CN109295342A - A kind of Ti-Al-Mo-Sn-Zr-Si-V alloy and preparation method thereof - Google Patents
A kind of Ti-Al-Mo-Sn-Zr-Si-V alloy and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C14/00—Alloys based on titanium
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- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The present invention relates to a kind of Ti-Al-Mo-Sn-Zr-Si-V alloys and preparation method thereof, belong to the preparation method technical field of alloy material.The composition of alloy element and mass fraction are as follows: Al 5.0%~6.9%, Mo 5.0%~7.1%, Sn 0.9%~3.1%, Zr 2.1%~3.9%, Si 0.01%~0.3%, V 0.5%~1.5%, Fe < 0.1, O < 0.2, N < 0.05, H < 0.01, C < 0.04, Ti surplus；The alloy is made by preforming combine with vacuum self-consumption electrode arc melting technology of electrode block.It is forged after the alloy melting without systematization, heat treatment, deformation processing just has very high tensile strength, yield strength and elongation percentage；Described preparation method is simple, and the period is short, practical, is conducive to industrialize.
Description
Technical field
The present invention relates to a kind of Ti-Al-Mo-Sn-Zr-Si-V alloys and preparation method thereof, belong to the preparation of alloy material
Method and technology field.
Background technique
Aeronautical material and its technology of preparing are one of big key technologies of aviation three, are the important material bases of aeronautical product.
Meanwhile it is also in materials science field rich in a creative and ground-breaking important branch.Currently, dual-use flight
Device is higher and higher to reliability, safety, economy, advance and some other particular/special requirements so as to aeronautical material and
The requirement of material property standard is also more harsh.The research and development of aeronautical material and application level also reflect that a national synthesis is real
Power and scientific and technological level.Therefore, aeronautical material belonged in every country first develop, the key technology that emphasis is dived.
Now widely used airframe material is mainly that steel, aluminium alloy and titanium alloy are these three types of.The wherein intensity of steel
Highest, dosage accounts for about 5% in service aircraft, is mainly used in important bearing member, such as: undercarriage, spar and load bolt.
But the density of steel is very big, corrosion resistance is poor, and fracture toughness is general, therefore limits its application.Aluminium alloy is aircraft knot
Since the important materials of structure, the especially eighties, 7075,2124,7150,2524,7055 and 2197 newly succeeded in developing are contour
Performance aluminium alloy meets the needs of multirole fighter design and select material.Although aluminium alloy maximum pulling strength can reach 700MPa
More than, it is still difficult to meet the performance requirement of many aerospace components (wing and rear body).
Titanium alloy is a kind of advanced light-weight metal, density 4.5g/cm3, it is widely used in wing and rear body.Such as
The usage amount of titanium alloy is up to 41% in U.S.'s invisbile plane F-22 body.However added element is different in titanium alloy, meeting
The titanium alloy mechanical property resulted in is different.The superhigh intensity titanium alloy being widely used at present mainly have TB6, TC18 and
TC21 etc., forging state can only achieve following index: tensile strength 1100MPa, yield strength 1000MPa, elongation percentage 8% at present
Left and right.
How to improve the alloying element of addition further to regulate and control the comprehensive mechanical property of titanium alloy, meets it higher
The application demand in the fields such as aviation is current scholars problem of concern.
Summary of the invention
In view of this, one of the objects of the present invention is to provide a kind of Ti-Al-Mo-Sn-Zr-Si-V alloys；
The second object of the present invention is to provide a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy, the side
Method combines realization with vacuum self-consumption electrode arc melting technology by the way that electrode block is preforming.
The purpose of the present invention is realized by the following technical scheme.
A kind of Ti-Al-Mo-Sn-Zr-Si-V alloy is component in terms of 100% by the overall quality of the alloy
And its mass fraction is as follows:
A kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy of the present invention, the method comprises the following steps:
(1) raw material is put into cold press device, is more than or equal to 1000t/m2Pressure under squeeze rodlike consutrode is made
Block.
Preferred raw material are as follows: 0 grade of titanium sponge, Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V
Intermediate alloy and Al-10Si intermediate alloy；
It will be in Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V intermediate alloy and Al-10Si
Between alloy be fitted into after weighing in aluminium foil and prepare alloy packet, be then placed in 0 grade of titanium sponge and raw material be made；
It is preferred that 0 grade of titanium sponge is pre-processed using preceding using vacuum drying, to remove 0 grade of titanium sponge particles adsorption
Moisture and pernicious gas.
It is preferred that being dried in vacuo are as follows: drying temperature is 70 DEG C~200 DEG C, vacuum degree < 100Pa, and drying time is 0.5h~8h.
(2) rodlike consutrode block made from step (1) is subjected to melting three times with vacuum self-consumption electrode arc melting furnace,
Then feeding, then cool to furnace temperature with the furnace and come out of the stove lower than 300 DEG C；Surface oxide layer is removed after being cooled to room temperature, and obtains the present invention
A kind of Ti-Al-Mo-Sn-Zr-Si-V alloy.
Wherein, the reception device in vacuum self-consumption electrode arc melting furnace is the external copper earthenware with circulating cooling system
Crucible；
The actual conditions of the melting three times and feeding are as follows:
First time melting: in furnace vacuum degree be less than 20Pa, vacuum leak rate be less than or equal to 5Pa, melting electric current be 2300A~
5500A, melting voltage are 10V~30V, and cooling time is 0.2h~1.5h；
Second of melting: vacuum degree is less than or equal to 10Pa in furnace, and vacuum leak rate is less than or equal to 4Pa, and melting electric current is 4000A
~8500A, melting voltage are 18V~35V, and cooling time is 0.5h~2.5h；
Third time melting and feeding: vacuum degree is less than or equal to 5Pa in furnace, and vacuum leak rate is less than or equal to 4Pa, and melting electric current is
4500A~15000A, melting voltage are 20V~40V, when melting stick ingot melting to remaining weight is consutrode block initial weight
5%~50% when initially enter feeding, current decrease rate reduces step by step according to 3 → 2 → 1 → 0.5 → 0.2 slope, directly
Until electric current reduces to the 1/3~1/20 of third time melting electric current.Cooling time is 0.5h~8h；
When the rodlike consutrode block is two pieces or more, first described two pieces or more of rodlike consutrode block is being less than
Equal to the weldering of vacuum group is carried out under 10Pa, one piece of rodlike consutrode block is made, then carried out with vacuum self-consumption electrode arc melting furnace
Melting.
It is first primary by described two pieces or more when the melting once stick ingot generated during the melting once is two pieces or more
Melting stick ingot carries out the weldering of vacuum group in the case where being less than or equal to 10Pa, one piece of melting once stick ingot is made, then carry out second of melting.
It is first secondary by described two pieces or more when the secondary smelting stick ingot generated during the secondary smelting is two pieces or more
Melting stick ingot carries out the weldering of vacuum group in the case where being less than or equal to 5Pa, one piece of secondary smelting stick ingot is made, then carry out third time melting.
Vacuum plasma welding box can be used and carry out the weldering of vacuum group.
Beneficial effect
1. the present invention provides a kind of Ti-Al-Mo-Sn-Zr-Si-V alloy, wherein the mass fraction of Al be 5.0%~
6.9%, it is middle equivalent, alloy density can be reduced, improves recrystallization temperature, intensity and (alpha+beta)/β transition point, and improve alloy
Antioxygenic property；The mass fraction of Mo is 5.0%~7.1% and middle equivalent, can effectively improve the intensity of the alloy,
Improve heat resistance and corrosion resistance；The mass fraction that the mass fraction of Sn is 0.9%~3.1%, Zr is 2.1%~3.9%, is
A small amount of addition phase, is neutral element, is added in titanium alloy together with other alloying elements, can play supplement solution strengthening effect；
Meanwhile the addition of Sn and Zr element to the adverse effect of the alloy moulding than addition Al element when it is small, this allows for described
Alloy has good machine-shaping property and welding performance；The mass fraction of Si is 0.01%~0.3%, on the low side is worked as to be medium
Amount, mainly plays solution strengthening effect, high-temerature creep drag can be improved；The mass fraction of V is 0.5%~1.5%, to add on a small quantity
Add, β phase can be stablized, increase harden ability, improves thermal stability, the alloy heat treatment reinforcement degree is remarkably reinforced；Fe's
Mass fraction is micro addition less than 0.1%, plays auxiliary dispersion-strengthened action；
2. being forged after the alloy melting without systematization the present invention provides a kind of Ti-Al-Mo-Sn-Zr-Si-V alloy
Make, be heat-treated, deformation processing just have very high tensile strength (> 1160MPa), yield strength (> 1000MPa) and elongation percentage (>
12%)；
3. the present invention provides a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy, the method is simple and easy,
Period is short, practical, is conducive to industrialize.
Detailed description of the invention
Fig. 1 is the photo of rodlike consutrode block made of embodiment 2.
Fig. 2 is the image of the sample starting the arc in vacuum self-consumption electrode arc melting furnace in 2 third time melting of embodiment.
Fig. 3 is that embodiment 2 comes out and cools down to the photo of the Ti-Al-Mo-Sn-Zr-Si-V alloy of room temperature.
Specific embodiment
Detailed elaboration is made to the present invention in the following with reference to the drawings and specific embodiments.
In following embodiment:
0 grade of titanium sponge is purchased from Zunyi Titanium Industry Co. Ltd., and grain shape is irregular polygon；Purity is greater than
Equal to 99.4wt%, hardness (HB) is 150.
The Ti-80Sn intermediate alloy selects CY0804-08, is purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and purity is greater than
Equal to 99.8wt%, partial size is less than or equal to 5mm.
The aluminium shot selects A11804-1, is purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and partial size is less than or equal to 10mm.
The Al-60Mo intermediate alloy selects Mo601709-H2, is purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and partial size is small
In equal to 5mm.
Zr bits are purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and thickness is less than or equal to 2mm, and largest cross-sectional sized is less than etc.
In 6mm.
The Al-80V intermediate alloy is purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and partial size is less than or equal to 5mm.
The Al-10Si intermediate alloy is purchased from the grand titanium scientific & trading Co., Ltd. in Beijing, and partial size is less than or equal to 5mm.
The cold press device is three beam and four-post hydraulic machine pressing machine of YW32-3000 ton, Shandong power heavy industry lathe Co., Ltd.
Vacuum self-consumption electrode arc melting furnace is VCF-800 type, Co., Ltd of Shenyang Vacuum Technology Institute.
Vacuum plasma welding box is VPW, Co., Ltd of Shenyang Vacuum Technology Institute.
The room temperature static stretch carries out on the in-situ stretching device (CS3400 type) of University of Science & Technology, Beijing, each sample
Test five times, takes its average value as the actual performance of sample.The following performance parameter of the available sample of this method: tension is strong
Degree, yield strength and elongation percentage.
The actual density is according to rule in national standard GB/T 1423-1996 " test method of noble metal and its alloy density "
Fixed method carries out.
The calculation formula of the consistency D are as follows: D=ρIt is practical/ρIt is theoretical× 100%, wherein ρIt is practicalIndicate actual density, ρIt is theoreticalTable
Show theoretical density.
The component of the alloy is tested according to national standard GB/T 31981-2015 " titanium or titanium alloy chemical composition analysis
Take method for making sample " specified in method carry out, specific test is completed by prestige Larry, Jiangsu new material Science and Technology Ltd..
Embodiment 1
(1) raw material in the present embodiment are as follows: 0 grade of titanium sponge, Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr
Bits, Al-80V intermediate alloy and Al-10Si intermediate alloy, element composition and its mass fraction in the raw material are as follows: Al 6.9%,
Mo 7.1%, Sn 0.9%, Zr 2.1%, Si 0.3%, V 0.5%, Fe 0.02%, O 0.05%, N 0.04%, H
0.004%, C 0.009%, Ti 82.077%.
Wherein, 0 grade of titanium sponge uses preceding pretreatment: in vacuum drying box in the case where vacuum degree is 20Pa, with 200 DEG C of dryings
0.5h。
It will be in Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V intermediate alloy, Al-10Si
Between alloy be fitted into after weighing in aluminium foil and prepare alloy packet, each alloy packet 1076g.
Then, alloy packet is put into the pretreated 0 grade of titanium sponge of 4924g, cold press device is put into, in 1100t/m2's
It is squeezed under pressure and rodlike consutrode block is made.
(2) rodlike consutrode block made from four pieces of steps (1) is true in the case where vacuum degree is 8Pa with vacuum plasma welding box
Sky group weldering, is made one piece of rodlike consutrode block, carries out melting three times using vacuum self-consumption electrode arc melting furnace, then mends
Contracting, then cool to furnace temperature with the furnace and come out of the stove for 290 DEG C, it is cooled to room temperature rear grinding machine and prunes except surface oxide layer, obtain the present invention
A kind of Ti-Al-Mo-Sn-Zr-Si-V alloy.
Wherein, the reception device in vacuum self-consumption electrode arc melting furnace is the external copper earthenware with circulating cooling system
Crucible.
The actual conditions of the melting three times and feeding are as follows:
First time melting: vacuum degree is 10Pa in furnace, and vacuum leak rate is 4Pa, and melting electric current is 5500A, and melting voltage is
30V, cooling time, 1.5h, obtained melting once stick ingot, diameter 130mm；
By two pieces of melting once stick ingots, with vacuum plasma welding box, the vacuum group in the case where vacuum degree is 7Pa is welded, and is made one piece one
Secondary melting stick ingot, then carry out second of melting；
Second of melting: vacuum degree 6Pa, vacuum leak rate are 3Pa, and melting electric current is 8500A, and melting voltage is 35V, cold
But the time is 2.5h, obtains secondary smelting stick ingot, diameter 170mm；
By two pieces of secondary smelting stick ingots, with vacuum plasma welding box, the vacuum group in the case where vacuum degree is 2Pa is welded, and is made one piece two
Secondary melting stick ingot, then carry out third time melting；
Third time melting: vacuum degree 2Pa, vacuum leak rate be 0.9Pa, melting electric current be 15000A, melting voltage 40V,
Feeding, electric current drop are initially entered when melting stick ingot melting to remaining weight is 5% (4.8kg) of consutrode block initial weight
Low rate reduces step by step according to 3 → 2 → 1 → 0.5 → 0.2 slope, until the 5000A that electric current reduces to third time melting electric current is
Only.Cooling time is 8h, obtains melting stick ingot three times, diameter 200mm.
Sample is made in Ti-Al-Mo-Sn-Zr-Si-V alloy made from the present embodiment to test, obtains test result
It is as follows:
(1) consistency of the alloy is 99.7%；
(2) mechanical property of the alloy: tensile strength 1176MPa；Yield strength is 1001MPa；Elongation percentage is
14.5%.
(3) the component test and result of alloy
Al 6.7%, Mo 7.0%, Sn 0.92%, Zr 2.11%, Si 0.28%, V 0.58%, Fe 0.02%, O
0.03%, N 0.03%, H 0.005%, C 0.008%, Ti 82.317%.
Embodiment 2
(1) raw material in the present embodiment are as follows: 0 grade of titanium sponge, Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr
Bits, Al-80V intermediate alloy and Al-10Si intermediate alloy, element composition and its mass fraction in the raw material are as follows: Al 5.0%,
Mo 5.0%, Sn 3.1%, Zr 3.9%, Si 0.01%, V 1.5%, Fe 0.03%, O 0.06%, N 0.03%, H
0.005%, C 0.01%, Ti 81.355%.
Wherein, 0 grade of titanium sponge uses preceding pretreatment: in vacuum drying box in the case where vacuum degree is 20Pa, with 70 DEG C of dryings
8h。
It will be in Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V intermediate alloy, Al-10Si
Between alloy be fitted into after weighing in aluminium foil and prepare alloy packet, each alloy packet 1124g.
Then, alloy packet is put into the pretreated 0 grade of titanium sponge of 4876g, cold press device is put into, in 1100t/m2's
It is squeezed under pressure and rodlike consutrode block is made, as shown in Figure 1, consutrode block inner pore is few, consistency is high, and forming degree is good,
And without the scaling-off bad phenomenons such as fall off.
(2) rodlike consutrode block made from four pieces of steps (1) is true in the case where vacuum degree is 8Pa with vacuum plasma welding box
Sky group weldering, is made one piece of rodlike consutrode block, carries out melting three times using vacuum self-consumption electrode arc melting furnace, then mends
Contracting, then cool to furnace temperature with the furnace and come out of the stove for 290 DEG C, it is cooled to room temperature, macro morphology is as shown in figure 3, melting three times as seen from the figure
The stick ingot riser following crystallization structural homogenity obtained afterwards is good, and molten last complete reservation, riser volume proportion are about
2.8%, then grinding machine is pruned except surface oxide layer, obtains a kind of Ti-Al-Mo-Sn-Zr-Si-V alloy of the present invention.
Wherein, the reception device in vacuum self-consumption electrode arc melting furnace is the external copper earthenware with circulating cooling system
Crucible.
The actual conditions of the melting three times and feeding are as follows:
First time melting: vacuum degree is 10Pa in furnace, and vacuum leak rate is 4Pa, and melting electric current is 3500A, and melting voltage is
15V, cooling time, 0.6h, obtained melting once stick ingot, diameter 130mm；
By two pieces of melting once stick ingots, with vacuum plasma welding box, the vacuum group in the case where vacuum degree is 7Pa is welded, and is made one piece one
Secondary melting stick ingot, then carry out second of melting；
Second of melting: vacuum degree 6Pa, vacuum leak rate are 3Pa, and melting electric current is 4500A, and melting voltage is 20V, cold
But the time is 1h, obtains secondary smelting stick ingot, diameter 170mm；
By two pieces of secondary smelting stick ingots, with vacuum plasma welding box, the vacuum group in the case where vacuum degree is 2Pa is welded, and is made one piece two
Secondary melting stick ingot, then carry out third time melting；
Third time melting: vacuum degree 2Pa, vacuum leak rate are 0.9Pa, and melting electric current is 5500A, and melting voltage is 24V,
Sample starting the arc image is as shown in Figure 2 in vacuum self-consumption electrode arc melting furnace.Show to produce stabilization around melting stick ingot lower end
Arc discharge phenomenon, the electric arc thermal energy for generation of discharging is evenly distributed in its lower end；When melting stick ingot melting to remaining weight
For consutrode block initial weight 50% (48kg) when initially enter feeding, current decrease rate according to 3 → 2 → 1 → 0.5 →
0.2 slope reduces step by step, until electric current reduces to the 275A of third time melting electric current.Cooling time is 0.5h, obtains three
Secondary melting stick ingot, diameter 200mm；
Sample is made in Ti-Al-Mo-Sn-Zr-Si-V alloy made from the present embodiment to test, obtains test result
It is as follows:
(1) consistency of the alloy is 99.8%；
(2) mechanical property of the alloy: tensile strength 1203MPa；Yield strength is 1005MPa；Elongation percentage is
12.1%.
(3) the component test and result of alloy
Al 5.1%, Mo 5.2%, Sn 3.0%, Zr 3.8%, Si 0.013%, V 1.4%, Fe 0.02%,
O0.05%, N 0.02%, H 0.004%, C 0.02%, Ti 81.373%.
The present invention includes but is not limited to above embodiments, it is all carried out under the principle of spirit of that invention it is any equivalent
Replacement or local improvement, all will be regarded as within protection scope of the present invention.
Claims (8)
1. a kind of Ti-Al-Mo-Sn-Zr-Si-V alloy, it is characterised in that: by the overall quality of the alloy be 100% in terms of,
Component and its mass fraction are as follows:
2. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy as described in claim 1, the method step is such as
Under:
(1) raw material is put into cold press device, is more than or equal to 1000t/m2Pressure under squeeze rodlike consutrode block is made；
(2) rodlike consutrode block is subjected to melting three times with vacuum self-consumption electrode arc melting furnace, then feeding, then it is cold with furnace
But it comes out of the stove to furnace temperature lower than 300 DEG C；Surface oxide layer is removed after being cooled to room temperature, and obtains a kind of Ti-Al-Mo-Sn-
Zr-Si-V alloy.
3. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 2, it is characterised in that: true
Reception device in empty self-consumption electrode arc melting furnace is the external copper crucible with circulating cooling system；
The actual conditions of the melting three times and feeding are as follows:
First time melting: vacuum degree is less than 20Pa in furnace, and vacuum leak rate is less than or equal to 5Pa, and melting electric current is 2300A~5500A,
Melting voltage is 10V~30V, and cooling time is 0.2h~1.5h；
Second of melting: in furnace vacuum degree be less than or equal to 10Pa, vacuum leak rate be less than or equal to 4Pa, melting electric current be 4000A~
8500A, melting voltage are 18V~35V, and cooling time is 0.5h~2.5h；
Third time melting and feeding: vacuum degree is less than or equal to 5Pa in furnace, and vacuum leak rate is less than or equal to 4Pa, and melting electric current is
4500A~15000A, melting voltage are 20V~40V, when melting stick ingot melting to remaining weight is consutrode block initial weight
5%~50% when initially enter feeding, current decrease rate reduces step by step according to 3 → 2 → 1 → 0.5 → 0.2 slope, directly
Until electric current reduces to the 1/3~1/20 of third time melting electric current, cooling time is 0.5h~8h；
When the rodlike consutrode block is two pieces or more, first described two pieces or more of rodlike consutrode block is being less than or equal to
The weldering of vacuum group is carried out under 10Pa, one piece of rodlike consutrode block is made, then carry out melting with vacuum self-consumption electrode arc melting furnace；
When the melting once stick ingot generated during melting once is two pieces or more, first by described two pieces or more of melting once
Stick ingot carries out the weldering of vacuum group in the case where being less than or equal to 10Pa, one piece of melting once stick ingot is made, then carry out second of melting；
When the secondary smelting stick ingot generated during secondary smelting is two pieces or more, first by described two pieces or more of secondary smelting
Stick ingot carries out the weldering of vacuum group in the case where being less than or equal to 5Pa, one piece of secondary smelting stick ingot is made, then carry out third time melting.
4. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 2 or 3, it is characterised in that:
By Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V intermediate alloy and Al-10Si intermediate alloy dress
Enter to prepare alloy packet in aluminium foil, alloy packet is put into 0 grade of titanium sponge, raw material is made.
5. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 4, it is characterised in that: 0 grade
Titanium sponge is using preceding using vacuum drying pretreatment.
6. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 5, it is characterised in that: true
Empty drying temperature is 70 DEG C~200 DEG C, vacuum degree < 100Pa, and drying time is 0.5h~8h.
7. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 2 or 3, it is characterised in that:
The weldering of vacuum group is carried out using vacuum plasma welding box.
8. a kind of preparation method of Ti-Al-Mo-Sn-Zr-Si-V alloy according to claim 2 or 3, it is characterised in that:
By Ti-80Sn intermediate alloy, aluminium shot, Al-60Mo intermediate alloy, Zr bits, Al-80V intermediate alloy and Al-10Si intermediate alloy dress
Enter to prepare alloy packet in aluminium foil, alloy packet is put into 0 grade of titanium sponge, raw material is made；
0 grade of titanium sponge is using preceding using vacuum drying pretreatment；Vacuum drying temperature is 70 DEG C~200 DEG C, vacuum degree < 100Pa,
Drying time is 0.5h~8h；
The weldering of vacuum group is carried out using vacuum plasma welding box.
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| CN111215623A (en) * | 2020-03-02 | 2020-06-02 | 北京理工大学 | Powder metallurgy densification pressureless sintering method of Ti-Al alloy |
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