CN107604282B - A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy - Google Patents
A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy Download PDFInfo
- Publication number
- CN107604282B CN107604282B CN201710878072.XA CN201710878072A CN107604282B CN 107604282 B CN107604282 B CN 107604282B CN 201710878072 A CN201710878072 A CN 201710878072A CN 107604282 B CN107604282 B CN 107604282B
- Authority
- CN
- China
- Prior art keywords
- blank
- alloy
- temperature
- thermo
- carried out
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention provides a kind of thermo-mechanical treatment process method for preparing fine grain TA15 alloy, the thermo-mechanical treatment process method of the preparation fine grain TA15 alloy includes: step A: TA15 alloy blank being heated in the monophase field β, keeps the temperature t1 minutes；Step B: and then by blank direct-water-quenching or flat-die forging, the deflection of flat-die forging is a1；Step C: then, then blank being heated in alpha+beta two-phase section, keeps the temperature t2 minutes；Step D: then, flat-die forging is carried out to blank, the deflection of flat-die forging is a2；Step E: and then water cooling is carried out to blank or is air-cooled to room temperature；Step F: and then recrystallization annealing processing is carried out to blank.The present invention refines TA15 alloy grain using thermo-mechanical treatment process, which does not have excessively high requirement to equipment, is not necessarily to particular manufacturing craft, can not only refine titanium alloy crystal grain, but also can prepare large-scale titanium alloy blank to meet the production needs of practical forging.
Description
Technical field
The present invention relates to metal heat treatmet fields, and in particular to a kind of crystal fining method of titanium alloy, i.e., it is a kind of to prepare
The thermo-mechanical treatment process method of fine grain TA15 alloy.
Background technique
For equipment configuration weight is effectively reduced, equipment performance, service life and reliability, many key portions on aircraft are improved
Part uses titanium alloy large-sized integral structure component more and more, and titanium alloy large-sized entirety key structure part dosage, which becomes, measures the modern times
The one of the important signs that of the Grand Equipments technical advance such as aircraft and aero-engine.Titanium alloy microstructure joins forging technology
Number is more sensitive, and conventional wrought processes are difficult to meet the forming of large complicated titanium alloy member, and superplasticforming technique can overcome
Some disadvantages of conventional wrought processes provide a new approach for the forming of large titanium alloy integral structure component.According to warp
Allusion quotation is theoretical, that titanium alloy has a superplastic necessary condition first is that have the microstructure of equi-axed crystal, and requires crystallite dimension d
10 μm of <.Crystal grain is thinner, and crystal boundary is more, more tortuous, is conducive to prevent the propagation of crackle, to can hold before titanium alloy fracture
By biggish plastic deformation, more function is absorbed, titanium alloy shows preferable plasticity and toughness.TA15(Ti–6.5Al–2Zr–
1Mo -1V) alloy be a kind of high equivalent thickness of aluminium nearly alpha titanium alloy, microstructure is mainly by a large amount of α phase composition.Numerous studies
Show that the suitable titanium alloy of α and β two-phase proportion is more advantageous to superplastic deformation, and the microstructure of TA15 alloy is mainly by α phase
It constitutes, superplastic ability is relatively poor.In addition, supply of material state TA15 alloy is anisometric coarse grain, microstructure is distributed not
Uniformly, therefore in order to improve its superplastic ability, need to carry out its microstructure micronization processes to obtain isometric fine grained texture.
Currently, the process of refinement titanium alloy crystal grain is more, there is Equal-channel Angular Pressing method ((Equal Channel
Angular Pressing, ECAP), hot stressing method and mechanical alloying method, Equal-channel Angular Pressing method is turned in equal channels
Multi-pass extrusion deformation is carried out to titanium alloy blank in the extrusion die of angle, thus realize the refinement of titanium alloy crystal grain, however due to
The resistance of deformation of titanium alloy is larger, and it is very high to squeeze temperature, and multi-pass extruding is needed to can be only achieved thinning effect, and technical process is multiple
Miscellaneous, the process is not controlled properly causes grain coarsening instead, and the specimen size obtained is smaller, it is difficult to meet wanting for actual production
It asks.In addition, this method is relatively high to equipment requirement, high temperature alloy mold and isothermal forging equipment are needed, production cost is increased.Heat
Hydrogen treatment process is penetrated into titanium alloy using hydrogen as temporary alloying element, is refined its crystal grain, is improved its structure property and heat
Processing performance.However, hydrogen is larger to the harmfulness of titanium alloy, therefore hot stressing technique is extremely stringent to the concentration control of hydrogen,
Control it is improper be easy titanium alloy microstructure is adversely affected.In addition, relative to plastic deformation, the thinning effect of the technique
It is limited.Mechanical alloying method by mechanical energy drive two or more metal powder realize atom diffusion, solid phase reaction with
And phase transformation, to obtain Fine Grain Ti Alloy.The technical process is very complicated, oxidation and pollution problem it is very serious, practical application have compared with
Big limitation.
In conclusion following problems exist in the prior art: the existing technology for preparing Fine Grain Ti Alloy, i.e. refinement supply of material state
TA15 alloy grain, cost of manufacture is high, manufactured crystal grain is big.
Summary of the invention
The present invention provides a kind of thermo-mechanical treatment process method for preparing fine grain TA15 alloy, i.e., refinement supply of material state TA15 is closed
The method of Jin Jing's grain, to solve the existing technology for preparing Fine Grain Ti Alloy, the problem that cost of manufacture is high, manufactured crystal grain is big.
For this purpose, the present invention proposes a kind of thermo-mechanical treatment process method for preparing fine grain TA15 alloy, the preparation fine grain
The thermo-mechanical treatment process method of TA15 alloy includes:
Step A: TA15 alloy blank is heated in the monophase field β, keeps the temperature t1 minutes；
Step B: and then by blank direct-water-quenching or flat-die forging, the deflection of flat-die forging is a1；
Step C: then, then blank being heated in alpha+beta two-phase section, keeps the temperature t2 minutes；
Step D: then, flat-die forging is carried out to blank, the deflection of flat-die forging is a2；
Step E: and then water cooling is carried out to blank or is air-cooled to room temperature；
Step F: and then recrystallization annealing processing is carried out to blank.
Further, in the step A, the temperature that TA15 alloy blank is heated in the monophase field β is Tβ+40℃
(specially 1020 DEG C), TβFor TA15 alloy phase change point.
Further, in the step C, the temperature that TA15 alloy blank is heated in the monophase field β is Tβ-40℃
(specially 940 DEG C).
Further, in step B, deflection a1 is 50%~60%.
Further, in step D, deflection a2 is 50%~60%.
Further, annealing temperature is 810 DEG C, and annealing soaking time is 60min, is then air-cooled to room temperature.
Further, the thermo-mechanical treatment process method of the preparation fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated to Tβ+ 40 DEG C, keep the temperature 50min；
Step B1: and then water cooling immediately after taking out blank out of furnace；
Step C1: then, then blank is put into heating furnace and is heated to Tβ- 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 12.17；
Step E1: and then water cooling is carried out to blank；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is
Then 60min is air-cooled to room temperature.
Further, in step D1, final forging temperature is greater than 850 DEG C.
Further, the thermo-mechanical treatment process method of the preparation fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated to Tβ+ 40 DEG C, keep the temperature 50min；
Step B1: and then water cooling immediately after taking out blank out of furnace；
Step C1: then, then blank is put into heating furnace and is heated to Tβ- 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 22.37；
Step E1: and then water cooling is carried out to blank；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is
60min is air-cooled to room temperature.
Further, the thermo-mechanical treatment process method of the preparation fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated to Tβ+ 40 DEG C, keep the temperature 50min；
Step B1: and then forging deformation is carried out after taking out blank out of furnace, room temperature is air-cooled to after deformation；
Step C1: then, then blank is put into heating furnace and is heated to Tβ- 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 22.37；
Step E1: and then blank is carried out air-cooled；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is
60min is air-cooled to room temperature.
The present invention state TA15 alloy blank that will supply is heated in the monophase field β, then on direct-water-quenching or flat-die hammer
Forging deformation is to design size；Then, then by blank in alpha+beta two-phase section heat, continue to carry out freely blank after heat preservation
Forging deformation is to design size, water cooling or air-cooled after forging；Recrystallization annealing processing finally is carried out to deformation blank.Wherein, every time
The deformation amount controlling of open die forging is 50%~60% or so.
The present invention refines TA15 alloy grain using thermo-mechanical treatment process, which does not have excessively high requirement to equipment,
Without particular manufacturing craft, titanium alloy crystal grain can be not only refined, but also large-scale titanium alloy blank can be prepared to meet practical forging
The production of part needs.
The present invention deforms blank using open die forging, and in deformation process, the crystal grain of blank will not arbitrarily grow up, than etc.
The effect of warm forging is more preferable, and process is flexible, processing environment requirement is simple, processing cost is low.
Detailed description of the invention
Fig. 1 is the metallurgical structure picture of TA15 alloy (supply of material state TA15 alloy grain) original structure；
Fig. 2 is that blank is put into heating furnace and is heated to T in the embodiment of the present invention oneβ+ 40 DEG C, 50min is kept the temperature, from furnace
Water cooling immediately after interior taking-up, the TA15 alloy microstructure structure picture of acquisition；
Fig. 3 is in the embodiment of the present invention one blank to be put into heating furnace be heated to T againβ- 40 DEG C, 50min is kept the temperature,
Forging deformation is carried out to blank, water cooling immediately after forging, the TA15 alloy microstructure structure picture of acquisition；
Fig. 4 is to handle in the embodiment of the present invention one blank recrystallization annealing: it is 810 DEG C × 60min, air-cooled, acquisition
TA15 alloy microstructure structure picture；
Fig. 5 is that blank is put into heating furnace and is heated to T in the embodiment of the present invention twoβ+ 40 DEG C, 50min is kept the temperature, to base
Material carries out forging deformation, water cooling immediately after deformation, the TA15 alloy microstructure structure picture of acquisition；
Fig. 6 is in the embodiment of the present invention two blank to be put into heating furnace be heated to T againβ- 40 DEG C, 50min is kept the temperature,
Forging deformation is carried out to blank, water cooling immediately after forging, the TA15 alloy microstructure structure picture of acquisition；
Fig. 7 is to handle in the embodiment of the present invention two blank recrystallization annealing: it is 810 DEG C × 60min, air-cooled, acquisition
TA15 alloy microstructure structure picture；
Fig. 8 is that blank is put into heating furnace and is heated to T in the embodiment of the present invention threeβ+ 40 DEG C, 50min is kept the temperature, to base
Material carries out forging deformation, air-cooled after deformation, the TA15 alloy microstructure structure picture of acquisition；
Fig. 9 is that blank is put into heating furnace and is heated to T in the embodiment of the present invention threeβ- 40 DEG C, 50min is kept the temperature, to base
Material carries out forging deformation, air-cooled after forging, the TA15 alloy microstructure structure picture of acquisition；
Figure 10 is to handle in the embodiment of the present invention three blank recrystallization annealing: it is 810 DEG C × 60min, air-cooled, acquisition
TA15 alloy microstructure structure picture.
Fig. 1 to Figure 10, the amplification factor of each figure are 400 times.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
It is bright.
Embodiment one:
(1) TA15 alloy blank, which is put into heating furnace, is heated to Tβ+ 40 DEG C, 50min is kept the temperature, water immediately after taking out out of furnace
It is cold；β phase water cooling can produce coarse acicular martensite.
(2) blank is put into heating furnace again and is heated to Tβ- 40 DEG C, 50min is kept the temperature, forging deformation is carried out to blank,
Water cooling immediately after forging.The final forging temperature of this step has to be larger than 850 DEG C, otherwise carries out melting down heating to blank.
(3) blank recrystallization annealing is handled: 810 DEG C × 60min, air-cooled (to room temperature).
Total forging ratio of the open die forging of blank is the metallographic group that 12.17, Fig. 1 is TA15 alloy original structure in embodiment one
Structure picture is knitted, the microstructure for the TA15 alloy that each step obtains is as shown in Figure 2, Figure 3, Figure 4.
Embodiment two:
(1) blank, which is put into heating furnace, is heated to Tβ+ 40 DEG C, 50min is kept the temperature, forging deformation is carried out to blank, after deformation
Water cooling immediately；β grain deformation is crushed, and water cooling can produce more tiny martensite.
(2) blank, which is put into heating furnace, is heated to Tβ- 40 DEG C, 50min is kept the temperature, forging deformation is carried out to blank, forging becomes
Water cooling immediately after shape.The final forging temperature of this step has to be larger than 850 DEG C, otherwise carries out melting down heating to blank.
(3) blank recrystallization annealing is handled: 810 DEG C × 60min, air-cooled.
Total forging ratio is 22.37 in embodiment two, and the microstructure in each step is respectively as shown in Fig. 5, Fig. 6 and Fig. 7.
Embodiment three:
(1) blank, which is put into heating furnace, is heated to Tβ+ 40 DEG C, 50min is kept the temperature, forging deformation is carried out to blank, after deformation
It is air-cooled；
(2) blank, which is put into heating furnace, is heated to Tβ- 40 DEG C, after keeping the temperature 50min, forging deformation, deformation are carried out to blank
It is air-cooled afterwards.
(3) blank recrystallization annealing is handled: 810 DEG C × 60min, air-cooled.
Total forging ratio is 22.37 in embodiment three, and the microstructure in each step is as shown in Fig. 8, Fig. 9 and Figure 10.
Table 1 is the influence table of comparisons of the different thermo-mechanical treatment process to TA15 Alloy At Room Temperature mechanical property
In order to compare influence of the deflection to structure property, one monophase field high temperature β of embodiment is only heated, unchanged
Shape, and only deformed in two-phase section, so one deflection of embodiment needs strict control.
Preferred embodiments of the present invention, such as embodiment two carry out upsetting repeatedly to TA15 alloy blank using flat-die hammer
Thick and pulling, deformation temperature are selected in T firstβ+ 40 DEG C of high-temperature region (TβFor TA15 alloy phase change point), deformation amount controlling is 50%
~60% or so, quick water quenching after deformation, then (T under the conditions of relatively low deformation temperature againβ- 40 DEG C) blank is carried out
Forging deformation, deflection still control the water quenching immediately after 50%~60% or so, deformation, finally carry out recrystallization to blank and move back
Fire is handled so that tissue is more uniform.
The thermo-mechanical treatment process combined by above-mentioned high/low temperature, so that the crystallite dimension of supply of material state TA15 alloy obtains
Sufficient refinement, wherein average grain size reaches 2 μm in embodiment two, and the mechanical property of TA15 alloy obtains after refining
To increasing substantially, as shown in table 1.
The present invention selects forging deformation temperature on the basis of TA15 alloy phase change point, the heat combined using high temperature and low-temperature phase
Mechanical treatment technique sufficiently combines the deformation of alloy and phase transformation, is conducive to the refinement of crystal grain.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (7)
1. a kind of thermo-mechanical treatment process method for preparing fine grain TA15 alloy, which is characterized in that the preparation fine grain TA15 is closed
Gold thermo-mechanical treatment process method include:
Step A: TA15 alloy blank is heated in the monophase field β, keeps the temperature t1 minutes；In the step A, by TA15 alloy preform
Expect that the temperature heated in the monophase field β is 1020 DEG C, i.e., more than TA15 alloy phase change point 40 degree；
Step B: and then by water quenching after blank flat-die forging, the deflection of flat-die forging is a1；
Step C: then, then blank being heated in alpha+beta two-phase section, keeps the temperature t2 minutes；In the step C, by TA15 alloy
Blank is 940 DEG C, i.e., 40 degree below TA15 alloy phase change point in the temperature that alpha+beta two-phase section is heated；
Step D: then, flat-die forging is carried out to blank, the deflection of flat-die forging is a2；
Step E: and then water cooling is carried out to blank or is air-cooled to room temperature；
Step F: and then recrystallization annealing processing is carried out to blank；Annealing temperature is 810 DEG C, and annealing soaking time is 60min, so
After be air-cooled to room temperature；
After the thermo-mechanical processi of TA15 alloy, TA15 Alloy At Room Temperature mechanical property: tensile strength 1055MPa, yield strength are
1024MPa, elongation percentage 18.73%, the contraction percentage of area 46.13%.
2. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as described in claim 1, which is characterized in that step B
In, deflection a1 is 50% ~ 60%.
3. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as described in claim 1, which is characterized in that step D
In, deflection a2 is 50% ~ 60%.
4. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as described in claim 1, which is characterized in that described
Prepare the thermo-mechanical treatment process method of fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated toT β + 40 DEG C, keep the temperature 50min；
Step B1: and then water cooling immediately after taking out blank out of furnace；
Step C1: then, then blank is put into heating furnace and is heated toT β - 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 12.17；
Step E1: and then water cooling is carried out to blank；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is 60min,
Then it is air-cooled to room temperature.
5. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as claimed in claim 4, which is characterized in that step
In D1, final forging temperature is greater than 850 DEG C.
6. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as described in claim 1, which is characterized in that described
Prepare the thermo-mechanical treatment process method of fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated toT β + 40 DEG C, keep the temperature 50min；
Step B1: and then water cooling immediately after taking out blank out of furnace；
Step C1: then, then blank is put into heating furnace and is heated toT β - 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 22.37；
Step E1: and then water cooling is carried out to blank；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is 60min,
It is air-cooled to room temperature.
7. the thermo-mechanical treatment process method of preparation fine grain TA15 alloy as described in claim 1, which is characterized in that described
Prepare the thermo-mechanical treatment process method of fine grain TA15 alloy specifically:
Step A1: TA15 alloy blank is put into heating furnace and is heated toT β + 40 DEG C, keep the temperature 50min；
Step B1: and then forging deformation is carried out after taking out blank out of furnace, room temperature is air-cooled to after deformation；
Step C1: then, then blank is put into heating furnace and is heated toT β - 40 DEG C, keep the temperature 50min；
Step D1: then, flat-die forging is carried out to blank, the total forging ratio of flat-die forging is 22.37；
Step E1: and then blank is carried out air-cooled；
Step F1: and then recrystallization annealing processing is carried out to blank: annealing temperature is 810 DEG C, and annealing soaking time is 60min,
It is air-cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710878072.XA CN107604282B (en) | 2017-09-26 | 2017-09-26 | A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710878072.XA CN107604282B (en) | 2017-09-26 | 2017-09-26 | A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107604282A CN107604282A (en) | 2018-01-19 |
| CN107604282B true CN107604282B (en) | 2019-11-08 |
Family
ID=61058633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710878072.XA Expired - Fee Related CN107604282B (en) | 2017-09-26 | 2017-09-26 | A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107604282B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159472C (en) * | 2001-09-04 | 2004-07-28 | 北京航空材料研究院 | Titanium alloy quasi-beta forging process |
| CN101403082B (en) * | 2008-09-11 | 2010-09-15 | 西北有色金属研究院 | Thermal treatment method for titanium alloy |
| CN102212765B (en) * | 2011-04-14 | 2012-11-28 | 西北工业大学 | Method for obtaining tri-state structure during titanium alloy local loading formation |
| CN103938139B (en) * | 2014-04-26 | 2015-12-30 | 南昌航空大学 | A kind of heat-treatment technology method obtaining tri-state tissue through two-phase region high temperature deformation TC4-DT titanium alloy |
-
2017
- 2017-09-26 CN CN201710878072.XA patent/CN107604282B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107604282A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103014574B (en) | Preparation method of TC18 ultra-fine grain titanium alloy | |
| CN101480689B (en) | Near-isothermal forging method of two-phase titanium alloy disk-type forgeable piece | |
| CN105088118B (en) | A kind of ultra-fine crystallization method of nickel-based high-temperature alloy sheet material | |
| CN101829749B (en) | Approximate isothermal forging method of BT25 two-phase titanium alloy disk forge piece | |
| CN110273118B (en) | Heat treatment process of titanium alloy | |
| CN101804441B (en) | Near-isothermal forging method of TC17 biphase titanium alloy disc forge piece | |
| CN105506525B (en) | Preparation method of Ti2AlNb-based alloy large-size uniform fine-grain bar | |
| CN110396633B (en) | Preparation method of entropy alloy in ultrafine-grained bimodal structure | |
| CN101967581B (en) | Titanium alloy with thin sheet layer microstructure and manufacturing method thereof | |
| CN111438317B (en) | Preparation method for forging and forming high-strength high-toughness near-beta type titanium alloy forging | |
| CN108034909B (en) | A kind of preparation method of 2050 aluminium lithium alloy fine grain plate | |
| CN102206739A (en) | Dual-refinement treatment process of hot mould steel structure | |
| CN105063291A (en) | Thermal processing method improving impact resistance of 13Cr9Mo2Co1NiVNbNB forged piece | |
| CN110088313A (en) | Alpha and beta titanium alloy squeezes out profile | |
| CN106756688A (en) | One kind deformation TiAl alloy structure property accuracy control method | |
| CN105695910A (en) | Superplastic forming method of TiAl-based alloy sheet | |
| CN112481568B (en) | Ti6Al4V alloy forging beta annealing heat treatment method | |
| Liu et al. | Evolution of the α phase and microhardness for hot isostatic pressed Ti-6Al-4V alloy during multi-pass deformation | |
| CN110144533A (en) | A method of regulation coarse second phase of 2219 aluminium alloy rings | |
| CN106929785A (en) | A kind of diphasic titanium alloy microstructure thinning method | |
| CN107604282B (en) | A kind of thermo-mechanical treatment process method preparing fine grain TA15 alloy | |
| CN112662974A (en) | Heat treatment method of TC21 alloy forging | |
| CN103602936B (en) | Titanium alloy beta converter ageing heat treatment process | |
| CN102758159A (en) | Method for acquiring titanium alloy tristate structure by forging and heat treatment | |
| CN106893813A (en) | Degenerated based on deformation twin and realize the superplastic method of TWIP steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191108 Termination date: 20210926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |