CN113481407A - Preparation method of low-cost anti-detonation titanium alloy plate - Google Patents
Preparation method of low-cost anti-detonation titanium alloy plate Download PDFInfo
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- CN113481407A CN113481407A CN202110771484.XA CN202110771484A CN113481407A CN 113481407 A CN113481407 A CN 113481407A CN 202110771484 A CN202110771484 A CN 202110771484A CN 113481407 A CN113481407 A CN 113481407A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 180
- 238000005474 detonation Methods 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 83
- 239000000956 alloy Substances 0.000 claims abstract description 83
- 239000002994 raw material Substances 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 238000005242 forging Methods 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 238000004381 surface treatment Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 49
- 229910052720 vanadium Inorganic materials 0.000 claims description 37
- 239000010936 titanium Substances 0.000 claims description 36
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 36
- 229910052719 titanium Inorganic materials 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- -1 aluminum-vanadium-iron Chemical compound 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- 239000010703 silicon Substances 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 6
- HIMLGVIQSDVUJQ-UHFFFAOYSA-N aluminum vanadium Chemical compound [Al].[V] HIMLGVIQSDVUJQ-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000010485 coping Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 14
- 230000035939 shock Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract description 5
- 238000005275 alloying Methods 0.000 abstract description 4
- 238000000518 rheometry Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 8
- 244000046052 Phaseolus vulgaris Species 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change 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
- 239000013078 crystal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/028—Slabs
Abstract
The invention discloses a preparation method of a low-cost anti-detonation titanium alloy plate, which comprises the following steps: firstly, designing components of a target product titanium alloy plate; secondly, selecting raw materials for preparing corresponding elements; preparing an electrode, performing vacuum consumable melting twice to obtain a titanium alloy ingot, and then cutting, cogging and forging to obtain a plate blank; fourthly, rolling the plate blank by multiple times to obtain a titanium alloy plate; fifthly, heat treatment; and sixthly, performing surface treatment to obtain the anti-detonation titanium alloy plate. The explosion-proof titanium alloy plate with few components and low alloy element content is designed according to the alloying principle, the component cost is reduced, the surface density is reduced, the strengthening effect is achieved, the toughness and the plasticity of the explosion-proof titanium alloy plate are improved on the premise that the strength of the explosion-proof titanium alloy plate is ensured, the explosion-proof titanium alloy plate can generate uniform plastic rheology and absorb more energy under the attack of shock waves, the shock waves caused by explosion are effectively resisted, and the explosion-proof performance of the explosion-proof titanium alloy plate is improved.
Description
Technical Field
The invention belongs to the technical field of titanium alloy section bar preparation, and particularly relates to a preparation method of a low-cost anti-detonation titanium alloy plate.
Background
The titanium alloy has the characteristics of low density, high specific strength, excellent corrosion resistance and high temperature resistance and the like, is widely applied to the fields of aerospace, chemical engineering, medical treatment, weapons and the like, and is an important structural material. At present, the preparation of titanium alloy mainly aims at component design, processing preparation and heat treatment process, and does not involve the impact, explosion and the like of materials in special use environment. The titanium alloy is used for manufacturing the anti-detonation plate, and has important significance for enhancing the fighting capacity. With the progress of science and technology, modern high-performance anti-detonation materials have developed towards multifunction, high performance, light weight, low cost, safety and the like. By selecting the material composition, the structural design and the production process of the explosion-proof plate and then carrying out theoretical design and performance detection on the basis of experiments, the comprehensive performance optimization is finally realized, and the requirements on functionality and economy are met.
After the explosion happens, the process of explosion shock wave is only within microsecond level, the material is easy to deform and crack due to huge impact kinetic energy, the explosion-proof plate is required to resist the attack of the shock wave, and the peak effect of the impact load is reduced by the large deformation after the impact and the incremental type and the time delay of load transmission.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of a low-cost anti-detonation titanium alloy plate aiming at the defects of the prior art. The method designs the explosion-proof titanium alloy plate with few components and low alloy element content according to the alloying principle, reduces the component cost, plays the roles of reducing the surface density and strengthening, improves the toughness and the plasticity of the explosion-proof titanium alloy plate on the premise of ensuring the strength of the explosion-proof titanium alloy plate, enables the explosion-proof titanium alloy plate to achieve the effects of generating uniform plastic rheology and absorbing more energy under the attack of shock waves, effectively resists the shock waves caused by explosion, slows down the explosion hazard and improves the explosion-proof performance of the explosion-proof titanium alloy plate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preparation method of a low-cost anti-detonation titanium alloy plate is characterized by comprising the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the components of the titanium alloy plate by mass content: 2.5-5% of aluminum, 2-4% of vanadium, 0.5-1.5% of iron, 0.1-0.5% of silicon, less than or equal to 0.25% of oxygen, less than 0.3% of total mass content of other impurity elements, less than 0.1% of mass content of any impurity element, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one; the raw materials corresponding to the titanium element contain titanium and titanium alloy leftover materials or/and titanium alloy residual materials;
step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, performing vacuum consumable melting twice to obtain a titanium alloy ingot, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, and then heating the titanium alloy ingot above the phase transition temperature from an alpha phase to a beta phase to perform cogging forging to obtain a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times to obtain a titanium alloy plate;
step five, heat treatment: carrying out heat treatment on the titanium alloy plate obtained in the fourth step;
step six, surface treatment: and (4) carrying out surface treatment on the titanium alloy plate subjected to heat treatment in the fourth step to obtain the anti-detonation titanium alloy plate.
The invention firstly designs the components of the anti-explosion titanium alloy plate according to the alloying principle, reduces the contents of Al and V on the basis of the original TC4 titanium alloy component, increases trace Fe and Si elements, obtains the titanium alloy plate component with few components and low alloy element content, the solid solution aging strengthening effect is obviously improved by adding the beta stable element, the tensile strength and the high-temperature endurance quality of the alloy are improved by adding Si, and reduces the component cost, effectively reduces the surface density of the anti-explosion titanium alloy plate, plays a role in strengthening, on the premise of ensuring that the anti-detonation titanium alloy plate has certain strength, the toughness and the plasticity of the anti-detonation titanium alloy plate are improved, so that the anti-detonation titanium alloy plate achieves the effects of generating uniform plastic rheology and absorbing more energy under the attack of shock waves, effectively resists the shock waves caused by explosion, slows down the explosion hazard and improves the anti-detonation performance of the anti-detonation titanium alloy plate; meanwhile, the titanium alloy plate has better processing and heat treatment performances, is convenient for the subsequent processing and preparation process, and reduces the preparation cost of the titanium alloy plate; according to the invention, the materials are prepared according to the design components of the titanium alloy plate, the leftover materials or/and the residual materials of the titanium and the titanium alloy are selected as the raw materials of the titanium element, so that the raw material cost of the titanium alloy plate is effectively reduced, and then the titanium alloy plate is sequentially smelted, cogging and forged, rolled, thermally treated and subjected to surface treatment to obtain the anti-detonation titanium alloy plate.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that in the second step, the raw material corresponding to the titanium element contains one or more of titanium and titanium alloy leftover materials, titanium and titanium alloy residual materials and titanium sponge, and the mass of the titanium and titanium alloy leftover materials or/and the titanium and titanium alloy residual materials is 10-15% of the total mass of the raw material; the raw material corresponding to the aluminum element contains one or more than two of aluminum-silicon intermediate alloy, aluminum-vanadium-iron intermediate alloy and aluminum simple substance; the raw material corresponding to the vanadium element contains one or more than two of aluminum-vanadium intermediate alloy, vanadium-iron intermediate alloy and aluminum-vanadium-iron intermediate alloy; the raw material corresponding to the iron element contains one or more than two of vanadium-iron intermediate alloy, aluminum-vanadium-iron intermediate alloy and iron simple substance. The raw materials corresponding to each element in the invention are various, the intermediate alloy of two or three elements is adopted to facilitate the calculation of the ingredients, the difference among the raw materials is reduced, the uniformity of each element in the titanium alloy ingot is improved, and the simple substance ingredient corresponding to one element facilitates the accurate control of the addition of the raw materials.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that in the second step, the titanium and titanium alloy leftover materials and the titanium and titanium alloy residual materials are leftover materials or residual materials generated by processing titanium and titanium alloy bars, plates, pipes and forgings. The sources of the titanium and titanium alloy leftover materials and the titanium and titanium alloy residual materials adopted by the invention are wide, and the leftover materials and the residual materials generated in the preparation process of common titanium and titanium alloy sectional materials can be both used; generally, the titanium and titanium alloy leftover materials and titanium alloy residual materials from the sources need to be cleaned before use, and surface oxide skin and oil stains are removed, so that impurities are prevented from being introduced into the anti-explosion titanium alloy plate.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that the smelting voltage of the two times of vacuum self-consumption smelting in the third step is 18V-40V, and the smelting current is 6 kA-40 kA; the diameter phi of the titanium alloy ingot is 200 mm-2000 mm. Under the optimized smelting current and voltage, the melting speed of the corresponding raw materials of the titanium alloy can be controlled within a reasonable range, so that better surface quality of the titanium alloy ingot can be obtained, and the titanium alloy ingot with small porosity, small component segregation and compact crystal structure can be obtained.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that the heating temperature in the third step is 1000-1200 ℃, the heating time is 2-5 h, and the deformation amount of cogging forging is 60-90%. Under the optimal heating temperature, time and cogging forging deformation, the titanium alloy forging stock with uniform structure is ensured to be obtained.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that in the fourth step, the heating temperature of the multi-fire rolling is 850-950 ℃, the heating time is 0.5-2 h, and the pass deformation of the multi-fire rolling is 60-80%. The deformation resistance of the titanium alloy is preferably lower when the titanium alloy is hot rolled at the phase transition temperature lower than TC4 than when the titanium alloy is cold processed, so that the energy consumption and the cost are obviously reduced under the rolling process; in addition, the hot rolling process breaks coarse grains in a casting state, and the microcracks heal, so that casting defects are effectively reduced or eliminated.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that the heat treatment in the fifth step comprises the following specific processes: cooling the titanium alloy plate after solution treatment, and then cooling the titanium alloy plate after aging treatment; the system of the solution treatment is that the temperature is kept at 850-940 ℃ for 0.5-1 h and then water cooling is carried out, and the system of the aging treatment is that the temperature is kept at 480-550 ℃ for 3-5 h and then air cooling is carried out. The method carries out solid solution-aging treatment at higher temperature and shorter time, so that part of alpha phase in the titanium alloy is converted into beta phase, and the beta phase is not ready to be converted into alpha phase from high-temperature rapid cooling in the water-cooling quenching process, thereby obtaining martensite alpha phase and metastable beta phase; the optimized aging treatment system ensures that the martensite alpha phase and the metastable beta phase are dispersed to separate out a thin strip-shaped alpha phase, and the alpha + beta phase with stable balance is obtained at room temperature after air cooling, so that the titanium alloy is dispersion strengthened and can ensure certain plasticity.
The preparation method of the low-cost anti-detonation titanium alloy plate is characterized in that the surface treatment process in the sixth step is as follows: firstly, removing oxide skin by adopting acid cleaning, and then removing the defects of cracks and pits by adopting coping. The defects generated in the processing and preparation process of the anti-detonation titanium alloy plate are effectively removed through the surface treatment, the surface quality of the titanium alloy plate is improved, and the anti-detonation performance of the titanium alloy plate is further improved.
Compared with the prior art, the invention has the following advantages:
1. the explosion-proof titanium alloy plate with few components and low alloy element content is designed according to the alloying principle, the component cost is reduced, the surface density is reduced, the strengthening effect is achieved, the toughness and the plasticity of the explosion-proof titanium alloy plate are improved on the premise that the strength of the explosion-proof titanium alloy plate is ensured, the explosion-proof titanium alloy plate can generate uniform plastic rheology and absorb more energy under the attack of shock waves, the shock waves caused by explosion are effectively resisted, the explosion hazard is reduced, and the explosion-proof performance of the explosion-proof titanium alloy plate is improved.
2. According to the invention, the raw material containing titanium and titanium alloy leftover materials or/and titanium alloy residual materials are/is selected as the titanium element raw material, so that the raw material cost of the anti-detonation titanium alloy plate is effectively reduced; meanwhile, the explosion-proof titanium alloy plate has good processing and heat treatment performance, is convenient for subsequent processing and preparation processes, and reduces the preparation cost of the explosion-proof titanium alloy plate.
3. The invention adopts the solid solution-aging treatment at higher temperature and shorter time to obtain the alpha + beta phase with stable balance, so that the alloy is dispersion strengthened and certain plasticity can be ensured.
4. The invention adopts the low-cost component design concept, the comprehensive cost of the product anti-detonation titanium alloy plate is controlled to be about 80 percent of that of the traditional national standard TC4 plate, the tensile strength of the anti-detonation titanium alloy plate reaches 980 MPa-1100 MPa, the yield strength reaches 850 MPa-950 MPa, the elongation rate reaches more than 10 percent, and the impact toughness A isKV2The shock wave resistant material can effectively resist the shock wave caused by explosion, is mainly prepared for a protection plate of an armored car, and can also be used for manufacturing an engine top energy cover, a weapon resistance protection cover, a turret pivot frame, an access hatch and the like to replace steel members.
The technical solution of the present invention is further described in detail by examples below.
Detailed Description
Example 1
The embodiment comprises the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the titanium alloy plate with the nominal components of Ti-4Al-2.8V-1Fe-0.1Si-0.1O, wherein the titanium alloy plate comprises the following specific components in percentage by mass: 4% of aluminum, 2.8% of vanadium, 1% of iron, 0.1% of silicon, 0.1% of oxygen, less than 0.3% of other impurity elements in total mass, less than 0.1% of any impurity element in mass, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one, and preparing the raw materials according to 100kg of ingot casting, wherein the specific raw materials and the mass are as follows: 20kg of Ti-6Al-4V residual material, 74kg of sponge titanium, 2kg of aluminum-50 vanadium intermediate alloy, 2kg of iron-50 vanadium intermediate alloy, 0.5kg of aluminum-20 silicon intermediate alloy, 1.4kg of aluminum bean and 0.1kg of titanium dioxide; the Ti-6Al-4V residual material is a material produced by processing a Ti-6Al-4V bar, plate, pipe and forging, and the surface is cleaned before use, so that oxide skin and oil stain are fully removed,
Step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, carrying out vacuum consumable melting twice under the conditions of melting voltage of 18V-25V and melting current of 6 kA-20 kA to obtain a titanium alloy ingot with the diameter phi of 200mm, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, heating the titanium alloy ingot at 1000 ℃ for 5 hours to carry out cogging forging, wherein the deformation of the cogging forging is 60%, and obtaining a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times to obtain a titanium alloy plate with the thickness of 10 mm; the heating temperature of the multi-fire rolling is 850 ℃, the heating time is 2 hours, and the deformation of the multi-fire rolling is 60 percent;
step five, heat treatment: and (3) carrying out heat treatment on the titanium alloy plate obtained in the fourth step, wherein the specific process is as follows: firstly, carrying out solution treatment of keeping the temperature at 850 ℃ for 0.5h and then carrying out water cooling, and then carrying out aging treatment of keeping the temperature at 480 ℃ for 4h and then carrying out air cooling;
step six, surface treatment: and (3) removing oxide skin of the titanium alloy plate subjected to heat treatment in the fourth step by adopting acid washing, and then removing defects of cracks and pits by adopting grinding to obtain the anti-detonation titanium alloy plate.
Through detection, the anti-detonation titanium alloy plate prepared in the embodiment has the tensile strength of 980MPa, the yield strength of 850MPa, the elongation of 18 percent and the impact toughness AKV2Is 60.
In this embodiment, the raw material corresponding to the titanium element may further include one or more of a titanium and Ti-6Al-4V titanium alloy scrap, and a titanium sponge other than the Ti-6Al-4V scrap and the titanium sponge, the raw material corresponding to the aluminum element may further include one or more of an aluminum-silicon intermediate alloy, an aluminum-20 silicon intermediate alloy, and an aluminum bean other than the aluminum-50 vanadium intermediate alloy, the aluminum-20 silicon intermediate alloy, the aluminum-vanadium-iron intermediate alloy, and an aluminum simple substance, the raw material corresponding to the vanadium element may further include one or more of an aluminum-vanadium intermediate alloy, a vanadium-iron intermediate alloy, and an aluminum-vanadium-iron intermediate alloy other than the aluminum-50 vanadium intermediate alloy and the iron-50 vanadium intermediate alloy, the raw material corresponding to the iron element can also be one or more than two of vanadium-iron intermediate alloy, aluminum-vanadium-iron intermediate alloy and iron simple substance except the iron-50 vanadium intermediate alloy.
Example 2
The embodiment comprises the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the titanium alloy plate with the nominal components of Ti-5Al-3V-1Fe-0.4Si-0.2O, wherein the titanium alloy plate comprises the following specific components in percentage by mass: 5% of aluminum, 3% of vanadium, 1% of iron, 0.4% of silicon, 0.2% of oxygen, less than 0.3% of the total mass content of other impurity elements, less than 0.1% of any impurity element, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one, and preparing materials according to 500kg of ingot, wherein the specific raw materials and the mass are as follows: 50kg of Ti-5Al residual material, 404.5kg of sponge titanium, 20kg of aluminum-50 vanadium medium alloy, 10kg of iron-50 vanadium intermediate alloy, 10kg of aluminum-20 silicon intermediate alloy, 4.5kg of aluminum bean and 1kg of titanium dioxide; the Ti-5Al residual material is a material produced by processing a Ti-5Al bar, a plate, a pipe and a forge piece, and the surface of the Ti-5Al residual material is cleaned before use, so that oxide skin and oil stains are fully removed,
Step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, carrying out vacuum consumable melting twice under the conditions of melting voltage of 20-30V and melting current of 10-30 kA to obtain a titanium alloy ingot with the diameter phi of 1000mm, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, heating the titanium alloy ingot at 1200 ℃ for 2 hours to carry out cogging forging, wherein the deformation of the cogging forging is 90%, and obtaining a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times to obtain a titanium alloy plate; the heating temperature of the multi-fire rolling is 950 ℃, the heating time is 0.5h, and the deformation of the multi-fire rolling is 80%;
step five, heat treatment: and (3) carrying out heat treatment on the titanium alloy plate obtained in the fourth step, wherein the specific process is as follows: firstly, carrying out solution treatment of heat preservation at 900 ℃ for 1h and then water cooling, and then carrying out aging treatment of heat preservation at 520 ℃ for 4h and then air cooling;
step six, surface treatment: and (3) removing oxide skin of the titanium alloy plate subjected to heat treatment in the fourth step by adopting acid washing, and then removing defects of cracks and pits by adopting grinding to obtain the anti-detonation titanium alloy plate.
Through detection, the anti-detonation titanium alloy plate prepared in the embodiment has the tensile strength of 1000MPa, the yield strength of 900MPa, the elongation of 14 percent and the impact toughness AKV2Is 64.
In this embodiment, the raw material corresponding to the titanium element may further include one or more of a titanium and Ti-5Al titanium alloy scrap, and a titanium sponge other than the Ti-5Al scrap and the titanium sponge, the raw material corresponding to the aluminum element may further include one or more of an aluminum-silicon intermediate alloy, an aluminum-vanadium-iron intermediate alloy, and an aluminum simple substance other than the aluminum-50 vanadium intermediate alloy, the aluminum-20 silicon intermediate alloy, and the aluminum bean, the raw material corresponding to the vanadium element may further include one or more of an aluminum-vanadium intermediate alloy, a vanadium-iron intermediate alloy, and an aluminum-vanadium-iron intermediate alloy other than the aluminum-50 vanadium intermediate alloy and the iron-50 vanadium intermediate alloy, and the raw material corresponding to the iron element may further include one or more of a vanadium-iron intermediate alloy other than the iron-50 vanadium intermediate alloy, One or more than two of aluminum-vanadium-iron intermediate alloy and iron simple substance.
Example 3
The embodiment comprises the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the titanium alloy plate with the nominal components of Ti-3Al-2V-1.5Fe-0.5Si-0.1O, wherein the titanium alloy plate comprises the following specific components in percentage by mass: 3% of aluminum, 2% of vanadium, 1.5% of iron, 0.5% of silicon, 0.1% of oxygen, less than 0.3% of other impurity elements in total mass, less than 0.1% of any impurity element in mass, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one, and preparing materials according to 1000kg of ingot, wherein the specific raw materials and the mass are as follows: 200kg of Ti-2Al-2V residual material, 737kg of sponge titanium, 2kg of aluminum-50 vanadium medium alloy, 30kg of iron-50 vanadium intermediate alloy, 25kg of aluminum-20 silicon intermediate alloy, 5kg of aluminum bean and 1kg of titanium dioxide; the Ti-2Al-2V residual material is a material produced by processing a bar, a plate, a pipe and a forge piece of Ti-2Al-2V, and the surface is cleaned before use, so that oxide skin and oil stain are fully removed,
Step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, carrying out vacuum consumable melting twice under the conditions of melting voltage of 33V-40V and melting current of 28 kA-40 kA to obtain a titanium alloy ingot with the diameter phi of 2000mm, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, heating the titanium alloy ingot at 1100 ℃ for 4 hours to carry out cogging forging, wherein the deformation of the cogging forging is 80%, and obtaining a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times to obtain a titanium alloy plate; the heating temperature of the multi-fire rolling is 950 ℃, the heating time is 1h, and the deformation of the multi-fire rolling is 80%;
step five, heat treatment: and (3) carrying out heat treatment on the titanium alloy plate obtained in the fourth step, wherein the specific process is as follows: firstly, carrying out solution treatment of water cooling after heat preservation at 940 ℃ for 0.5h, and then carrying out aging treatment of air cooling after heat preservation at 550 ℃ for 3 h;
step six, surface treatment: and (3) removing oxide skin of the titanium alloy plate subjected to heat treatment in the fourth step by adopting acid washing, and then removing defects of cracks and pits by adopting grinding to obtain the anti-detonation titanium alloy plate.
Through detection, the anti-detonation titanium alloy plate prepared in the embodiment has the tensile strength of 1100MPa, the yield strength of 950MPa, the elongation of 12 percent and the impact toughness AKV2Is 65.
In this embodiment, the raw material corresponding to the titanium element may further include one or more of a titanium and Ti-2Al-2V titanium alloy scrap, and a titanium sponge other than the Ti-2Al-2V scrap and the titanium sponge, the raw material corresponding to the aluminum element may further include one or more of an aluminum-silicon intermediate alloy, an aluminum-20 silicon intermediate alloy, and an aluminum bean other than the aluminum-50 vanadium intermediate alloy, the aluminum-20 silicon intermediate alloy, the aluminum-vanadium-iron intermediate alloy, and an aluminum simple substance, the raw material corresponding to the vanadium element may further include one or more of an aluminum-vanadium intermediate alloy, a vanadium-iron intermediate alloy, and an aluminum-vanadium-iron intermediate alloy other than the aluminum-50 vanadium intermediate alloy and the iron-50 vanadium intermediate alloy, the raw material corresponding to the iron element can also be one or more than two of vanadium-iron intermediate alloy, aluminum-vanadium-iron intermediate alloy and iron simple substance except the iron-50 vanadium intermediate alloy.
Example 4
The embodiment comprises the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the titanium alloy plate with the nominal components of Ti-2.5Al-4V-0.5Fe-0.1Si-0.25O, wherein the titanium alloy plate comprises the following specific components in percentage by mass: 2.5% of aluminum, 4% of vanadium, 0.5% of iron, 0.1% of silicon, 0.25% of oxygen, less than 0.3% of other impurity elements in total mass, less than 0.1% of any impurity element in mass, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one, and preparing the raw materials according to 100kg of ingot casting, wherein the specific raw materials and the mass are as follows: 50kg of Ti-3Al residual material, 42.65kg of sponge titanium, 4kg of aluminum-50 vanadium intermediate alloy, 2.5kg of iron-80 vanadium intermediate alloy, 0.5kg of aluminum-20 silicon intermediate alloy, 0.1kg of aluminum bean and 0.25kg of titanium dioxide; the Ti-3Al residual material is a material produced by processing a Ti-3Al bar, a plate, a pipe and a forge piece, and the surface is cleaned before use, so that oxide skin and oil stains are removed fully,
Step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, carrying out vacuum consumable melting twice under the conditions of melting voltage of 30-35V and melting current of 25-30 kA to obtain a titanium alloy ingot with the diameter phi of 200mm, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, heating the titanium alloy ingot at 1000 ℃ for 5 hours to carry out cogging forging, wherein the deformation of the cogging forging is 70%, and obtaining a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times, wherein the heating temperature of the multiple times of rolling is 900 ℃, the heating time is 1h, and the deformation of the multiple times of rolling is 80%;
step five, heat treatment: and (3) carrying out heat treatment on the titanium alloy plate obtained in the fourth step, wherein the specific process is as follows: firstly, carrying out solution treatment of keeping the temperature at 920 ℃ for 1h and then carrying out water cooling, and then carrying out aging treatment of keeping the temperature at 500 ℃ for 5h and then carrying out air cooling;
step six, surface treatment: and (3) removing oxide skin of the titanium alloy plate subjected to heat treatment in the fourth step by adopting acid washing, and then removing defects of cracks and pits by adopting grinding to obtain the anti-detonation titanium alloy plate.
The anti-detonation titanium alloy plate prepared in the embodiment has the tensile strength of 1050MPa, the yield strength of 920MPa, the elongation of 12 percent and the impact toughness AKV2Is 62.
In this embodiment, the raw material corresponding to the titanium element may further include one or more of a titanium and Ti-3Al titanium alloy scrap, and a titanium sponge other than the Ti-3Al scrap and the titanium sponge, the raw material corresponding to the aluminum element may further include one or more of an aluminum-silicon intermediate alloy, an aluminum-vanadium-iron intermediate alloy, and an aluminum simple substance other than the aluminum-50 vanadium intermediate alloy, the aluminum-20 silicon intermediate alloy, and the aluminum bean, the raw material corresponding to the vanadium element may further include one or more of an aluminum-vanadium intermediate alloy, a vanadium-iron intermediate alloy, and an aluminum-vanadium-iron intermediate alloy other than the aluminum-50 vanadium intermediate alloy and the iron-80 vanadium intermediate alloy, and the raw material corresponding to the iron element may further include one or more of a vanadium-iron intermediate alloy other than the iron-80 vanadium intermediate alloy, One or more than two of aluminum-vanadium-iron intermediate alloy and iron simple substance.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (8)
1. A preparation method of a low-cost anti-detonation titanium alloy plate is characterized by comprising the following steps:
step one, designing components: designing the components of a target product titanium alloy plate to obtain the components of the titanium alloy plate by mass content: 2.5-5% of aluminum, 2-4% of vanadium, 0.5-1.5% of iron, 0.1-0.5% of silicon, less than or equal to 0.25% of oxygen, less than 0.3% of total mass content of other impurity elements, less than 0.1% of mass content of any impurity element, and the balance of titanium;
step two, batching: selecting raw materials for preparing corresponding elements according to the mass content composition of the titanium alloy plate obtained in the step one; the raw materials corresponding to the titanium element contain titanium and titanium alloy leftover materials or/and titanium alloy residual materials;
step three, smelting and cogging forging: preparing the raw materials of the corresponding elements selected in the step two into electrodes, placing the electrodes in a vacuum consumable furnace, performing vacuum consumable melting twice to obtain a titanium alloy ingot, cutting the titanium alloy ingot by a lathe to remove a surface skin and a riser, and then heating the titanium alloy ingot above the phase transition temperature from an alpha phase to a beta phase to perform cogging forging to obtain a plate blank;
step four, rolling: rolling the plate blank obtained in the third step by multiple times to obtain a titanium alloy plate;
step five, heat treatment: carrying out heat treatment on the titanium alloy plate obtained in the fourth step;
step six, surface treatment: and (4) carrying out surface treatment on the titanium alloy plate subjected to heat treatment in the fourth step to obtain the anti-detonation titanium alloy plate.
2. The method for preparing the low-cost anti-detonation titanium alloy plate according to claim 1, wherein the raw material corresponding to the titanium element in the second step contains one or more of titanium and titanium alloy scraps, titanium and titanium alloy scraps and titanium sponge, and the mass of the titanium and titanium alloy scraps or/and the titanium and titanium alloy scraps is 10-15% of the total mass of the raw material; the raw material corresponding to the aluminum element contains one or more than two of aluminum-silicon intermediate alloy, aluminum-vanadium-iron intermediate alloy and aluminum simple substance; the raw material corresponding to the vanadium element contains one or more than two of aluminum-vanadium intermediate alloy, vanadium-iron intermediate alloy and aluminum-vanadium-iron intermediate alloy; the raw material corresponding to the iron element contains one or more than two of vanadium-iron intermediate alloy, aluminum-vanadium-iron intermediate alloy and iron simple substance.
3. The method for preparing the low-cost anti-detonation titanium alloy plate as claimed in claim 1, wherein in the second step, the titanium and titanium alloy leftover materials and the titanium and titanium alloy residual materials are leftover materials or residual materials generated by processing of bars, plates, pipes and forgings of titanium and titanium alloy.
4. The preparation method of the low-cost anti-detonation titanium alloy plate according to claim 1, wherein in the third step, the smelting voltage of the two times of vacuum self-consumption smelting is 18V-40V, and the smelting current is 6 kA-40 kA; the diameter phi of the titanium alloy ingot is 200 mm-2000 mm.
5. The method for preparing a low-cost anti-detonation titanium alloy plate according to claim 1, wherein the heating temperature in the third step is 1000-1200 ℃, the heating time is 2-5 h, and the deformation amount of cogging forging is 60-90%.
6. The method for preparing the low-cost anti-detonation titanium alloy plate according to claim 1, wherein the heating temperature of the multi-fire rolling in the fourth step is 850-950 ℃, the heating time is 0.5-2 h, and the pass deformation of the multi-fire rolling is 60-80%.
7. The method for preparing the low-cost anti-detonation titanium alloy plate according to claim 1, wherein the specific process of the heat treatment in the fifth step is as follows: cooling the titanium alloy plate after solution treatment, and then cooling the titanium alloy plate after aging treatment; the system of the solution treatment is that the temperature is kept at 850-940 ℃ for 0.5-1 h and then water cooling is carried out, and the system of the aging treatment is that the temperature is kept at 480-550 ℃ for 3-5 h and then air cooling is carried out.
8. The method for preparing a low-cost anti-detonation titanium alloy plate according to claim 1, wherein the surface treatment process in the sixth step is as follows: firstly, removing oxide skin by adopting acid cleaning, and then removing the defects of cracks and pits by adopting coping.
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| CN116855863A (en) * | 2023-09-05 | 2023-10-10 | 北京科技大学 | Tissue regulation and control method for detonation fracture inhibition of titanium alloy liner |
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| CN117400603A (en) * | 2023-12-13 | 2024-01-16 | 内蒙金属材料研究所 | High-speed impact resistant laminated titanium alloy plate and preparation method thereof |
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