A kind of 72Cu-28Zn alloy is auxiliary as the ultrasound of the magnesium alloy of intermediate reaction material layerHelp welding methodTechnical field
The present invention relates to Welding Technology of Magnesium Alloy fields, more particularly, to a kind of 72Cu-28Zn alloy as intermediate reactionThe ultrasonic wave added welding method of the magnesium alloy of material layer.
Background technique
With light-weighted development of field structures such as aerospace, traffic, 3C electronics, Mg alloy and its composite material etc. are lightUsing more and more extensive, the high-performance manufacture of structural member be unable to do without mature welding technique and supports material.And currentWelding technique such as fusion welding, conventional brazing and transition liquid phase diffusion weld connect etc. that there are welding temperatures, and higher, oxidation film is difficult to removes,The deficiencies of base material to be welded easily softens, some welding techniques need to also weld under vacuum or protective gas, and weld interval is too long,Brittle intermetallic compound is generated in welding process causes joint mechanical property generally lower.Therefore there is an urgent need to explore its heightPerformance welds new method and new technology.
Summary of the invention
In view of the deficienciess of the prior art, the object of the present invention is to provide a kind of 72Cu-28Zn alloys as intermediate anti-The ultrasonic wave added welding method for answering the magnesium alloy of material layer uses preferred work by filtering out suitable intermediate reaction material layerProcess generates without weld metal zone brittle intermetallic thing in the welding process, obtains full solid solution connector, weld interval of the inventionShort, joint mechanical property is high, and welding effect is good.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of 72Cu-28Zn alloy is as intermediate anti-Answer the ultrasonic wave added welding method of the magnesium alloy of material layer, including base material to be welded and intermediate reaction material layer, including following stepRapid: intermediate reaction material layer screening step, condition one, the fusion temperature of intermediate reaction material layer are lower than the fusing point of base material to be weldedEutectic temperature between 195-205 DEG C or intermediate reaction material layer and base material essential element to be welded is molten lower than base material to be welded150-300 DEG C of point, condition two, the maximum value of the solid solubility between intermediate reaction material layer and base material essential element to be welded is at leastReach 10%, condition three, intermediate reaction material layer essential element is no more than with the Atomic radiuses difference maximum in base material to be welded50pm, condition four, difference in Electrode Potential between intermediate reaction material layer essential element and base material to be welded at most -0.8V withInterior, intermediate reaction material layer at least meets three conditions in above four conditions, and according to conditions above, base material to be welded is magnesiumAlloy, intermediate reaction material layer select 72Cu-28Zn alloy；
Preparation process before reacting, the weld interface for treating welding base metal and intermediate reaction material layer carry out mechanical grinding and surpassSound cleaning, by base material and the intermediate reaction material layer to be welded after cleaning according to base material to be welded/intermediate reaction material layer/to be weldedThe sequence for connecing base material assembles to form connected components to be welded；
Connected components to be welded, are placed in the processing platform of ultrasonic welding system by upper machine ultrasonic welding step, and are ultrasonic worksTool head is pressed on the top of connected components to be welded；Ultrasonic probe is applied into pressure to connected components longitudinal direction to be welded, pressure value is0.1-0.2MPa；
Oxidation film step is abolished, ultrasonic conducting will be welded to connected components to be welded by Ultrasonic probe, treat weld assemblyIt carrying out loading ultrasound and heating, welds the power control of ultrasound in 200-500W, the frequency for welding ultrasound is controlled in 10-30kHz,Simultaneously by heating equipment heating intermediate reaction material layer, heating equipment power control exists in 4-6kW, the control of heating equipment frequency200-250kHz, the reaction temperature of intermediate reaction material layer is controlled at 460 DEG C, under the action of welding ultrasound, base material to be weldedPhysical state be solid-state, the physical state of intermediate reaction material layer is liquid, forms solid liquid interface, realizes that preliminary metallurgy connectsIt closes；
Ternary eutectic reaction step, Ultrasonic probe treat weld assembly and continue to welding ultrasound, weld the function of ultrasoundRate control is controlled in 200-500W, the frequency for welding ultrasound in 10-30kHz, while passing through heating equipment heating intermediate reaction materialThe bed of material, heating equipment power control are controlled in 4-6kW, heating equipment frequency in 200-250kHz, by intermediate reaction material layerReaction temperature is controlled at 455-465 DEG C, and the physical state of base material to be welded is solid-state, base material to be welded and intermediate reaction material layerTernary eutectic reaction occurs, wherein reaction equation are as follows: Mg+Cu → Mg2Cu and CuMgZn (ss) phases, intermediate reaction materialLayer is changed into the liquid phase of Mg-Cu-Zn eutectic structure, and Mg-Cu-Zn eutectic structure forms Mg-Cu-Zn eutectic structure layer, to be weldedFormation Mg (Cu, Zn) solid solution in base material is connect, Mg (Cu, Zn) solid solution forms Mg (Cu, Zn) solid solution layer, Mg-Cu-Zn eutecticThe thickness of thickness ratio Mg (Cu, Zn) solid solution layer of organized layer is big, and the physical state of Mg (Cu, Zn) solid solution is solid-state；
Solid solution growth step, Ultrasonic probe treat weld assembly and continue to welding ultrasound, ultrasonic welding system workSkill parameter remains unchanged, and the reaction temperature of intermediate reaction material layer is controlled at 455-465 DEG C, and the physical state of base material to be welded isSolid-state, the Mg-Cu-Zn eutectic structure reaction in intermediate reaction material layer are reduced to interrupted Mg-Cu-Zn eutectic structure floor area,The thickness in the thickness ratio Mg-Cu-Zn eutectic structure floor area of Mg (Cu, Zn) solid solution layer in intermediate reaction material layer is big；
Full Mg (Cu, Zn) solid solution connector forming step, Ultrasonic probe treat weld assembly and continue to welding ultrasound,The power control of ultrasound is welded in 200-500W, the frequency for welding ultrasound is controlled in 10-30kHz, while passing through heating equipment pairIntermediate reaction material layer is kept the temperature, and in 4-6kW, heating equipment frequency is controlled in 200-250kHz heating equipment power control,The reaction temperature of intermediate reaction material layer is maintained at 455-465 DEG C, and Mg-Cu-Zn eutectic structure disappears, Mg-Cu-Zn eutectic structureIt is totally converted Mg (Cu, Zn) solid solution, the physical state of Mg (Cu, Zn) solid solution is solid-state, so that it is solid to form full Mg (Cu, Zn)Solution connector, connected components isothermal solidification to be welded are completed；
Weld assembly step is completed, cancels protecting going easy on weld assembly cancellation welding ultrasound to intermediate reaction material layer,It keeps pressure to be cooled to room temperature in atmospheric environment, obtains welding finished product.
In further technical solution, the intermediate reaction material layer is greater than the weld interface of the base material to be welded；?In the intermediate reaction material layer screening step, the 72Cu-28Zn alloy with a thickness of 45-55 μm.
In further technical solution, in the ternary eutectic reaction step, Mg (Cu, Zn) solid solution formation Mg (Cu,Zn) solid solution layer, in full Mg (Cu, Zn) the solid solution connector forming step, joint microstructure is all by Mg (Cu, Zn) solid solutionLayer composition.
In further technical solution, in the ternary eutectic reaction step, Mg-Cu-Zn eutectic structure with a thickness of 40-45 μm, Mg (Cu, Zn) solid solution layer with a thickness of 2.5-5 μm；In full Mg (Cu, Zn) the solid solution connector forming step, Mg(Cu, Zn) solid solution layer with a thickness of 45-55 μm, Mg-Cu-Zn eutectic structure with a thickness of 0 μm.
In further technical solution, the base material to be welded includes upper substrate base material to be welded and lower substrate mother to be weldedMaterial, upper substrate base material to be welded are placed in the upper surface of intermediate reaction material layer, and lower substrate base material to be welded is placed in intermediate reactionBelow material layer, upper substrate base material to be welded is sized to 16mm*16mm*3mm, the size of lower substrate base material to be weldedIt is set as 20mm*20mm*3mm.
In further technical solution, before the reaction in preparation process, to the surface to be welded of the base material to be weldedIt polishes, the sand paper of 400-1500 mesh is selected to polish surface to be welded, it is 90- that base material to be welded, which is placed in concentration,It is cleaned by ultrasonic in 100% acetone soln and using cleaning ultrasonic wave, the ultrasonic cleaning time is 10-20 minutes.
In further technical solution, the heating rate of the ultrasonic welding system is 20 DEG C/min.
In further technical solution, in the ternary eutectic reaction step, the solid solution growth step and full MgIn (Cu, Zn) solid solution connector forming step, the ultrasonic welding system applies the welding ultrasound to the connected components to be weldedAction time is 90-120 seconds.
In further technical solution, in the ternary eutectic reaction step, the solid solution growth step and full MgIn (Cu, Zn) solid solution connector forming step, the reaction temperature of the intermediate reaction material layer is controlled at 460 DEG C.
In further technical solution, the base material to be welded selects ME20M magnesium alloy.
After adopting the above structure, the invention has the advantages that compared with the prior art:
1. completing the welding of brass and magnesium alloy under the lower welding temperature of atmospheric environment, obtaining changing between no brittle metalThe full solid solution connector of object is closed, weld interval is short, and joint mechanical property is high, and welding effect is good.
2. it abolishes the oxidation film in magnesium alloy in connected components to be welded using welding ultrasonication and squeezes out, without usingThe reaction spread of eutectic liquid phase can be realized in brazing flux, and base material to be welded and intermediate reaction material layer is made to realize preliminary metallurgical weld.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that welding ultrasonic wave added transition liquid phase diffusion weld of the invention connects structural schematic diagram；
Fig. 2 is Mg-Cu-Zn ternary phase diagrams of the present invention；
Fig. 3-6 is 72Cu-28Zn alloy of the present invention as intermediate reaction material layer, and base material to be welded is magnesium alloy, heatingContinue to apply the joint interface tissue topography signal that welding ultrasonication is 30 seconds, 45 seconds, 60 seconds and 90 seconds respectively to 460 DEG CFigure；
Fig. 7 is that 72Cu-28Zn alloy of the present invention makees intermediate reaction material layer, and base material to be welded is magnesium alloy, is heated to 460DEG C apply different time welding ultrasonication shearing strength of joint schematic diagram；
Fig. 8 is that 72Cu-28Zn alloy of the present invention makees intermediate reaction material layer, and base material to be welded is magnesium alloy, is heated to 460DEG C applying the welding ultrasonication time is 90 seconds connector fracture apperance schematic diagrames.
In figure: 1, Ultrasonic probe 2, heating equipment 3, base material to be welded 4, intermediate reaction material layer.
Specific embodiment
It is only below presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Embodiment one
A kind of ultrasonic wave added welding method of the magnesium alloy of 72Cu-28Zn alloy as intermediate reaction material layer, Fig. 1 instituteShow, including base material to be welded 3 and intermediate reaction material layer 4, base material 3 to be welded selects ME20M magnesium alloy.Base material 3 to be welded wrapsUpper substrate base material 3 to be welded and lower substrate base material 3 to be welded are included, upper substrate base material 3 to be welded is placed in intermediate reaction material layer 4The upper surface of, lower substrate base material 3 to be welded is placed in below intermediate reaction material layer 4, and the size of upper substrate base material 3 to be welded is setIt is set to 16mm*16mm*3mm, lower substrate base material 3 to be welded is sized to 20mm*20mm*3mm.Intermediate reaction material layer 4Greater than the weld interface of base material 3 to be welded.The following steps are included: 4 screening step of intermediate reaction material layer, condition one is intermediate anti-Answer the fusion temperature of material layer 4 lower than 195-205 DEG C of the fusing point or intermediate reaction material layer 4 of base material 3 to be welded and mother to be weldedEutectic temperature between 3 essential element of material is lower than 150-300 DEG C of 3 fusing point of base material to be welded, condition two, intermediate reaction material layer 4The maximum value of solid solubility between 3 essential element of base material to be welded is at least up to 10%, condition three, intermediate reaction material layer 4Atomic radiuses difference maximum in essential element and base material 3 to be welded is no more than 50pm, and condition four, intermediate reaction material layer 4 is mainlyDifference in Electrode Potential between element and base material to be welded 3 is at most within -0.8V, more than intermediate reaction material layer 4 at least meetsThree conditions in four conditions；
The design of material principle of intermediate reaction material layer 4 mainly include 4 aspect: 1) intermediate reaction material layer 4 have compared withEutectic temperature between low fusion temperature or intermediate reaction material layer 4 and 3 essential element of base material to be welded is lower；2) intermediateThere is higher solid solubility between 3 essential element of the reaction wood bed of material 4 and base material to be welded, to form solid solution connector；3) intermediate anti-4 essential element of material layer is answered to be close with the atomic radius in base material 3 to be welded, in the welding of isothermal solidification and homogenization of compositionIn the process, the atom in intermediate reaction material layer 4 is easy to spread into base material 3 to be welded, and forms solid solution and make connectorIt can improve；4) difference in Electrode Potential of 4 essential element of intermediate reaction material layer and base material 3 to be welded is close, to guarantee jointingCorrosion resistance.Based on above design principle, base material 3 to be welded is magnesium alloy, therefore intermediate reaction material layer 4 is selected72Cu-28Zn alloy；It is 45-55 μm that the thickness of 72Cu-28Zn alloy, which is selected,.
72Cu-28Zn alloy is also known as brass, and the fusing point of brass is 1193 DEG C.According to Mg-Cu binary phase diagraml, Mg-Cu systemThere are three eutectic reactions, wherein minimum eutectic temperature is 487 DEG C；And Mg-Cu-Zn ternary eutectic temperature is 450 DEG C, is such as schemedShown in 2, it is clear that the fusing point of base material 3 relatively to be welded reaches for the temperature of eutectic reaction, Mg-Cu-Zn ternary eutectic temperatureIt is for lower feasible Reaction Welding temperature for 450 DEG C, welding temperature refers to the reaction temperature of intermediate reaction material layer 4.CauseThis, welds magnesium alloy as intermediate reaction material layer 4 using 72Cu-28Zn alloy and advantageously reduces welding temperature.Therefore, this hairIt is bright to select the 455-465 DEG C of reaction temperature as intermediate reaction material layer 4.The fusing point of magnesium alloy is 650 DEG C, Mg-Cu-Zn ternaryEutectic temperature is 450 DEG C, and ternary eutectic temperature is lower than 200 DEG C of 3 melting temperature of base material to be welded, eligible one；Intermediate reactionThe maximum value of solid solubility between 3 essential element of material layer 4 and base material to be welded reaches 13.6%, eligible two, magnesium atomRadius be 160PM, the radius of copper atom is 128PM, the semidiameter of magnesium atom and copper atom is 32PM, and eligible three wantIt asks.
Preparation process before reacting, treat welding base metal 3 and intermediate reaction material layer 4 weld interface carry out mechanical grinding andUltrasonic cleaning, by after cleaning base material to be welded 3 and intermediate reaction material layer 4 according to 3/ intermediate reaction material layer of base material to be weldedThe sequence of 4/ base material 3 to be welded assembles to form connected components to be welded；
Specifically, the surface to be welded for treating welding base metal 3 is polished, and selects the sand paper of 400-1500 mesh to surface to be weldedIt polishes, it is in 90-100% acetone soln and clear using cleaning ultrasonic wave progress ultrasound that base material 3 to be welded, which is placed in concentration,It washes, the ultrasonic cleaning time is 10-20 minutes.Wherein, cleaning ultrasonic wave is the ultrasonic wave of ultrasonic generator generation and conducts extremelyThe ultrasonic wave of Ultrasonic probe 1 and service sink.
Connected components to be welded, are placed in the processing platform of ultrasonic welding system by upper machine ultrasonic welding step, and are ultrasonic worksTool head 1 is pressed on the top of connected components to be welded；Ultrasonic probe 1 is applied into pressure, pressure value to connected components longitudinal direction to be weldedFor 0.1-0.2MPa；The heating rate of ultrasonic welding system is 20 DEG C/min.
Oxidation film step is abolished, ultrasonic conducting will be welded to connected components to be welded by Ultrasonic probe 1, treat weld assemblyLoad ultrasound is carried out, welds the power control of ultrasound in 200-500W, the frequency for welding ultrasound controls in 10-30kHz, leads to simultaneouslyThe heating intermediate reaction material layer 4 of heating equipment 2 is crossed, 2 power control of heating equipment exists in 4-6kW, the control of 2 frequency of heating equipment200-250kHz, the reaction temperature of intermediate reaction material layer 4 is controlled at 460 DEG C, under the action of welding ultrasound, base material to be welded3 physical state is solid-state, and the physical state of intermediate reaction material layer 4 is liquid, forms solid liquid interface, realizes that preliminary metallurgy connectsIt closes；
Ternary eutectic reaction step, Ultrasonic probe treat weld assembly and continue to welding ultrasound, weld the function of ultrasoundRate control is controlled in 200-500W, the frequency for welding ultrasound in 10-30kHz, while passing through heating equipment heating intermediate reaction materialThe bed of material 4, heating equipment power control are controlled in 4-6kW, heating equipment frequency in 200-250kHz, by intermediate reaction material layer 4Reaction temperature control at 455-465 DEG C, the physical state of base material 3 to be welded is solid-state, base material 3 to be welded and intermediate reaction materialTernary eutectic reaction occurs for the bed of material, wherein reaction equation are as follows: Mg+Cu → Mg2Cu and CuMgZn (ss) phases, intermediate reactionMaterial layer is changed into the liquid phase of Mg-Cu-Zn eutectic structure, and Mg-Cu-Zn eutectic structure forms Mg-Cu-Zn eutectic structure layer,Mg (Cu, Zn) solid solution is formed in base material 3 to be welded, Mg (Cu, Zn) solid solution forms Mg (Cu, Zn) solid solution layer, Mg-Cu-The thickness of thickness ratio Mg (Cu, Zn) solid solution layer of Zn eutectic structure layer is big, and the physical state of Mg (Cu, Zn) solid solution is solidState；
After treating weld assembly application welding ultrasonication 30 seconds, it is total that 72Cu-28Zn alloy is completely reformed into Mg-Cu-ZnIt is as shown in Figure 3 to form certain thickness Mg (Cu, Zn) solid solution layer in the magnesium alloy for the liquid phase of brilliant ingredient.It is actually intermediate anti-Answer the reaction temperature control of material layer 4 at 460 DEG C and the fusion temperature of not up to 72Cu-28Zn alloy intermediate reaction material layer 4,The generation of liquid phase is entirely derived from the ternary eutectic that the contact area of base material to be welded 3 and intermediate reaction material layer 4 constantly occursReaction.
Specifically, Mg-Cu-Zn eutectic structure with a thickness of 40-45 μm, Mg (Cu, Zn) solid solution layer with a thickness of 2.5-5μm；
Solid solution growth step, as illustrated in figures 4-5, Ultrasonic probe 1 treat weld assembly and continue to welding ultrasound, surpassSonic soldering connects technical parameter and remains unchanged, and the reaction temperature of intermediate reaction material layer 4 is controlled at 455-465 DEG C, mother to be weldedThe physical state of material 3 is solid-state, and the content of the Mg-Cu-Zn eutectic structure in intermediate reaction material layer 4 gradually decreases, intermediate anti-It answers the Mg-Cu-Zn eutectic structure in material layer 4 to react and is reduced to interrupted Mg-Cu-Zn eutectic structure floor area, Mg-Cu-Zn is totalBrilliant area of organized layer middle layer region, which means, gradually reacts disappearance for the Mg-Cu-Zn eutectic structure in Mg-Cu-Zn eutectic structure floor,There is part to disappear from the boundary response of Mg-Cu-Zn eutectic structure layer, forms the camber line being recessed into layer, Mg-Cu-Zn on boundaryThe part reaction of eutectic structure, which disappears, to be occurred in Mg-Cu-Zn eutectic structure layer, so that occurring in Mg-Cu-Zn eutectic structure layerThe block substituted by Mg (Cu, Zn) solid solution, therefore form floor area continuously or intermittently.In intermediate reaction material layer 4The content of Mg (Cu, Zn) solid solution gradually increases, i.e. Mg (Cu, Zn) solid solution layer progressive additive, in intermediate reaction material layer 4The thickness in the thickness ratio Mg-Cu-Zn eutectic structure floor area of Mg (Cu, Zn) solid solution layer is big；
Full Mg (Cu, Zn) solid solution connector forming step, continues to apply as shown in fig. 6, Ultrasonic probe 1 treats weld assemblyIt is welded with and connects ultrasound, weld the power control of ultrasound in 200-500W, the frequency for welding ultrasound controls in 10-30kHz, passes through simultaneously2 pairs of heating equipment intermediate reaction material layers 4 are kept the temperature, and 2 power control of heating equipment is in 4-6kW, the control of 2 frequency of heating equipmentIn 200-250kHz, at 455-465 DEG C, Mg-Cu-Zn eutectic structure disappears for the reaction temperature control of intermediate reaction material layer 4,Mg-Cu-Zn eutectic structure is totally converted Mg (Cu, Zn) solid solution, and the physical state of Mg (Cu, Zn) solid solution is solid-state, thusForming full Mg (Cu, Zn) solid solution connector, that is, joint microstructure is all made of Mg (Cu, Zn) solid solution layer, specifically, Mg(Cu, Zn) solid solution layer with a thickness of 45-55 μm, connected components isothermal solidification to be welded is completed.It is super to treat weld assembly application weldingSound effect accelerates isothermal solidification process and accelerates both behaviors depending on a large amount of liquid phases extrusion and elements diffusion.
In ternary eutectic reaction step, solid solution growth step and full Mg (Cu, Zn) solid solution connector forming step, surpassSound welding equipment to connected components to be welded apply welding the ultrasonication time be 90-120 seconds.
Weld assembly step is completed, cancels protecting going easy on weld assembly cancellation welding ultrasound to intermediate reaction material layer 4,It keeps pressure to be cooled to room temperature in atmospheric environment, obtains welding finished product.
1 welding procedure of table is after being first to heat to the oxidation film that 460 DEG C of ultrasounds abolish Mg alloy surface for 3 seconds, to be continuously heating to460 DEG C of ultrasonic different times, the relationship of shearing strength of joint and ultrasonic time
It is controlled using the reaction temperature that 72Cu-28Zn alloy makees intermediate reaction material layer 4 when being welded for 460 DEG C, is connectThe shear strength of head is in the trend risen with treating weld assembly to apply the extension of welding ultrasonication time, such as Fig. 7 and table 1It is shown, it treats the weld assembly application ultrasonication time 90 seconds full Mg (Cu, Zn) solid solution strength of joints formed of welding and reachesHighest is 103.5MPa, reaches the 98.6% of ME20M magnesium alloy base material.Full Mg (Cu, Zn) solid solution connector main faults are in solidInside solution layer, there is continuous tear face in fracture surface, show that connector plasticity is preferably as shown in Figure 8.
The ultrasonic effect in intermediate reaction material layer 4 and the differential responses stage of base material 3 to be welded of welding in the present inventionBe it is different, present invention process can be summarized as primary ultrasound connection, the NEW TYPE OF COMPOSITE technique of twice ultrasonic heat preservation.Abolishing oxygenThe effect for changing the welding ultrasound in film step is to remove oxide film dissolving using the cavitation effect of ultrasonic wave, which is primary superSound connection；Weldering in ternary eutectic reaction step, solid solution growth step and full Mg (Cu, Zn) solid solution connector forming stepThe effect for connecing ultrasound is to connect the eutectic liquid phase extrusion that intermediate reaction material layer 4 is formed during the reaction with base material 3 to be weldedFor head to form full solid solution connector, which is twice ultrasonic holding stage.
Embodiment two
The primary structure, principle and effect of the present embodiment are the same as example 1, and which is not described herein again, differenceIt is, in abolishing oxidation film step, the reaction temperature of intermediate reaction material layer 4 is controlled at 460 DEG C, treats weld assembly applicationWelding ultrasonication 3-5 seconds；
In ternary eutectic reaction step, the reaction temperature of intermediate reaction material layer 4 is controlled at 460 DEG C；
In solid solution growth step, the reaction temperature of intermediate reaction material layer 4 is controlled at 460 DEG C；
In full Mg (Cu, Zn) solid solution connector forming step, the reaction temperature of intermediate reaction material layer 4 is controlled 460℃。
It is right in ternary eutectic reaction step, solid solution growth step and full Mg (Cu, Zn) solid solution connector forming stepThe resultant action time that connected components to be welded apply welding ultrasound is 90 seconds.
Embodiment three
The primary structure, principle and effect of the present embodiment are the same as example 1, and which is not described herein again, differenceIt is, in abolishing oxidation film step, the reaction temperature of intermediate reaction material layer 4 is controlled at 455 DEG C, treats weld assembly applicationWelding ultrasonication 5 seconds；
In ternary eutectic reaction step, the reaction temperature of intermediate reaction material layer 4 is controlled at 455 DEG C；
In solid solution growth step, the reaction temperature of intermediate reaction material layer 4 is controlled at 455 DEG C；
In full Mg (Cu, Zn) solid solution connector forming step, the reaction temperature of intermediate reaction material layer 4 is controlled 455℃。
It is right in ternary eutectic reaction step, solid solution growth step and full Mg (Cu, Zn) solid solution connector forming stepThe resultant action time that connected components to be welded apply welding ultrasound is 90 seconds.
Example IV
The primary structure, principle and effect of the present embodiment are the same as example 1, and which is not described herein again, differenceIt is, in abolishing oxidation film step, the reaction temperature of intermediate reaction material layer 4 is controlled at 465 DEG C, treats weld assembly applicationWelding ultrasonication 3 seconds；
In ternary eutectic reaction step, the reaction temperature of intermediate reaction material layer 4 is controlled at 465 DEG C；
In solid solution growth step, the reaction temperature of intermediate reaction material layer 4 is controlled at 465 DEG C；
In full Mg (Cu, Zn) solid solution connector forming step, the reaction temperature of intermediate reaction material layer 4 is controlled 465℃。
It is right in ternary eutectic reaction step, solid solution growth step and full Mg (Cu, Zn) solid solution connector forming stepThe resultant action time that connected components to be welded apply welding ultrasound is 90 seconds.
Embodiment five
The primary structure, principle and effect of the present embodiment are the same as example 1, and which is not described herein again, differenceIt is, in abolishing oxidation film step, the physical state of base material 3 to be welded is solid-state, the physical state of intermediate reaction material layer 4For solid-state；
In ternary eutectic reaction step, the physical state of base material 3 to be welded is solid-state, the object of intermediate reaction material layer 4Reason state is solid-state；
In solid solution growth step, the physical state of base material 3 to be welded is solid-state, the physics of intermediate reaction material layer 4State is solid-state；
In full Mg (Cu, Zn) solid solution connector forming step, the physical state of base material 3 to be welded is solid-state, intermediate anti-The disappearance of material layer 4 is answered to be converted into Mg (Cu, Zn) solid solution connector, the physical state of Mg (Cu, Zn) solid solution connector is solid-state；
In completing weld assembly step, the physical state of base material 3 to be welded is solid-state, Mg (Cu, Zn) solid solution connectorPhysical state be solid-state.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present inventionThought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present inventionLimitation.