CN105385869B - The preparation method of high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components - Google Patents
The preparation method of high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
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- C22C1/0458—Alloys based on titanium, zirconium or hafnium
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Abstract
The present invention relates to high-niobium TiAl intermetallic compound and the preparation method of TC4 titanium alloy composite components, filled altogether admittedly by using powder, TC4 titanium alloy powder preconditioning techniques, the process such as high-niobium TiAl intermetallic compound and TC4 titanium alloy high temperature insostatic pressing (HIP) Diffusion bonding techniques, high-niobium TiAl intermetallic compound can be realized with the high efficient and reliable welding that the welding position that TC4 titanium alloys are connected is under arbitrarily complicated shape type face, the high-niobium TiAl intermetallic compound prepared is reliable and stable with TC4 titanium alloy composite component welding performances, welding region is fine and close, without blind crack, strength of joint coefficient is high.
Description
Technical field
The present invention relates to high-niobium TiAl intermetallic compound and the preparation method of TC4 titanium alloy composite components, belong to new
Material new technology field.
Background technology
With the continuous improvement of flying speed and flying distance, lighting requirement of the model weapon to its heat resistant structure is got over
Come higher.At present, nickel base superalloy or steel alloy are mostly in 900~1100 DEG C or so the metal materials for using, its is close
Degree is in 8~9g/cm3Between, it is impossible to meet the demand of model structure light wt.The density of high-niobium TiAl intermetallic compound exists
4.0g/cm3 or so, at 900~1100 DEG C or so with superior high-temperature behavior, can turn into Ni-based height in this temperature range
The alternative materials of temperature alloy or steel alloy, so that the quality reduction by 50% or so of the part.
TC4 titanium alloys are one of lightweight structural materials for being most widely used in aerospace field.Therefore, high-Nb TiAl
The industrial applications of series intermetallic compound necessarily involve high-niobium TiAl intermetallic compound and are asked with the connection of TC4 titanium alloys
Topic.Because high-niobium TiAl intermetallic compound has brittleness at room temperature, with tradition such as argon arc welding, electron beam weldering, Laser Weldings
Fusion welding method during high-niobium TiAl intermetallic compound and TC4 titanium alloys connect, can be formed in welding region
Micro-crack；Current Pervasion Weld Technology, although including friction welding (FW), superplastic diffusion bonding and pressure diffusion welding (DW) can prepare niobium high
TiAl series intermetallic compound joints, but these process calls weld interface simple shapes, no-float, therefore cannot
Meet some demands to the complicated high-niobium TiAl intermetallic compound/TC4 titanium alloy composite components of weld interface requirement.
The content of the invention
It is an object of the invention to provide high-niobium TiAl intermetallic compound and the preparation side of TC4 titanium alloy composite components
Method, the method can prepare welding position and shape can be pre-designed, can be the type face of arbitrarily complicated shape, and welding performance
Reliable and stable, welding region is fine and close, without blind crack, strength of joint coefficient high-niobium TiAl intermetallic compound high and TC4
Titanium alloy composite component.
What above-mentioned purpose of the invention was mainly achieved by following technical solution：
High-niobium TiAl intermetallic compound and the preparation method of TC4 titanium alloy composite components, comprise the following steps：
(1), high-niobium TiAl intermetallic compound is processed into the shape of needs, will be changed between high-Nb TiAl system metal afterwards
Compound block and TC4 titanium alloy pre-alloyed powders are fitted into same jacket, and jacket is vacuumized at a certain temperature,
Meet vacuum in jacket and require rear enclosed jacket；
(2), jacket is put into hot isostatic apparatus, by pressurizeing, intensification is pre-processed；
(3), the temperature of jacket in hot isostatic apparatus is warming up to and requires temperature, carry out heat iso-hydrostatic diffusion welding connection；
(4), cool to jacket with the furnace room temperature, remove jacket, obtain high-niobium TiAl intermetallic compound and closed with TC4 titaniums
Golden composite component blank, and composite component blank is machined as needed.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, high-Nb TiAl
The position to be welded type face that series intermetallic compound is connected with TC4 titanium alloys can be to be pre-designed shape type face, including curved surface and
Plane.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, step (1) will
After high-niobium TiAl intermetallic compound is processed into the shape of needs, can high-niobium TiAl intermetallic compound component with
The position to be welded of TC4 titanium alloys connection adds metallic intermediate layer, and the metallic intermediate layer is：Pure Ni, Ti-15Ni-15Cu or
Person Ti3Al based alloys.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, using plating,
Metallic intermediate layer is attached to high-niobium TiAl intermetallic compound component position to be welded by the method for ion plating or arc deposited
Surface.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, in step (1)
The specific method vacuumized to jacket is：Pumpdown time >=1h at room temperature, treat vacuum in jacket better than 2 ×
10- 3After Pa, jacket is warming up to 250~300 DEG C, is incubated 2~3h；Treat that vacuum is better than 4 × 10 in jacket- 3After Pa, by jacket
600~800 DEG C are warming up to, soaking time >=6h treats that vacuum is better than 3 × 10 in jacket- 3Pa rear enclosed jackets.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, in step (1)
, used as the block for keeping solder type face, state can for fusing point high-niobium TiAl intermetallic compound higher in mother metal used by welding
It is as cast condition, forging state or powder metallurgy state compound；The relatively low TC4 titanium alloys of fusing point are made spherical pre-alloyed powder, powder
Granularity requirements for d≤180um logical powder.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, in step (2)
The concrete technology method for being pre-processed is：Jacket is fitted into hot isostatic apparatus, pressurization first makes in jacket pressure to 37
~45MPa, then heats to 650~820 DEG C, is incubated 1~2h.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, in step (3)
The concrete technology method for carrying out heat iso-hydrostatic diffusion welding connection is：Heating up first makes temperature in jacket be 900~950 DEG C, insulation 3
~4h, Stress control is incubated after terminating, furnace cooling to room temperature in the range of 130~150MPa.
In the preparation method of above-mentioned high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, the material of jacket
Expect to be mild steel, stainless steel or pure titanium material.
The present invention has the advantages that compared with prior art：
(1), the present invention is by using " Gu powder-common dress ", TC4 titanium alloy powders preconditioning technique, high-Nb TiAl system metal
Between the process such as compound and TC4 titanium alloy high temperature insostatic pressing (HIP) Diffusion bonding techniques, it is possible to achieve change between high-Nb TiAl system metal
Compound and the high efficient and reliable welding that the welding position that TC4 titanium alloys are connected is under arbitrarily complicated shape type face, the niobium high prepared
TiAl series intermetallic compounds are reliable and stable with TC4 titanium alloy composite component welding performances, welding region is fine and close, split without trickle
Line, strength of joint coefficient are high；
(2), high-niobium TiAl intermetallic compound prepared by the present invention is (with Ti-45Al-8.5Nb-0.2W-0.3B-
As a example by 0.02Y) with strength factor >=0.8 of TC4 titanium alloy composite-joints, high-niobium TiAl intermetallic compound closes with TC4 titaniums
Gold solder welding seam is reliable, flawless, and TC4 titanium alloy materials consistency exceedes 99%, the TC4 titanium alloy materials of solid density
Internal soundness can reach the A grades of level of GJB 1580A；
(3), the present invention passes through lot of experiments to " Gu powder-common dress ", TC4 titanium alloy powders preconditioning technique, high-Nb TiAl
Series intermetallic compound optimizes design with the process conditions of TC4 titanium alloy high temperature insostatic pressing (HIP) Diffusion bonding techniques, is obviously improved
The quality and performance of the composite component for preparing.
(4) welding position and shape that, high-niobium TiAl intermetallic compound of the present invention is connected with TC4 titanium alloys can be pre-
First design, can be the type face of arbitrarily complicated shape, implementation method is versatile and flexible, meets different structure needs, in addition the preparation
Method process is simple, it is easy to accomplish.
Brief description of the drawings
Fig. 1 is high-niobium TiAl intermetallic compound of the present invention and TC4 titanium alloy composite component preparation method flow charts；
Fig. 2 is high-Nb TiAl base intermetallic compound of the present invention and TC4 titanium alloys " Gu powder-common dress " process schematic representation；
Fig. 3 is high-Nb TiAl base intermetallic compound of the present invention with the metallographic structure figure of TC4 titanium alloy composite components (in band
Interbed metal)；
Fig. 4 is fracture apperance (the band centre of high-Nb TiAl base intermetallic compound of the present invention and TC4 titanium alloy composite components
Layer metal)；
Fig. 5 is high-Nb TiAl base intermetallic compound of the present invention with the metallographic structure figure of TC4 titanium alloy composite components (without in
Interbed metal)；
Fig. 6 is the fracture apperance of high-Nb TiAl base intermetallic compound of the present invention/TC4 titanium alloy composite components (without centre
Layer metal).
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Main innovation point of the invention is concentrated mainly on " Gu powder-common dress ", TC4 titanium alloy powders preconditioning technique, Gao Ni
The process such as TiAl series intermetallic compounds and TC4 titanium alloy high temperature insostatic pressing (HIP) Diffusion bonding techniques.
(1) the technique side of high-niobium TiAl intermetallic compound block and TC4 titanium alloys pre-alloyed powder " Gu powder-common dress "
Method
At present, common Diffusion bonding techniques can only weld shape matching simply and the preferable bimetallic that cooperates connects
Head, has very big difficulty for the complicated bimetal joint of weld interface shape matching.The present invention grinds in PM technique
On the basis of studying carefully, it is proposed that dystectic base material is made into block, low-melting base material is done into globulate pre-alloyed powder, utilized
The good mobility of spherical powder ensures that two kinds of base materials are in close contact at weld interface, is illustrated in figure 2 niobium high of the invention
TiAl base intermetallic compounds and TC4 titanium alloys " Gu powder-common dress " process schematic representation, 1 represents TC4 titanium alloy powders, 2 in figure
High-Nb TiAl powder is represented, 3 represent gas removing pipe, and 4 represent jacket.With " Gu powder-altogether dress " method proposed by the present invention, can be by
Requirement according to product prepares the weld interface of any shape, reaches the purpose that weld interface " can be pre-designed ".
(2) TC4 titanium alloys pre-alloyed powder preconditioning technique
In general, the diffusion welding (DW) temperature of bimetallic composite component is higher.At this temperature, two kinds of base materials be all easy to become
Shape, accordingly, it would be desirable to the base material to low melting point before diffusion welding (DW) temperature is reached carries out densification.
The present invention by lot of experiments on the basis of being studied, it is proposed that the pre-alloyed powder of low melting point base material is carried out pre-
The technology for the treatment of.During pre-processing, the pre-alloyed powder (being TC4 titanium alloys pre-alloyed powder in this method) of low melting material
It is densified completely in the range of certain relatively low hip temperature, and the shape of dystectic base material block is in this temperature
In the range of significant deformation will not occur.By pretreatment, the pre-alloyed powder of low melting point base material forms block, and on welding circle
It is in close contact with high-melting-point basis at face.
(3) high-niobium TiAl intermetallic compound and TC4 titanium alloy high temperature insostatic pressing (HIP) Diffusion bonding techniques
The technological parameter of conventional Pervasion Weld Technology is the spread condition for considering metallic intermediate layer, and without other side
Consider.Metallic intermediate layer and two kinds of bases are not only considered in the research process of high temperature insostatic pressing (HIP) Diffusion bonding techniques of the present invention
Phase counterdiffusion between material and it is necessary to consider the expansion between low melting point base material (being TC4 titanium alloys in the present invention) powder particle
Dissipate and high-niobium TiAl intermetallic compound material spreads the phase transformation in connection temperature range in this high temperature insostatic pressing (HIP).By a large amount of
Experimental study, applicant obtains optimal high-niobium TiAl intermetallic compound/TC4 titanium alloy heat iso-hydrostatic diffusion welding skills
The technological parameter of art.
On the basis of above-mentioned innovative point, applicant is prepared for weld interface by following process " can be set in advance
Meter ", the high-niobium TiAl intermetallic compound with weld strength higher/TC4 titanium alloy composite components.It is as shown in Figure 1 this
Invention high-niobium TiAl intermetallic compound and TC4 titanium alloy composite component preparation method flow charts.
Step (1), according to high-niobium TiAl intermetallic compound in composite component and the position at TC4 titanium alloy weldings interface
And shape, dystectic high-niobium TiAl intermetallic compound is processed into the block of given shape, the manufacture method of block can
Being the methods such as casting, thermal deformation or powder metallurgy.The shape of the privileged site shape of block and position and weld interface and
Position consistency；The TC4 titanium alloys of low melting point are made spherical pre-alloyed powder, granularity requirements the leading to for d≤180um of powder
Powder.
Step (2), high-niobium TiAl intermetallic compound block and TC4 titanium alloy pre-alloyed powders are fitted into jacket.
The material of jacket can be the materials such as mild steel, stainless steel or pure titanium.Then degasification (vacuumizing) is carried out to jacket.Degasification side
Method：Degasification time >=1h, treats that the vacuum in jacket is better than (being less than) 2 × 10 at room temperature- 3After Pa, jacket is warming up to 250
~300 DEG C, it is incubated 2~3h；Treat that vacuum is better than (being less than) 4 × 10 in jacket- 3After Pa, jacket is warming up to 600~800 DEG C,
Soaking time >=6h, treats that vacuum is better than (being less than) 3 × 10 in jacket- 3Pa rear enclosed jackets.
Step (3), jacket is put into hot isostatic apparatus, is pre-processed；The process of pretreatment is：First plus
Pressure makes pressure in jacket to 37~45MPa, then heat to 650~820 DEG C, is incubated 1~2h.Its effect is to ensure niobium high
While TiAl series intermetallic compounds appearance and size keeps stabilization, realize the densification completely of TC4 titanium alloy powders, and with height
Niobium TiAl series intermetallic compounds position to be welded keeps being fully contacted, it is ensured that high-niobium TiAl intermetallic compound and TC4 titaniums
There are no significant changes with position in the shape of alloy weld interface.
After step (4), completion pretreatment, the temperature of jacket in hot isostatic apparatus is warming up to and requires temperature, carry out heat
Isostatic pressed diffusion welding (DW) is connected；The technological parameter of heat iso-hydrostatic diffusion welding is：Heating up first makes temperature in jacket be 900~950 DEG C,
3~4h of insulation, Stress control is in the range of 130~150MPa.After insulation terminates, furnace cooling to the mode of room temperature is taken.
Step (5), after insulation terminates, be cooled to room temperature.
Step (6), removal bimetallic composite component outside jacket, then find high-niobium TiAl intermetallic compound with
TC4 titanium alloy two metal solders interface, on the basis of this weld interface, machine is carried out according to the outward appearance of the composite component being pre-designed
Tool is processed, you can obtain high performance high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components.
High-niobium TiAl intermetallic compound prepared by the inventive method is (with Ti-45Al-8.5Nb-0.2W-0.3B-
As a example by 0.02Y) with strength factor >=0.8 of TC4 titanium alloy composite-joints；The high-Nb TiAl system metal formed by this technique
Between compound and TC4 titanium alloy weldings weld seam be reliable, flawless；The TC4 titanium alloy materials consistency prepared by this technique is surpassed
Cross the 99% of solid density.The internal soundness of the TC4 titanium alloy materials prepared by this technique can reach A grades of GJB 1580A
Level.
Embodiment 1
A kind of high-niobium TiAl intermetallic compound and the manufacture method of TC4 titanium alloy composite components, comprise the following steps：
(1), according to component use requirement, by high-niobium TiAl intermetallic compound Ti-45Al-8.5Nb-0.2W-0.3B-
0.02Y (at%) (hereinafter simply referred to as Ti-45Al-8.5Nb- (W, B, Y)) casting rod is processed into required shape；
(2) metallic intermediate layer Ti-15Ni-15Cu, is attached to Ti-45Al-8.5Nb- with the method for plating or ion plating
The surface of (W, B, Y)；Thickness is 150um.
(3) Ti-45Al-8.5Nb- (W, B, Y) material blocks and TC4 titanium alloys pre-alloyed powder load 20# low-carbon (LC)s after, processing
In steel capsule.
(4), jacket is connected on vacuum pump set and is vacuumized at room temperature, the time is 2h.
(5), treat that the vacuum in jacket is better than 1.5 × 10-3After Pa, jacket is put into heating furnace, is to slowly warm up to 300
DEG C, it is incubated 3h.Treat that vacuum is better than 3 × 10 in jacket- 3After Pa, jacket is warming up to 700 DEG C, soaking time is 8h.
(6), treat that vacuum is better than 2.5 × 10 in jacket- 3After Pa, jacket is taken out, with the method soldering and sealing bag of argon arc welding
Set.
(7), jacket is put into hot isostatic press, is pre-processed, pretreating process is：First suppress to 38MPa, then
750 ± 10 DEG C are to slowly warm up to, 1.5h is kept；
(8) after, insulation terminates, hot isostatic press is warming up to 920 ± 10 DEG C, keeps 3h, Stress control in 150MPa, so
After cool to room temperature with the furnace and come out of the stove.
(9), the 20# low-carbon (LC) steel capsules outside removal, block and TC4 titanium alloys are expected with Ti-45Al-8.5Nb- (W, B, Y)
On the basis of border, it is machined according to drawing requirement, so that it may which Ti-45Al-8.5Nb- (W, B, the Y)/TC4 needed for obtaining expands
Dissipate welding composite component.
The room temperature mechanical property of Ti-45Al-8.5Nb- (W, B, the Y)/TC4 Diffusion Welding composite components obtained using the present invention
Energy (tensile strength) is as shown in table 1 below, and microstructure is as shown in Figure 3, Figure 4.
The room-temperature mechanical property of the Ti-45Al-8.5Nb- of table 1 (W, B, Y)/TC4 Diffusion Welding composite components
It is illustrated in figure 3 the metallographic structure of high-Nb TiAl base intermetallic compound of the present invention and TC4 titanium alloy composite components
Figure (band metallic intermediate layer)；Fig. 4 is the fracture shape of high-Nb TiAl base intermetallic compound of the present invention and TC4 titanium alloy composite components
Looks (band metallic intermediate layer)；Welding region is fine and close as seen from the figure, without blind crack.The TC4 titaniums prepared by this technique are closed
Golden material density exceedes the 99% of solid density, and the internal soundness of the TC4 titanium alloy materials prepared by this technique can reach
The A grades of level of GJB 1580A.
Embodiment 2
A kind of high-niobium TiAl intermetallic compound and the manufacture method of TC4 titanium alloy composite components, comprise the following steps：
(1), according to component use requirement, by high-niobium TiAl intermetallic compound Ti-45Al-8Nb (at%) powder smelting
Golden bar is processed into required formation；
(2) Ti-45Al-8Nb material blocks and TC4 titanium alloys pre-alloyed powder load stainless steel 1Cr18Ni9Ti after, processing
In jacket steel capsule.
(3), jacket is connected on vacuum pump set and is vacuumized at room temperature, keep 2h.
(4), treat that the vacuum in jacket is better than 1 × 10-3After Pa, jacket is put into heating furnace, is to slowly warm up to 300
DEG C, it is incubated 3h.Treat that vacuum is better than 2 × 10 in jacket- 3After Pa, jacket is warming up to 780 DEG C, soaking time is 9h.
(5), treat that vacuum is better than 1.5 × 10 in jacket- 3After Pa, jacket is taken out, with the method soldering and sealing bag of argon arc welding
Set.
(6), jacket is put into hot isostatic press, is pre-processed, pretreating process is：First suppress to 45MPa, then
800 DEG C are to slowly warm up to, 2h is kept；
(7) after, insulation terminates, hot isostatic press is warming up to 910 DEG C, keeps 4h, Stress control is in 145MPa, Ran Housui
Stove is cooled to room temperature and comes out of the stove.
(8), the 1Cr18NI9Ti jackets outside removal, the border with Ti-45Al-8Nb material blocks and TC4 titanium alloys is as base
Standard, is machined according to drawing requirement, so that it may the Ti-45Al-8Nb/TC4 Diffusion Welding composite components needed for obtaining.
The room-temperature mechanical property (tensile strength) of the Ti-45Al-8Nb/TC4 Diffusion Welding composite components obtained with the present invention
As shown in table 2 below, microstructure is as shown in Figure 5, Figure 6.
The room-temperature mechanical property of the Ti-45Al-8Nb/TC4 Diffusion Welding composite components of table 2
It is illustrated in figure 5 the metallographic structure of high-Nb TiAl base intermetallic compound of the present invention and TC4 titanium alloy composite components
Figure (unrepeatered transmission metal)；Fig. 6 show the disconnected of high-Nb TiAl base intermetallic compound of the present invention/TC4 titanium alloy composite components
Degree of lip-rounding looks (unrepeatered transmission metal).Welding region is fine and close as seen from the figure, without blind crack.The TC4 prepared by this technique
Titanium alloy material consistency exceedes the 99% of solid density, and the internal soundness of the TC4 titanium alloy materials prepared by this technique can
Reach the A grades of level of GJB 1580A.
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (7)
1. the preparation method of high-niobium TiAl intermetallic compound and TC4 titanium alloy composite components, it is characterised in that：Including as follows
Step：
(1), high-niobium TiAl intermetallic compound is processed into the shape of needs, afterwards by high-niobium TiAl intermetallic compound
Block and TC4 titanium alloy pre-alloyed powders are fitted into same jacket, and jacket is vacuumized at a certain temperature, make bag
Vacuum satisfaction requires rear enclosed jacket in set；
(2), jacket is put into hot isostatic apparatus, by pressurizeing, intensification is pre-processed；
(3), the temperature of jacket in hot isostatic apparatus is warming up to and requires temperature, carry out heat iso-hydrostatic diffusion welding connection；
(4), cool to jacket with the furnace room temperature, remove jacket, obtain high-niobium TiAl intermetallic compound and answered with TC4 titanium alloys
Component blank is closed, and composite component blank is machined as needed；
After high-niobium TiAl intermetallic compound is processed into the shape of needs by the step (1), between high-Nb TiAl system metal
The position to be welded that chemical combination component of thing is connected with TC4 titanium alloys adds metallic intermediate layer, and the metallic intermediate layer is：Ti-15Ni-
15Cu or Ti3Al based alloys；
The concrete technology method pre-processed in the step (2) is：Jacket is fitted into hot isostatic apparatus, is pressurizeed first
Pressure in jacket to 37~45MPa, is then heated to 650~820 DEG C, be incubated 1~2h.
2. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：The position to be welded type face that the high-niobium TiAl intermetallic compound is connected with TC4 titanium alloys can be advance
Design shape type face, including curved surface and plane.
3. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：Between metallic intermediate layer is attached into high-Nb TiAl system metal using the method for plating, ion plating or arc deposited
Chemical combination component of thing position to be welded surface.
4. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：The specific method vacuumized to jacket in the step (1) is：Pumpdown time >=1h at room temperature,
Treat that the vacuum in jacket is better than 2 × 10- 3After Pa, jacket is warming up to 250~300 DEG C, is incubated 2~3h；Treat vacuum in jacket
Degree is better than 4 × 10- 3After Pa, jacket is warming up to 600~800 DEG C, soaking time >=6h, treat in jacket vacuum better than 3 ×
10- 3Pa rear enclosed jackets.
5. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：To be welded in the step (1) high-niobium TiAl intermetallic compound higher of fusing point in mother metal used as
The block in solder type face is kept, state can be as cast condition, forging state or powder metallurgy state compound；The relatively low TC4 titaniums of fusing point are closed
Gold is made spherical pre-alloyed powder, and the granularity requirements of powder are the logical powder of d≤180 μm.
6. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：The concrete technology method that heat iso-hydrostatic diffusion welding connection is carried out in the step (3) is：Heating up first makes jacket
Interior temperature is 900~950 DEG C, is incubated 3~4h, and Stress control is incubated after terminating, furnace cooling in the range of 130~150MPa
To room temperature.
7. the preparation method of high-niobium TiAl intermetallic compound according to claim 1 and TC4 titanium alloy composite components,
It is characterized in that：The material of the jacket is mild steel, stainless steel or pure titanium material.
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| CN106181250B (en) * | 2016-08-05 | 2018-07-03 | 航天材料及工艺研究所 | Xenogenesis composite component hot isostatic pressing diffusion connection preparation method |
| CN106584966B (en) * | 2016-12-21 | 2019-07-16 | 哈尔滨工业大学 | A kind of preparation method of Ti/Al/Cf laminar composite |
| CN108555305B (en) * | 2018-03-28 | 2020-10-20 | 西北工业大学 | Ti2Method for preparing annular piece from AlNb alloy and TiAl powder |
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| CN110607464B (en) * | 2019-08-21 | 2021-06-29 | 中国科学院金属研究所 | Hot isostatic pressing process of Ti2AlNb alloy powder |
| CN113059156A (en) * | 2019-12-13 | 2021-07-02 | 中南大学 | Adjustable deformation composite structure utilizing hydrogen induced expansion effect and preparation method and application thereof |
| CN111570795B (en) * | 2020-05-13 | 2022-04-19 | 中国航发北京航空材料研究院 | Preparation of Ti2Method for manufacturing ALNb/Ti60 double-alloy disk |
| CN116043053B (en) * | 2023-01-17 | 2023-07-21 | 哈尔滨工业大学 | High-niobium TiAl intermetallic compound with heterogeneous lamellar structure with alternate coarse and fine crystals and preparation method thereof |
| CN116460407A (en) * | 2023-04-21 | 2023-07-21 | 西安嘉业航空科技有限公司 | Copper alloy and alloy steel workpiece and hot isostatic pressing diffusion connection method thereof |
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| JP2005307297A (en) * | 2004-04-23 | 2005-11-04 | Fukuju Kogyo Kk | Metal product and its production method |
| CN101138790A (en) * | 2007-08-09 | 2008-03-12 | 航天材料及工艺研究所 | Method of preparing titanium steel composite liquid route connecting tube of the complex construction connecting surface |
| CN102554456B (en) * | 2012-02-24 | 2014-05-07 | 华北电力大学 | Diffusion welding method for titanium-aluminum based alloy and titanium alloy added amorphous interlayer |
| CN103469135B (en) * | 2013-09-12 | 2015-05-27 | 航天材料及工艺研究所 | Preparation method of high-niobium TiAl intermetallic compound |
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