alloy with the welding electrode are respectively 6.7 MPa and 26.56 KN/m.
Description
Technical field
The invention belongs to welding field, especially aluminium/titanium different alloys ultrasonic welding method.
Background technology
Aluminium alloy density is extremely low, and specific strength is higher, has extraordinary building-up property simultaneously, and price is comparatively cheap; The density of titanium alloy is very little, and specific strength is high, will corrode and Resisting fractre, and toughness is strong, but titanium alloy is expensive, which has limited the extensive use in every field; In order to enable aluminium alloy and titanium alloy have complementary advantages, the serviceability of balancing material and economic benefit, the composite component of aluminium/titanium different alloys obtains in auto manufacturing to be applied more and more widely.But, physical and chemical performance between aluminium alloy and titanium alloy has very large difference, thus huge difficulty is caused to the welding between bi-material, aluminium alloy and the connection of titanium alloy adopt mode be the most widely rivet, molten solder and being threaded, the domestic aluminium titanium dissimilar alloy welding technique that there is no the maturation of high-quality welding, the composite component limiting aluminium alloy and titanium alloy is applied more widely.
Summary of the invention
For Shortcomings in prior art, the invention provides a kind of aluminium/titanium ultrasonic welding method.
The present invention realizes above-mentioned technical purpose by following technological means.
A kind of aluminium/titanium ultrasonic welding method, step is as follows:
(1) aluminium alloy and titanium alloy are cut into rectangle and surperficial deoxidation film or the process of not deoxidation film are carried out to two kinds of alloys;
(2) aluminium alloy and titanium alloy adopt overlapping mode to weld, in welding process, aluminium alloy or titanium alloy are placed in the lower sound level of supersonic welder, holding workpiece and lower sound level are fitted completely, upper sound level then presses to workpiece from top to bottom under technological parameter, thus realizes the connection of aluminium titanium different alloys;
Described Magnesium in Aluminum Alloys and silicon are main component; Titanium alloy is two-phase, is mainly α phase under equilibrium state, and β phase is 9 ~ 30%.
The thickness of described aluminium alloy and titanium alloy is 0.25 ~ 0.35 mm.
The method of described aluminium alloy deoxidation film is: be soak 3 ~ 5 min in the NaOH solution of 5 ~ 12% in concentration by aluminum alloy flake, use a large amount of clean water, dry up after taking-up; The method of titanium alloy deoxidation film is: titanium alloy thin slice is placed in 15%HNO
3+ 5%HF+80%H
2soak 3 ~ 5 min in O solution, use a large amount of clean water after taking-up, dry up.
Described technological parameter is: welding static pressure is 0.4 ~ 0.7 MPa, and weld interval is 80 ~ 170 ms, and the dwell time is 350 ms.
Because the proportion of magnesium and silicon is little, strength ratio fine aluminium is high, and weldability is good, corrosion resistance and good, and fatigue strength is high etc., therefore adopts magnesium and silicon to be the aluminium alloy of essential element; Adopt biphase titanium alloy to be that structure stability is good because its comprehensive mechanical property is good, there is the performance of extraordinary plasticity, toughness and high temperature deformation.
The advantage of the inventive method is:
1. adopt ultrasonic welding technique in welding process, do not produce intermetallic compound, make appearance of weld quality high, and low temperature, low pressure, low energy consumption, the welding between dissimilar metal can also be realized.
2. adopt ultrasonic welding technique, and study the impact of different technical parameters, welding of aluminum titanium welding point has very high hot strength and peel strength.
detailed description of the invention
Embodiment 1
The impact of butt joint weld interval tensile shear strength:
Aluminium alloy thick for 0.3mm, titanium-alloy thin-plate are cut to the rectangle of this specification of 160mm × 10mm, then aluminum alloy flake part cut, titanium alloy thin slice carry out the process of deoxidation film, supersonic frequency is 20 KHz, time delay is 350 ms, welding air pressure changes (according to 0.1 MPa value of being often separated by) within the scope of 0.4 ~ 0.7 MPa, aluminium alloy is contacted with welding electrode, titanium alloy contacts two kinds of ultrasonic welding methods with welding electrode under, weld the impact of the tensile shear strength on aluminium titanium dissimilar alloy welding joint.
Result shows that best weld interval is at 150 ms, and the ultimate tensile strength of aluminium titanium welding point is 5.06 MPa, and the bond pull shear strength that titanium alloy contacts with welding electrode is greater than the strength of joint that aluminium alloy contacts with welding electrode.
Embodiment 2
The impact of welding pressure Welded Joints tensile shear strength:
Aluminium alloy thick for 0.3mm, titanium-alloy thin-plate are cut to the rectangle of this specification of 160mm × 10mm, then aluminum alloy flake part cut, titanium alloy thin slice carry out the process of deoxidation film, supersonic frequency is 20 KHz, time delay is 350 ms, weld interval changes within the scope of 80 ~ 170 ms (according to 10 ms values of being often separated by), aluminium alloy is contacted with welding electrode, titanium alloy contacts two kinds of ultrasonic welding methods with welding electrode under, weld the impact of the tensile shear strength on aluminium titanium dissimilar alloy welding joint.
Result shows when welding pressure is 0.5 MPa, aluminium alloy contacts with welding electrode and to contact the welding point that two kinds of welding methods process with titanium alloy with welding electrode and all reach maximum tension shear strength, and the bond pull shear strength that titanium alloy contacts with welding electrode is greater than the strength of joint that aluminium alloy contacts with welding electrode.
Embodiment 3
The oxide-film of aluminium alloy and titanium alloy is on the impact of tensile shear strength:
Known with the research of embodiment 2 through embodiment 1, weld interval be 150 ms, under welding pressure is 0.5 MPa, the tensile shear strength of the ultrasonic bonding of aluminium titanium different alloys is maximum.Under being 150 ms, welding pressure 0.5 MPa weld interval, the impact of the tensile shear strength of the deoxidation membrane stage Welded Joints of research aluminium alloy and titanium alloy.To the method that aluminum alloy surface carries out deoxidation film be wherein: be first soak 4 minutes in the NaOH aqueous solution of 10% in concentration, the A1 of aluminum alloy surface can be decomposed like this
2o
3oxide-film, then carries out rinsing the residue removing aluminum alloy surface with a large amount of clear water, finally uses hair-dryer to be dried up; And the minimizing technology of the surface film oxide of titanium alloy is: be first at 15%HNO
3+ 5%HF+80%H
2soak about 4 minutes in the solution of O, the TiO of titanium alloy surface can be decomposed like this
2oxidation film layer, then uses in a large amount of clear water and rinses, and is finally to use hair-dryer to be dried up.
Experimental result shows, titanium alloy deoxidation film, and aluminium alloy does not have deoxidation film, and the welding point tensile shear strength that the pre-welding treatment of titanium alloy deoxidation film obtains is the highest, reaches 6.7 MPa; And aluminium alloy deoxidation film, the tensile shear strength of the welding point of the pre-welding treatment of titanium alloy non-deoxidation film is minimum, only 4.0 MPa.
Embodiment 4
Weld interval Welded Joints peel strength impact:
According to embodiment 1 respectively under welding pressure is 0.4 ~ 0.7 MPa, adopt that aluminium alloy contacts with welding electrode, titanium alloy contacts two kinds of methods when welding with welding electrode, weld interval is on the impact of the peel strength of aluminium titanium dissimilar alloy welding joint.
Experimental result shows, when weld interval is 150 ms, the maximum peeling strength of aluminium titanium welding point reaches 17.12 KN/m, and the peel strength of the welding point that titanium alloy contacts with welding electrode is greater than the joint peel strength that aluminium alloy contacts with welding electrode.
Embodiment 5
The impact of welding pressure Welded Joints peel strength:
Studying weld interval according to embodiment 2 is 80 ~ 170 ms, adopts that aluminium alloy contacts with welding electrode, titanium alloy contacts two kinds of methods when welding with welding electrode, and welding pressure is on the impact of the peel strength of aluminium titanium dissimilar alloy welding joint.
Experimental result shows, when welding pressure is 0.5 MPa, the peel strength of aluminium titanium welding point is maximum, and the peel strength of the welding point that titanium alloy contacts with welding electrode is greater than the joint peel strength that aluminium alloy contacts with welding electrode.
Embodiment 6
The impact of the oxide-film Welded Joints intensity of aluminium alloy and titanium alloy:
Study according to embodiment 3, when the method that aluminium alloy contacts with welding electrode carries out ultrasonic bonding, titanium alloy deoxidation, during aluminium alloy not deoxidation film, the peel strength of welding point reaches maximum 20.82 KN/m; And aluminium alloy deoxidation film, welding point peel strength only 12.74 KN/m of the non-deoxidation film of titanium alloy are lower than the welding point peel strength 14.64KN/m not doing any process before weldering.When the method that titanium alloy contacts with welding electrode carries out ultrasonic bonding, the joint that peel strength is the highest is the welding point that aluminium alloy and titanium alloy have all carried out the process of deoxidation film, and peel strength reaches 26.56 KN/m; Titanium alloy deoxidation film, the welding point of the non-deoxidation film of aluminium alloy, peel strength is 24.83 KN/m; Aluminium alloy deoxidation film, the welding point of the non-deoxidation film of titanium alloy, peel strength is 20.32 KN/m; Minimum is the welding point all not carrying out any process, and peel strength is 15.92 KN/m only.
Tensile shear strength and the peel strength of ultrasonic bonding time, welding pressure Welded Joints have significant impact, when soldered for 150ms, welding pressure be 0.5 MPa, titanium alloy contact with welding electrode time, tensile shear strength and the peel strength of welding of aluminum titanium welding point all reach maximum, are respectively 5.04 MPa and 15.92 KN/m.Be 150 ms when soldered, welding pressure be 0.5 MPa to titanium alloy deoxidation film, during aluminium alloy not deoxidation film, adopt the tensile shear strength of welding point under titanium alloy and the welding electrode way of contact and peel strength to be respectively 6.7 Mpa and 26.56 KN/m.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.
Claims (5)
1. aluminium/titanium different alloys ultrasonic welding method, is characterized in that comprising the steps:
(1) aluminium alloy and titanium alloy are cut into rectangle and surperficial deoxidation film or the process of not deoxidation film are carried out to two kinds of alloys;
(2) aluminium alloy and titanium alloy adopt overlapping mode to weld, in welding process, aluminium alloy or titanium alloy are placed in the lower sound level of supersonic welder, holding workpiece and lower sound level are fitted completely, upper sound level then presses to workpiece from top to bottom under technological parameter, thus realizes the connection of aluminium titanium different alloys.
2. aluminium/titanium different alloys ultrasonic welding method as claimed in claim 1, is characterized in that in step (1), aluminium alloy main component is magnesium and silicon; Titanium alloy is two-phase, is mainly α phase under equilibrium state, and β phase is 9 ~ 30%; Described aluminium alloy and titanium alloy thickness are 0.25 ~ 0.35 mm.
3. aluminium/titanium different alloys ultrasonic welding method as claimed in claim 1, it is characterized in that the method for aluminium alloy deoxidation film in step (1) is: be soak 3 ~ 5 min in the NaOH solution of 5 ~ 12% in concentration by aluminum alloy flake, use a large amount of clean water after taking-up, dry up; The method of titanium alloy deoxidation film is: titanium alloy thin slice is placed in 15%HNO
3+ 5%HF+80%H
2soak 3 ~ 5 min in O solution, use a large amount of clean water after taking-up, dry up.
4. aluminium/titanium different alloys ultrasonic welding method as claimed in claim 1, is characterized in that described in step (2), technological parameter is: welding pressure is 0.4 ~ 0.7 MPa, and weld interval is 80 ~ 170 ms, and the dwell time is 350 ms.
5. aluminium/titanium different alloys ultrasonic welding method as claimed in claim 4, it is characterized in that described welding pressure is 0.5 MPa, weld interval is 150 ms.
Priority Applications (1)
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|---|---|---|---|
| CN201410469908.7A CN104400204A (en) | 2014-09-16 | 2014-09-16 | Ultrasonic welding method of aluminum/titanium dissimilar alloys |
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|---|---|---|---|
| CN201410469908.7A CN104400204A (en) | 2014-09-16 | 2014-09-16 | Ultrasonic welding method of aluminum/titanium dissimilar alloys |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262910A (en) * | 2017-08-17 | 2017-10-20 | 哈尔滨工业大学（威海） | A kind of method for improving aluminium/titanium dissimilar metal ultrasonic spot welding strength of joint |
| CN107511582A (en) * | 2017-10-18 | 2017-12-26 | 哈尔滨工业大学（威海） | A kind of method for improving soft metal and hard metal foreign material ultrasonic spot welding strength of joint |
| CN109848522A (en) * | 2019-02-21 | 2019-06-07 | 东北电力大学 | A kind of two-phase stainless steel sheet ultrasonic wave added GTAW pulsating arc welding method |
| US10532421B2 (en) | 2017-08-29 | 2020-01-14 | Honda Motor Co., Ltd. | UAM resistance spot weld joint transition for multimaterial automotive structures |
| US10870166B2 (en) | 2018-02-01 | 2020-12-22 | Honda Motor Co., Ltd. | UAM transition for fusion welding of dissimilar metal parts |
| US11465390B2 (en) | 2020-03-02 | 2022-10-11 | Honda Motor Co., Ltd. | Post-process interface development for metal-matrix composites |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262910A (en) * | 2017-08-17 | 2017-10-20 | 哈尔滨工业大学（威海） | A kind of method for improving aluminium/titanium dissimilar metal ultrasonic spot welding strength of joint |
| US10532421B2 (en) | 2017-08-29 | 2020-01-14 | Honda Motor Co., Ltd. | UAM resistance spot weld joint transition for multimaterial automotive structures |
| US11344966B2 (en) | 2017-08-29 | 2022-05-31 | Honda Motor Co., Ltd. | UAM resistance spot weld joint transition for multimaterial automotive structures |
| CN107511582A (en) * | 2017-10-18 | 2017-12-26 | 哈尔滨工业大学（威海） | A kind of method for improving soft metal and hard metal foreign material ultrasonic spot welding strength of joint |
| US10870166B2 (en) | 2018-02-01 | 2020-12-22 | Honda Motor Co., Ltd. | UAM transition for fusion welding of dissimilar metal parts |
| US11278985B2 (en) | 2018-02-01 | 2022-03-22 | Honda Motor Co., Ltd. | UAM transition for fusion welding of dissimilar metal parts |
| CN109848522A (en) * | 2019-02-21 | 2019-06-07 | 东北电力大学 | A kind of two-phase stainless steel sheet ultrasonic wave added GTAW pulsating arc welding method |
| CN109848522B (en) * | 2019-02-21 | 2021-04-27 | 东北电力大学 | Ultrasonic-assisted GTAW (gas tungsten arc welding) pulsed arc welding method for duplex stainless steel sheet |
| US11465390B2 (en) | 2020-03-02 | 2022-10-11 | Honda Motor Co., Ltd. | Post-process interface development for metal-matrix composites |
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Application publication date: 20150311 |