CN108034911B - The preparation method of the high uniformly TC11 alloy bar material of blade - Google Patents
The preparation method of the high uniformly TC11 alloy bar material of blade Download PDFInfo
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- 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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Abstract
The blade preparation method of high uniformly TC11 alloy bar material, takes the TC11 titanium alloy fine forging stock by cogging forging and two-phase section forging, heats below transformation temperature, uses the fiery multi-pass finish forge of precise forging machine one for intermediate finish forge base；After intermediate finish forge base is heated empty burn below transformation temperature, the improvement of the structural homogenity of intermediate finish forge base is realized；The intermediate finish forge base of even tissue is heated below transformation temperature again, the fiery multi-pass finish forge of precise forging machine one is used to be prepared into rolling blank for finished product bar or by the cutting head of finish forge blank, blanking；After finish forge finished product bar is heated empty burn below transformation temperature again, it realizes the preparation of TC11 finish forge bar of high uniform blade or heats rolling blank below transformation temperature, high uniform blade TC11 rolled bar material is obtained using the fiery multi- pass rolling of cross-arranging type hot-rolling mill one.The blade finally obtained TC11 alloy finish forge and rolled bar material transverse direction high power side, core structure uniformity, performance stabilization meets respective material standard requirements, and batch consistency is good, realizes high-quality requirement of the engine to blade TC11 alloy bar material.
Description
Technical field
The invention belongs to titanic alloy machining technical fields, and in particular to a kind of system of the high uniformly TC11 alloy bar material of blade
Preparation Method.
Background technique
TC11 alloy nominal composition: Ti-6.5Al-3.5Mo-1.5Zr-0.3Si is a kind of good alpha+beta type of comprehensive performance
Thermal strength titanium alloy has good heat processing technique at 500 DEG C.Be mainly used for make aero-engine compressor disc,
The parts such as blade, drum barrel.Blade is by finish forge and rolling mode in alpha+beta area heat with the common processing method of TC11 alloy bar material
Deformation and alpha+beta area, which are heat-treated, meets blade with 500 DEG C of high temperature long-term work demands to obtain.
The deformation of finish forge is the layer-by-layer deformation inward-facing by appearance, and acutely, center portion deforms relatively the deformation of bar outer surface
It is weak, it will lead to the uneven of finish forge bar horizontal organization after final each passage superposition.Bar transverse direction edge primary alpha phase is shown as to contain
Amount is few, is the preferable equiaxed structure of nodularization, center portion primary alpha phase content is more, is corynebacterium tissue.
The finish forge deformation slower compared to Forging Equipment Speed, rolling deformation is realized by the change of each passage cross sectional shape
The extension of bar belongs to violent rapid deformation.Rolling deformation shows as the deformation of bar center portion acutely, and deformation heat is big, surface deformation
Relatively weak, deformation heat is smaller, the processing heat that acutely quickly deformation generates each passage can not uniform conductive, cause final
There is the uneven of horizontal organization in TC11 alloy bar material.It is more to show as bar transverse direction edge primary alpha phase content, center portion primary alpha phase
Content is few, but side, center portion primary alpha phase form are consistent, are the line and staff control of spherodized structure and stub tissue.
Pass through the serious shadow of nonuniform organization phenomenon existing for both the above often the TC11 alloy bar material with processing method acquisition
Ring use and the service life of engine blade.
Summary of the invention
Present invention aim to address the leaves of TC11 alloy structure problem of non-uniform caused by current conventional finish forge and rolling
The preparation method of the high uniformly TC11 alloy bar material of piece.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
Step 1, the fiery finish forge of bar one:
The TC11 titanium alloy fine forging stock by cogging forging and two-phase section forging is taken, is heated below transformation temperature, using essence
The fiery multi-pass finish forge of forging machine one is intermediate finish forge base；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained heats the empty even tissue burnt and improve intermediate finish forge base below transformation temperature
Property；
Step 3, the finished product finish forge of bar or rolling blank preparation:
The uniform intermediate base prepared through step 2 is heated below transformation temperature, use the fiery multi-pass finish forge of precise forging machine one for
Finished product bar；
Or the uniform intermediate base for preparing step 2, rolling blank is used as after carrying out lathe cutting head, blanking；
Step 4, finished product finish forge bar homogenization or hot rolling processing:
After heating empty burn below transformation temperature to the finished product bar of step 3 finish forge, improve the structural homogenity of finished product bar
Obtain the high uniformly TC11 alloy bar material of blade；
Or the rolling blank for preparing step 3, it is placed in box resistor furnace for heat treatment, is heated below transformation temperature, used
The fiery multi- pass rolling of 400 cross-arranging type hot-rolling mill one obtains the high uniformly TC11 alloy bar material of blade.
The TC11 titanium alloy fine forging stock of the step 1: it takes and is forged by more than transformation temperature 150 DEG C~200 DEG C high temperature coggings
The typical bifurcation tissue obtained with 40 DEG C below transformation temperature~80 DEG C abundant forging deformations of two-phase section, wherein primary α is spherical, is contained
Amount is greater than 60% TC11 titanium alloy fine forging stock.
TC11 titanium alloy fine forging stock is placed in step-by-step movement resistance furnace by the step 1,40 DEG C~80 DEG C below transformation temperature
Heating.
The passage of the fiery multi-pass finish forge of the one of the step 1 is 3~5 passages, and deflection is 7%~25% per pass, essence
The one accumulative deflection of fire time of forging is 58%~75%.
The step 2 is that finish forge base among a fiery finish forge to Φ 55mm~Φ 65mm is placed in box resistor furnace for heat treatment
In, it is air-cooled after 40 DEG C~80 DEG C empty burning 40min~90min of heating progress below transformation temperature.
The finished product finish forge of the bar of the step 3 is will be through the Φ 55mm~Φ 65mm for the even tissue that step 2 is prepared
Intermediate finish forge base carries out secondary fire according to length and cuts off material, is placed in step-by-step movement resistance furnace again after blanking, 40 below transformation temperature
DEG C~80 DEG C of heating, and using the fire time finish forge of SKK-10 precise forging machine one to Φ 27mm~Φ 42mm specification, finished product finish forge passage is 3~
5 passages, deflection is 7%~25% per pass, and the accumulative deflection of finished product finish forge fire time is 53%~75%.
The step 4 finished product finish forge bar Homogenization Treatments are that the finish forge bar for preparing step 3 is placed in box heat treatment
It is air-cooled after 40 DEG C~80 DEG C empty burning processing 40min~90min below transformation temperature to obtain the high uniform TC11 of blade in resistance furnace
Alloy bar material.
The hot rolling of step 4 bar is will be through hot rolling blank prepared by step 3 70 DEG C~100 DEG C below transformation temperature
Heating carries out heating once and rolling, and heating once and rolling passage is 5~9 passages, and stopping between each passage in the operation of rolling is 4s~12s, per pass
Secondary deflection is 7%~18%, and the one accumulative deflection of fire time of rolling is 70%~95%.The high uniformly TC11 alloy finish forge of blade
The invention beneficial effect of the preparation method of bar is, by using to the bar after intermediate blank finish forge and finished product finish forge and finish forge
It heats identical temperature to carry out homogenizing empty burning processing, the more uniform blade TC11 of widthwise edge, core structure can be obtained
Alloy finish forge bar meets the needs of engine blade is to high uniform bar.
The present invention using 20 DEG C of temperature lower than finish forge temperature also by being used as and being rolled on the basis of high uniformly finish forge bar
Heating temperature processed realizes that the time between each passage stops, so that rolling deformation heat has time enough expansion during the rolling process
It dissipates, the uniform of preceding temperature field is rolled in guarantee per pass, to obtain widthwise edge, core structure more uniform blade TC11 alloy
Rolled bar material meets the needs of engine blade is to high uniform bar.
Detailed description of the invention
Fig. 1 is the high uniformly finish forge bar side of blade TC11 alloy prepared by the present invention, high and low times of center portion tissue；
Fig. 2 is the high uniformly rolled bar material side of blade TC11 alloy prepared by the present invention, high and low times of center portion tissue；
Fig. 3 is the room temperature tensile after the high uniformly finish forge of blade TC11 alloy prepared by the present invention and rolled bar material heat treatment
Intensity and yield strength；
Fig. 4 is that the room temperature after the high uniformly finish forge of blade TC11 alloy prepared by the present invention and rolled bar material heat treatment extends
Rate and the contraction percentage of area.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Embodiment 1
Step 1, the fiery finish forge of bar one:
It takes by 40 DEG C~80 DEG C two-phase sections below more than transformation temperature 150 DEG C~200 DEG C high temperature cogging forgings and transformation temperature
The typical bifurcation tissue that abundant forging deformation obtains, wherein primary α is spherical, and content is greater than 60% TC11 titanium alloy Φ 85mm
Finish forge base, 40 DEG C~80 DEG C heating below transformation temperature, using finish forge base among the fiery finish forge to Φ 55mm of SKK-10 precise forging machine one,
Finish forge passage is 5 passages, and deflection is 15% per pass；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C below transformation temperature
It is air-cooled after the empty burning 60min of heating progress, guarantee properties of product while improving intermediate finish forge base structural homogenity, while more than utilization
Heat carries out online roll straightening；
Step 3, the finished product finish forge of bar:
Among the Φ 55mm for the even tissue prepared through step 2 after finish forge base excision end contracting tail, carried out according to length
Secondary fire cuts off material, is placed in step-by-step movement resistance furnace again after blanking, 40 DEG C~80 DEG C heating below transformation temperature, using SKK-10
For one fire time finish forge of precise forging machine to Φ 27mm specification, finished product finish forge passage is 5 passages, and deflection is 13% per pass, after finish forge
Bar carries out online roll straightening using waste heat；
Step 4, finished product finish forge bar Homogenization Treatments:
The finished product bar of step 3 finish forge is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C skies below transformation temperature
Air-cooled after burning processing 60min, the structural homogenity for improving finished product bar obtains the high uniformly TC11 alloy bar material of blade；
Embodiment 2
Step 1, the fiery finish forge of bar one:
It takes by 40 DEG C~80 DEG C two-phase sections below more than transformation temperature 150 DEG C~200 DEG C high temperature cogging forgings and transformation temperature
The typical bifurcation tissue that abundant forging deformation obtains, wherein primary α is spherical, and content is greater than 60% TC11 titanium alloy Φ
95mm finish forge base, 40 DEG C~80 DEG C heating below transformation temperature, using essence among the fiery finish forge to Φ 65mm of SKK-10 precise forging machine one
Forging stock, finish forge passage are 5 passages, and deflection is 15% per pass；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C below transformation temperature
It is air-cooled after the empty burning 60min of heating progress, guarantee properties of product while improving intermediate finish forge base structural homogenity, while more than utilization
Heat carries out online roll straightening；
Step 3, the finished product finish forge of bar:
Among the Φ 65mm for the even tissue prepared through step 2 after finish forge base excision end contracting tail, carried out according to length
Secondary fire cuts off material, is placed in step-by-step movement resistance furnace again after blanking, 40 DEG C~80 DEG C heating below transformation temperature, using SKK-10
For one fire time finish forge of precise forging machine to Φ 42mm specification, finished product finish forge passage is 3 passages, and deflection is 19% per pass, after finish forge
Bar carries out online roll straightening using waste heat；
Step 4, finished product finish forge bar homogenization or hot rolling processing:
The finished product bar of step 3 finish forge is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C skies below transformation temperature
Air-cooled after burning processing 60min, the structural homogenity for improving finished product bar obtains the high uniformly TC11 alloy bar material of blade.
Fig. 1 is lateral edge, the center portion for the blade high uniformly finish forge bar of TC11 alloy being prepared using the present invention
Mirco structure, lateral edge, the center portion high power group of the TC11 alloy finish forge bar that as can be seen from the figure present invention is prepared
Fine uniform is knitted, the application requirement of the high uniformly finish forge bar of blade TC11 alloy is met.Fig. 3, Fig. 4 are that the present invention is prepared
Blade with the high uniformly finish forge bar of TC11 alloy through 950 DEG C/1h, AC+530 DEG C/6h, the room temperature mechanical property after AC heat treatment
Can, it can be seen that its every mechanical property is consistent, stable from Fig. 3, Fig. 4, meet respective standard requirement.
Embodiment 3
Step 1, the fiery finish forge of bar one:
It takes by 40 DEG C~80 DEG C two-phase sections below more than transformation temperature 150 DEG C~200 DEG C high temperature cogging forgings and transformation temperature
The typical bifurcation tissue that abundant forging deformation obtains, wherein primary α is spherical, and content is greater than 60% TC11 titanium alloy Φ
85mm finish forge base, 40 DEG C~80 DEG C heating below transformation temperature, using essence among the fiery finish forge to Φ 45mm of SKK-10 precise forging machine one
Forging stock, finish forge passage are 5 passages, and deflection is 15% per pass；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C below transformation temperature
It is air-cooled after the empty burning 40min of heating progress, guarantee properties of product while improving intermediate finish forge base structural homogenity, while more than utilization
Heat carries out online roll straightening；
Step 3, the finished product rolling of bar:
By step 2, by the Φ 45mm of preparation, uniformly intermediate base, progress lathe cutting head are carried out according to L=490mm~580mm
As rolling blank after blanking；
Step 4, finished product hot rolling is handled:
The blank that step 3 is rolled is placed in box resistor furnace for heat treatment, 70 DEG C~100 DEG C heating below transformation temperature,
Using fiery 5 passes of 400 cross-arranging type hot-rolling mill one, stopping between each passage in the operation of rolling is 4s, and deflection is 7% per pass
~18%, the one accumulative deflection of fire time of rolling obtains the high uniformly TC11 alloy bar material of blade for 81%.
Embodiment 4
Step 1, the fiery finish forge of bar one:
It takes by 40 DEG C~80 DEG C two-phase sections below more than transformation temperature 150 DEG C~200 DEG C high temperature cogging forgings and transformation temperature
The typical bifurcation tissue that abundant forging deformation obtains, wherein primary α is spherical, and content is greater than 60% TC11 titanium alloy Φ
95mm finish forge base, 40 DEG C~80 DEG C heating below transformation temperature, using essence among the fiery finish forge to Φ 65mm of SKK-10 precise forging machine one
Forging stock, finish forge passage are 5 passages, and deflection is 15% per pass；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained is placed in box resistor furnace for heat treatment, 40 DEG C~80 DEG C below transformation temperature
It is air-cooled after the empty burning 90min of heating progress, guarantee properties of product while improving intermediate finish forge base structural homogenity, while more than utilization
Heat carries out online roll straightening；
Step 3, the finished product rolling of bar:
By step 2, by the Φ 65mm of preparation, uniformly intermediate base carries out lathe cutting head, carries out down according to L=490mm~580mm
As rolling blank after material；
Step 4, finished product hot rolling is handled:
The finished product pieces of bar stock that step 3 is rolled, is placed in box resistor furnace for heat treatment, 70 DEG C below transformation temperature~
100 DEG C of heating, using fiery 9 passes of 400 cross-arranging type hot-rolling mill one, stopping between each passage in the operation of rolling is 12s, per pass
Deflection is 7%~18%, and the one accumulative deflection of fire time of rolling obtains the high uniformly TC11 alloy bar material of blade for 85%.
Fig. 2 is lateral edge, the center portion for the blade high uniformly rolled bar material of TC11 alloy being prepared using the present invention
Mirco structure, lateral edge, the center portion high power group of the TC11 alloy rolled bar material that as can be seen from the figure present invention is prepared
Fine uniform is knitted, the application requirement of the high uniformly rolled bar material of blade TC11 alloy is met.Fig. 3, Fig. 4 are that the present invention is prepared
Blade with the high uniformly rolled bar material of TC11 alloy through 950 DEG C/1h, AC+530 DEG C/6h, the room temperature mechanical property after AC heat treatment
Can, it can be seen that its every mechanical property is consistent, stable from Fig. 3, Fig. 4, meet respective standard requirement.
Claims (9)
1. the blade preparation method of high uniformly TC11 alloy bar material, it is characterised in that the following steps are included:
Step 1, the fiery finish forge of bar one:
The TC11 titanium alloy fine forging stock by cogging forging and two-phase section forging is taken, is heated below transformation temperature, using precise forging machine
One fiery multi-pass finish forge is intermediate finish forge base；
Step 2, intermediate base Homogenization Treatments:
The intermediate finish forge base that step 1 is obtained heats the empty structural homogenity burnt and improve intermediate finish forge base below transformation temperature；
Step 3, the finished product finish forge of bar or rolling blank preparation:
The uniform intermediate base prepared through step 2 is heated below transformation temperature, uses the fiery multi-pass finish forge of precise forging machine one for finished product
Bar；
Or the uniform intermediate base for preparing step 2, rolling blank is used as after carrying out lathe cutting head, blanking；
Step 4, finished product finish forge bar homogenization or hot rolling processing:
After heating empty burn below transformation temperature to the finished product bar for preparing finish forge through step 3, improve the even tissue of finished product bar
Property obtain the high uniformly TC11 alloy bar material of blade；
Or the rolling blank for preparing step 3, it is placed in box resistor furnace for heat treatment, is heated below transformation temperature, using 400 cross
The fiery multi- pass rolling of column hot-rolling mill one obtains the high uniformly TC11 alloy bar material of blade.
2. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
Rapid 1 TC11 titanium alloy fine forging stock: it takes by 40 below more than transformation temperature 150 DEG C~200 DEG C high temperature cogging forgings and transformation temperature
DEG C~the obtained typical bifurcation tissue of 80 DEG C of abundant forging deformations of two-phase section, wherein primary α is spherical, and content is greater than 60%
TC11 titanium alloy fine forging stock.
3. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, which is characterized in that the step
Rapid 1 is placed in TC11 titanium alloy fine forging stock in step-by-step movement resistance furnace, 40 DEG C~80 DEG C heating below transformation temperature.
4. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
The passage of the fiery multi-pass finish forge of the one of rapid 1 is 3~5 passages, and deflection is 7%~25% per pass, and one fire time of finish forge is accumulative to be become
Shape amount is 58%~75%.
5. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
Rapid 2 be that intermediate finish forge base is placed in box resistor furnace for heat treatment, and 40 DEG C~80 DEG C heating carry out empty burning below transformation temperature
Air-cooled processing after 40min~90min.
6. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
The finished product finish forge of rapid 3 bar is that the intermediate finish forge base through the even tissue that step 2 is prepared according to length is carried out secondary fire
Material is cut off, is placed in step-by-step movement resistance furnace again after blanking, 40 DEG C~80 DEG C heating below transformation temperature, using SKK-10 precise forging machine
For one fire time finish forge to Φ 27mm~Φ 42mm specification, finished product finish forge passage is 3~5 passages, per pass deflection be 7%~
25%, the accumulative deflection of finished product finish forge fire time is 53%~75%.
7. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
Rapid 4 finished product finish forge bar Homogenization Treatments are that the finish forge bar for preparing step 3 is placed in box resistor furnace for heat treatment, in phase transformation
Or less 40 DEG C~80 DEG C empty burn air-cooled after processing 40min~90min obtain the high uniform TC11 alloy bar material of blade.
8. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
The rolling heating temperature of rapid 4 hot rolling processing is 70 DEG C~100 DEG C of transformation temperature or less.
9. the blade according to claim 1 preparation method of high uniformly TC11 alloy bar material, it is characterised in that: the step
Rapid 4 hot rolling processing heating once and rolling passage is 5~9 passages, and stopping between each passage in the operation of rolling is 4s~12s, is become per pass
Shape amount is 7%~18%, and the one accumulative deflection of fire time of rolling is 70%~95%.
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| CN108950494A (en) * | 2018-07-30 | 2018-12-07 | 常州苏晶电子材料有限公司 | The production method of strip molybdenum target material |
| CN110605353B (en) * | 2019-08-07 | 2021-02-19 | 江苏天工科技股份有限公司 | Efficient short-flow precision forging and cogging process for titanium and titanium alloy ingots |
| CN111644465B (en) * | 2019-11-22 | 2022-05-17 | 西部金属材料股份有限公司 | High-temperature titanium alloy plate and preparation method and application thereof |
| CN111534772A (en) * | 2020-05-27 | 2020-08-14 | 西部超导材料科技股份有限公司 | Preparation method of TC4 titanium alloy finished bar with short process and low cost |
| CN112453302A (en) * | 2020-11-04 | 2021-03-09 | 攀钢集团攀枝花钛材有限公司江油分公司 | Method for forging titanium alloy TC11 step shaft by using radial forging press |
| CN113877982B (en) * | 2021-08-26 | 2022-07-19 | 北京钢研高纳科技股份有限公司 | Hardly-deformable GH4720Li high-temperature alloy small-size bar, preparation method and blade forging |
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| CN1032962A (en) * | 1987-11-01 | 1989-05-17 | 西北工业大学 | Technology of equiaxial miniaturization of crystal microstructure of alpha+beta titanium alloys |
| JPH08269656A (en) * | 1995-03-30 | 1996-10-15 | Sumitomo Metal Ind Ltd | Production of titanium alloy |
| US20050145310A1 (en) * | 2003-12-24 | 2005-07-07 | General Electric Company | Method for producing homogeneous fine grain titanium materials suitable for ultrasonic inspection |
| RU2321674C2 (en) * | 2002-12-26 | 2008-04-10 | Дженерал Электрик Компани | Method for producing homogenous fine-grain titanium material (variants) |
| CN106134379B (en) * | 2008-08-18 | 2011-06-01 | 西北工业大学 | Nearly alpha titanium alloy isothermal local loads transition region structure property control method |
| FR2979702B1 (en) * | 2011-09-05 | 2013-09-20 | Snecma | PROCESS FOR THE PREPARATION OF TESTS WITH MECHANICAL CHARACTERIZATION OF A TITANIUM ALLOY |
| CN102943228B (en) * | 2012-12-14 | 2014-06-18 | 西北有色金属研究院 | Machining method for improving obdurability of two-phase titanium alloy large-size bar |
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