CN108380893A - TiAl series intermetallic compound annulus hot isostatic pressing diffusion connection methods - Google Patents

TiAl series intermetallic compound annulus hot isostatic pressing diffusion connection methods Download PDF

Info

Publication number
CN108380893A
CN108380893A CN201810265636.7A CN201810265636A CN108380893A CN 108380893 A CN108380893 A CN 108380893A CN 201810265636 A CN201810265636 A CN 201810265636A CN 108380893 A CN108380893 A CN 108380893A
Authority
CN
China
Prior art keywords
jacket
annulus
tial
isostatic pressing
hot isostatic
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.)
Granted
Application number
CN201810265636.7A
Other languages
Chinese (zh)
Other versions
CN108380893B (en
Inventor
唐斌
朱雷
张晓强
寇宏超
李金山
王军
王毅
高文强
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.)
Northwestern Polytechnical University
Original Assignee
Northwestern Polytechnical University
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 Northwestern Polytechnical University filed Critical Northwestern Polytechnical University
Priority to CN201810265636.7A priority Critical patent/CN108380893B/en
Publication of CN108380893A publication Critical patent/CN108380893A/en
Application granted granted Critical
Publication of CN108380893B publication Critical patent/CN108380893B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B22F2003/153—Hot isostatic pressing apparatus specific to HIP

Abstract

A kind of TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method, using tooling reasonable for structure, in Ti2When AlNb powder is filled, 4 gas removing pipes are taken so that Ti2AlNb powder can be uniform, closely knit the inside for being distributed in TiAl alloy annulus, and filled by surplus, directly obtain flawless TiAl alloy and Ti2AlNb powder annulus.The configuration of the present invention is simple assembles simple, good manufacturability, and cost is relatively low, can one-pass molding TiAl series intermetallic compound ring components.The present invention once completes Ti by hot isostatic pressing method2AlNb powder molding and its with TiAl alloy and connection.It is not added with middle layer in connection, avoids the disadvantage that jointing is complicated, uncontrollable caused by generating numerous new conversion zones due to addition middle layer.

Description

TiAl series intermetallic compound annulus hot isostatic pressing diffusion connection methods
Technical field
The present invention relates to compound Diffusion bonding techniques fields between dissimilar metal.Specifically a kind of TiAl alloy annulus and Ti2The method of AlNb Powder hot isostatic pressures diffusion connection annulus.
Background technology
TiAl series intermetallic compounds are due to, specific strength low with density, specific stiffness height, high-temperature oxidation resistant and croop property The features such as excellent, it is considered to be to be most hopeful to substitute the novel light structural material of conventional high-temperature alloy, in vehicle turbine The fields such as booster, aero-engine, aerospace craft, which are gathered around, to have wide practical use.The wherein use temperature of TiAl alloy annulus Degree is 700~900 DEG C reachable, Ti2AlNb alloys temperature in use, can be respectively as disk edge and disc core material up to 650 DEG C.But its room Warm plasticity is relatively low, and difficult machine-shaping limits its extensive use.Hot isostatic pressing Diffusion bonding techniques are by hip treatment technique It combines together with Diffusion bonding techniques, is effectively shortened manufacturing process flow, reduce production cost, be to develop in recent years Rapid dissimilar metal Joining Technology, has original advantage in terms of preparing large-sized structural parts and near-net-shape.By this technique In preparation for TiAl series intermetallic compound structural members, it is greatly improved its utilization rate, extends its application, to the following TiAl The new direction of series intermetallic compound can do certain contribution.The present invention is based on hot isostatic pressing diffusion connecting process, have invented one Gu kind of TiAl series intermetallic compounds annulus powder-hot isostatic pressing preparation method, relates generally to Ti2AlNb powder and TiAl alloy Preparation method.
Currently, in terms of the connection of different alloys and the preparation of annular element, this seminar and domestic and foreign scholars A large amount of research and discussion have been carried out for no material.
Gang Yan institutes propose a kind of hot isostatic pressing diffusion connection system in 103447759 A innovation and creation of Publication No. CN The method of standby double-alloy blisk.This method is using FGH91 superalloy powders as FGH91 powder metallurgy turbine disks and essence The transition link layer of close casting K4188 blade ring connecting portions, reduces the diffusion of xenogenesis high temperature alloy blisk hot isostatic pressing The difficulty of connection improves the quality of Diffusion Bonding Joint.During hip treatment, suffered by the powder of central filler Pressure uniformity is limited, and interface is likely to micropore occur, influences joint performance.
Lang Ze treasured et al. is proposed in being in 105385869 B patents of invention of CN in notification number between high-Nb TiAl system metal The preparation method of compound and the compound structure of TC4 titanium alloys.It is by the method for plating, ion plating or arc deposited that middle layer is golden Category is attached to high-niobium TiAl intermetallic compound surface to be welded, then by high-niobium TiAl intermetallic compound block and TC4 titanium alloy pre-alloyed powders are fitted into jacket, are vacuumized, and hot isostatic pressing diffusion connection obtains connecing with superperformance Head.But the invention is not directed to the preparation of the complex structural members such as annulus, boss.
Tang Bin et al. is in the innovation and creation application No. is 201710018940.7 by strictly controlling diffusion connecting process It has been successfully connected TiAl alloy and Ti2AlNb alloys, it is proposed that a kind of high Nb containing TiAl based alloy and Ti2AlNb alloy diffusion connection sides Method.A kind of high temperature TiAl alloy and Ti are proposed in the innovation and creation application No. is 201710961380.92AlNb alloy hoops Shape part diffusion connection method.It is mainly the simple connection between two kinds of materials, and between powder sample and alloy sample The connection of complex structural member does not propose effective connection method.
Invention content
Gu to solve the deficiency that the prior art cannot be used for powder-hot isostatic pressing diffusion connection, the present invention proposes one kind TiAl series intermetallic compound annulus hot isostatic pressing diffusion connection methods.
The present invention detailed process be：
Step 1, it stocks up；The stock includes the Ti of the TiAl alloy annulus and preparation that make2AlNb powder；
It is 0~+0.01mm that the inner surface of the TiAl alloy annulus, which uses plus tolerance, precision,；In the TiAl alloy annulus Surface is polished to surface roughness and is less than 0.4.
The Ti of the preparation2The amount of AlNb alloy powders includes in the amount X and wedge structure of isometrical section of TiAl alloy annulus The feeding surplus Y in portion；Wherein X determines that Y is according to key groove α according to the outer diameter of the internal diameter of TiAl alloy annulus and jacket tube core It is determined with the height h of wedge structure；Wherein Y=X4%；The Ti2The granularity of AlNb alloy powders meets d≤100 μm.
Step 2, jacket component is made；
The jacket component includes jacket, jacket tube core and gas removing pipe；Gas removing pipe therein by total gas removing pipe, Five-way tube and Four points of gas removing pipes form；Jacket is made of upper jacket and lower jacket；In use, the lower face of the upper jacket and lower jacket It is welded between upper surface, forms jacket；The lower end of four points of gas removing pipes is respectively charged into and to be welded on the upper jacket upper surface equal In each point of venthole of even distribution；The upper end of each point of gas removing pipe is respectively charged into and is welded on the Five-way tube lower surface and is uniformly distributed Each point of venthole in；The lower end of total gas removing pipe is mounted in total venthole at Five-way tube upper surface center；The jacket Tube core is located in the jacket, and so that the upper end of the jacket tube core is packed into and be welded on the through-hole at the upper jacket upper surface center It is interior, so that the lower end of the jacket tube core is packed into and is welded in the through-hole at the lower jacket lower face center.
The Five-way tube is hollow disk, is useful for installing the total logical of total gas removing pipe at the center of the Five-way tube upper surface Stomata；In the uniformly distributed venthole that divides there are four for installing point gas removing pipe in the Five-way tube lower face, and each point of venthole is made to surround Total ventilation pore size distribution.
The upper jacket is divided into isometrical section and wedge-shaped segment；The outer diameter phase of isometrical section of the internal diameter and TiAl alloy annulus Together, and make the two clearance fit；The wedge-shaped segment is located at the center of isometrical section of upper head plate, and the wedge-shaped segment circumferential surface with should Angle α between upper jacket center line is 5 °~15 °, the internal diameter of the minimum diameter of the wedge-shaped segment and the TiAl alloy annulus It is identical；
The end face of the wedge-shaped segment is the upper surface of upper jacket；In the upper surface, center is useful for the logical of installation kit sleeving core Hole；The through-hole peripheral ring around uniformly distributed there are four dividing venthole, and make each point of venthole respectively under Five-way tube Each point of venthole of end face is concentric.
The internal diameter of the lower jacket is identical as the outer diameter of TiAl alloy annulus, and makes the two clearance fit；In the lower jacket Bottom plate center is useful for the through-hole of installation kit sleeving core, and the internal diameter of the through-hole is identical as the outer diameter of the jacket tube core.
The internal diameter of the lower jacket is identical as the outer diameter of TiAl alloy annulus, and makes the two clearance fit；In the lower jacket Bottom plate center is useful for the through-hole of installation kit sleeving core, and the internal diameter of the through-hole is identical as the outer diameter of the jacket tube core.Institute It is hollow revolving body to state jacket tube core；The internal diameter phase of the outer diameter of the jacket tube core and the structural member after hot isostatic pressing diffusion connection Together.
Step 3, it is surface-treated；
Step 4, Ti2The assembly of AlNb alloy powders and TiAl alloy annulus；
Ti is assembled in vacuum environment2AlNb alloy powders and TiAl alloy annulus；By TiAl alloy annulus to be connected It is packed into lower jacket；The lower end of the jacket tube core is welded in the through-hole on the lower jacket bottom plate；By the upper packet The lower face of set and the upper surface of the lower jacket are welded, and jacket is formed；Pass through four points of the upper jacket upper end EDS maps Venthole loads ready Ti into jacket2AlNb alloy powders make the Ti2AlNb alloy powders are filled in TiAl alloy Between annulus and jacket tube core；Ti is made by vibration when filling2The filling of AlNb alloy powders is enriched；By four points of gas removing pipes It is fixedly mounted with upper jacket and Five-way tube；Total gas removing pipe is packed in the Five-way tube upper surface；So far, Ti is completed2AlNb alloys The assembly of powder and TiAl alloy annulus.
Step 5, degassing processing；
Using vacuum pump group to the Ti after assembly2AlNb alloy powders carry out degassing processing with TiAl alloy annulus so that Vacuum degree inside jacket reaches 1 × 10-4Pa；Flame melts four points of gas removing pipes, closes jacket, obtains powder-and be fixedly mounted with accessory；
Step 6, hot isostatic pressing diffusion connection；
Obtained powder-is fixedly mounted with accessory and is placed on progress hot isostatic pressing diffusion connection processing in hot isostatic pressing stove；Specific mistake Cheng Shi：The hot isostatic pressing stove is warming up to 900~1050 DEG C with the heating rate of 50 DEG C/min；Pass through the pressure of hot isostatic pressing stove Force system is to applying the pressure of 110~160MPa and keeping 2~5h in the furnace chamber of the hot isostatic pressing stove；After pressurize, with stove It is cooled to room temperature；
Step 7, it post-processes；
After the completion of hot isostatic pressing diffusion connects, jacket component is removed by mechanical processing, and carries out machinery according to demand and adds Work；
So far, Ti is completed2AlNb alloy powders and the hot isostatic pressing diffusion of TiAl alloy annulus connect.
The present invention directly obtains flawless TiAl alloy and Ti by structure design, surplus filling2AlNb powder is justified Ring.It is simple in structure, assembly is simple, good manufacturability, cost is relatively low, can one-pass molding TiAl series intermetallic compound ring components. Wherein Ti2The granularity of AlNb alloy powders need to meet d≤100 μm.
In order to ensure that powder-is solidly connected combining closely for interface, using plane contact, therefore, the TiAl alloy in the present invention The inner surface of annulus will be parallel to central shaft, and surface wants smooth, non-oxidation layer, without oil stain.
It is so that Ti that the present invention, which takes the purpose of 4 gas removing pipes,2AlNb powder can be uniform, closely knit be distributed in TiAl The inside of alloy annulus.Upper jacket upper end inner surface is using wedge shape, to make up Ti in hot isostatic pressing2The contraction of AlNb powder Amount, obtains the more accurate component of size.In addition, in order to ensure Ti2The uniform stressed of AlNb powder and molding, it is desirable that jacket core Internal diameter r >=40mm of pipe.
The present invention once completes Ti by hot isostatic pressing method2AlNb powder molding and its with TiAl alloy and Connection；It is simple for process.In connection, it is not added with middle layer, avoids due to addition middle layer and generates numerous new conversion zones Caused by complicated, the uncontrollable disadvantage of jointing；By design, the present invention is met using wedge structure one When determining height, the demand of filling amount can be increased, while this also contributes to the connection of jacket component, assembling structure is simple, with simple, section About cost, good manufacturability.The principle of the present invention be under the conditions of high temperature, high pressure, long-time heat preservation, by TiAl alloy and Ti2The element in close contact, alloy between AlNb powder is quickly spread, single anti-to be formed by contact interface Articulamentum is answered, TiAl alloy annulus and Ti are obtained2AlNb powder connection members.Due in hot isostatic pressing, providing It is a comprehensive pressure, avoids stress concentration when conventional mechanical method applies stress, as shown in Figure 4；Therefore, sample Integrated stress in insulating process is evenly distributed, this is TiAl alloy and Ti2Connection between AlNb powder provides centainly Basis, be conducive to obtain dual alloy annulus.
Description of the drawings
Fig. 1 is the structural schematic diagram of jacket component, wherein Fig. 1 a are front views, and Fig. 1 b are the A-A direction views of Fig. 1 a, figure 1c is the B-B direction view of Fig. 1 a.
Fig. 2 is Ti2The assembling schematic diagram of AlNb alloy powders and TiAl alloy annulus.
Fig. 3 is Ti2The process curve of AlNb alloy powders and the diffusion connection of TiAl alloy annulus hot isostatic pressing.
Fig. 4 is sample integrated stress distribution map in 900 DEG C of -160MPa-5h condition insulating processes.
Fig. 5 is the flow chart of the present invention.
In figure：Jacket on 1.；2. lower jacket；3. point gas removing pipe；4. valve；5. Five-way tube；6. total gas removing pipe； 7.Ti2AlNb powder；8.TiAl alloy annulus；9. jacket tube core.
Specific implementation mode
The present invention is a kind of hot isostatic pressing diffusion connection TiAl alloy annulus and Ti2The method of AlNb powder will pass through three A embodiment detailed description of the present invention implementation process.
The present invention detailed process be：
Step 1, it stocks up.The stock includes the Ti of the TiAl alloy annulus and preparation that make2AlNb powder.
By design requirement, TiAl alloy forging stock is processed by TiAl alloy annulus by wire cutting.The TiAl alloy is justified It is 0~+0.01mm that the inner surface of ring, which uses plus tolerance, precision,.The TiAl alloy annulus is made of TiAl alloy forging； Surface roughness is polished to TiAl alloy circle ring inner surface and is less than 0.4.
The Ti2The granularity of AlNb alloy powders meets d≤100 μm.Ti2The amount of AlNb alloy powders includes that TiAl is closed The amount X of 8 isometrical sections of the golden annulus and feeding surplus Y inside wedge structure.Wherein X is according to the internal diameter and packet of TiAl alloy annulus 8 The outer diameter of sleeving core 9 determines that Y determines according to the height h of key groove α and wedge structure.Wherein Y=X4%.
Step 2, jacket component is made.
According to design, stainless steel is made using Sheet Metal Forming Technology and makes the jacket component.
The jacket component includes jacket, jacket tube core 9 and gas removing pipe.Gas removing pipe therein is by total gas removing pipe 6, Five-way tube 5 and four points of gas removing pipes 3 form；Jacket is made of upper jacket 1 and lower jacket 2.In use, the lower face of the upper jacket is under It is welded between the upper surface of jacket, forms jacket.The lower end of four points of gas removing pipes is respectively charged into and is welded on the upper jacket In the equally distributed each point of venthole in end face；The upper end of each point of gas removing pipe is respectively charged into and is welded on 5 lower surface of the Five-way tube In equally distributed each point of venthole, distribution is as illustrated in figure 1 c；It is mounted on valve 4 in each point of gas removing pipe.Always remove The lower end of tracheae 6 is mounted in total venthole at Five-way tube upper surface center.
The jacket tube core 9 is located in the jacket, and so that the upper end of the jacket tube core is packed into and be welded on the upper packet In the through-hole for covering 1 upper surface center, so that the lower end of the jacket tube core is packed into and be welded on the logical of 2 lower face center of the lower jacket In hole.
The Five-way tube 5 is hollow disk, is useful for installing the total of total gas removing pipe 6 at the center of the Five-way tube upper surface Venthole；In the uniformly distributed venthole that divides there are four for installing point gas removing pipe 3 in the Five-way tube lower face, and make each point of ventilation orifice ring Around total ventilation pore size distribution.
The upper jacket 1 is circular shell, and jacket is divided into isometrical section and wedge-shaped segment on this.Isometrical section of the internal diameter with The outer diameter of TiAl alloy annulus 8 is identical, and makes the two clearance fit.The wedge-shaped segment is located at the center of isometrical section of upper head plate, and And the wedge-shaped segment circumferential surface and angle α on this between jacket center line are 5 °~15 °, the minimum diameter of the wedge-shaped segment with The internal diameter of the TiAl alloy annulus 8 is identical.
The end face of the wedge-shaped segment is the upper surface of upper jacket；In the upper surface, center is useful for installation kit sleeving core 9 Through-hole；The through-hole peripheral ring around uniformly distributed there are four dividing venthole, and make each point of venthole respectively with positioned at Five-way tube Each point of venthole of lower face is concentric.
The lower jacket 2 is also circular shell.The internal diameter of the lower jacket is identical as the outer diameter of TiAl alloy annulus 8, and Make the two clearance fit.It is useful for the through-hole of installation kit sleeving core 9, and the internal diameter of the through-hole at the lower jacket bottom plate center It is identical as the outer diameter of the jacket tube core.
The axial length of isometrical section of the upper jacket is equal with the lower axial length of jacket.
The jacket tube core 9 is hollow revolving body.The outer diameter of the jacket tube core and the structure after hot isostatic pressing diffusion connection The internal diameter of part is identical.
Step 3, it is surface-treated.
After carrying out pickling processes to obtained TiAl alloy ring textures, immerse ultrasonic cleaning 15 in absolute ethyl alcohol~ 20min is placed in absolute ethyl alcohol and preserves, to wait for hot isostatic pressing diffusion connection.Meanwhile it is clear to carry out surface to the jacket component It washes and oil removing.
Step 4, Ti2The assembly of AlNb alloy powders and TiAl alloy annulus.
The lower jacket is placed in vacuum environment.TiAl alloy annulus to be connected is packed into lower jacket.By institute The lower end for stating jacket tube core 9 is welded in the through-hole on the lower jacket bottom plate.
The lower face of the upper jacket and the upper surface of the lower jacket are welded, jacket is formed.Upper and lower jacket weld Weld seam slope angle be β.
The jacket is placed on bobbing machine, is filled out into jacket by four points of ventholes of the upper jacket upper end EDS maps Fill ready Ti2AlNb alloy powders make the Ti2AlNb alloy powders are filled in TiAl alloy annulus 8 and jacket tube core 9 Between；Ti is made by vibration when filling2The filling of AlNb alloy powders is enriched.
Four points of gas removing pipes 3 are fixedly mounted with upper jacket and Five-way tube 5.Total gas removing pipe 6 is packed in the Five-way tube Upper surface.
So far, Ti is completed2The assembly of AlNb alloy powders and TiAl alloy annulus.
Step 5, degassing processing.
Using vacuum pump group to the Ti after assembly2AlNb alloy powders carry out degassing processing with TiAl alloy annulus so that Vacuum degree inside jacket reaches 1 × 10-4Pa.Melt four points of gas removing pipes 3 successively using flame, closes jacket, Gu obtain powder- Assembly parts.
Step 6, hot isostatic pressing diffusion connection.
Obtained powder-is fixedly mounted with accessory and is placed on progress hot isostatic pressing diffusion connection processing in hot isostatic pressing stove.Specific mistake Cheng Shi：The hot isostatic pressing stove is warming up to 900~1050 DEG C with the heating rate of 50 DEG C/min；Pass through the pressure of hot isostatic pressing stove Force system is to applying the pressure of 110~160MPa and keeping 2~5h in the furnace chamber of the hot isostatic pressing stove.After pressurize, with stove It is cooled to room temperature.
Step 7, it post-processes.
After the completion of hot isostatic pressing diffusion connects, jacket component is removed by mechanical processing, and carries out machinery according to demand and adds Work.
So far, Ti is completed2AlNb alloy powders and the hot isostatic pressing diffusion of TiAl alloy annulus connect.
The detailed process of each embodiment proposed by the present invention is identical, the difference is that carrying out hot isostatic pressing in each embodiment Spread the technological parameter of connection.
The technological parameter of the hot isostatic pressing diffusion connection of 1 each embodiment of table
The angle of jacket component wedge-shaped segment in 2 each embodiment of table
Embodiment 1 2 3
Angle α 5° 10° 15°

Claims (9)

1. a kind of TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method, which is characterized in that detailed process is：
Step 1, it stocks up：The stock includes the Ti of the TiAl alloy annulus and preparation that make2AlNb powder；
Step 2, jacket component is made；
Step 3, it is surface-treated；
Step 4, Ti2The assembly of AlNb alloy powders and TiAl alloy annulus；
Step 5, degassing processing：
Using vacuum pump group to the Ti after assembly2AlNb alloy powders carry out degassing processing with TiAl alloy annulus so that in jacket The vacuum degree in portion reaches 1 × 10-4Pa；Flame melts four points of gas removing pipes, closes jacket, obtains powder-and be fixedly mounted with accessory；
Step 6, hot isostatic pressing diffusion connection：
Obtained powder-is fixedly mounted with accessory and is placed on progress hot isostatic pressing diffusion connection processing in hot isostatic pressing stove；Detailed process is： The hot isostatic pressing stove is warming up to 900~1050 DEG C with the heating rate of 50 DEG C/min；Pass through the pressure system of hot isostatic pressing stove The pressure to applying 110~160MPa in the furnace chamber of the hot isostatic pressing stove of uniting simultaneously keeps 2~5h；After pressurize, furnace cooling To room temperature；
Step 7, it post-processes：
After the completion of hot isostatic pressing diffusion connection, jacket component is removed by mechanical processing, and be machined according to demand；
So far, Ti is completed2AlNb alloy powders and the hot isostatic pressing diffusion of TiAl alloy annulus connect.
2. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as described in claim 1, which is characterized in that institute The inner surface of TiAl alloy annulus is stated using plus tolerance, precision is 0~+0.01mm；The TiAl alloy circle ring inner surface is polished to Surface roughness is less than 0.4.
3. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as described in claim 1, which is characterized in that institute State the Ti of preparation2The amount of AlNb alloy powders includes more than the amount X of isometrical section of TiAl alloy annulus and the feeding inside wedge structure Measure Y；Wherein X determines that Y is according to key groove α and wedge structure according to the outer diameter of the internal diameter of TiAl alloy annulus and jacket tube core Height h determine；Wherein Y=X4%；The Ti2The granularity of AlNb alloy powders meets d≤100 μm.
4. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as described in claim 1, which is characterized in that institute It includes jacket, jacket tube core and gas removing pipe to state jacket component；Gas removing pipe therein is by total gas removing pipe, Five-way tube and four points of degasification Pipe forms；Jacket is made of upper jacket and lower jacket；In use, between the lower face of the upper jacket and the upper surface of lower jacket Welding forms jacket；The lower end of four points of gas removing pipes is respectively charged into and to be welded on the upper jacket upper surface equally distributed each Divide in venthole；The upper end of each point of gas removing pipe is respectively charged into and is welded on the equally distributed each point of ventilation in the Five-way tube lower surface In hole；The lower end of total gas removing pipe is mounted in total venthole at Five-way tube upper surface center；
The jacket tube core is located in the jacket, and so that the upper end of the jacket tube core is packed into and be welded on the upper jacket upper end In the through-hole at face center, so that the lower end of the jacket tube core is packed into and be welded in the through-hole at the lower jacket lower face center.
5. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as claimed in claim 2, which is characterized in that institute The Five-way tube stated is hollow disk, is useful for installing total venthole of total gas removing pipe at the center of the Five-way tube upper surface；At this The uniformly distributed venthole that divides there are four for installing point gas removing pipe in Five-way tube lower face, and make each point of venthole around total ventilation Pore size distribution.
6. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as claimed in claim 2, which is characterized in that institute It states jacket and is divided into isometrical section and wedge-shaped segment；Both isometrical section of the internal diameter is identical as the outer diameter of TiAl alloy annulus, and make Clearance fit；The wedge-shaped segment is located at the center of isometrical section of upper head plate, and the wedge-shaped segment circumferential surface and jacket center on this Angle α between line is 5 °~15 °, and the minimum diameter of the wedge-shaped segment is identical as the internal diameter of TiAl alloy annulus；
The end face of the wedge-shaped segment is the upper surface of upper jacket；In the upper surface, center is useful for the through-hole of installation kit sleeving core； The through-hole peripheral ring around uniformly distributed there are four dividing venthole, and make each point of venthole respectively with positioned at Five-way tube lower face Each point of venthole it is concentric.
7. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as claimed in claim 2, which is characterized in that institute The internal diameter for stating lower jacket is identical as the outer diameter of TiAl alloy annulus, and makes the two clearance fit；At the lower jacket bottom plate center It is useful for the through-hole of installation kit sleeving core, and the internal diameter of the through-hole is identical as the outer diameter of the jacket tube core.
8. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as claimed in claim 2, which is characterized in that institute It is hollow revolving body to state jacket tube core；The internal diameter phase of the outer diameter of the jacket tube core and the structural member after hot isostatic pressing diffusion connection Together.
9. TiAl series intermetallic compounds annulus hot isostatic pressing diffusion connection method as described in claim 1, which is characterized in that Ti is assembled in vacuum environment2AlNb alloy powders and TiAl alloy annulus；TiAl alloy annulus to be connected is packed into lower jacket It is interior；The lower end of the jacket tube core is welded in the through-hole on the lower jacket bottom plate；By the lower face of the upper jacket It is welded with the upper surface of the lower jacket, forms jacket；By four points of ventholes of the upper jacket upper end EDS maps to packet Ready Ti is loaded in set2AlNb alloy powders make the Ti2AlNb alloy powders are filled in TiAl alloy annulus and jacket Between tube core；Ti is made by vibration when filling2The filling of AlNb alloy powders is enriched；By four points of gas removing pipes and upper jacket and Five-way tube is fixedly mounted with；Total gas removing pipe is packed in the Five-way tube upper surface；So far, Ti is completed2AlNb alloy powders and TiAl The assembly of alloy annulus.
CN201810265636.7A 2018-03-28 2018-03-28 TiAl series intermetallic compound circular hot isostatic pressing diffusion connection method Active CN108380893B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810265636.7A CN108380893B (en) 2018-03-28 2018-03-28 TiAl series intermetallic compound circular hot isostatic pressing diffusion connection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810265636.7A CN108380893B (en) 2018-03-28 2018-03-28 TiAl series intermetallic compound circular hot isostatic pressing diffusion connection method

Publications (2)

Publication Number Publication Date
CN108380893A true CN108380893A (en) 2018-08-10
CN108380893B CN108380893B (en) 2020-11-03

Family

ID=63072979

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810265636.7A Active CN108380893B (en) 2018-03-28 2018-03-28 TiAl series intermetallic compound circular hot isostatic pressing diffusion connection method

Country Status (1)

Country Link
CN (1) CN108380893B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109676140A (en) * 2019-02-26 2019-04-26 北京航空航天大学 A kind of hot isostatic pressing joint forming annular element jacket
CN110666174A (en) * 2019-10-23 2020-01-10 航天材料及工艺研究所 Method for improving end face buckling deformation of hot isostatic pressing powder metallurgy flat component
CN110947970A (en) * 2019-12-05 2020-04-03 中国航发北京航空材料研究院 Near-net forming method for thin-wall complex component
CN112746232A (en) * 2020-12-28 2021-05-04 西北工业大学 Method for improving strong plasticity of beta-type gamma-TiAl alloy

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002212609A (en) * 2001-01-09 2002-07-31 Daido Steel Co Ltd Method for producing composite cylinder of intermetallic compound and metal
EP1649954A2 (en) * 2004-10-20 2006-04-26 United Technologies Corporation Low porosity powder metallurgy produced components
CN104498748A (en) * 2014-11-18 2015-04-08 航天材料及工艺研究所 Preparation method of high performance powder metallurgy high-niobium TiAl line intermetallic compound
US20150129583A1 (en) * 2012-04-13 2015-05-14 MTU Aero Engines AG METHOD FOR PRODUCING LOW-PRESSURE TURBINE BLADES FROM TiAl
CN105385869A (en) * 2015-10-30 2016-03-09 航天材料及工艺研究所 Manufacturing method for high-niobium TiAl system intermetallic compound and TC4 titanium alloy composite component
CN106808079A (en) * 2017-01-11 2017-06-09 西北工业大学 A kind of TiAl alloy and Ti2The diffusion connection method of AlNb alloys
CN107745178A (en) * 2017-10-17 2018-03-02 西北工业大学 High temperature TiAl alloy and Ti2The diffusion connection method of AlNb alloy annular parts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002212609A (en) * 2001-01-09 2002-07-31 Daido Steel Co Ltd Method for producing composite cylinder of intermetallic compound and metal
EP1649954A2 (en) * 2004-10-20 2006-04-26 United Technologies Corporation Low porosity powder metallurgy produced components
US20150129583A1 (en) * 2012-04-13 2015-05-14 MTU Aero Engines AG METHOD FOR PRODUCING LOW-PRESSURE TURBINE BLADES FROM TiAl
CN104498748A (en) * 2014-11-18 2015-04-08 航天材料及工艺研究所 Preparation method of high performance powder metallurgy high-niobium TiAl line intermetallic compound
CN105385869A (en) * 2015-10-30 2016-03-09 航天材料及工艺研究所 Manufacturing method for high-niobium TiAl system intermetallic compound and TC4 titanium alloy composite component
CN106808079A (en) * 2017-01-11 2017-06-09 西北工业大学 A kind of TiAl alloy and Ti2The diffusion connection method of AlNb alloys
CN107745178A (en) * 2017-10-17 2018-03-02 西北工业大学 High temperature TiAl alloy and Ti2The diffusion connection method of AlNb alloy annular parts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109676140A (en) * 2019-02-26 2019-04-26 北京航空航天大学 A kind of hot isostatic pressing joint forming annular element jacket
CN110666174A (en) * 2019-10-23 2020-01-10 航天材料及工艺研究所 Method for improving end face buckling deformation of hot isostatic pressing powder metallurgy flat component
CN110666174B (en) * 2019-10-23 2022-03-04 航天材料及工艺研究所 Method for improving end face buckling deformation of hot isostatic pressing powder metallurgy flat component
CN110947970A (en) * 2019-12-05 2020-04-03 中国航发北京航空材料研究院 Near-net forming method for thin-wall complex component
CN110947970B (en) * 2019-12-05 2022-03-15 中国航发北京航空材料研究院 Near-net forming method for thin-wall complex component
CN112746232A (en) * 2020-12-28 2021-05-04 西北工业大学 Method for improving strong plasticity of beta-type gamma-TiAl alloy
CN112746232B (en) * 2020-12-28 2021-12-28 西北工业大学 Method for improving strong plasticity of beta-type gamma-TiAl alloy

Also Published As

Publication number Publication date
CN108380893B (en) 2020-11-03

Similar Documents

Publication Publication Date Title
CN108380893A (en) TiAl series intermetallic compound annulus hot isostatic pressing diffusion connection methods
CN108326317B (en) TiAl alloy and Ti2Method for preparing annular part from AlNb powder
KR101649010B1 (en) Multi-part piston for an internal combustion engine and method for the production thereof
CN106513685B (en) A kind of nearly molten state hot isostatic pressing net-shape method of powder
RU2010147810A (en) A COMPOSITE PREPARATION HAVING A MANAGED POROSITY PORT IN, AT LEAST, ONE LAYER, AND WAYS OF ITS MANUFACTURE AND USE
JP6170159B2 (en) Aluminum brazing of hollow titanium fan blades
CN105170978B (en) Linkage interface has the homogeneity jacket high temperature insostatic pressing (HIP) manufacturing process of gradient structure
CN108555305A (en) Ti2The method that AlNb alloys and TiAl powder prepare annular element
US20060266801A1 (en) Assembly and method for manufacture of component by hot isostatic pressing
CN109570765A (en) A kind of manufacturing method that titanium alloy is connect with nickel base superalloy laser gain material
JPH03243223A (en) Manufacture of gold club head
CN104942262B (en) Functional gradient die-casting die and manufacturing process thereof
CN104607725B (en) Bimetallic gear cutting tool and bimetallic complex method
CN101138790A (en) Method of preparing titanium steel composite liquid route connecting tube of the complex construction connecting surface
CN108526676A (en) Hot isostatic pressing diffusion connection TiAl alloy and Ti2The method of AlNb alloy annular parts
CN110172691A (en) A method of mould structure and performance are changed by laser melting coating
EP3345708B1 (en) Method of feeding a braze filler to a joint, brazed article, and braze assembly
CN109848665A (en) The preparation method of overlay clad hot-work die
CN109365981A (en) A kind of connection method of stainless steel sleeve and brass billet
CN113290254B (en) Composite manufacturing method of metal part
JP6410135B2 (en) Hot forging die
JPS61186406A (en) Nozzle for injection molding machine having excellent resistance to wear and corrosion and its production
CN106271381B (en) A kind of seal assembly and its processing method
CN114473169B (en) Diffusion welding method for bimetal cylindrical surface-shaped structure wind tunnel electrode
CN216279203U (en) Composite worm wheel for speed reducer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant