CN106947885B - Strong high-ductility marine titanium alloy and its preparation process in one kind - Google Patents
Strong high-ductility marine titanium alloy and its preparation process in one kind Download PDFInfo
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 43
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005275 alloying Methods 0.000 claims abstract description 13
- ZXTFQUMXDQLMBY-UHFFFAOYSA-N alumane;molybdenum Chemical compound [AlH3].[Mo] ZXTFQUMXDQLMBY-UHFFFAOYSA-N 0.000 claims abstract description 8
- PTXMVOUNAHFTFC-UHFFFAOYSA-N alumane;vanadium Chemical compound [AlH3].[V] PTXMVOUNAHFTFC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 239000000470 constituent Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 8
- 238000005242 forging Methods 0.000 claims description 232
- 238000005266 casting Methods 0.000 claims description 24
- 230000009466 transformation Effects 0.000 claims description 16
- 238000007519 figuring Methods 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 15
- 238000005260 corrosion Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- 230000008439 repair process Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 238000003754 machining Methods 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Forging (AREA)
Abstract
The invention discloses it is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is prepared using titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure metal as raw material, and constituent component and its weight percent are respectively as follows: Ti 90.25%-93.0%, Al 2.5%~3.0%, Mo 2.0%~2.75%, Zr 2.0%~3.0%, V 0.5%~1.0%.In the method for the present invention, by rationally designing alloying component, pass through control alloying component proportion, reach the optimization of alloy processing performance, is conducive to improve finished product rate, the corrosion resistance of alloy is significantly improved compared with Ti75, Ti31 alloy, and preparation process simple possible of the present invention, good quality of product, qualification rate is high, is suitable for large-scale industrial production.
Description
Technical field
The invention belongs to titanium alloy material preparation technical fields, and in particular to strong high-ductility marine titanium alloy during one kind is novel
And its preparation process.
Background technique
China has tentatively established the system of marine titanium alloy.Innovation has developed the other marine alloy of different intensity scale,
Pipe, plate, stick, the silk material etc. for preparing different size, can satisfy the demand of China's engineering substantially.Middle strength titanium alloy is due to it
Intensity is matched with the comprehensive performance of plasticity is most suitable for ocean military service environmental applications, therefore the attention by China's shipbuilding industry.Mesh
Strong high-ductility titanium alloy has TA24 (Ti75) alloy and TA22 (Ti31) alloy during preceding China is most widely used.Ti75 alloy is
Strong high tenacity corrosion resistant Ti alloy in 630MPa grades, suitable for manufacturing the components of complex-shaped plate stamping and welding,
It is widely applied in powerplant configuration, Ship Welding structural member.Ti31 alloy have in it is strong high-plastic, solderable and good cold plus
Work performance may be used as sonar dome, but at present still in conceptual phase.Although Ti75 alloy has obtained extensively at this stage
Using, but the forming difficulties such as tubing are easy to cause due to intensity, the situation of plasticity deficiency in production process, it is easy cracking etc. and adds
Work problem, it is therefore desirable to higher intensity and the matched marine titanium alloy of plasticity, to obtain preferably processing performance and use
Performance.It is all the important means of optimized alloy performance all the time by optimized alloy element proportion, in new material R&D process
The achievement of middle acquirement is significant.
Summary of the invention
The object of the present invention is to provide a kind of intensity matched with plasticity it is good it is novel in strong high-ductility marine titanium alloy, with
Change middle strength titanium alloy processing difficulties peculiar to vessel, service performance in actual production to be difficult to meet the status of actual demand.By reasonable
Alloying component is designed, optimized alloy performance improves alloy plasticity while guaranteeing alloy strength, reaches more preferably strong plasticity
Match.
To achieve the above object, the invention provides the following technical scheme:
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, constituent component and its weight percent be respectively as follows: Ti 90.25%~93.0%, Al 2.5%~
3.0%, Mo 2.0%~2.75%, Zr 2.0%~3.0%, V 0.5%~1.0%.
The invention also provides it is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carries out 3-5 vacuum consumable electric arc and melts
Refine into the titan alloy casting ingot for the 100kg that specification is Φ 150mm；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature be 1150 DEG C, the initial forging temperature of forging ratio 5.6, the second fire time cogging forging is 1050 DEG C, and forging ratio is
8.4, the initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；
Figuring of surface processing is carried out to titan alloy casting ingot after every fire time cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
At shape forging, the first fire time carries out after 2 upsettings 2 pull out forging, air-cooled, repairs wound, forging ratio 6, the second fire time 1 upsetting 2 of progress is pulled out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Technical effect and advantage of the invention: (1) in the method for the present invention, by rationally designing alloying component, make alloy
Room temperature tensile intensity be higher than 750MPa, there is alloy high plasticity to match, and plasticity is higher than 20%, the σ b >=750MPa, σ of alloy
S >=630MPa, δ >=20%, 60 DEG C, corrosion rate≤0.5 × 10 in 3.5%NaCl solution-4Mm/a, fracture toughness KIC high
In 95MPam1/2。
(2) by control alloying component proportion, reach the optimization of alloy processing performance, be conducive to improve finished product rate.
(3) corrosion resistance of alloy is significantly improved compared with Ti75, Ti31 alloy.
(4) preparation process simple possible of the present invention, good quality of product, qualification rate is high, is suitable for large-scale industrial production.
Specific embodiment
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 91.95%, Al 2.8%, Mo 2.5%, Zr
2.25%, V 0.5%.
It is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 3 vacuum consumable arc-meltings
The titan alloy casting ingot for the 100kg that specification is Φ 150mm is made；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4,
The initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after secondary cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire time under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
It is air-cooled after forging is pulled out in the first fire time 2 upsettings 2 of progress at shape forging, wound, forging ratio 6 are repaired, the second fire time carries out 1 upsetting 2 and pulls out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging material；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Room-temperature mechanical property after Ti75A titanium alloy rod bar normative heat treatment manufactured in the present embodiment and 60 DEG C,
Corrosion rate in 3.5%NaCl solution is shown in Table 1, as shown in Table 1 Ti75A titanium alloy large size bar manufactured in the present embodiment
Plasticity and toughness are excellent, and have good corrosion resistance.
Embodiment 2
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 91.5%, Al 3.0%, Mo 2.25%, Zr
2.5%, V 0.75%.
It is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 4 vacuum consumable arc-meltings
The titan alloy casting ingot for the 100kg that specification is Φ 150mm is made；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4,
The initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after secondary cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
At shape forging, the first fire time carries out after 2 upsettings 2 pull out forging, air-cooled, repairs wound, forging ratio 6, the second fire time 1 upsetting 2 of progress is pulled out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging material；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Room-temperature mechanical property after Ti75B titanium alloy rod bar normative heat treatment manufactured in the present embodiment and 60 DEG C,
Corrosion rate in 3.5%NaCl solution is shown in Table 1, as shown in Table 1 Ti75B titanium alloy large size bar manufactured in the present embodiment
Plasticity and toughness are excellent, and have good corrosion resistance.
Embodiment 3
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 91.6%, Al 3.0%, Mo 2.25%, Zr
2.25%, V 0.9%.
It is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 4 vacuum consumable arc-meltings
The titan alloy casting ingot for the 100kg that specification is Φ 150mm is made；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4,
The initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after secondary cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
At shape forging, the first fire time carries out after 2 upsettings 2 pull out forging, air-cooled, repairs wound, forging ratio 6, the second fire time 1 upsetting 2 of progress is pulled out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging material；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Room-temperature mechanical property after Ti75C titanium alloy rod bar normative heat treatment manufactured in the present embodiment and 60 DEG C,
Corrosion rate in 3.5%NaCl solution is shown in Table 1, as shown in Table 1 Ti75C titanium alloy large size bar manufactured in the present embodiment
Plasticity and toughness are excellent, and have good corrosion resistance.
Embodiment 4
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 91.5%, Al 3.0%, Mo 2.25%, Zr
2.75%, V 0.5%.
It is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 5 vacuum consumable arc-meltings
The titan alloy casting ingot for the 100kg that specification is Φ 150mm is made；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4,
The initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after secondary cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
At shape forging, the first fire time carries out after 2 upsettings 2 pull out forging, air-cooled, repairs wound, forging ratio 6, the second fire time 1 upsetting 2 of progress is pulled out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging material；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Room-temperature mechanical property after Ti75D titanium alloy rod bar normative heat treatment manufactured in the present embodiment and 60 DEG C,
Corrosion rate in 3.5%NaCl solution is shown in Table 1, as shown in Table 1 Ti75D titanium alloy large size bar manufactured in the present embodiment
Plasticity and toughness are excellent, and have good corrosion resistance.
Embodiment 5
It is a kind of it is novel in strong high-ductility marine titanium alloy, the titanium alloy is with titanium sponge, aluminium molybdenum, aluminium vanadium intermediate alloy, pure
Metal is raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 91.1%, Al 3.0%, Mo 2.25%, Zr
2.75%, V 0.9%.
It is a kind of it is novel in strong high-ductility marine titanium alloy preparation process, comprising the following steps:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 5 vacuum consumable arc-meltings
The titan alloy casting ingot for the 100kg that specification is Φ 150mm is made；Ingot casting is subjected to 3 fire time cogging forgings, first time cogging forging
Initial forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4,
The initial forging temperature of third fire time cogging forging is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after secondary cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire
The forging ratio of secondary upsetting pull forging is 5.6, obtains intermediate forging stock；Surface is carried out to primary forging stock after every fire time upsetting pull forging to repair
Mill processing；
S3, the intermediate forging stock in step S2 is subjected to 2 fire under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
At shape forging, the first fire time carries out after 2 upsettings 2 pull out forging, air-cooled, repairs wound, forging ratio 6, the second fire time 1 upsetting 2 of progress is pulled out, water
Cold, forging ratio 4.6 obtains final titanium alloy forging material；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more,
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after machining.
Room-temperature mechanical property after Ti75E titanium alloy rod bar normative heat treatment manufactured in the present embodiment and 60 DEG C,
Corrosion rate in 3.5%NaCl solution is shown in Table 1, as shown in Table 1 Ti75E titanium alloy large size bar manufactured in the present embodiment
Plasticity and toughness are excellent, and have good corrosion resistance.
The corrosion rate table of the titanium alloy rod bar of different embodiment preparations:
The mechanical performance data of the titanium alloy of 1 embodiment of the present invention 1 to 5 of table preparation
As shown in Table 1, titanium alloy prepared by the present invention has excellent mechanical property.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (2)
1. strong high-ductility marine titanium alloy in one kind, which is characterized in that the titanium alloy among titanium sponge, aluminium molybdenum, aluminium vanadium to close
Gold, pure metal are raw material preparation, and constituent component and its weight percent are respectively as follows: Ti 90.25%~93.0%, Al
3.0%, Mo 2.25%~2.75%, Zr 2.25%~3.0%, V 0.5%~1.0%；
In described strong high-ductility marine titanium alloy preparation method the following steps are included:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 3-5 vacuum consumable arc-melting system
At the titan alloy casting ingot for the 100kg that specification is Φ 150mm；Ingot casting is subjected to 3 fire time cogging forgings, the beginning of first time cogging forging
Forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4, the
The initial forging temperature of three fire time cogging forgings is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire time upsetting
The forging ratio for pulling out forging is 5.6, obtains intermediate forging stock；Primary forging stock is carried out at figuring of surface after every fire time upsetting pull forging
Reason；
S3, the forming that the intermediate forging stock in step S2 is carried out to 2 fire time under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
Forging, it is air-cooled after forging is pulled out in the first fire time 2 upsettings 2 of progress, wound, forging ratio 6 are repaired, the second fire time carries out 1 upsetting 2 and pulls out, water cooling, forging
It makes than being 4.6, obtains final titanium alloy forging；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more, it is mechanical
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after processing.
The preparation method of strong high-ductility marine titanium alloy during 2. one kind is described in claim 1, which is characterized in that including following step
It is rapid:
S1, titanium sponge and alloying element are suppressed to consutrode after mixing, then carry out 3-5 vacuum consumable arc-melting system
At the titan alloy casting ingot for the 100kg that specification is Φ 150mm；Ingot casting is subjected to 3 fire time cogging forgings, the beginning of first time cogging forging
Forging temperature is 1150 DEG C, forging ratio 5.6, and the initial forging temperature of the second fire time cogging forging is 1050 DEG C, forging ratio 8.4, the
The initial forging temperature of three fire time cogging forgings is 980 DEG C, and forging ratio 8.4 cuts blanking after forging, obtains primary forging stock；Every fire
Figuring of surface processing is carried out to titan alloy casting ingot after cogging forging；
S2, the upsetting pull forging that primary forging stock described in step S1 is carried out to 2 fire time under 920 DEG C of initial forging temperature, every fire time upsetting
The forging ratio for pulling out forging is 5.6, obtains intermediate forging stock；Primary forging stock is carried out at figuring of surface after every fire time upsetting pull forging
Reason；
S3, the forming that the intermediate forging stock in step S2 is carried out to 2 fire time under conditions of initial forging temperature is 70 DEG C of beta transformation point or more
Forging, it is air-cooled after forging is pulled out in the first fire time 2 upsettings 2 of progress, wound, forging ratio 6 are repaired, the second fire time carries out 1 upsetting 2 and pulls out, water cooling, forging
It makes than being 4.6, obtains final titanium alloy forging；
S4, the solution treatment and ageing treatment that titanium alloy forging obtained in step S3 is carried out to 20 DEG C of transformation temperature or more, it is mechanical
The titanium alloy rod bar that specification is 100 × 1800mm of Φ is obtained after processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013007.6A CN106947885B (en) | 2016-01-06 | 2016-01-06 | Strong high-ductility marine titanium alloy and its preparation process in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013007.6A CN106947885B (en) | 2016-01-06 | 2016-01-06 | Strong high-ductility marine titanium alloy and its preparation process in one kind |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106947885A CN106947885A (en) | 2017-07-14 |
| CN106947885B true CN106947885B (en) | 2019-08-16 |
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| CN111304493B (en) * | 2020-04-21 | 2022-03-15 | 重庆金世利航空材料有限公司 | Superstrong high-plasticity titanium alloy and preparation method thereof |
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| CN101407873A (en) * | 2008-11-21 | 2009-04-15 | 宝鸡钛业股份有限公司 | High-ductility medium-strength titanium alloy |
| CN104762576A (en) * | 2015-04-24 | 2015-07-08 | 西北有色金属研究院 | Method for manufacturing TC18 titanium alloy whole basket-weave microstructure medium-specification ultra-long bars |
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| CN102181747B (en) * | 2011-05-06 | 2012-09-26 | 中国航空工业集团公司北京航空材料研究院 | Alpha+beta type titanium alloy with high cold and hot forming properties |
| CN103510030B (en) * | 2013-09-23 | 2015-08-05 | 西北有色金属研究院 | A kind of preparation method of TC21 titanium alloy large size bar |
| CN104451491B (en) * | 2014-12-15 | 2016-11-30 | 西北有色金属研究院 | A kind of preparation method of Ti12LC titanium alloy forging |
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| CN101407873A (en) * | 2008-11-21 | 2009-04-15 | 宝鸡钛业股份有限公司 | High-ductility medium-strength titanium alloy |
| CN104762576A (en) * | 2015-04-24 | 2015-07-08 | 西北有色金属研究院 | Method for manufacturing TC18 titanium alloy whole basket-weave microstructure medium-specification ultra-long bars |
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