CN106119606A - A kind of WSTi45561 superhigh intensity titanium alloy and preparation method thereof - Google Patents
A kind of WSTi45561 superhigh intensity titanium alloy and preparation method thereof Download PDFInfo
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- CN106119606A CN106119606A CN201610738235.XA CN201610738235A CN106119606A CN 106119606 A CN106119606 A CN 106119606A CN 201610738235 A CN201610738235 A CN 201610738235A CN 106119606 A CN106119606 A CN 106119606A
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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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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The invention discloses a kind of WSTi45561 superhigh intensity titanium alloy, have following elementary composition according to percentage by weight: Al:3.0%～7.0%, Mo:2.0%～6.0%, V:2.0%～6.0%, Cr:2.0%～8.0%, Nb:0.0%～4.0%, Fe≤1.00%, O≤0.30%, surplus is Ti and inevitable impurity, and above weight percentages of components sum is 100%.The invention also discloses the preparation method of above-mentioned titanium alloy.The horizontal and vertical uniformity of superhigh intensity titanium alloy composition of the present invention is high, content reduces, successfully breach industry tonne big size ingot-casting chemical composition uniformity controlling technology, decrease aluminium element scaling loss in fusion process, it is to avoid high-melting-point molybdenum, vanadium and niobium element form the metallurgical imperfections such as niggerhead.
Description
Technical field
The invention belongs to titanium alloy technical field, be specifically related to a kind of WSTi45561 superhigh intensity titanium alloy, the present invention is also
Relate to the preparation method of above-mentioned WSTi45561 superhigh intensity titanium alloy.
Background technology
WSTi45561 nominal composition is Ti-4Al-5Mo-5V-6Cr-1Nb, is a kind of 1400MPa grade super strength nearly β type
Titanium alloy, belongs to Ti-Al-Mo-V-Cr series near β type titanium alloys with alloys such as TB16.WSTi45561 alloy has higher
Specific strength, temperature-room type plasticity, impact flexibility and fatigue behaviour, be important aerospace structure material.
In order to obtain the comprehensive matching of intensity, toughness and fatigue behaviour, WSTi45561 alloy with the addition of a large amount of molybdenum, chromium,
Vanadium, aluminum and a small amount of niobium element.Above-mentioned alloying element will occur volatilization in various degree in fusion process, finally determine
The chemical composition of titanium alloy.Compared with other element, under 2200K, the saturated vapour pressure of aluminium element is about 240Pa, molybdenum element
Saturated vapor pressure be 6.68 × 10-4The saturated vapor pressure of Pa, titanium and v element is 10-2The Pa order of magnitude, but titanium alloy melts
Point is close to 1900K, and the metallic element fusing point such as molybdenum, vanadium is higher, in order to accurately control ingot casting chemistry while ensureing abundant alloying
Composition, on the one hand needs to design the addition manner of alloying element, and another side needs to use vacuum consumable smelting mode, and optimizes
Smelting technology, final acquisition uniform technical grade WSTi45561 titan alloy casting ingot high-purity, high.
Use conventional vacuum consumable arc-melting technique, prepare consumable arc-melting with simple metal and titanium sponge form and use
Electrode block, then carry out twice vacuum consumable smelting, it is impossible to accurately control the constituent contents such as aluminum, molybdenum, vanadium and chromium, it is also possible to form richness
The niggerhead defect of niobium form.It addition, aluminum and chromium element easily form segregation at process of setting, under ingot chemistry uniformity
Fall.Therefore, mode of allocating into and the smelting technology of alloying element is key prepared by WSTi45561 alloy.
Summary of the invention
It is an object of the invention to provide a kind of WSTi45561 superhigh intensity titanium alloy, solve conventional method of smelting and prepare
The element segregation of WSTi45561 alloy generation and the metallurgical imperfection problem of rich niobium niggerhead.
It is a further object of the present invention to provide the preparation method of above-mentioned WSTi45561 superhigh intensity titanium alloy.
The technical solution adopted in the present invention is, a kind of WSTi45561 heat-resistant titanium alloy, has following according to percentage by weight
Elementary composition: Al:2.0%～6.0%, Mo:3.0%～7.0%, V:3.0%～7.0%, Cr:2.0%～8.0%, Nb:
0.0%～4.0%, Fe≤2.00%, O≤0.30%, surplus is Ti and inevitable impurity, and impurity element total amount is less than
0.20%, above weight percentages of components sum is 100%.
Feature of the present invention also resides in,
Molybdenum element derives from the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0%, and v element derives from content of vanadium
Being the graininess aluminum-vanadium alloy of 70.0%～90.0%, niobium element derives from the aluminum niobium that content of niobium is 70.0%～80.0% and closes
Gold.
Al element derives from aluminium shot and graininess aluminium molybdenum alloys, aluminum-vanadium alloy and aluminum niobium alloy；Cr element derives from
Granulated metal chromium.
Another kind of technical scheme of the present invention is, the preparation method of above-mentioned WSTi45561 superhigh intensity titanium alloy,
Specifically include following steps:
Step 1, prepares electrode:
By granular aluminium molybdenum alloys, aluminum-vanadium alloy, aluminum niobium alloy, and crome metal, aluminium shot and little participated sponge titanium enter
Row single-piece electrode batch mixing, and it is pressed into electrode block；
Step 2, welding consutrode:
The electrode block obtained by clamp step 1, uses non-tungsten electrode argon shield plasma case to be welded as by electrode block
Consutrode；
Step 3, uses vacuum consumable electrode arc furnace to carry out that step 2 obtains consutrode and carries out three vacuum melting, to obtain final product
To WSTi45561 titan alloy casting ingot.
The feature of the present invention also resides in,
The Theil indices considering shape titanium-tin alloy in step 1 to be worth doing is 65.0%～75.0%, and the content of niobium of bits shape niobium titanium alloy is
50.0%～56.0%, the silicone content of powder titanium silicon is 45.0%～55.0%, the molybdenum content of graininess aluminium molybdenum alloys
It is 60.0%～70.0%.
In step 2, electrode is octahedral electrode.
In step 3, the electric current of electrode welding is 200～400A, and weldingvoltage is 35～45V.
In step 3, melting once parameter is: crucible specification Φ 280～Φ 560mm, molten initial vacuum degree≤2.0Pa, leak rate
≤ 1.0Pa/min, melting voltage 30～40V, melting electric current 12～24kA, stabilising arc current DC 3.0～14.0A, cool time 4
～8h.
In step 3, secondary smelting parameter is: crucible specification Φ 440～Φ 640mm, molten initial vacuum degree≤1.8Pa, leak rate
≤ 0.8Pa/min, melting voltage 32～40V, melting electric current 14～28kA, stabilising arc electric current exchange 5.0～16.0A, cool time 4
～8h.
In step 3, three smelting parameters are: crucible specification Φ 560～Φ 720mm, molten initial vacuum degree≤1.5Pa, leak rate
≤ 0.5Pa/min, melting voltage 32～40V, melting electric current 17～28kA, stabilising arc electric current exchange 8.0～18.0A, cool time 4
～8h.
The invention has the beneficial effects as follows, it is block pure that the present invention uses graininess aluminum molybdenum, aluminum vanadium and aluminum niobium intermediate alloy to replace
Molybdenum, pure vanadium and pure niobium, select little granule high-purity metal chromium, the little participated sponge titanium of high-grade 0.83～12.7mm, and strict control is former
Oxygen content in material and other impurity content.Use single-piece electrode batch mixing before electrode compacting, be sufficiently mixed uniformly；Electrode
Whole electrode welding process is completed, it is to avoid tungsten or the pollution of other impurity and electrode in non-tungsten electrode vacuum plasma welding box
Oxidation；Using vacuum consumable electrode arc furnace to carry out three meltings, the parameter such as vacuum, leak rate is strictly controlled by fusion process
System, make the whole horizontal and vertical uniformity of ingot casting composition all be improved, impurity content reduce.Successfully breach industry 1 tonne,
3 tonnes and 5 tonnes big size ingot-casting chemical composition uniformity controlling technology, control aluminium element scaling loss in fusion process,
Avoid high-melting-point molybdenum, vanadium and niobium element and form the metallurgical imperfections such as niggerhead, effectively solve component segregation, impurity and gap
The problems such as the content control of element, lot stability, it is adaptable to Φ 280～Φ 720mm specification WSTi45561 titan alloy casting ingot
Industrialized production.The WSTi45561 titan alloy casting ingot prepared can be used in processing high intensity forged shaft, it is adaptable to manufactures
The key components and partss such as Aero-Space securing member, undercarriage and hanger.
Accompanying drawing explanation
Fig. 1 is to the ingot casting using the inventive method to obtain longitudinally 5 sampling schematic diagrams；
Fig. 2 is to horizontal 9 the sampling schematic diagrams of ingot casting using the inventive method to obtain；
Fig. 3 is ingot casting longitudinally 5 chemical composition content distribution figures that present example 2 obtains；
Fig. 4 is horizontal 9 the Al the content distribution of elements figures of ingot casting that present example 2 obtains；
Fig. 5 is horizontal 9 the Mo the content distribution of elements figures of ingot casting that present example 2 obtains；
Fig. 6 is horizontal 9 the V element content distribution figures of ingot casting that present example 2 obtains；
Fig. 7 is horizontal 9 the Cr the content distribution of elements figures of ingot casting that present example 2 obtains；
Fig. 8 is horizontal 9 the Nb the content distribution of elements figures of ingot casting that present example 2 obtains.
In figure, 1. ingot casting, 2. longitudinal sample point, 3. horizontal sample point.
Detailed description of the invention
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
One WSTi45561 superhigh intensity titanium alloy of the present invention, has following elementary composition: Al according to percentage by weight:
2.0%～6.0%, Mo:3.0%～7.0%, V:3.0%～7.0%, Cr:2.0%～8.0%, Nb:0.0%～4.0%,
Fe≤2.00%, O≤0.30%, surplus is Ti and inevitable impurity, impurity element total amount be less than 0.20%, above group
Dividing percentage by weight sum is 100%.
Above-mentioned WSTi45561 superhigh intensity titanium alloy preparation method, specifically includes following steps:
Step 1, prepares electrode:
According to each element weight percent be: Al:2.0%～6.0%, Mo:3.0%～7.0%, V:3.0%～
7.0%, Cr:2.0%～8.0%, Nb:0.0%～4.0%, Fe≤2.00%, O≤0.30%, surplus is that Ti is with inevitable
Impurity, impurity element total amount be less than 0.20%, above weight percentages of components sum is 100%, calculate alloy proportion also
Weighing the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0% respectively, content of vanadium is the graininess of 70.0%～90.0%
Aluminum-vanadium alloy, content of niobium is the aluminum niobium alloy of 70.0%～80.0%, and granular crome metal and aluminium shot, with granularity is
The little participated sponge titanium of 0.83～12.7mm carries out single-piece electrode batch mixing, and is pressed into electrode block, compacting pressure with large hydraulic press
Power >=20MPa, press time >=4s.
Step 2, welding consutrode:
Use clamp electrode block, use non-tungsten electrode argon shield plasma case that electrode block is welded into a square electricity
Pole, is consutrode, and the electric current of electrode welding is 200～400A, and weldingvoltage is 35～45V；
Solder joint requires as silver gray or faint yellow, the metallurgical imperfection such as prevent that solder joint oxidation and high density are mingled with.
Step 3, uses vacuum consumable electrode arc furnace to carry out obtaining step 2 consutrode and carries out three vacuum melting:
Melting once: step 2 is obtained consutrode and is placed in crucible specification Φ 160～Φ 560mm, molten initial vacuum degree≤
2.0Pa, leak rate≤1.0Pa/min, melting voltage 30～40V, melting electric current 12～24kA, stabilising arc current DC 3.0～
14.0A, cool time 4～8h, melting carries out chamfered at lathe to ingot casting after completing；
Secondary smelting: the ingot casting after melting once chamfering is inverted and melting again, crucible specification Φ 220～Φ
640mm, molten initial vacuum degree≤1.8Pa, leak rate≤0.8Pa/min, melting voltage 32～40V, melting electric current 14～28kA, surely
Arc current exchange 5.0～16.0A, cool time 4～8h, melting carries out chamfered at lathe to ingot casting after completing；
Three meltings: the ingot casting after secondary smelting chamfering is inverted and melting again, crucible specification Φ 280～Φ
720mm, molten initial vacuum degree≤1.5Pa, leak rate≤0.5Pa/min, melting voltage 32～40V, melting electric current 17～28kA, surely
Arc current exchange 8.0～18.0A, cool time 4～8h, i.e. obtains WSTi45561 titan alloy casting ingot.
The present invention uses graininess aluminum molybdenum, aluminum vanadium and aluminum niobium intermediate alloy to replace block pure molybdenum, pure vanadium and pure niobium, selects little
Granule high-purity metal chromium, the little participated sponge titanium of high-grade 0.83～12.7mm, the strict oxygen content controlled in raw material and other
Impurity content, uses single-piece electrode batch mixing before electrode compacting, is sufficiently mixed uniformly；Electrode is at non-tungsten electrode vacuum plasma welding
Case completes whole electrode welding process, it is to avoid tungsten or the pollution of other impurity and anodizing；Employing vacuum consumable electricity
Arc stove carries out three meltings, and the parameter such as vacuum, leak rate is strictly controlled by fusion process, makes whole ingot casting composition horizontal
All be improved with longitudinal uniformity, impurity content reduces.Successfully breach industry 1 ton, 3 tons and 5 tonnes of big size ingot-castings
Study a point uniformity controlling technology, decrease aluminium element scaling loss in fusion process, it is to avoid high-melting-point molybdenum, vanadium and niobium element
Form the metallurgical imperfections such as niggerhead.Effectively solve the content control of component segregation, impurity and interstitial element, lot stability
Etc. problem, it is adaptable to the industrialized production of Φ 280～Φ 720mm specification WSTi45561 titan alloy casting ingot.
Embodiment 1
Step 1, according to each element weight percent be: Al2.0%, Mo3.0%, V3.0%, Cr2.0%, Nb0.1%,
Fe≤0.50%, O≤0.30%, surplus is Ti and inevitable impurity, impurity element total amount be less than 0.20%, above group
Dividing percentage by weight sum is 100%, weighs the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0%, content of vanadium respectively
Being the graininess aluminum-vanadium alloy of 70.0%～90.0%, content of niobium is the aluminum niobium alloy of 70.0%～80.0%, and graininess
Crome metal and aluminium shot, carry out single-piece electrode batch mixing with the little participated sponge titanium that granularity is 0.83～12.7mm.
Step 2, raw material step 1 mixed is poured large hydraulic press die cavity into and is pressed into dense electrodes block, press power
20MPa, dwell time 4s；
Step 3, uses clamp electrode block, uses the electrode block welding that non-tungsten electrode argon shield plasma case will suppress
For consutrode, welding current 200A, weldingvoltage 35V, solder joint requires to be silver gray or faint yellow, prevents solder joint oxidation and height
The metallurgical imperfections such as density inclusions；
Step 4, the consutrode using vacuum consumable electrode arc furnace to obtain step 2 carries out three vacuum melting, particularly as follows:
Melting once: crystallizer specification Φ 160mm, molten initial vacuum degree≤2.0Pa, melting voltage 30V～35V, melting electricity
Stream 12kA～18kA, leak rate controls at below 1.0Pa/min, and stabilising arc electric current uses direct current 3A～10A, cool time after melting
4.0 hours, melting carried out chamfered at lathe to ingot casting after completing；
Secondary smelting: the ingot casting after melting once chamfering is inverted and melting again, crystallizer specification Φ 220mm, molten
Initial vacuum degree≤1.8Pa, melting voltage 32V～37V, melting electric current 14kA～20kA；Leak rate control 0.8Pa/min with
Under, stabilising arc electric current uses exchange 5A～12A, and cool time 4.0 hours after melting, ingot casting is carried out after completing by melting at lathe
Chamfered；
Three meltings: the ingot casting after secondary smelting chamfering is inverted and melting again；Crystallizer specification Φ 280mm, molten
Initial vacuum degree≤1.5Pa, melting voltage 32V～36V, melting electric current 18kA～24kA；Leak rate control 0.5Pa/min with
Under, stabilising arc electric current uses exchange 7A～14A, cool time 4.0 hours after melting, obtains the WSTi45561 titanium alloy of Φ 280mm
Ingot casting.
Embodiment 2
Step 1, according to each element weight percent be: Al4.2%, Mo5.0%, V5.0%, Cr6.0%, Nb1.0%,
Fe≤1.00%, O≤0.30%, surplus is Ti and inevitable impurity, impurity element total amount be less than 0.20%, above group
Dividing percentage by weight sum is 100%, weighs the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0%, content of vanadium respectively
Being the graininess aluminum-vanadium alloy of 70.0%～90.0%, content of niobium is the aluminum niobium alloy of 70.0%～80.0%, and graininess
Crome metal and aluminium shot, carry out single-piece electrode batch mixing with the little participated sponge titanium that granularity is 0.83～12.7mm.
Step 2, raw material step 1 mixed is poured large hydraulic press die cavity into and is pressed into dense electrodes block, suppresses pressure
22MPa, dwell time 6s；
Step 3, uses clamp electrode block, uses the electrode block welding that non-tungsten electrode argon shield plasma case will suppress
For consutrode, welding current 300A, weldingvoltage 40V, solder joint requires to be silver gray or faint yellow, prevents solder joint oxidation and height
The metallurgical imperfections such as density inclusions；
Step 4, the consutrode using vacuum consumable electrode arc furnace to obtain step 2 carries out three vacuum melting, particularly as follows:
Melting once: crystallizer specification Φ 440mm, molten initial vacuum degree≤2.0Pa, melting voltage 32～37V, melting electric current
14～20kA；Leak rate controls at below 1.0Pa/min, and stabilising arc electric current uses direct current 5～12A, and after melting, cool time 6.0 is little
Time, melting carries out chamfered at lathe to ingot casting after completing；
Secondary smelting: the ingot casting after melting once chamfering is inverted and melting again, crystallizer specification Φ 560mm, molten
Initial vacuum degree≤1.8Pa, melting voltage 33～38V, melting electric current 16～22kA；Leak rate controls at below 0.8Pa/min, surely
Arc current uses exchange 7～14A, and cool time 6.0 hours after melting, ingot casting is carried out at chamfering after completing by melting at lathe
Reason；
Three meltings: the ingot casting after secondary smelting chamfering is inverted and melting again, crystallizer specification Φ 640mm, molten
Initial vacuum degree≤1.2Pa, melting voltage 33～37V, melting electric current 20～22kA；Leak rate controls at below 0.5Pa/min, surely
Arc current uses exchange 10～16A, cool time 6.0 hours after melting, obtains the WSTi45561 titan alloy casting ingot of Φ 640mm.
Embodiment 3
Step 1, according to each element weight percent be: Al6.0%, Mo7.0%, V7.0%, Cr8.0%, Nb4.0%,
Fe≤2.00%, O≤0.30%, surplus is Ti and inevitable impurity, impurity element total amount be less than 0.20%, above group
Dividing percentage by weight sum is 100%, weighs the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0%, content of vanadium respectively
Being the graininess aluminum-vanadium alloy of 70.0%～90.0%, content of niobium is the aluminum niobium alloy of 70.0%～80.0%, and graininess
Crome metal and aluminium shot, carry out single-piece electrode batch mixing with the little participated sponge titanium that granularity is 0.83～12.7mm.
Step 2: raw material step 1 mixed is poured large hydraulic press die cavity into and is pressed into dense electrodes block, suppresses pressure
28MPa, dwell time 8s；
Step 3: use clamp electrode block, uses the electrode block welding that non-tungsten electrode argon shield plasma case will suppress
For consutrode, welding current 400A, weldingvoltage 45V, solder joint requires to be silver gray or faint yellow, prevents solder joint oxidation and height
The metallurgical imperfections such as density inclusions；
Step 4: the consutrode using vacuum consumable electrode arc furnace to obtain step 2 carries out three vacuum melting, particularly as follows:
Melting once: crystallizer specification Φ 560mm, molten initial vacuum degree≤2.0Pa, melting voltage 33～38V, melting electric current
18～24kA；Leak rate controls at below 1.0Pa/min, and stabilising arc electric current uses direct current 7～14A, and after melting, cool time 8.0 is little
Time, melting carries out chamfered at lathe to ingot casting after completing；
Secondary smelting: the ingot casting after melting once chamfering is inverted and melting again, crystallizer specification Φ 640mm, molten
Initial vacuum degree≤1.6Pa, melting voltage 33～40V, melting electric current 22～28kA；Leak rate controls at below 0.5Pa/min, surely
Arc current uses exchange 10～16A, and cool time 8.0 hours after melting, melting carries out chamfering at lathe to ingot casting after completing
Process；
Three meltings: the ingot casting after secondary smelting chamfering is inverted and melting again；Crystallizer specification Φ 720mm, molten
Initial vacuum degree≤0.8Pa, melting voltage 35～40V, melting electric current 22kA～28kA；Leak rate controls at below 0.5Pa/min,
Stabilising arc electric current uses exchange 12～18A, cool time 8.0 hours after melting, obtains the WSTi45561 titanium alloy casting of Φ 720mm
Ingot.
Shown in Fig. 1 and 2, the specification prepared in embodiment is respectively Φ 280mm, Φ 640mm and Φ 720mm
Longitudinal head of 1 ton, 3 tons and 5 tonnes industrial large-sized ingot casting of WSTi45561 alloy, upper, middle and lower, 5, tail and cross section 9 are carried out
Sampling and chemical composition detection, the data display each position of ingot casting each elemental composition be evenly distributed and stability between batch relatively
Good；And to ingot casting head, in, the section of afterbody position carry out X-ray transmission, result show and does not finds that any component segregation and metallurgy are scarce
Fall into；The Φ 640mm specification WSTi45561 titan alloy casting ingot that wherein example 2 obtains longitudinally 5 and horizontal 9 chemical composition analysis
Result the most as shown in Figures 3 and 4 (vertical coordinate is element weight percent), wherein longitudinally list in Table 1 by 5 chemical compositions,
Fig. 4-8 represents the content distribution of the different sample points of each element respectively.
Longitudinally 5 the chemical composition lists of table 1 Φ 640mm specification WSTi45561 titan alloy casting ingot
| Chemical element wt% | Al | Mo | V | Cr | Nb |
| Head | 4.22 | 4.95 | 4.91 | 5.92 | 1.02 |
| On | 4.25 | 4.97 | 5.05 | 6.05 | 1.02 |
| In | 4.30 | 4.98 | 4.96 | 5.97 | 1.02 |
| Under | 4.18 | 4.97 | 4.93 | 5.95 | 1.02 |
| Tail | 4.22 | 4.97 | 5.01 | 5.98 | 1.02 |
From test result, the WSTi45561 titanium alloy technical grade using the smelting technology technology of the present invention to produce is big
Type ingot casting composition is uniform, and lot stability is good, it is adaptable to industrialized production.
Claims (10)
1. a WSTi45561 superhigh intensity titanium alloy, it is characterised in that have following elementary composition according to percentage by weight: Al:
2.0%～6.0%, Mo:3.0%～7.0%, V:3.0%～7.0%, Cr:2.0%～8.0%, Nb:0.0%～4.0%,
Fe≤2.00%, O≤0.30%, surplus is Ti and inevitable impurity, impurity element total amount be less than 0.20%, above group
Dividing percentage by weight sum is 100%.
A kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 1, it is characterised in that described Mo, V, Nb unit
Element is respectively derived from the graininess aluminium molybdenum alloys that molybdenum content is 55.0%～75.0%, content of vanadium be 70.0%～90.0%
Particulate aluminum vanadium alloy, content of niobium is the graininess aluminum niobium alloy of 70.0%～80.0%.
A kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 1, it is characterised in that described Al unit is usually
Come from aluminium shot and graininess aluminium molybdenum alloys, aluminum-vanadium alloy and aluminum niobium alloy；Cr element derives from granular metal chromium.
4. the preparation method of a WSTi45561 superhigh intensity titanium alloy, it is characterised in that specifically include following steps:
Step 1, prepares electrode:
By granular aluminium molybdenum alloys, aluminum-vanadium alloy, aluminum niobium alloy, and crome metal, aluminium shot and little participated sponge titanium carry out list
Cube electrode batch mixing, and it is pressed into electrode block；
Step 2, welding consutrode:
The electrode block obtained by clamp step 1, uses non-tungsten electrode argon shield plasma case that electrode block is welded as consumable
Electrode；
Step 3, uses vacuum consumable electrode arc furnace to carry out that step 2 obtains consutrode and carries out three vacuum melting, i.e. obtain
WSTi45561 titan alloy casting ingot.
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
The molybdenum content of graininess aluminium molybdenum alloys described in rapid 1 is 55.0%～75.0%, and the content of vanadium of graininess aluminum-vanadium alloy is
70.0%～90.0%, the content of niobium of graininess aluminum niobium alloy is 70.0%～80.0%.
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
Electrode described in rapid 2 is square electrode.
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
The electric current of electrode welding described in rapid 2 is 200～400A, and weldingvoltage is 35～45V.
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
Described in rapid 3, melting once parameter is: crucible specification Φ 160～Φ 560mm, molten initial vacuum degree≤2.0Pa, leak rate≤
1.0Pa/min, melting voltage 30～40V, melting electric current 12～24kA, stabilising arc current DC 3.0～14.0A, cool time 4～
8h。
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
Described in rapid 3, secondary smelting parameter is: crucible specification Φ 220～Φ 640mm, molten initial vacuum degree≤1.8Pa, leak rate≤
0.8Pa/min, melting voltage 32～40V, melting electric current 14～28kA, stabilising arc electric current exchange 5.0～16.0A, cool time 4～
8h。
The preparation method of a kind of WSTi45561 superhigh intensity titanium alloy the most according to claim 4, it is characterised in that step
Described in rapid 3, three smelting parameters are: crucible specification Φ 280～Φ 720mm, molten initial vacuum degree≤1.5Pa, leak rate≤
0.5Pa/min, melting voltage 32～40V, melting electric current 17～28kA, stabilising arc electric current exchange 8.0～18.0A, cool time 4～
8h。
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| CN106636744A (en) * | 2016-12-14 | 2017-05-10 | 西部超导材料科技股份有限公司 | WSTi64E high-damage-tolerance super-large-size titanium alloy cast ingot and preparation method thereof |
| CN107177753A (en) * | 2017-06-29 | 2017-09-19 | 西部超导材料科技股份有限公司 | A kind of method for controlling big specification TC4 DT titan alloy casting ingot solidified structures |
| CN107217164A (en) * | 2017-05-26 | 2017-09-29 | 西安赛特思迈钛业有限公司 | A kind of preparation method of titanium alloy large-sized homogeneous ingot casting |
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| CN106636744A (en) * | 2016-12-14 | 2017-05-10 | 西部超导材料科技股份有限公司 | WSTi64E high-damage-tolerance super-large-size titanium alloy cast ingot and preparation method thereof |
| CN107217164A (en) * | 2017-05-26 | 2017-09-29 | 西安赛特思迈钛业有限公司 | A kind of preparation method of titanium alloy large-sized homogeneous ingot casting |
| CN107217164B (en) * | 2017-05-26 | 2018-09-25 | 西安赛特思迈钛业有限公司 | A kind of preparation method of titanium alloy large-sized homogeneous ingot casting |
| CN107177753A (en) * | 2017-06-29 | 2017-09-19 | 西部超导材料科技股份有限公司 | A kind of method for controlling big specification TC4 DT titan alloy casting ingot solidified structures |
| CN107523718A (en) * | 2017-07-13 | 2017-12-29 | 西部超导材料科技股份有限公司 | A kind of aerospace component 1500MPa level titanium alloys and preparation method thereof |
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| CN108342616A (en) * | 2018-03-28 | 2018-07-31 | 西部超导材料科技股份有限公司 | A kind of activeness and quietness metastable β Titanium-alloy and preparation method thereof |
| CN111057887A (en) * | 2019-11-18 | 2020-04-24 | 西部超导材料科技股份有限公司 | Preparation method of high-uniformity TA18 titanium alloy ingot for aviation hydraulic pipe |
| CN111455203A (en) * | 2020-05-28 | 2020-07-28 | 陕西工业职业技术学院 | Preparation method of TiAl bar for 3D printing powder making |
| CN114381632A (en) * | 2020-10-20 | 2022-04-22 | 重庆理工大学 | Novel titanium alloy and preparation method thereof |
| CN112410613A (en) * | 2020-10-30 | 2021-02-26 | 中国航发北京航空材料研究院 | Titanium alloy smelting method |
| CN113278849A (en) * | 2021-05-20 | 2021-08-20 | 西部超导材料科技股份有限公司 | Reinforced and toughened metastable beta titanium alloy and preparation method thereof |
| CN113278849B (en) * | 2021-05-20 | 2022-12-06 | 西部超导材料科技股份有限公司 | Reinforced and toughened metastable beta titanium alloy and preparation method thereof |
| CN115852284A (en) * | 2022-11-11 | 2023-03-28 | 西部超导材料科技股份有限公司 | Heat treatment process for TB18 ultrahigh-strength and high-toughness titanium alloy |
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| CN115838876A (en) * | 2022-12-06 | 2023-03-24 | 西北有色金属研究院 | Preparation method of niobium-titanium-aluminum-based alloy ingot |
| CN115838876B (en) * | 2022-12-06 | 2024-01-19 | 西北有色金属研究院 | Preparation method of niobium-titanium-aluminum-based alloy cast ingot |
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