CN112676503B - Forging processing method for TC32 titanium alloy large-size bar - Google Patents
Forging processing method for TC32 titanium alloy large-size bar Download PDFInfo
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Abstract
The invention relates to the technical field of titanium alloy forging, and particularly discloses a forging processing method of a TC32 titanium alloy large-size bar. The invention can realize the precise regulation and control of the tissue to obtain the required mechanical property, improve the consistency of the flaw detection level of the bar, obtain uniform tissue and performance and increase the yield.
Description
Technical Field
The invention relates to the technical field of titanium alloy, in particular to a forging processing method of a TC32 titanium alloy large-size bar.
Background
The titanium alloy has the characteristics of low density, high specific strength, good corrosion resistance, low elastic modulus, small heat conductivity coefficient, high yield ratio and the like, and has been applied to the fields of aviation, aerospace, ships, chemical engineering, petroleum and the like, wherein in the field of aviation, the titanium alloy is used as one of main structural materials of modern advanced airplanes, is mainly used for undercarriage components of airplanes, is used for skins, frames, beams, heat shields, shells and the like of airframes, and the like, and when a large amount of advanced titanium alloy materials are adopted, one of remarkable marks of the advancement of the new generation airplanes can greatly improve the structural weight reduction effect and the safety reliability.
With the development of the design principle of airplane design from pure static strength to safety-life, damage-safety and the current damage tolerance, the titanium alloy material gradually develops from the direction of pursuing single high strength or high fatigue performance to damage tolerance type comprehensive high performance such as medium and high strength, high modulus, high toughness, low crack propagation rate, good fatigue performance and the like. Typical representatives abroad are a strength damage tolerance type titanium alloy in Ti-6Al-4V beta ELI and a Ti-62222S high strength damage tolerance type titanium alloy. The medium-strength damage tolerance type titanium alloy TC4-DT and the high-strength damage tolerance type titanium alloy TC21 are also developed in China successively. At present, TC4-DT titanium alloy is used for manufacturing integrated large-sized frame, beam, joint and other key force-bearing components. The TC21 titanium alloy serving as a high-strength high-toughness damage tolerance type titanium alloy can be used for large integral forgings and large welding integral components.
With the updating of weaponry, the requirements of high indexes of titanium alloy materials in China are met, and simultaneously, higher requirements on the uniformity and stability of titanium alloy products are provided. The domestic titanium alloy raw material generally has the defects of long processing period, multiple fire times, high cost and the like. For raw materials, excessive forging fire can lead to excessively fine structures, the fine structures can reduce the process window of a small forging, and the final product cannot obtain the optimal comprehensive mechanical property. However, the forging process is less, which easily causes uneven structure, and the free end of the bar is too long, which causes great loss of raw materials. Especially key structural components with important application have higher requirements on the structural uniformity and batch stability of the titanium alloy bar.
The TC32 titanium alloy is a novel medium-high-toughness titanium alloy, has excellent comprehensive performance, has good matching of strength-plasticity-toughness-fatigue performance-damage tolerance performance, and has comprehensive performance superior to the similar medium-high-toughness titanium alloys such as TC4 (American Ti6Al 4V) and TA15 (Russian BT 20). The alloy is suitable for various processes such as two-phase region forging + quasi-beta heat treatment, two-phase region forging + two-phase region heat treatment, quasi-beta forging + two-phase region heat treatment and the like, da/dN is equivalent to TC4-DT titanium alloy in a lamellar structure state, da/dN is equivalent to TC21 titanium alloy in a basket structure state, and meanwhile, the alloy has good fatigue performance and very wide application prospect.
According to the background, the method develops the research on the machining technology of the phi 210 mm-phi 380mm bars aiming at the novel TC32 titanium alloy, realizes the low-cost and large-scale stable production of the TC32 titanium alloy large-size bars, and meets the development requirements of the aviation industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a forging method for a TC32 titanium alloy large-size bar to produce the large-size bar with the diameter phi of 210-380 mm, wherein the titanium alloy bar is an alpha + beta two-phase structure, has good uniformity of the bar structure and stable mechanical property, and is suitable for industrial production.
In order to achieve the purpose, the invention adopts the technical scheme that: a forging processing method of a TC32 titanium alloy large-size bar is characterized in that recrystallization homogenization forging is carried out after cogging forging, then forging is carried out below a beta transition temperature, and finally finished products are forged.
Further, the forging processing method of the TC32 titanium alloy large-specification bar is realized by the following steps:
cogging and forging
1-2 times of upsetting-drawing forging is carried out on TC32 cast ingots at 1150-1200 ℃, the total forging ratio of a single fire is controlled to be 5-10, the height-diameter ratio of the final blank is controlled to be 1.3-1.5, and air cooling is adopted after forging;
(II) homogenization forging
Heating to 30-50 ℃ below the beta transition temperature, carrying out 1-time upsetting-drawing forging on the blank in the step (I), controlling the forging ratio to be 1.6-2.1, controlling the height-diameter ratio of the forged blank to be 1.3-1.5, directly returning to the furnace after forging to 70-100 ℃ above the beta transition temperature, preserving heat for a proper time, and discharging from the furnace;
forging below beta transformation temperature
Heating to 30-70 deg.C below beta transition temperature, and finishing with 3-6 fire;
(IV) forging of finished product
And (5) performing 1-2 fire finished product forging on the blank processed in the step (three).
Further, in the step (II), the holding time of the homogenizing forging is calculated according to the minimum sectional dimension of the billet x the heating coefficient delta (min/mm), and the heating coefficient delta is generally 0.4-0.7.
Further, in the step (II), after the heating is finished at 70-100 ℃ above the beta transition temperature, the first upsetting and the first drawing are carried out, the total upsetting and drawing forging ratio is controlled to be 1.0-1.3, the height-diameter ratio of the forged blank is controlled to be 1.3-1.5, and air cooling or water cooling is adopted after forging.
Further, in the step (III), the 1 st fire is carried out for reversing upsetting forging at the temperature of 30-70 ℃ below the beta transition temperature, the upsetting deformation is controlled to be 20-30%, air cooling is carried out after the upsetting deformation is finished, the 2 nd to 6 th fires are drawing forging, and the drawing forging ratio of each fire is controlled to be 1.4-1.6.
Further, in the step (IV), the finished product is forged by adopting a V-shaped anvil for drawing, and the forging ratio of each fire is controlled to be 1.1-1.3.
Compared with the prior art, the invention has the beneficial effects that:
(1) On the basis of conventional free forging, a recrystallization homogenization forging technology is integrated in cogging forging, so that the titanium alloy material is subjected to static recrystallization to realize rapid refinement and homogenization of the structure, the method is simple and controllable, and the precise regulation and control of the structure can be realized by regulating and controlling forging parameters to obtain the required mechanical property; meanwhile, the problems that the structure is uneven and the beta crystal grains are too fine due to the fact that the beta crystal grains are crushed by multiple fire times and large deformation in a single-phase region in the conventional free forging, and the strength and toughness of the final bar and the forging are poor in matching are solved;
(2) The method adopts reversing upsetting and drawing when forging below the beta transition temperature, strictly controls the height-diameter ratio of the blank entering a two-phase area to be 1.3-1.5, reduces the risk of overheating the blank caused by large deformation amount of the reversing upsetting and drawing, enables the deformation of a difficult deformation area of the blank to be more sufficient, obtains uniform tissues and properties and low anisotropy, improves the consistency of the flaw detection level of the bar, reduces the free end of the bar and increases the yield;
(3) The method is particularly suitable for industrial production of large titanium alloy bars, the forging process is simple and controllable, and the large TC32 titanium alloy bars with good organization uniformity, excellent comprehensive performance, low cost and stable batch can be produced;
(4) The fire number of the produced phi 380mm multiplied by 3000-4000mm bar is only 8 fires, and the fire number of the produced phi 210mm multiplied by 2800-3500mm bar is only 7 fires, so that the processing cost is reduced by about 30% compared with the 12-16 fire processing cost of the traditional titanium alloy forging, the comprehensive yield is improved by about 5%, and the method is suitable for industrial production;
(5) The TC32 titanium alloy bar produced by the method can be used for various processes such as two-phase region forging and quasi-beta heat treatment, two-phase region forging and two-phase region heat treatment, quasi-beta forging and two-phase region heat treatment and the like, and has wide applicability.
Drawings
FIG. 1 is a macroscopic view of a bar material with a diameter of 210mm prepared in the first embodiment of the present invention;
FIG. 2 is a schematic view of an air-fired macrostructure of a bar material with a diameter of 210mm prepared in the first embodiment of the present invention;
FIG. 3 is a microstructure (200X) of a 210mm diameter bar prepared in accordance with a first embodiment of the present invention;
FIG. 4 is a macrostructure diagram of a bar material with a size of 380mm phi prepared in the second embodiment of the present invention;
FIG. 5 is a schematic diagram of the air-fired macrostructure of a bar material with a diameter of 380mm prepared in the second embodiment of the present invention;
FIG. 6 is a microstructure (200X) of a 380mm diameter bar prepared in example two of the present invention.
Detailed Description
The invention will now be further elucidated with reference to specific embodiments. The following are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any similar or equivalent substitution should fall within the protection scope of the present invention without departing from the concept of the present invention. And the details which are not described below should be performed according to the conventional techniques in the art. The following are: "o" indicates the height of a billet having an octagonal cross-section, "□" indicates the height of a billet having a square cross-section, and "Φ" indicates the diameter of a billet having a circular cross-section.
EXAMPLE one (phi 210mm size bar forging method)
Selecting a TC32 titanium alloy cast ingot with the specification of phi 780mm, wherein the beta transition temperature of the cast ingot is 905 ℃. The specific forging process is as follows:
cogging and forging
Finishing divided fire 2, heating TC32 cast ingot to 1150 ℃ by fire 1, preserving heat, discharging from a furnace, performing two-upsetting and two-drawing to a square, controlling the forging ratio to be 9-10, controlling the height-diameter ratio of the blank to be about 2.0, and performing air cooling after forging; heating and preserving heat at 1080 ℃ by fire 2, performing two-upsetting two-drawing forging to the eight directions, controlling the forging ratio to be 9-10, finally controlling the height-diameter ratio of the blank to be 1.5, and performing air cooling after forging;
(II) homogenization forging
Firstly, heating the blank in the step (I) to 870 ℃, preserving heat, performing one-upsetting one-drawing forging to eight directions after discharging, controlling the forging ratio to be 2.1, controlling the height-diameter ratio of the blank after forging to be 1.5, directly returning to 990 ℃ after forging, controlling the time for returning to the furnace and transferring materials to be not more than 120s, controlling the heat preservation time to be 330-360min, performing one-upsetting one-drawing forging to four directions after discharging, controlling the forging ratio to be 1.26, controlling the height-diameter ratio of the blank to be 1.5, and cooling by water after forging;
forging below (III) beta transition temperature
And (4) forging the blank processed in the step (two) for 5 times to 230mm in the eight direction. Wherein, the 1-step heating is reversing upsetting-drawing forging, the heating temperature is 875 ℃, the two-upsetting-two-drawing forging is carried out to the eight direction, the upsetting deformation is controlled at 25 percent, and air cooling is carried out after forging; drawing out and forging the rest 4 fires, controlling the heating temperature to 870 ℃, controlling the forging ratio at 1.5-1.6 every fire, finally forging to 230mm in the eight direction, and cooling in air after forging;
(IV) forging the finished product
And (5) after the blank material in the step (III) is heated at 865 ℃, rounding and drawing by adopting a V-shaped anvil to the finished product size, wherein the drawing-forging ratio is controlled to be 1.13, and the final finished product specification is a bar material with the specification of phi 210 mm.
FIG. 1 is a photograph of R-state macrostructure of a bar material with a diameter of 210mm prepared by forging according to the first process of example, and it can be seen that the R-state macrostructure has no obvious metallurgical defect and the macrostructure is fuzzy; FIG. 2 is a photograph of the bar after being air-fired, which shows that the bar after being air-fired has a uniform macrostructure and fine grains; FIG. 3 is a photograph showing the microstructures of the edge, R/2 and core of the corresponding bar, and it can be seen that the microstructures from the edge to the core are very uniform. Table 1 shows the mechanical properties of the corresponding bars, and it can be seen that the bars have excellent comprehensive properties:
EXAMPLE two (method of forging a bar material having a diameter of 380 mm)
Selecting a TC32 titanium alloy cast ingot with the specification of phi 780mm, wherein the beta transition temperature of the cast ingot is 905 ℃. The specific forging process is as follows:
cogging and forging
Heating a TC32 cast ingot to 1150 ℃ for heat preservation, taking the cast ingot out of a furnace, performing two upsetting, two-time drawing and eight-direction drawing, controlling the forging ratio to be 5-6, performing diagonal drawing to 600mm after the second upsetting is finished, controlling the height-diameter ratio of the ingot to be 1.5, and performing air cooling after forging;
(II) homogenization forging
Firstly, heating the blank in the step (I) to 875 ℃ for heat preservation, performing one-heading one-drawing forging to an octagon after discharging, controlling the forging ratio to be 1.6, controlling the height-diameter ratio of the blank after forging to be 1.5, directly returning to 990 ℃ after forging, controlling the time for returning to the furnace and transferring materials to be not more than 120s, controlling the heat preservation time to be 330-360min, performing one-heading one-drawing forging to the octagon for 600mm after discharging, controlling the forging ratio to be 1.26, controlling the height-diameter ratio of the blank to be 1.5, and performing air cooling after forging;
forging below (III) beta transition temperature
Forging the blank processed in the step (II) for 3 times to an octagon 410mm, wherein 1 fire is reversing upsetting forging, the heating temperature is 875 ℃, two-upsetting and two-drawing forging is carried out to the octagon, the upsetting deformation is controlled at 30%, and air cooling is carried out after forging; drawing out and forging the rest 2 fires, controlling the heating temperature to 870 ℃, controlling the forging ratio at 1.5-1.6 every fire, finally forging to 410mm in eight directions, and air cooling after forging;
(IV) forging the finished product
And (3) after the blank material which is subjected to the step (III) is heated at 865 ℃, performing round throwing and drawing by adopting a V-shaped anvil until the size of the finished product is achieved, controlling the drawing-forging ratio to be 1.13, and finally obtaining the finished product with the specification of a phi 380mm rod material.
FIG. 4 is a photograph of the R-state macrostructure of a bar material with a specification of phi 380mm prepared by forging according to the second process of example, and it can be seen that the R-state macrostructure has no obvious metallurgical defect and has uniform and fine structure; FIG. 5 is a photograph of the macrostructure of the bar after being air-fired, and it can be seen that the macrostructure is uniform and the crystal grains are fine after being air-fired; FIG. 6 is a photograph of the microstructures of the edge, R/2 and core of the corresponding bar, and it can be seen that the microstructures from the edge to the core are very uniform. Table 1 shows that the bars have excellent comprehensive properties, corresponding to the mechanical properties of the bars.
TABLE 1 mechanical properties of TC32 titanium alloy bars
Claims (2)
1. The forging processing method of the TC32 titanium alloy large-size bar is characterized by comprising the following steps of performing recrystallization homogenization forging after cogging forging, then forging below a beta transition temperature, and finally forging a finished product, wherein the forging processing method is realized by the following steps:
cogging and forging
1-2 times of upsetting-drawing forging is carried out on TC32 cast ingots at 1150-1200 ℃, the total forging ratio of a single fire is controlled to be 5-10, the height-diameter ratio of the final blank is controlled to be 1.3-1.5, and air cooling is adopted after forging;
(II) homogenization forging
Heating temperature is 30-50 ℃ below beta transition temperature, upsetting and forging are carried out on the blank in the step (I) for 1 heating number of times, the forging ratio is controlled to be 1.6-2.1, the height-diameter ratio of the forged blank is controlled to be 1.3-1.5, the blank is directly re-melted to be 70-100 ℃ above the beta transition temperature after forging, heat preservation is carried out for a proper time, upsetting and one-pulling are carried out, the total upsetting-and-pulling forging ratio is controlled to be 1.0-1.3, the height-diameter ratio of the forged blank is controlled to be 1.3-1.5, air cooling or water cooling is adopted after forging, wherein the heat preservation time of homogenizing forging is calculated according to the minimum section size of the blank multiplied by a heating coefficient delta, the heating coefficient delta is generally 0.4-0.7, and the unit of the heating coefficient delta is min/mm;
forging below beta transformation temperature
Heating to 30-70 deg.C below beta transition temperature, and performing reverse upsetting forging at 1 st fire at 30-70 deg.C below beta transition temperature, controlling upsetting deformation at 20-30%, air cooling after completion, performing elongation forging at 2-6 th fire, and controlling elongation forging ratio at each fire to 1.4-1.6;
(IV) forging the finished product
And (5) performing 1-2 fire finished product forging on the blank processed in the step (three).
2. The forging processing method of the TC32 titanium alloy large-size bar as recited in claim 1, wherein in the step (IV), the finished product is forged by adopting a V-shaped anvil for elongation, and the forging ratio is controlled to be between 1.1 and 1.3 per fire.
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| CN113145778B (en) * | 2021-04-27 | 2022-10-04 | 西北有色金属研究院 | Cogging forging method for improving structural uniformity of beta titanium alloy |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070125A (en) * | 2014-03-11 | 2014-10-01 | 宁夏东方钽业股份有限公司 | Forging machining method of large-sized bar materials of TC4 (Ti-6Al-4V) titanium alloy |
| CN106734796A (en) * | 2016-12-14 | 2017-05-31 | 西部超导材料科技股份有限公司 | The engine forging method of high temperature resistant titanium alloy large scale rod bar |
| CN107350405A (en) * | 2017-07-19 | 2017-11-17 | 湖南金天钛业科技有限公司 | The free forging method of TA19 titanium alloy large size bars |
| CN109454188A (en) * | 2018-11-02 | 2019-03-12 | 湖南金天钛业科技有限公司 | Ti55531 titanium alloy large size bar free forging method |
| CN109500331A (en) * | 2018-11-02 | 2019-03-22 | 湖南金天钛业科技有限公司 | TC25 titanium alloy large size bar processing method |
| CN110586828A (en) * | 2019-10-11 | 2019-12-20 | 湖南金天钛业科技有限公司 | Free forging method of Ti662 titanium alloy large-size bar |
-
2020
- 2020-11-30 CN CN202011366920.7A patent/CN112676503B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070125A (en) * | 2014-03-11 | 2014-10-01 | 宁夏东方钽业股份有限公司 | Forging machining method of large-sized bar materials of TC4 (Ti-6Al-4V) titanium alloy |
| CN106734796A (en) * | 2016-12-14 | 2017-05-31 | 西部超导材料科技股份有限公司 | The engine forging method of high temperature resistant titanium alloy large scale rod bar |
| CN107350405A (en) * | 2017-07-19 | 2017-11-17 | 湖南金天钛业科技有限公司 | The free forging method of TA19 titanium alloy large size bars |
| CN109454188A (en) * | 2018-11-02 | 2019-03-12 | 湖南金天钛业科技有限公司 | Ti55531 titanium alloy large size bar free forging method |
| CN109500331A (en) * | 2018-11-02 | 2019-03-22 | 湖南金天钛业科技有限公司 | TC25 titanium alloy large size bar processing method |
| CN110586828A (en) * | 2019-10-11 | 2019-12-20 | 湖南金天钛业科技有限公司 | Free forging method of Ti662 titanium alloy large-size bar |
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