CN105234552B - A kind of friction stir welding method of aluminum/magnesium alloy - Google Patents

A kind of friction stir welding method of aluminum/magnesium alloy Download PDF

Info

Publication number
CN105234552B
CN105234552B CN201510651661.5A CN201510651661A CN105234552B CN 105234552 B CN105234552 B CN 105234552B CN 201510651661 A CN201510651661 A CN 201510651661A CN 105234552 B CN105234552 B CN 105234552B
Authority
CN
China
Prior art keywords
stirring
welding
head
magnesium
aluminium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510651661.5A
Other languages
Chinese (zh)
Other versions
CN105234552A (en
Inventor
戚文军
宋东福
罗畅
周楠
黎小辉
王海艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of New Materials of Guangdong Academy of Sciences
Original Assignee
Guangdong Institute of Materials and Processing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Institute of Materials and Processing filed Critical Guangdong Institute of Materials and Processing
Priority to CN201510651661.5A priority Critical patent/CN105234552B/en
Publication of CN105234552A publication Critical patent/CN105234552A/en
Application granted granted Critical
Publication of CN105234552B publication Critical patent/CN105234552B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir 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
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

A kind of friction stir welding method of aluminum/magnesium alloy, it is characterized in that 0.5 ~ 5% zinc metal sheet that thickness is throat thickness is added among >=6mm middle thick aluminium sheet and magnesium plate, the stirring-head for being coated with titanium nitride membrane with applying, in 600 ~ 1200rpm of stirring-head rotating speed, 10 ~ 100mm/min of speed of welding, stirring-head is throat depth 2 ~ 15% to aluminium sheet side offset, volume under pressure 0.05mm, stirs welding.It is attractive in appearance that the method for the present invention can shape the stir friction welding seam of aluminium/magnesium dissimilar metal, and structural constituent is controlled, and performance is more excellent.Aluminium/magnesium dissimilar metal friction stir welding is set to reach engineer applied requirement.

Description

A kind of friction stir welding method of aluminum/magnesium alloy
Technical field
The invention belongs to agitating friction weldering technical field, is a kind of stirring for improvement aluminum/magnesium alloy dissimilar welded joint structure property Mix friction welding method.
Background technology
The welding of aluminum/magnesium alloy dissimilar welded joint is a big difficult point and focus, the research that domestic and foreign scholars are done in this respect at present Work focuses primarily upon two aspects of traditional melting welding and agitating friction weldering.Due to the special physical and chemical performance of Al alloys andMg alloys, using molten The joint shaping and poor performance that soldering method is welded to obtain, usual strength of joint can only achieve 30% of strength of parent or so, several There is no engineering application value.And mother metal is non-fusible during agitating friction weldering, plasticized joining is formed, therefore applied to aluminium, magnesium Deng the welding of light metal.However, producing binary eutectic reaction when aluminum/magnesium alloy dissimilar welded joint welds at 437 DEG C, formed hard crisp Second phase Mg17Al12, this product has an impact not only for weldquality, and more important is have adhesive attraction to stirring-head so that Welding process is difficult to.
In order to improve aluminum/magnesium alloy dissimilar welded joint agitating friction weldering process and joint quality, researcher is at several aspects It is studied：1. the thermoplastification temperature of Al alloys andMg alloys is different, and agitating friction weldering has advance side with retreating the area of side by weldering mother metal Point, therefore, Al alloys andMg alloys are that can have an impact positioned at advance side or positioned at side is retreated to welding result；2. in view of between metal The generation of compound, researcher are also studied on the problem of stirring-head is offset.The main purpose of skew is control gold Belong to the amount of stirring into, to reduce the quantity of formation of intermetallic compound.But the studies above all can not fundamentally solve aluminium/magnesium The appearance of weld of alloy dissimilar welded joint agitating friction weldering is poor, the common problem that stirring-head is adhered and strength of joint is low.
CN101722358A discloses a kind of friction stir welding method of the dissimilar metal with aluminium/magnesium.The method mainly passes through One layer of suitable intermediate layer material is coated on closest workpiece surface at weld interface or with stirring tool（Copper, tin, zinc One or more in）, in agitating friction weldering, aluminium adjacent with stirring area, magnesium react, and obtain increasingly complex mixing Thing simultaneously forms stronger solder bond, but this method is not provided with adding the quantity of intermediate layer material, what joint microstructure occurred Change and the results of property of aluminium/magnesium foreign material friction stir welding.
CN103934584A discloses a kind of pure zinc of overlapping part addition or aluminium zinc thin slice by steel plate and aluminium sheet, The intermediate layer of aluminium/steel joint is formed during agitating friction, suppresses to form weld metal zone brittle intermetallic thing between aluminum steel, obtains Appearance of weld is attractive in appearance, aluminum/steel dissimilar material lap joints of good mechanical properties.This method is only for aluminum/steel dissimilar metal Overlap joint.
The content of the invention
It is an object of the invention to problem and shortage be present for above-mentioned, a kind of improvement aluminium/magnesium dissimilar welded joint tissue is proposed The friction stir welding method of performance, it is attractive in appearance that this method can shape the stir friction welding seam of aluminium/magnesium dissimilar metal, is organized into Get control, performance is more excellent, aluminium/magnesium dissimilar metal friction stir welding is reached engineer applied requirement.
The technical proposal of the invention is realized in this way：Thickness is added among >=6mm middle thick aluminium sheet and magnesium plate as weldering 0.5 ~ 5% zinc metal sheet of thickness is connect, the stirring-head of titanium nitride membrane is coated with painting, in stirring-head 600 ~ 1200rpm of rotating speed, welding 10 ~ 100mm/min of speed, stirring-head are throat thickness 2 ~ 15% to aluminium sheet side offset, volume under pressure 0.05mm, stir welding.
The preparation method of stirring-head of the present invention that be coated with titanium nitride membrane that applies is：Use magnetron sputtering apparatus, plating 400 ~ 500 DEG C of film temperature, N20.3 ~ 0.6Pa of atmospheric pressure, 120 ~ 180min of plated film time, stirring-head Surface Creation titanium nitride thin Film, thicknesses of layers are 2 ~ 3 μm.
The friction stir welding method of aluminum/magnesium alloy of the present invention is characterized in：It is 1. to be welded in two kinds of heterogeneous alloys Zinc metal sheet is inserted in face, and its thickness is determined by throat depth, is the 0.5 ~ 5% of throat depth, generally in below 1mm.Closed according to Al-Mg Knowable to golden binary phase diagraml, when aluminum/magnesium alloy dissimilar materials welds, binary eutectics reaction is produced at 437 DEG C, generates firmly crisp second Phase Mg17Al12, solubility of the aluminium in magnesium is 12.6%, and eutectic structure will be directly formed more than this solubility, and stirring-head is produced Raw adhesion.Zinc is added in Mg/Al alloys.Eutectic can be made to become divergence type, meanwhile, the concentration of stirring area magnesium is adjusted, is reduced low The quantity of melting eutectic, improve the tacky state of stirring-head, contribute to the normal work of stirring-head.2. stirring head surface is coated with one Layer nitride is thin
Film, the film hardness is high and coefficient of friction is small, it is possible to reduce the eutectic adhesion stirring-head of melting.Meanwhile by Reduce in coefficient of friction, causing the energy of unit interval input weld seam reduces, and is possible to control under the appropriate temperature conditions The quantity that binary eutectic organizes the formation of.Aluminium alloy plastic deformation ability is strong compared with magnesium alloy, and stirring-head is offset to aluminium sheet side, can Increase the content of weld metal zone aluminium alloy, improve the mobility of weld seam.It is derived from shaping weld seam attractive in appearance.
The present invention this have the advantage that compared to existing friction stir welding method：Heat input is easy to during dissimilar metal welding Control, welding process stirring-head will not be adhered, and joint welding tissue is controlled, and face of weld shaping is good, and this method is adapted to In the engineering application of aluminium/magnesium dissimilar welded joint.
Brief description of the drawings
Fig. 1 is the weld seam metallograph that embodiment 1 is welded.
Embodiment
Embodiment 1
Magnesium plate is processed into 150mm × 75mm, thickness 6mm with aluminium sheet；Zinc metal sheet is processed into 150mm × 6mm, thickness 0.1mm.Weldering Joint uses docking mode, and aluminium sheet is located at advance side, and zinc metal sheet is placed in buttcover plate center by magnesium plate positioned at side is retreated, using stirring Welding plate clamping will be treated by mixing friction welding clamp.Stirring-head rotating speed is used as 900rpm, speed of welding 30mm/min, volume under pressure is 0.05mm, stirring-head is offset into 0.5mm, welding to aluminium sheet side.
Embodiment 2
With embodiment 1.Stirring-head rotating speed is 1200rpm, speed of welding 50mm/min, volume under pressure 0.05mm, will be stirred Mix head and offset 0.8mm, welding to aluminium sheet side.
Embodiment 3
With embodiment 1.Stirring-head rotating speed is 600rpm, speed of welding 10mm/min, volume under pressure 0.05mm, will be stirred Head offsets 0.1mm, welding to aluminium sheet side.
Embodiment 4
With embodiment 1.Stirring-head rotating speed is 1000rpm, speed of welding 100mm/min, volume under pressure 0.05mm, will be stirred Mix head and offset 0.3mm, welding to aluminium sheet side.
Comparative example
Without using zinc metal sheet, without using applying the stirring-head that is coated with titanium nitride membrane, the other the same as in Example 1.
The face of weld shaping of embodiment 1-4 welding is good, continuously weld seam no significant defect during welding, from the weld seam obtained Metallographic structure is observed, the β phases of generation（Mg17Al12）Controlled, dense structure and crystal grain refinement, magnesium/aluminium fusion position transition Uniformly；The face of weld shaping of comparative example is poor, is hardly formed continuous fish scale-shaped weld seam, serious lack inside weld seam be present Fall into.The joint tensile strength and contrast of embodiment 1-4 and comparative example are shown in Table 1.
Table 1
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention institute Other changes of disclosed embodiment, are readily apparent that, such change should belong to this for the professional person of this area Within the scope of invention claim limits.

Claims (1)

1. a kind of friction stir welding method of aluminum/magnesium alloy, it is characterized in that being added among >=6mm middle thick aluminium sheet and magnesium plate thick Spend 0.5 ~ 5% zinc metal sheet for throat thickness, the stirring-head of titanium nitride membrane be coated with applying, stirring-head rotating speed 600 ~ 1200rpm, 10 ~ 100mm/min of speed of welding, stirring-head to aluminium sheet side offset be throat thickness 2 ~ 15%, volume under pressure 0.05mm, stirring welding.
CN201510651661.5A 2015-10-10 2015-10-10 A kind of friction stir welding method of aluminum/magnesium alloy Active CN105234552B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510651661.5A CN105234552B (en) 2015-10-10 2015-10-10 A kind of friction stir welding method of aluminum/magnesium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510651661.5A CN105234552B (en) 2015-10-10 2015-10-10 A kind of friction stir welding method of aluminum/magnesium alloy

Publications (2)

Publication Number Publication Date
CN105234552A CN105234552A (en) 2016-01-13
CN105234552B true CN105234552B (en) 2018-01-26

Family

ID=55032507

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510651661.5A Active CN105234552B (en) 2015-10-10 2015-10-10 A kind of friction stir welding method of aluminum/magnesium alloy

Country Status (1)

Country Link
CN (1) CN105234552B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106312295B (en) * 2016-10-14 2018-12-25 重庆大学 A method of addition intervening welding material improves aluminium lithium alloy strength of welded joint
CN106735860B (en) * 2017-03-06 2021-07-20 太原科技大学 Friction stir welding method for magnesium-aluminum alloy/magnesium-aluminum alloy composite plate
CN109986231A (en) * 2019-05-16 2019-07-09 河北工业大学 A kind of high-intensitive aluminium containing middle layer/magnesium different alloys connector and preparation method thereof
CN111927910B (en) * 2020-06-18 2022-09-30 北京遥感设备研究所 Aluminum-magnesium alloy integrated multifunctional integrated structure
CN114029608B (en) * 2021-12-09 2023-01-03 南昌航空大学 Thick plate friction stir welding method for aluminum and dissimilar metal
CN115007995B (en) * 2022-05-26 2023-04-21 南京航空航天大学 Method for reducing friction stir welding deformation of ultra-long thin plate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101537539A (en) * 2009-04-24 2009-09-23 重庆大学 Pin tool for friction stir welding and current carrying friction stir welding method
JP2010036230A (en) * 2008-08-06 2010-02-18 Toshiba Corp Friction stir treating method of dissimilar material joining part, and friction stir welding method of dissimilar material
CN102794563A (en) * 2012-08-24 2012-11-28 北京科技大学 Stirring friction diffusion welding method used for connection of dissimilar materials
CN103008875A (en) * 2012-12-28 2013-04-03 北京理工大学 Dissimilar metal welding joint and welding method thereof
CN103286434A (en) * 2013-05-30 2013-09-11 南京理工大学 Method for manufacturing high-strength laminated composite boards
CN104107978A (en) * 2014-07-17 2014-10-22 上海交通大学 Method for improving strength and plasticity of dissimilar material stir friction welding joint
CN104842062A (en) * 2015-04-24 2015-08-19 西南交通大学 Friction stir welding method for butt joint of dissimilar metal materials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010036230A (en) * 2008-08-06 2010-02-18 Toshiba Corp Friction stir treating method of dissimilar material joining part, and friction stir welding method of dissimilar material
CN101537539A (en) * 2009-04-24 2009-09-23 重庆大学 Pin tool for friction stir welding and current carrying friction stir welding method
CN102794563A (en) * 2012-08-24 2012-11-28 北京科技大学 Stirring friction diffusion welding method used for connection of dissimilar materials
CN103008875A (en) * 2012-12-28 2013-04-03 北京理工大学 Dissimilar metal welding joint and welding method thereof
CN103286434A (en) * 2013-05-30 2013-09-11 南京理工大学 Method for manufacturing high-strength laminated composite boards
CN104107978A (en) * 2014-07-17 2014-10-22 上海交通大学 Method for improving strength and plasticity of dissimilar material stir friction welding joint
CN104842062A (en) * 2015-04-24 2015-08-19 西南交通大学 Friction stir welding method for butt joint of dissimilar metal materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
搅拌针偏移对7075铝合金-AZ31镁合金接头组织及性能的影响;康举;《第二届搅拌摩擦焊国际会议论文集》;20131022;第167-173 *

Also Published As

Publication number Publication date
CN105234552A (en) 2016-01-13

Similar Documents

Publication Publication Date Title
CN105234552B (en) A kind of friction stir welding method of aluminum/magnesium alloy
CN101722358B (en) Friction stir welding of dissimilar metals
CN105855705B (en) A kind of stainless steel titanium alloy dissimilar metal method for laser welding
CN105965150B (en) A kind of friction stir welding method between dissimilar metal plate
Kah et al. Trends in joining dissimilar metals by welding
CN104801848B (en) Method for adjusting and controlling brittle phase in titanium/aluminum dissimilar metal friction stir welding joint
CN100556602C (en) The method of soldering of ultrasonic wave auxiliary laser or laser braze-welding
Shao et al. Effect of joining parameters on microstructure of dissimilar metal joints between aluminum and galvanized steel
Sahu et al. Al/Cu dissimilar friction stir welding with Ni, Ti, and Zn foil as the interlayer for flow control, enhancing mechanical and metallurgical properties
CN109202275B (en) Permanent reinforced friction stir welding method capable of preventing thinning and wide welding width
CN100464925C (en) AC tungsten inert gases welding electric arc micro-melting brazing procedure for aluminium, titanium and diverse metal alloy thereof
Li et al. Control of Mg2Sn formation through ultrasonic-assisted transient liquid phase bonding of Mg to Al
US20140061185A1 (en) Method for joining workpieces by using a joining element and heating the joining element and the workpieces
Sun et al. Fiber laser butt joining of aluminum to steel using welding-brazing method
CN113714622B (en) Stirring friction double-sided Z-shaped butt joint and lap joint composite welding method for medium plate heterogeneous material
CN108188582B (en) Laser-electric arc composite filler wire welding method for preparing magnesium/steel dissimilar metal
Panaskar et al. A review on recent advances in friction stir lap welding of aluminium and copper
CN105014227A (en) Thin-plate T-shaped joint friction-stir welding device and method assisted by lasers
CN113857669A (en) Laser welding method for titanium alloy and aluminum alloy dissimilar materials
Bergmann et al. Friction stir welding of tailored blanks of aluminum and magnesium alloys
Lin et al. Dissimilar metals TIG welding-brazing of aluminum alloy to galvanized steel
CN109623133A (en) A kind of bolt enhancing friction stir spot welding method suitable for titanium aluminium dissimilar materials
CN110814512A (en) Friction stir welding method for thin-specification titanium steel laminated composite plate
Meng et al. Laser dissimilar welding of Al/Mg lap-joint with Ti interlayer through optimized 8-shaped beam oscillation
CN108453369A (en) A kind of stirring-head for slab lamination aluminum alloy stirring friction welding

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20171226

Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No.

Applicant after: Guangdong Institute Of Materials And Processing

Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No.

Applicant before: GUANGZHOU Research Institute OF NON FERROUS METALS

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District

Patentee after: Institute of materials and processing, Guangdong Academy of Sciences

Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District

Patentee before: Guangdong Institute Of Materials And Processing

CP01 Change in the name or title of a patent holder
TR01 Transfer of patent right

Effective date of registration: 20220919

Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District

Patentee after: Institute of new materials, Guangdong Academy of Sciences

Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District

Patentee before: Institute of materials and processing, Guangdong Academy of Sciences

TR01 Transfer of patent right