CN101422847A - Dissimilar alloys solid-phase connection method by compressive stress state and shearing deformation die - Google Patents
Dissimilar alloys solid-phase connection method by compressive stress state and shearing deformation die Download PDFInfo
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Abstract
The invention relates to a solid state bonding technology for dissimilar alloys, in particular to a method for realizing solid state bonding by the compressive stress and the shear deformation of the dissimilar alloys, and the solid bonding of the dissimilar alloys is realized by a mold which can realize the compressive stress state and the shear deformation. Suitable alloy combination is selected, then the shear deformation is carried out in the mold, and the bonding is realized by thermal diffusion and re-crystallization. After the shear deformation, heat treatment is carried out to promote the re-crystallization and atomic diffusion, thus ensuring that the interfaces are bonded more firmly. The technology has the advantages of super plasticity diffused bond and friction stirring welding, meanwhile, overcomes the defect that the technology is only suitable for plate bonding and can not weld materials with large thickness and improves the whole performance of the material; the technology is also suitable for the high efficient bonding of multiple dissimilar metals once, unlike the traditional method which can only bond one seam once. The method can combine blank materials in parallel or in series, and a plurality of layers can be bonded once, thus improving the production efficiency, and the method is a novel method for solid state bonding.
Description
Technical field
The present invention relates to the solid-state interconnection technique of different alloys, specifically a kind of different alloys compression realizes the solid-state method that is connected with detrusion, it be the plastic deformation that produces by shear action with the mould that can realize compressive stress state detrusion and by thermal diffusion and again crystallization realize two sections or multistage is of the same race or the method for attachment of different metal materials.The extruding of passage moulds such as utilization of the present invention is carried out solid-state the connection with shear action, is a kind of new method of solid-state connection.
Background technology
Along with developing rapidly of Aero-Space, communications and transportation, chemical industry, building and electronics industry, constantly the performance of material is proposed more and more harsher requirement, traditional single material runs into increasing difficulty aspect requiring satisfying mechanical property, chemical property and electromagnetic performance etc. comprehensively.Therefore, the interconnection technique between different alloys, particularly solid-state interconnection technique are one of focus advanced subject of domestic and international researcher's concern always.
Through years of development, modern interconnection technique mainly comprises metallurgical connect (being commonly called as welding), mechanical connection, chemistry connection (promptly glueing joint), and wherein solder technology is occupied an leading position, and is most widely used.Welding method mainly contains shielded arc welding of tungsten electrode gas (GTAW/TIG), melting pole gas shielded arc welding (GMAW/MIG), electric resistance welding, friction welding (FW), diffusion welding (DW), supersonic welding, soldering, Laser Welding, electron beam welding and gas welding or the like, it wherein much is melting, owing to make it to be fused into liquid in the heating of connected piece surface local, also to add filler or gas simultaneously, be easy to generate HOT CRACK FOR WELDING P, melting loss of elements, defectives such as pore, after solidifying, the fusion zone can produce internal stress, generate crisp and hard intermetallic compound, produce as-cast structure, these factors all can reduce joint performance; And noise is big in process of production, produce arc light radiation, flue dust and splash etc., severe contamination environment.Therefore the research and development of the solid-state interconnection technique of new green non-pollution are the targets of solder technology development.
1991 Britain's institute of welding (TWI) invented a kind of novel solid-state interconnection technique-stirring friction weldering (FSW).Its operation principle is: stir soldering tip and inserting in the material joints to be welded in the rotation at a high speed, fricative heat between the stirring soldering tip of rotation and the weldment, the material temperature of seam crossing is raise and soften, simultaneously, stir soldering tip and do relative motion while rotating along seam and weldment, strong plastic deformation takes place and flows to the back of stirring soldering tip in flooring before stirring soldering tip, the deformable metal that shoulder institute applied pressure makes seam crossing combines securely by phase counterdiffusion and crystallization again, thereby forms stir friction welding seam.FSW can not produce splash, flue dust, need not add welding wire and protective gas, there is not the fusion process of metal in joint area, so the various defectives when not having melting welding; Simultaneously, because the large-scale thermoplasticity change procedure in fusion process center tap position, the internal stress of postwelding joint is little, distortion is little, can realize that substantially the low stress of plate does not have the distortion welding, becomes a kind of novel green solder technology.But FSW is applicable to the connection between sheet material usually owing to be subjected to stirring the restriction of friction area of bed, and for the very big material of welded section, its core is difficult to realize seam.The defective that the diffusion connection produces in the time of also can avoiding adopting fusion welding method as the solid-state interconnection technique of another kind is widely used in the connection of dissimilar metal sheet.It is under less than 0.7Tm (Tm is the absolute temperature of material melting point) and low pressure, the plasticity flow region relevant with the time appears at two material surfaces to be connected, generating material is to the diffusion of surface void, through space after the long period from the initial surface complete obiteration, thereby realize combining closely of interface.The material that diffusion connects does not need follow-up welding processing, still has good dimensional stability after connection.
Equal channel angle extruding (Equal Channel Angular Extrusion, abbreviation ECAE) technical development has the history of two more than ten years so far, it is a novel and efficient high performance alloys technology of preparing, its mechanism is by exerting pressure material to be expressed to another passage from a passage, the pure shear distortion takes place in the place of corner in sample, the shape of cross section of material remains unchanged after extruding, can repeat this process, utilize the cumulative effect of the strong shear strain at uiform section channel corner place, keeping under the state of massive material obtaining sizable overall strain amount through the accumulation superposition of multi-pass detrusion repeatedly, significantly refining grain size produces micron or submicron order crystal grain; The equal channel angle extrusion technique is mainly used in experimental study work at present, is the effective crystal fining method of a kind of innovation, can improve the performance of material and improve formability, perhaps is used for the superplastic ability of research material and the variation of institutional framework etc.
The advantage of ECAE technology is subjected to the extensive concern of industrial quarters, has carried out the exploration of some commercial Application at present, and has obtained certain progress, as the C2S2 technology of Korea S, utilizes ECAE to carry out continuous confined strip shearing after metal band is rolling, is used for the continuous rolling strip; In addition, the ECAE device of Tape movement wall provides direction for machining large-sized product; And rotating mould ECAE device has been simplified the repeatedly difficulty of cargo handling process of sample, and ECAE progressively advances towards commercial Application.
Distinct advantages when utilizing the equal channel angular extruding can be selected suitable different alloys material for use, especially is the block materials of non-plate shape, carries out solid-state connection.The carrying out of violent plastic deformation simultaneous diffusion taken place and realizes preliminary connection in material in the detrusion extrusion process under the uniform temperature certain pressure, and this is identical with the principle that the superplasticity diffusion connects; The friction that exists between the material surface in the process of detrusion simultaneously also can cause plastic flow, and this is similar to the principle that stirs the friction weldering again.Therefore wait the solid-state connection of passage to be actually diffusion and connect and stir the comprehensive of friction weldering, have the advantage of the two, it also possesses this two kinds of advantages that technology did not have simultaneously---and the overall performance of raising material is also realized the connection of block materials.So the solid-state interconnection technique of equal channel angular detrusion is a kind of a kind of novel solid-state process technology that is connected that materials processing technology and solder technology are combined.
Utilize the solid-state connection process technology of detrusion, be expected to realize the solid-state connection of different-alloy, for example magnesium alloy, aluminium alloy, kirsite, titanium alloy, copper alloy and ferrous materials etc.Simultaneously, it can realize accurate dimensions control, produces accurate in size product.Can predict, the solid-state connection process technology of detrusion is with a wide range of applications industrial.
Summary of the invention:
The objective of the invention is to utilize equal channel angular detrusion technology to realize solid-state connection, provide a kind of different alloys compression and detrusion to realize the solid-state method that is connected, it is that reliability large tracts of land higher, that can realize block materials connects and the solid-state method of attachment of the simple and direct effective different alloys of technology.Solve the easy generation HOT CRACK FOR WELDING P, scaling loss, pore, distortion, the internal stress that exist in traditional method of attachment, be difficult to realize the problems such as effective connection of the large interface of block materials.
Technical scheme of the present invention is:
The alloy species of the present invention by selecting to be suitable for, design its arrangement mode, realize the solid-state connection of dissimilar metal through the detrusion extruding.The connector of aluminium alloy and magnesium alloy had for example both had the advantage such as anticorrosive, high strength of aluminium, had the advantages such as damping, sound absorption and electromagnetic wave shielding height of magnesium alloy again, effectively combined the performance of the two; Realized the comprehensive of foreign material advantage.
Material selection of the present invention and compound mode are relatively freer, can take to make up different metal materials with two sections or modes such as parallel connection of multistage metal or series connection, carry out solid-state the connection by compression with detrusion, promote diffusion to realize the effective combination in interface by annealing then, further strengthen bonding strength.
The present invention uses compression to carry out being connected of dissimilar metal with detrusion, its superiority is mainly reflected in: owing to connect is to carry out under solid-state, therefore can not produce the fusion zone, just defectives such as fire check, melting loss of elements, pore be can not produce, intermetallic compound and solidified structure can not produced yet; Material bears static pressure stress and shear stress at a certain temperature, the effective oxide-film of deface, thereby make fresh exposed metal/bare metal guarantee tight contact the between material face and the face, avoided the shortcoming of diffusion method of attachment surface metal flow difficulties, diffusion velocity can be faster under the plastic flowing conditions simultaneously, can obtain the bonding state good interface; Material monolithic crystal grain is fined, and plasticity is improved.The present invention possesses the shortcoming that has overcome only suitable being connected of sheet material of conventional solid-state method of attachment when superplasticity spreads connection and stirs the advantage of friction weldering and can not weld big thickness material; The present invention also is particularly suitable for once efficiently connecting between multiple dissimilar metal, and unlike above-mentioned conventional method, once can only connect one the slit.Can take to make up different metal materials in modes such as parallel connection or series connection between two sections or multistage blank, once realize the connection of multilayer, improve production efficiency, be a kind of new method of solid-state connection.
The present invention uses compression and detrusion method to realize that dissimilar metal is connected.At first choose suitable alloy combination, reasonably arrange in pairs or groups, adopt reasonable process technology, carry out the distortion of one or many extrusion shearing in detrusion mould (as equal channel angular extrusion die) lining, realize connecting through after the surface treatment.Extruding back is chosen suitable temperature and time and is heat-treated further promotion interfacial diffusion and crystallization again according to the Interface Microstructure of different alloys and mutually performance, thus make Interface Microstructure evenly, in conjunction with firm.
The present invention utilizes compression and detrusion to realize the solid-state technology that is connected of dissimilar metal, with two sections or the multistage metal material is in parallel or series connection is stacked in the mould that can realize detrusion; Then, blank is carried out detrusion make metal material pass through die channel in mould, realize the solid-state connection of dissimilar metal; Comprise connection device detrusion Mould design and application; The surface preparation of material to be connected, arrangement mode and joint geometry design; The control of detrusion extrusion process; Subsequent anneal is handled.The main technique step is as follows:
1) select to optimize the alloy combination that is suitable for the character of alloy as required, after surperficial appropriate location reason, the combining between formation face and the face by waiting shearing plastic deformation that the extruding of passage mould produces.In general, oxide-film is the obstacle of interface combination, has the local material of oxide-film to be difficult to seam, has only oxide film breakdown, fresh exposed metal/bare metal and being in contact with one another, between the metal just might in conjunction with.Oxide-film is thin more, crisp more, easy more fragmentation when flow of metal, and seam is just easy more; Oxide-film is tough and yielding, and then oxide-film can be out of shape together along with metal when distortion, makes fresh metal be difficult to expose, and the metal seam is difficulty just.Therefore need take suitable preliminary treatment, under the effect of certain temperature and pressure, metal or alloy is combined into one, and make its interface reach metallurgical binding by plastic deformation.
Before extrusion process begins, blank surface is carried out preliminary treatment, using Mechanical Method (as with emery wheel, iron brush or sand paper etc.) or liquid to embathe method (as sour, alkali or alcohol etc.) or removals such as physics, chemical method is unfavorable for metal surface greasy dirt, the oxide skin of seam and attachment such as is mingled with, guarantee to obtain totally and have the faying face of certain roughness, be beneficial to more surperficial sweet spot contact; Perhaps adopt the preparation of chemistry or electrochemistry coating method to help compound rete; Also can not do any processing and directly carry out the detrusion extruding the surface.
2) can in the detrusion mould, add less amount of lubrication oil before the extruding, reduce the friction of metal and die cavity.The control extrusion temperature prevents to form intermetallic compound on the interface; For the relatively poor metal of binding ability, can between the interface, be added with and be beneficial to the transition metal layer that improves bond strength.Extrusion process can be carried out one or many, can be consistent with the orientation when repeatedly pushing with the direction of extrusion originally, and perhaps along 90 ° of extruding axial rotation or 180 ° of extruding once more, promptly along 90-180 ° of oneself height direction rotation.
Adopt special-purpose combined shear distortion mould, mould structure comprises: drift, mold, etc. passage etc., the extruding corner is 50-170 °, mould has heating and temperature regulating device, the size of assembling die and structure are as shown in Figure 1, detrusion mold cavity width (W) and thickness (L) scope are 5-5000mm (Fig. 1), highly (H) scope 20-5000mm.Detrusion mold cavity shape of cross section can be circle, square, rectangle, parallelogram, trapezoidal or " flute profile " etc.Mould corner preferable range is 90-150 °, and die cavity width and thickness preferable range are 10-1000mm, and the height preferable range is 100-2000mm, waits the preferred square of passage die cavity shape of cross section, rectangle or circle.
The present invention is applicable to various metal materials, carries out the selection and the collocation of material according to actual needs with the character of material; When parallel way connected, the width of every layer of metal material and mould were sheared width of channel (W) consistent (Fig. 1), and the thickness (L) of passages such as gross thickness and shearing die is consistent.Width is selected arbitrarily with the ratio of thickness, and the preferable range of flakiness ratio is 1-1000; During series connection, the metal material cross sectional shape is identical with the mold sections geomery.When being series system, metal head shapes to be connected is tack, V prefix, cup head or flute profile.
Before extrusion process began, blank is preheating in mould, and the preheat temperature scope is a room temperature to 1000 ℃, temperature retention time 0-10h, preheat temperature preferable range room temperature to 500 ℃, temperature retention time preferable range 5min-3h; Be transported in the mold cavity again after also can outside mould, heating with other mode of heating.The combination blank pushes in mould and organizational controls, and the detrusion temperature is a room temperature to 1000 ℃, preferable range 100-800 ℃; The extruding rate scope is (10
-5-100)/and s, preferable range (10
-3-1)/s; Blank samming and be incubated 0-10h, preferable range 5min-3h in mould.
3) as required, carry out diffusion annealing after the extruding.Promote thermal diffusion and crystallization again by annealing, improve interface bond strength,, generally will be chosen in more than the raw-material recrystallization temperature according to phasor selective annealing temperature, if it is bigger that the recrystallization temperature of constituent element differs, can select two kinds of certain limits between the recrystallization temperature.The temperature of annealing in process ℃ is advisable with room temperature to 1000, and it is not obvious that temperature is crossed low diffusion effect, in conjunction with insecure; Temperature is too high to be easy to generate compound between brittle metal; Annealing time can be taken as 0.5-100 hour, and the time, too short diffusion was insufficient, and overlong time can grain growth occur or material is overbated.Can charge into protective atmosphere in case of necessity, as N
2Or gas such as Ar.Rationally control tissue, composition, the thickness of technology to obtain desirable transition zone.200-1000 ℃ of annealing in process temperature preferable range, temperature retention time preferable range 0.5-10h.
The present invention pushes by detrusion, has realized the solid-state connection of different alloys, simultaneously can the refinement interior tissue improves the overall performance of material, can realize scale, serialization production.The present invention has following advantage:
1, the solid-state interconnection technique of detrusion a kind of new technology that two or more physics, chemistry, metal that mechanical property is different can be linked together with parallel connection or series system, it has remedied the deficiency of each constituent element, combines the advantage of each constituent element; Cooperate by optimization, can realize the diversity of overall performance each constituent element alloy.Material selection of the present invention and compound mode are relatively free, can take modes such as bilayer or multilayer and two sections or multistage to make up different metal materials, carry out hot extrusion by pressure and detrusion to realize being connected, utilize annealing promotion interface combination then.
2, use the detrusion mould to carry out the connection of dissimilar metal,, can not produce the fusion zone owing to be under solid-state temperature, to carry out, therefore can not produce fire check, melting loss of elements, pore, etc. defective, can not produce intermetallic compound yet.
3, the present invention carries out under uniform temperature, certain pressure, has the plurality of advantages of diffusion interconnection technique, and simultaneously, the plasticity that violent shear action causes flows and also can promote the carrying out of diffusion process, and production efficiency obviously improves.
4, the present invention not only can realize solid-state connection, and crystal grain that can the refinement integral material, improves intensity and plasticity, is a kind of new technology with process technology and solder technology combination.
5, the present invention can carry out the one or many extruding, to reach instructions for use according to the demand to material.
6, the present invention is applicable to the connection of various metal materials, as magnesium, aluminium, titanium, copper, zinc, nickel and steel etc., can carry out the selection and the collocation of material according to actual needs with the character of material.
7, the present invention can make between the material with big cross section the seam at the center of realization, and the seam of little cross section around being not only or between sheet material.
8, the present invention reaches the solid-state purpose of connecting of different alloys by the mould that can realize compressive stress state and detrusion.Choose suitable alloy combination, carry out detrusion, realize being connected by thermal diffusion and crystallization again in special dies (as the equal channel angular mould) lining.Heat-treat after the detrusion and promote the diffusion of crystallization again and atom, make the interface in conjunction with more firm.
Description of drawings
Fig. 1 (a)-Fig. 1 (b) is a detrusion mould schematic diagram, and Fig. 1 (c) is the mold cavity cross sectional shape.Wherein, head in 1; 2 molds (band heater); 3 passages; 4 blanks (workpiece).
The arrangement mode of Fig. 2 sample in mould.Wherein, (1) sample is series system up and down, and faying face is perpendicular to the compression of drift; (2) the sample faying face is perpendicular to the parallel way of sample export direction; (3) the sample faying face is parallel to the parallel way of sample export direction.
The joint geometry of sample during Fig. 3 series system.Wherein, (1) joint geometry is a tack; (2) joint geometry is a semicircle; (3) joint geometry is a groove.
Fig. 4 fine aluminium and photomacrograph after magnesium alloy is connected by detrusion by serial arrangement with different joint geometries.Wherein, the side of (1) sample; (2) the sample joint is a tack; (3) the sample joint is a cup head; (4) the sample joint is a flute profile.
Fig. 5 (a)-Fig. 5 (b) fine copper and magnesium alloy are realized photomacrograph after solid-state the connection with parallel way by detrusion.
The specific embodiment:
Shown in Fig. 1 (a)-Fig. 1 (c), the passage that has two cross sections to equate, intersect at a certain angle in Fig. 1 (a) shearing die, the interior angle of cut Φ scope of two passages is 50-170 °, external arc angle ψ scope is 0-170 °, vias inner walls has best bright finish, highly is 20-5000mm.Be provided with the passage 3 of logical pressure and shearing in the mold (band heater) 2, drift 1 is arranged at passage 3 one ends, is used for 4 extruding of the blank in the passage 3 are come out; Fig. 1 (b) is a multichannel detrusion mould intention, just material realizes that by three passages double detrusion accumulates high strain, passage 3 on three molds 2 is communicated with successively, wherein two adjacent passage 3 angle α are 30-90 °, two adjacent passage 3 angle β are 0-90 ° in addition, drift 1 is arranged at passage 3 one ends on the side form concrete 2, is used for extrusion billet 4; Fig. 1 (c) passage mold cavity shape of cross section also can be rectangle, trapezoidal or circle etc., a, and b, h, w, the size range of d is 5-1000mm.Fig. 2 is the arrangement mode of sample in mould.Wherein, (1) sample is series system up and down, and faying face is perpendicular to the compression of drift; (2) the sample faying face is perpendicular to the parallel way of sample export direction; (3) the sample faying face is parallel to the parallel way of sample export direction.Among Fig. 2, A, B represent the different-alloy material respectively.
Below in conjunction with embodiment in detail the present invention is described in detail:
I) alloying component:
II) concrete steps of equal channel angular extruding connection:
1) earlier ZW61 alloy and fine aluminium sheet material are carried out the joint preliminary treatment, on waterproof abrasive paper, polish behind the removal surface and oil contaminant, carry out drying then and handle.
2) material to be connected being cut to the cross section is 12mm * 12mm, and height is 50mm, and joint geometry is the rod of tack, semicircle, V-arrangement.
3) be that 12mm * 12mm, corner are that 90 ° equal channel angular mould is warming up to 300 ℃ with the die cavity sectional dimension, then with series system the ZW61 alloy down and fine aluminium put into the mould preheating last.
4), once push after 10 minutes 300 ℃ of insulations with the speed of 8mm/min.
5) extruding is finished the back at 300 ℃ of 1h that anneal.
III), the tissue topography after the connection:
1, use equal channel angular to connect after, with the connection material macro morphology of different joint geometries combinations as shown in Figure 4.
As shown in Figure 3-4, the material that forms with series system, different joint geometry seam of magnesium alloy and fine aluminium: the side of (1) difformity joint; (2) joint geometry is a tack; (3) joint geometry is a semicircle; (4) joint geometry is a groove.
I) alloying component:
II) concrete steps of equal channel angular extruding connection:
1) earlier the ZW61 alloy is connected surface preparation with fine copper sheet material, on waterproof abrasive paper, polishes behind the removal surface and oil contaminant, carry out drying then and handle.
2) fine copper being cut to the interface is 12mm * 4mm, and height is the cuboid of 100mm; It is 12mm * 8mm that ZW61 is cut to the interface, and height is the cuboid of 100mm.
2) be that 12mm * 12mm, corner are that 90 ° equal channel angular mould is warming up to 350 ℃ with the die cavity sectional dimension, with parallel way ZW61 alloy fine copper put into the mould preheating then.
3), once push after 10 minutes 350 ℃ of insulations with the speed of 8mm/min.
III), the photomacrograph after the connection is seen Fig. 5 (a)-Fig. 5 (b).
Experiment shows that the present invention reaches the solid-state purpose of connecting of different alloys by the mould that can realize compressive stress state and detrusion, and the interface is in conjunction with firm.
Claims (9)
1, a kind of different alloys compression realizes the solid-state method that is connected with detrusion, it is characterized in that: in parallel or series connection is stacked in the mould of realizing detrusion with two sections or multistage metal material; Then, blank is carried out detrusion make metal material pass through die channel in mould, realize the solid-state connection of dissimilar metal; Extrusion temperature is a room temperature to 1000 ℃, blank samming and be incubated 0-10h in mould, and the extruding rate scope is (10
-5-100)/s.
2, realize the solid-state method that is connected according to the described different alloys compression of claim 1 with detrusion, it is characterized in that: after realizing solid-state connection by the mould of detrusion, further carry out annealing in process and strengthen interface bond strength by thermal diffusion, annealing in process temperature range room temperature to 1000 ℃, temperature retention time 0.5-100h.
3, realize the solid-state method that is connected according to the described different alloys compression of claim 2 with detrusion, it is characterized in that: realize carrying out annealing in process after preliminary the connection through the extrusion shearing distortion, 200-1000 ℃ of annealing in process temperature preferable range, temperature retention time preferable range 0.5-10h; Directly anneal, perhaps adopt protective atmosphere to anneal, preferred argon gas of protective atmosphere or nitrogen.
4, realize the solid-state method that is connected according to the described different alloys compression of claim 1 with detrusion, it is characterized in that: the detrusion process is carried out one or many; When repeatedly shearing, metal material is consistent with the orientation with the initial direction of extrusion, perhaps along 90 ° of extruding axial rotation or 180 ° of extruding once more; The extrusion temperature preferable range is 100-800 ℃, and blank samming and temperature retention time preferable range in mould are 5min-3h; The extruding rate preferable range is (10
-3-1)/s.
5, realize the solid-state method that is connected according to the described different alloys compression of claim 1 with detrusion, it is characterized in that: be applicable to various metal materials, carry out the selection and the collocation of material according to actual needs with the character of material; When parallel way connects, the consistency of thickness of passages such as the thickness of every layer of metal material and shearing die, overall width is consistent with mould shearing width of channel, and flakiness ratio is selected arbitrarily; During series connection, the metal material cross sectional shape is identical with the mold sections geomery.
6, realize the solid-state method that is connected according to the described different alloys compression of claim 5 with detrusion, it is characterized in that: when for series system, metal head shapes to be connected is tack, V prefix, cup head or flute profile.
7, realize the solid-state method that is connected according to the described different alloys compression of claim 1 with detrusion, it is characterized in that: adopt special-purpose combined shear distortion mould, the extruding corner is 10 °-170 °; Mould has heating and temperature regulating device, and mold cavity width and thickness range are 5-5000mm; Altitude range 20-5000mm; Mold cavity cross section and blank shape of cross section are circle, square, rectangle, parallelogram, trapezoidal or " flute profile ".
8, realize the solid-state method that is connected according to the described different alloys compression of claim 7 with detrusion, it is characterized in that: the detrusion mould pushes preferable range 90-150 ° of corner; The preferable range 10-1000mm of mold cavity width and thickness, height preferable range 100-2000mm; The preferred square of mold cavity shape of cross section, rectangle or circle.
9, realize the solid-state method that is connected according to the described different alloys compression of claim 1 with detrusion, it is characterized in that: directly carry out detrusion after the material assembling; Perhaps before the detrusion processing beginning, carry out preliminary treatment and preheating as required;
Described preliminary treatment is: before shearing the processing beginning, the mating surface of blank is carried out preliminary treatment, use Mechanical Method, liquid to embathe method or physics, chemical method is removed surface attachments and oxide; Perhaps, adopt the preparation of chemistry or electrochemistry coating method to help compound rete.
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