CN109468492B - Titanium alloy plate with high impact toughness and processing technology thereof - Google Patents
Titanium alloy plate with high impact toughness and processing technology thereof Download PDFInfo
- Publication number
- CN109468492B CN109468492B CN201910044491.2A CN201910044491A CN109468492B CN 109468492 B CN109468492 B CN 109468492B CN 201910044491 A CN201910044491 A CN 201910044491A CN 109468492 B CN109468492 B CN 109468492B
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- rolling
- alloy plate
- plate
- forging
- 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
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 69
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 39
- 238000005242 forging Methods 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000003723 Smelting Methods 0.000 claims abstract description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 230000002902 bimodal effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 39
- 230000008569 process Effects 0.000 claims description 27
- 239000010936 titanium Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000002344 surface layer Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 13
- 230000009466 transformation Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 229910052758 niobium Inorganic materials 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Forging (AREA)
- Metal Rolling (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a titanium alloy plate with high impact toughness and a processing technology thereof, belonging to the technical field of nonferrous metal processing, and adopting the technical scheme that the titanium alloy plate with high impact toughness is an equiaxial or bimodal structure, has yield strength of 900-970 MPa, tensile strength of 950-1050 MPa and elongation of 10-12%, and has a V-shaped notch impact power of more than or equal to 50J at the temperature of-10 ℃. The processing technology comprises the following steps: smelting titanium sponge serving as a raw material, and forging at 800-960 ℃ to obtain a plate blank; and (3) treating the plate blank at 880-980 ℃ for 30-60 min, and then rolling and cooling to obtain the titanium alloy plate. The titanium alloy plate has the advantages of simplified processing technology, energy conservation, high processing efficiency, low cost and good prospect of industrial scale production; the obtained titanium alloy plate has high impact toughness, excellent comprehensive mechanical property and wide application.
Description
Technical Field
The invention relates to the technical field of nonferrous metal processing, in particular to a titanium alloy plate with high impact toughness and a processing technology thereof.
Background
The titanium alloy has higher yield strength, high specific modulus, lower density, higher specific strength, excellent corrosion resistance and good mechanical property, and is widely applied to the fields of aerospace, automobiles, medical treatment, chemical engineering, ocean engineering and the like.The titanium alloy is often used as a structural material to be applied to submarines, deep submergence vehicles and ships, and the titanium alloy oil well pipe has a great application prospect in the field of offshore oil exploitation. In addition to the conventional mechanical properties, the requirements for impact toughness of titanium alloys are also very high in these applications. Impact toughness refers to the ability of a material to absorb plastic deformation work and fracture work under the action of an impact load, and can reflect the resistance of the material to external impact load, and generally is defined by an impact toughness value (a)k) And the impact work (Ak) in J/cm2And J (joules).
Generally, the impact toughness of titanium alloy is not high and is not matched with the requirements of application occasions, CN106695064A Chinese patent discloses a method for optimizing the toughness matching of metastable titanium alloy, a cooling atmosphere with higher temperature is provided under the condition of heat treatment, a groove area base material is heated to certain temperature under the condition of argon arc welding, a welding forming process with three times of welding and gradually increased fusion area is adopted under the condition of electron beam welding, so that the temperature field of a heat treatment structure/welding joint area is optimized, the cooling speed is slowed down, the synthesis of metastable brittle phase is inhibited, the toughness of a welding joint is improved, for the titanium alloy, the structure type formed by a hot working process has great influence on the performances such as strength, impact toughness and the like, a certain number of transformation 2 structures are distributed on a matrix of β transformation structure, the total content of primary α phase is not more than 50%, a certain number of transformation 2 structures are distributed on a matrix of primary α phase with uniformly distributed primary structures, the grain boundary of which is more than 50%, the equiaxial structure is distributed on a matrix of β transformation structure, the same initial α phase, the same titanium alloy, the microstructure is obtained, the same as a transverse microstructure, the equivalent structure, the microstructure of a transverse microstructure is obtained, the equivalent titanium alloy, the microstructure is obtained, the microstructure of a transverse microstructure with the highest impact toughness of a transverse microstructure, the same microstructure is obtained, the equivalent titanium alloy, the microstructure is obtained by the equivalent microstructure of a.
Disclosure of Invention
In order to solve the technical problem of poor impact toughness of the existing titanium alloy, the invention provides the titanium alloy plate with high impact toughness and the processing technology thereof.
The technical scheme adopted by the invention is as follows: the titanium alloy sheet material with high impact toughness is an equiaxial or bimodal structure, the yield strength is 900-970 MPa, the tensile strength is 950-1050 MPa, the elongation is 10-12%, and the impact energy of a V-shaped notch at-10 ℃ is more than or equal to 50J.
The invention also provides a processing technology of the titanium alloy plate with high impact toughness, which comprises the following steps:
(1) forging a plate blank: smelting titanium sponge serving as a raw material, and forging the titanium sponge in a two-phase region at 800-960 ℃ to obtain a plate blank;
(2) rolling a plate blank: and (3) treating the plate blank at 880-980 ℃ for 30-60 min, and then rolling and cooling to obtain the titanium alloy plate.
Preferably, the forging condition in the step (1) is two-phase region forging at 800-960 ℃, and a three-pier and three-drawing process is adopted.
Preferably, the alloy elements are added in the smelting process in the step (1), and the chemical component content (wt.%) of the slab is controlled to be Al: 5.0% -7.0%, Nb: 2.0% -3.0%, Zr: 0.5% -2.0%, Mo: 0.7% -1.2%, Fe: 0.02% -0.05%, Si: 0.01% -0.03% and the balance of Ti; the texture of the resulting slab is either equiaxed or bimodal.
Preferably, the rolling in the step (2) is performed in two passes on a two-roll or four-roll reversing mill.
More preferably, the initial rolling temperature is controlled to be 850-950 ℃ during rolling in the step (2), and the rolling speed is 0.001s-1~ 1s-1The accumulated deformation is 30% -60%.
Preferably, the cooling condition is air cooling, and the cooling rate is 10-20 ℃/min.
Preferably, the surface layer of 0.5-1mm is scalped and removed before rolling in the step (2).
Preferably, the titanium alloy plate is of an equiaxial or bimodal structure, the yield strength is 900-970 MPa, the tensile strength is 950-1050 MPa, the elongation is 10-12%, and the impact energy of a V-shaped notch at-10 ℃ is more than or equal to 50J.
Preferably, the specification ranges of the titanium alloy plate are as follows: the thickness is 12-18 mm, the width is 600-1010 mm, and the length is 2000-3000 mm.
According to the technical scheme, the titanium alloy plate with high impact toughness is provided, the titanium alloy plate is of an equiaxial or dual-state structure, the yield strength is 900-970 MPa, the tensile strength is 950-1050 MPa, the elongation is 10-12%, and the V-notch impact power is larger than or equal to 50J at minus 10 ℃.
The invention has the beneficial effects that: the titanium alloy plate provided by the invention has high impact toughness and excellent comprehensive mechanical property; the optimized processing technology has simplified steps, scientific and reasonable temperature control, energy conservation, high efficiency, greatly reduced cost and good prospect of industrial scale production; the obtained plate can be widely applied to the fields of submarines, deep submergence vehicles, ships, marine oil exploitation and the like.
Drawings
FIG. 1 shows the metallographic structure of a titanium alloy slab obtained after forging in example 1 of the present invention;
FIG. 2 is a metallographic structure of a titanium alloy obtained after completion of hot working in example 1 of the present invention;
FIG. 3 is a metallographic structure of a titanium alloy obtained after completion of hot working in example 2 of the present invention;
FIG. 4 is a metallographic structure of a titanium alloy obtained after completion of hot working in example 3 of the present invention;
FIG. 5 shows the metallographic structure of a titanium alloy obtained after hot working in example 4 of the present invention;
FIG. 6 is a metallographic structure of a titanium alloy obtained by hot working in comparative example 1.
Detailed Description
The high impact toughness titanium alloy sheet material and the processing method thereof provided by the present invention are described in detail below with specific examples, but the scope of the present invention is not limited in any way, and modifications or similar substitutions made by those skilled in the art according to the technical solutions should be included in the scope of the present invention, and the equipment and methods used in the examples, if not specifically mentioned, are commercially available, and if not specifically mentioned, are conventional.
Example 1
The titanium alloy plate with high impact toughness is processed according to the following process steps:
(1) the forging slab is prepared by the forging process, wherein sponge titanium is used as a raw material, smelting is carried out for three times by adopting a vacuum consumable arc furnace, alloy elements are added in the smelting process, the chemical component contents (wt.%) of the slab are controlled to be 6.8% of Al, 2.8% of Nb, 1.8% of Zr, 1.2% of Mo, 0.03% of Fe, 0.02% of Si and the balance of Ti, then forging is started at 950 ℃, the final forging temperature is 800 ℃, the forging process is three-pier three-drawing, namely, upsetting is carried out for three times, drawing is carried out for three times, and the forging process is carried out alternately at intervals, and the reduction amount of the last pass is 60%.
(2) Rolling a plate blank: heating the plate blank in a stepping gas heating furnace at 930 deg.C for 50 min, discharging the titanium alloy plate blank, removing oxide skin with high-pressure water, and rolling on a two-roll reversible rolling mill at 900 deg.C and 0.001s-1Accumulating the deformation amount by 60%; and then placing the rolled plate on a cooling bed for air cooling, wherein the cooling rate is about 10-20 ℃/min, namely, the cooling speed of the plate is controlled to be 10-20 ℃/min, and thus the titanium alloy plate is obtained.
The properties of the obtained titanium alloy sheet were measured, and the metallographic structure is shown in fig. 2, and it can be seen from fig. 2 that the structure is a typical two-state structure, and on the basis of the lamellar structure of β transformation, primary α phases which are not connected with each other are distributed, but the total amount is not more than 50%.
The mechanical test result shows that the impact toughness at-10 ℃ is 90J/cm2The room-temperature tensile property is as follows: sigmab= 1020MPa，σ0.2= 950 MPa，δ = 10%。
Note: sigmabDenotes the tensile strength, σ0.2The yield strength is shown and the elongation is shown as δ.
Example 2
The titanium alloy plate with high impact toughness is processed according to the following process steps:
(1) forging a plate blank: the method comprises the following steps of smelting the sponge titanium serving as a raw material for three times by using a vacuum consumable arc furnace, adding alloy elements in the smelting process, and controlling the chemical component content (wt.%) of a plate blank to be Al: 6.8%, Nb: 2.8%, Zr: 1.8%, Mo: 1.2%, Fe: 0.03%, Si: 0.02 percent, and the balance of Ti; and then starting forging at 950 ℃, wherein the final forging temperature is 800 ℃, the forging process is three-pier and three-drawing, namely, upsetting is carried out for three times, drawing is carried out for three times, and the forging is carried out at intervals, wherein the rolling reduction of the last pass is 60%. Preparing a plate blank by a forging process;
(2) rolling a plate blank: heating the plate blank in a stepping gas heating furnace at 980 deg.C for 50 min, discharging the titanium alloy plate blank, removing oxide skin with high pressure water, and rolling on a two-roll reversible rolling mill at 950 deg.C and 0.1s-1Accumulating the deformation amount by 60%; and placing the rolled plate on a cooling bed for air cooling, wherein the cooling rate is about 10-20 ℃/min, and obtaining the titanium alloy plate.
The performance of the obtained titanium alloy sheet is measured, the metallographic structure is shown in the attached figure 3, the obtained structure is a typical two-state structure, a small amount of nascent α phase is distributed on a β transformed lamellar structure matrix, the total amount is not more than 50 percent, and the mechanical test result shows that the impact toughness at the temperature of-10 ℃ is 94J/cm2The room-temperature tensile property is as follows: sigmab= 900 MPa，σ0.2= 950MPa，δ = 12%。
Example 3
The titanium alloy plate with high impact toughness is processed according to the following process steps:
(1) forging a plate blank: the method comprises the following steps of smelting the sponge titanium serving as a raw material for three times by using a vacuum consumable arc furnace, adding alloy elements in the smelting process, and controlling the chemical component content (wt.%) of a plate blank to be Al: 6.8%, Nb: 2.8%, Zr: 1.8%, Mo: 1.2%, Fe: 0.03%, Si: 0.02 percent, and the balance of Ti; and then starting forging at 950 ℃, wherein the final forging temperature is 800 ℃, the forging process is three-pier and three-drawing, and the rolling reduction of the last pass is 60%. Preparing a plate blank by a forging process;
(2) rolling a plate blank: heating the plate blank in a stepping gas heating furnace at 880 deg.C for 50 min, discharging the titanium alloy plate blank, removing oxide skin with high-pressure water, and rolling on a two-roll reversible rolling mill at 850 deg.C and 1s rolling speed-1Accumulating the deformation amount by 60%; and placing the rolled plate on a cooling bed for air cooling, wherein the cooling rate is about 10-20 ℃/min, and obtaining the titanium alloy plate.
The performance of the obtained titanium alloy plate is measured, and the metallographic structureReferring to FIG. 4, the resulting structure is shown to be an equiaxed structure with a small amount of transformation β distributed on a uniformly distributed primary α phase matrix with a content of over 50%2The room-temperature tensile property is as follows: sigmab= 1050 MPa，σ0.2= 970MPa，δ = 10%。
Example 4
The titanium alloy plate with high impact toughness is processed according to the following process steps:
(1) forging a plate blank: the method comprises the following steps of smelting the sponge titanium serving as a raw material for three times by using a vacuum consumable arc furnace, adding alloy elements in the smelting process, and controlling the chemical component content (wt.%) of a plate blank to be Al: 6.8%, Nb: 2.8%, Zr: 1.8%, Mo: 1.2%, Fe: 0.03%, Si: 0.02 percent, and the balance of Ti; then starting forging at 950 ℃, wherein the final forging temperature is 800 ℃, the forging process is three-pier and three-drawing, the rolling reduction of the last pass is 60%, and a plate blank is prepared by the forging process;
(2) rolling a plate blank: heating the plate blank in a stepping gas heating furnace at 880 deg.C for 50 min, discharging the titanium alloy plate blank, removing oxide skin with high-pressure water, and rolling on a two-roll reversible rolling mill at 850 deg.C and 0.1s-1Accumulating the deformation amount by 30%; and placing the rolled plate on a cooling bed for air cooling, wherein the cooling rate is about 10-20 ℃/min, and obtaining the titanium alloy plate.
The performance of the obtained titanium alloy sheet is measured, the metallographic structure is shown in figure 5, the obtained structure is an equiaxial structure, a small amount of transition β structures are distributed on a primary α phase matrix which is uniformly distributed and contains more than 50%, and the mechanical test result shows that the impact toughness at the temperature of-10 ℃ is 84J/cm2The room-temperature tensile property is as follows: sigmab= 980 MPa，σ0.2= 900MPa，δ = 12%。
Comparative example 1
The titanium alloy plate with high impact toughness is processed according to the following process steps:
(1) forging a plate blank: the method comprises the following steps of smelting the sponge titanium serving as a raw material for three times by using a vacuum consumable arc furnace, adding alloy elements in the smelting process, and controlling the chemical component content (wt.%) of a plate blank to be Al: 6.8%, Nb: 2.8%, Zr: 1.8%, Mo: 1.2%, Fe: 0.03%, Si: 0.02 percent, and the balance of Ti; and then starting forging at 950 ℃, wherein the final forging temperature is 800 ℃, the forging process is three-pier and three-drawing, and the rolling reduction of the last pass is 60%. Preparing a plate blank by a forging process;
(2) rolling a plate blank: heating the plate blank in a stepping gas heating furnace at 1020 deg.C for 50 min, discharging the titanium alloy plate blank, removing oxide skin with high-pressure water, and rolling on a two-roll reversible rolling mill at 980 deg.C and 0.001s-1Accumulating the deformation amount by 60%; and placing the rolled plate on a cooling bed for air cooling, wherein the cooling rate is about 10-20 ℃/min, and obtaining the titanium alloy plate.
The performance of the obtained titanium alloy sheet is measured, the metallographic structure is shown in figure 6, and the obtained structure is a Widmannstatten structure which has coarse original β crystal grains and complete crystal boundary α phase, a larger-sized 'bundle set' is formed in the original β crystal grains, more α pieces of the same 'bundle set' are parallel to each other and have the same orientation, and the mechanical test result shows that the impact toughness at the temperature of-10 ℃ is 58J/cm2The room-temperature tensile property is as follows: sigmab= 950 MPa，σ0.2= 850 MPa, δ = 10%. The temperature in the rolling process of the comparative example plate blank is higher than the temperature selected by the method, the structure of the obtained titanium alloy plate is different from the equiaxial or bimodal structure of the invention, and the impact toughness is greatly reduced.
The mechanical properties of the embodiment of the invention are compared with those of the comparative example, and it can be seen that the impact toughness at minus 10 ℃, the tensile strength at room temperature and the yield strength of the embodiment are all stronger than those of the comparative example, and therefore, the titanium alloy plate prepared by the embodiment of the invention has more excellent mechanical properties.
In conclusion, the processing technology of the titanium alloy plate provided by the invention is simplified, and only the raw materials are forged, heated and cooled through comprehensively controlling the temperature and time of the forging, plate blank heating and heat preservation and rolling processes and controlling the cooling rate,Rolling and cooling to obtain the titanium alloy plate, so that the energy is saved, the processing efficiency is high, the processing cost is greatly reduced, and the industrial scale production prospect is good; the obtained titanium alloy plate has high impact toughness which is not lower than 65J/cm2The impact toughness of the titanium alloy is higher than that of the common titanium alloy, and the titanium alloy has excellent comprehensive mechanical properties, and can be widely applied to the fields of submarines, deep submergence vehicles, ships, marine oil exploitation and the like.
Claims (9)
1. The processing technology of the titanium alloy plate with high impact toughness is characterized by comprising the following steps:
(1) forging a plate blank: smelting titanium sponge serving as a raw material, and forging the titanium sponge in a two-phase region at 800-960 ℃ to obtain a plate blank;
(2) rolling a plate blank: treating the plate blank at 880-980 ℃ for 30-60 min, and then rolling and cooling to obtain a titanium alloy plate;
in the step (1), alloy elements are added in the smelting process, the chemical composition content (wt.%) of the plate blank is controlled to be 5.0-7.0% of Al, 2.0-3.0% of Nb, 0.5-2.0% of Zr, 0.7-1.2% of Mo, 0.02-0.05% of Fe, 0.01-0.03% of Si and the balance of Ti, the structure of the obtained plate blank is a bimodal structure, the V-notch impact power is more than or equal to 50J at-10 ℃, and an unconnected primary α phase is distributed on a lamellar structure matrix transformed from β, and the total amount is not more than 50%.
2. The machining process according to claim 1, wherein the forging condition in the step (1) is 800-960 ℃ two-phase region forging, and a three-pier three-drawing process is adopted.
3. The process according to claim 1, wherein the rolling in step (2) is a two-pass rolling on a two-roll or four-roll reversing mill.
4. The process according to claim 1 or 3, wherein the initial rolling temperature is controlled to be 850-950 ℃ and the rolling speed is controlled to be 0.001s during rolling in the step (2)-1~ 1s-1Is accumulated and accumulatedThe deformation is 30% -60%.
5. The process according to claim 1, wherein the cooling condition is air cooling, and the cooling rate is 10-20 ℃/min.
6. The process according to claim 1, wherein the step (2) of removing the 0.5-1mm surface layer before rolling.
7. The processing technology as claimed in claim 1, wherein the titanium alloy sheet material has a two-state structure, a yield strength of 900 to 970 MPa, a tensile strength of 950 to 1050 MPa, and an elongation of 10 to 12%.
8. The process according to claim 1, wherein the titanium alloy sheet material has a specification range of: the thickness is 12-18 mm, the width is 600-1010 mm, and the length is 2000-3000 mm.
9. The processing technology of claim 1 is based on the titanium alloy plate with high impact toughness, and is characterized in that the titanium alloy plate is a two-state structure, the yield strength is 900-970 MPa, the tensile strength is 950-1050 MPa, the elongation is 10-12%, and the V-notch impact energy at-10 ℃ is more than or equal to 50J.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044491.2A CN109468492B (en) | 2019-01-17 | 2019-01-17 | Titanium alloy plate with high impact toughness and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044491.2A CN109468492B (en) | 2019-01-17 | 2019-01-17 | Titanium alloy plate with high impact toughness and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109468492A CN109468492A (en) | 2019-03-15 |
| CN109468492B true CN109468492B (en) | 2020-07-07 |
Family
ID=65678717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910044491.2A Expired - Fee Related CN109468492B (en) | 2019-01-17 | 2019-01-17 | Titanium alloy plate with high impact toughness and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109468492B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695264B (en) * | 2020-12-02 | 2021-12-21 | 中国科学院金属研究所 | Method for preparing large equiaxed grains with different orientations |
| CN114672682B (en) * | 2022-02-23 | 2023-04-07 | 北京科技大学 | High-performance powder metallurgy titanium alloy part and preparation method thereof |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625946A (en) * | 1979-08-06 | 1981-03-12 | Tech Res & Dev Inst Of Japan Def Agency | Sintered titanium alloy excellent in strength |
| FR2614040B1 (en) * | 1987-04-16 | 1989-06-30 | Cezus Co Europ Zirconium | PROCESS FOR THE MANUFACTURE OF A PART IN A TITANIUM ALLOY AND A PART OBTAINED |
| US4898624A (en) * | 1988-06-07 | 1990-02-06 | Aluminum Company Of America | High performance Ti-6A1-4V forgings |
| CN100406583C (en) * | 2004-11-16 | 2008-07-30 | 中国航空工业第一集团公司北京航空材料研究院 | Beta-phase transformation point thermal treatment process for titanium alloy |
| CN101928859B (en) * | 2009-12-09 | 2012-01-25 | 北京有色金属研究总院 | Titanium alloy with high impact toughness and preparation method thereof |
| CN102978437A (en) * | 2012-11-23 | 2013-03-20 | 西部金属材料股份有限公司 | Alpha plus beta two-phase titanium alloy and method for processing same |
| CN103409658B (en) * | 2013-07-09 | 2016-04-13 | 中国船舶重工集团公司第七二五研究所 | A kind of resistance to 600 DEG C of high strength at high temperature can welding titanium alloy |
| CN105296799A (en) * | 2014-06-25 | 2016-02-03 | 周萌 | TC11 titanium alloy and technique for optimizing performance of TC11 titanium alloy |
| CN106148761B (en) * | 2016-08-31 | 2017-12-08 | 中国船舶重工集团公司第七二五研究所 | A kind of anti-corrosion solderable titanium alloy of high intensity high impact toughness and preparation method thereof |
| CN106269981A (en) * | 2016-09-22 | 2017-01-04 | 天津钢管集团股份有限公司 | It is applicable to the production method of the titanium alloy seamless pipe of drilling rod material |
| CN106967897B (en) * | 2016-11-18 | 2019-02-19 | 中国科学院金属研究所 | A kind of inexpensive, Ti alloy with high performance |
| CN107058800B (en) * | 2017-03-02 | 2018-10-19 | 中国船舶重工集团公司第七二五研究所 | A kind of anti-corrosion solderable crack arrest titanium alloy of middle intensity and preparation method thereof |
| CN106994471A (en) * | 2017-03-02 | 2017-08-01 | 中国船舶重工集团公司第七二五研究所 | A kind of 780MPa intensity levels electron beam fuse 3D printing component titanium alloy wire materials |
| CN108611529B (en) * | 2018-06-13 | 2020-04-21 | 燕山大学 | Microcrystal high-strength corrosion-resistant titanium alloy pipe and preparation method thereof |
-
2019
- 2019-01-17 CN CN201910044491.2A patent/CN109468492B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109468492A (en) | 2019-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7337207B2 (en) | titanium alloy | |
| Lampman | Wrought titanium and titanium alloys | |
| JP3758508B2 (en) | Manufacturing method of duplex stainless steel pipe | |
| KR20200019459A (en) | Twinning/transformation induced plasticity high entropy steels and method for manufacturing the same | |
| EP0683242B1 (en) | Method for making titanium alloy products | |
| CN109161726B (en) | High-strength high-toughness corrosion-resistant titanium alloy and preparation method thereof | |
| CN111826550B (en) | Moderate-strength nitric acid corrosion resistant titanium alloy | |
| WO2014176357A1 (en) | Copper-nickel-tin alloy with high toughness | |
| GB2158373A (en) | Method of manufacturing rolled titanium alloy sheets | |
| CN113151747A (en) | High-temperature corrosion resistant aluminum-containing austenitic stainless steel and preparation method thereof | |
| CN114657417B (en) | High-strength plastic titanium alloy suitable for cold deformation processing and preparation method thereof | |
| CN111020414A (en) | Preparation method of short fiber reinforced high-temperature titanium alloy bar for 700-750 DEG C | |
| CN109468492B (en) | Titanium alloy plate with high impact toughness and processing technology thereof | |
| JP5605232B2 (en) | Hot rolling method of α + β type titanium alloy | |
| EP2801631B1 (en) | Alpha+beta-type titanium alloy plate for welded pipe, method for producing same, and alpha+beta-type titanium-alloy welded pipe product | |
| EP3266887A1 (en) | Thin titanium sheet and manufacturing method therefor | |
| JP2932918B2 (en) | Manufacturing method of α + β type titanium alloy extruded material | |
| JP5512145B2 (en) | Shape memory alloy | |
| JPH05255827A (en) | Production of alloy based on tial intermetallic compound | |
| CN111621669B (en) | Pipe for 720 MPa-grade high-strength titanium alloy drill rod and manufacturing method thereof | |
| JP3481428B2 (en) | Method for producing Ti-Fe-ON-based high-strength titanium alloy sheet with small in-plane anisotropy | |
| JP2000273598A (en) | Manufacture of high strength coil cold rolled titanium alloy sheet excellent in workability | |
| JP3297011B2 (en) | High strength titanium alloy with excellent cold rollability | |
| WO2022203535A1 (en) | Material for the manufacture of high-strength fasteners and method for producing same | |
| JPH10298682A (en) | Heat resistant alloy, production of heat resistant alloy, and heat resistant alloy parts |
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: 20200707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |