69 results about "Double phase" patented technology

The invention discloses a double-phase high-temperature damping alloy material as well as a manufacturing method and application thereof. The main components of an alloy comprise manganese, copper, nickel, iron, zinc, aluminum and chromium. The preparation method of the high-temperature manganese-based damping alloy material comprises the steps of mother alloy cast ingot preparation, alloy processing and alloy aftertreatment. According to the high-temperature manganese-based damping alloy, the mixing entropy is larger than 1.5 R, and the valence electron concentration is 5.9 < = VEClt; compared with a single-phase fcc structure in the prior art, the high-entropy manganese-based alloy has the advantages that the high-entropy manganese-based alloy is of an fcc and bcc double-phase structure, the interfacial effect caused by double phases can be brought into full play, and the damping performance of the alloy at the high temperature is effectively improved, so that the high-entropy manganese-based alloy has stable high damping performance within the high-temperature range of 400-800 DEG C; the method can be applied to vibration noise control under high-temperature and oxidation environment conditions. The damping alloy is simple in manufacturing process and low in manufacturing cost.

The invention belongs to the technical field of surface treatment, and discloses an acid pickling process for an alpha layer on the surface of a biphase titanium alloy forge piece, and the used acid pickling solution comprises 100-130 g / L of HNO3 with the concentration of 65-68%, 35-55 g / L of HF with the concentration of 40%, and the balance of water. The pickling solution with the proportion shows a stable rate of removing the alpha layer of the forge piece under the constant temperature condition of 20-50 DEG C, and the rate is about 0.01 mm / min. In order to ensure that no alpha layer residue exists on the surface of the forge piece and avoid excessive pickling, the thickness of the oxygen-enriched alpha layer on the surface of the forge piece is detected through a metallographic method, the thickness is increased by 0.03 mm-0. 08mm on the basis of the detected maximum value of the thickness of the alpha layer and set as the pickling amount, the pickling time is calculated according to the pickling rate, and the oxygen-enriched alpha layer on the surface of the double-phase titanium alloy forge piece is accurately removed. The process can be realized by only one pickling solution, the pickling time is determined according to the pickling amount, the imagination of incomplete pickling or excessive pickling is avoided, the production process is effectively simplified, and the period is shortened.

The invention provides a dual-phase stainless steel plate with excellent low-temperature fracture toughness for a polar ship and a manufacturing method thereof. The steel plate comprises the following components in percentage by weight: 0.001%-0.01% of C, 0.2%-0.5% of Si, 0.5%-1.5% of Mn, less than or equal to 0.02% of P, less than or equal to 0.002% of S, 21%-22% of Cr, 7%-9% of Ni, 2%-3% of Mo, 0.1%-0.3% of N, 2%-3% of Cu, 0.0055%-0.0095% of La and 0.0045%-0.0085% of Ce. And the balance of iron and inevitable impurities. The manufacturing method comprises the steps of smelting, rolling and solid solution. The yield strength of the steel plate produced through the method is larger than or equal to 605 MPa, and the tensile strength is larger than or equal to 812 MPa; the impact energy at-80 DEG C is greater than or equal to 180J, the impact energy at-100 DEG C is greater than or equal to 142J, the nil-plasticity transition temperature NDTT is less than or equal to-70 DEG C, the low-temperature elongation at-40 DEG C is greater than or equal to 35%, the Z-direction performance is greater than or equal to 63%, and the CTOD at-20 DEG C,-40 DEG C and-60 DEG C of low-temperature fracture of a base material and a heat affected zone is greater than 0.2

The invention discloses a design and preparation method of a double-phase titanium alloy, and belongs to the field of titanium alloy materials and powder metallurgy. The double-phase titanium alloy comprises the following components: less than or equal to 0.012% of C, less than or equal to 0.015% of H, less than or equal to 0.06% of N, 0.50-0.70% of O and the balance of Ti and inevitable impurities. According to the method, an HCP-FCC double-phase titanium alloy forming part is obtained by utilizing high-oxygen titanium alloy powder and combining with a laser powder bed fusion (PBF-LB / M) technology for forming, wherein the volume fraction of an FCC phase is gt; the density of the finally obtained double-phase titanium alloy reaches 99.8% or above, the tensile strength is larger than or equal to 1100 MPa, the yield strength is larger than or equal to 1000 MPa, and the ductility is larger than or equal to 20.0%. According to the double-phase titanium alloy, a certain amount of nano FCC phase is induced to be formed through interstitial oxygen solid solution elements, the nano FCC phase and an HCP matrix have a coherent relationship, the Ti-O alloy can be effectively strengthened through the HCP-FCC double-phase structure, and the excellent plasticity is kept. The double-phase titanium alloy is excellent in mechanical property and does not depend on solid solution strengthening, second-phase dispersion strengthening or work hardening ways of expensive rare metals such as V, Mo and Nb, and green, low-carbon and low-cost preparation of the titanium alloy is facilitated.

The invention discloses an impact resistance evaluation method and device for a double-phase structure. The method comprises the following steps: obtaining a performance index set of the double-phase structure; the performance index set comprises a plurality of performance index subsets; each performance index subset comprises acquisition sequence values of a plurality of parameters; utilizing the performance index set to construct an anti-impact index numerical matrix; and carrying out comprehensive evaluation processing on the impact resistance index numerical value matrix to obtain an impact resistance evaluation value. According to the method, the problem that the impact resistance of the material in practical application is difficult to accurately predict due to the fact that existing evaluation methods mostly depend on empirical formulas or qualitative analysis is solved.

There is provided a pixel transform method for JPEG / MPEG compression of double phase-amplitude coded holograms. According to an embodiment, a hologram compression method transforms a hologram represented by a complex number into a hologram represented only by a phase, rearranges pixels of the transformed hologram, and compresses the rearranged hologram. Pixels of a DPAC hologram are rearranged before the DPAC hologram is compressed in a standardized image / video compression technique, so that a high frequency component is prevented from occurring when a hologram is compressed. Accordingly, hologram quality degradation occurring when a DPAC hologram is used in a standardized image / video compression technique can be prevented.

The invention provides dual-phase steel, a preparation method of the dual-phase steel and a vehicle applying the dual-phase steel. The dual-phase steel comprises the following element components in percentage by mass: 0.07 to 0.10 percent of C, 0.6 to 0.8 percent of Si, 1.8 to 2.1 percent of Mn, 0.018 to 0.022 percent of Cr, 0.015 to 0.025 percent of Ti, 0.02 to 0.05 percent of Al and the balance of Fe and inevitable impurities. One component of the dual-phase steel can achieve different strength grades, the tensile strength of the dual-phase steel covers the strength grade range of 590-1180 MPa, the strength requirements of all parts of a body-in-white can be met, the carbon equivalent and the cost of the dual-phase steel are low, the weldability and the welding quality between body-in-white plate combinations can be improved, the body-in-white production process is simplified, and the production efficiency is improved.

The invention relates to a heat treatment method of a double-phase titanium alloy, the double-phase titanium alloy and a titanium alloy product. The heat treatment method of the double-phase titanium alloy comprises the following steps that a double-phase titanium alloy workpiece is subjected to first annealing treatment, so that the core temperature of the double-phase titanium alloy workpiece reaches 20-60 DEG C below the beta-phase transformation temperature; the double-phase titanium alloy workpiece subjected to first annealing treatment is cooled to 70-250 DEG C below the beta-phase transformation temperature along with the furnace at the cooling speed of 1-5 DEG C / min; and the cooled biphase titanium alloy workpiece is subjected to second annealing treatment. According to the heat treatment method for the double-phase titanium alloy, all the steps interact, the double-state structure uniformity of the double-phase titanium alloy can be effectively improved, and then the comprehensive performance such as the strength, plasticity and toughness of the double-phase titanium alloy is improved.

According to the technical scheme, the electromechanical spindle comprises a shaft sleeve, the shaft sleeve is of a cylindrical hollow structure, openings are formed in the two ends of the shaft sleeve, the openings in the two ends of the shaft sleeve are fixedly connected with front covers through bolts, the front covers are of an annular structure, and one side of the plane of each front cover is fixedly connected with the shaft sleeve; a first bearing sleeve is installed on the arc-shaped face of the inner side of the shaft sleeve through a bolt, the first bearing sleeve is of an annular structure, the arc-shaped face of the outer side of the first bearing sleeve is of a bent structure, and the arc-shaped face of the outer side of the first bearing sleeve is connected with the front cover in a clamped mode. And the second bearing is of an annular structure, a supporting sleeve and a second bearing sleeve are installed on the inner side of the second bearing, and the first main shaft is supported through combination of the supporting sleeve and the second bearing sleeve.

The invention provides an alpha / beta two-phase respective strengthening-based ultrahigh-strength double-phase titanium alloy component design method, and belongs to the technical field of titanium alloys. The method comprises the following steps: firstly, obtaining an alpha / beta single-phase component in a certain high-strength double-phase titanium alloy (such as Ti-5Al-5Mo-5V-3Cr); and then component optimization is conducted on the alpha phase and the beta phase through a diffusion multi-element knot method, the change rule of the single-phase strength along with the alloy element content is obtained, and the component range of the single-phase strength at the high level is obtained. Based on the component range of the single-phase strength at a high level and the two-phase proportion range, the component range of the whole alloy is preliminarily obtained. A phase diagram is used for calculating alpha / beta single-phase components under different overall components, and it is ensured that the single-phase components are located in the component range when the single-phase strength is at the high level, so that the components are preliminarily screened. And then, according to the preliminary screening result, optimizing and determining the overall component by using a diffusion multi-element knot method. By means of the method, the new alloy with the comprehensive mechanical property obviously improved can be designed.

The invention discloses a double-phase single-feed type connecting shaft tightness real-time early warning system and an installation and use method, belongs to the technical field of pumped storage power generation motors, and aims to overcome the defects of power generator shaft flange and water turbine shaft flange connecting shaft tightness monitoring of an existing pumped storage power generation motor set. The system is composed of an output module, a receiving module, a first locking bolt and a second locking bolt, the output module is matched with a motor shaft flange, the receiving module is matched with a water wheel shaft flange, and the output module and the receiving module form a laser feedback mechanism. The fitting degree of the flange face is quantified in real time through the horizontal dislocation algorithm model and the gap loosening algorithm model, so that the connecting shaft tightness is reversely deduced, the loosening degree of the connecting shaft bolt is accurately judged, and the method has the advantages of being high in precision, rapid in response, capable of giving an early warning in advance, capable of running for a long period without maintenance and the like.

The embodiment of the invention provides a working frequency adjustment method based on double phase-locked loops, a processor and electronic equipment, and relates to the field of integrated circuits. The working frequency adjusting method of the double phase-locked loops is used for adjusting the working frequency of a processor, the processor comprises a first phase-locked loop and a second phase-locked loop, and the working frequency adjusting method of the double phase-locked loops comprises the following steps: receiving an adjusting instruction for adjusting the working frequency of the processor; under the condition that the first phase-locked loop provides a clock signal for the processor, adjusting the second phase-locked loop based on the adjustment instruction; the first phase-locked loop is a current clock source of the processor; and after the second phase-locked loop is adjusted, switching the clock source of the processor from the first phase-locked loop to the second phase-locked loop. The method is helpful for reducing abnormal conditions occurring in the process of adjusting the working frequency of the processor.

The invention relates to the technical field of titanium alloy detection, in particular to a method for detecting the content of each component phase of a double-phase titanium alloy, which comprises the following steps: S1, sampling: cutting a titanium alloy sample; s2, mechanical polishing treatment: carrying out mechanical grinding and polishing on the analysis surface of the sample, and cleaning; s3, electrolytic polishing: carrying out electrolytic polishing on the sample; s4, the polished sample is observed under an optical metallographic microscope, and the surface of the sample should be smooth, flat, free of scratches and free of burns; if the scratches or burns occur, the step S2 to the step S4 are repeated; and S5, adjusting parameters of the scanning electron microscope and the EBSD probe, and detecting the sample to obtain the specific contents of the alpha phase and the beta phase in the detection area. The method provided by the invention has the advantages of high detection efficiency and high measurement precision, and can completely eliminate the influence of human factors.

The invention discloses a double-phase magnetic flux guide rail coupling system, an inverter circuit, a position detection method and a magnetic field control method. The system comprises an energy transmitting end and an energy receiving end, the energy transmitting end comprises multiple groups of first magnetic core coil devices which are connected in the extension direction, and each first magnetic core coil device comprises a first magnetic core and a first coil; in two adjacent groups of first magnetic core coil devices, two groups of first magnetic cores are directly connected, the current amplitudes are different, and the distances are equal; and in the two groups of first magnetic core coil devices which are closest to each other and have the same current amplitude, the winding directions of the first coils are opposite. According to the system, two-phase decoupling can be realized, the modeling difficulty of a magnetic circuit is reduced, the utilization rate of a magnetic field is improved, a two-phase driving mode in which two-phase output is completely independent can be realized, and finally wireless power transmission in the advancing process is realized. In addition, the position information of the vehicle can be detected, meanwhile, the output fluctuation of the voltage can be reduced by controlling the magnetic field, and the system stability and the energy utilization efficiency are improved.

The invention is applicable to the technical field of metal material welding, and provides a duplex stainless steel pipe welding method which comprises the following steps: S1, performing transient eutectic liquid phase diffusion pretreatment on a groove, and forming a nanocrystalline composite activation layer rich in nickel, nitrogen and rare earth oxides in the groove in situ; s2, a microalloyed welding wire with specific components is adopted for welding, and the welding wire contains 0.8 wt%-1.5 wt% of Cu and 0.01 wt%-0.03 wt% of P which are cooperatively added; s3, after welding, interface excitation and high-temperature and high-pressure nitrogen directional penetration cooperative treatment is conducted; the pretreated nanocrystalline composite activation layer and Cu and P in the welding wire are subjected to a synergistic metallurgical reaction during welding, Ni-Cu-P clusters are generated, the phase boundary can be pinned, the structure can be refined, and a welding seam can be purified in situ; meanwhile, the nanocrystalline composite activation layer provides a high-speed channel for subsequent directional permeation of nitrogen atoms, so that a nitrogen-rich strengthening region is formed on the inner wall of the joint; according to the method, the weak area of the fusion line is fundamentally eliminated, homogenization and functional gradient of the joint structure performance are achieved, and the comprehensive performance is improved.

The invention belongs to the technical field of high-entropy alloys, and discloses a Laves phase enhanced wear-resistant high-entropy alloy and a preparation method thereof. The wear-resistant high-entropy alloy is prepared from the following element components in percentage by atomic mass: 23% to 23.375% of Fe, 23% to 23.375% of Co, 23% to 23.375% of Ni, 23% to 23.375% of V and 6.5% to 8% of Hf, and the total percentage is 100%. The organization structure of the wear-resistant high-entropy alloy is a face-centered cubic structure FCC phase and Laves phase coexisting double-phase structure. The wear-resistant high-entropy alloy prepared by the invention is uniform in component distribution and relatively high in density; the wear-resistant high-entropy alloy has a eutectic structure in which an FCC phase and a Laves phase coexist, so that the wear-resistant high-entropy alloy prepared by the preparation method has relatively low friction coefficient and grinding crack width and good friction and wear properties.

The utility model discloses a dual phase splitter for producing dichlorotoluene, which relates to the technical field of chemical equipment and comprises a dual phase splitter and a sliding device, the sliding device comprises a circular ring, a connecting rod, a sliding rod, an electric telescopic rod and a connecting rod, the circular ring used for scraping liquid is slidably connected into the dual-phase splitter, the connecting rod is fixedly connected to the inner wall of the circular ring, the sliding rod is slidably connected into the dual-phase splitter, and the sliding rod fixedly sleeves the surface of the connecting rod; an electric telescopic rod is fixedly installed at the bottom of the double phase splitter, the output end of the electric telescopic rod is fixedly connected with a connecting rod, a sliding rod slides front and back and drives a circular ring to slide front and back through the connecting rod to scrape liquid attached to the inner wall of the double phase splitter, and then liquid particles are gathered together; after the liquid particles are gathered, the gravity is increased, so that the liquid particles can automatically flow downwards and are finally discharged to the outside through the liquid discharge pipe, and the liquid is prevented from being attached to the inner wall of the double-phase splitter.

The invention relates to the technical field of titanium alloy machining, in particular to a large-diameter TA15 bar forging method and a large-diameter TA15 bar. The forging method comprises the steps that S1, a TA15 cast ingot is subjected to cogging forging, and a primary forging stock is obtained; s2, phase change point testing is conducted on the primary forging stock, and the phase change point temperature T beta is obtained; s3, the primary forging stock is subjected to single-phase region forging, a single-phase region forging stock is obtained, and single-phase region forging is variable-parameter forging; s4, the single-phase region forging blank is subjected to double-phase region forging, a double-phase region forging blank is obtained, and double-phase region forging is constant-parameter forging; and S5, finished product forging is conducted on the biphase region forging blank, drawing-out and rounding are conducted, and the large-diameter TA15 bar is obtained. According to the forging method, through single-phase region progressive decrease type deformation forging and two-phase region constant parameter forging, full refining of crystal grains is achieved, and the problem that in a conventional forging method, mechanical property anisotropy is obvious is solved.

The invention provides a mine cross-season energy storage system and a control method based on coordination of double phase change materials, and the energy storage system comprises a heat exchanger group, a liquid collector, a liquid separator, a surface air cooler group, and a phase change material filling body group with a phase change filling body, the phase change filling body can be filled with a first phase change material with low-temperature phase change and a second phase change material with high-temperature phase change in a layered mode, and the first phase change material and / or the second phase change material can be controlled to participate in heat exchange according to needs. Therefore, efficient integration of differentiation temperature control optimization of the mining working face and wellhead anti-freezing functions is achieved, intelligent control and effective adjustment of the system in cold / heat collection, storage and utilization are effectively ensured through gradient temperature control logic, and finally deep coupling of goaf treatment and clean energy supply is achieved.

The invention discloses a laser cladding double-phase high-entropy alloy coating and a preparation method thereof, and belongs to the technical field of laser surface modification. The laser cladding double-phase high-entropy alloy coating is prepared from the following raw materials in atomic percent: 9 to 16 percent of Al, 11 to 17 percent of Cr, 11 to 18 percent of Fe, 13 to 20 percent of Ti, 10 to 15 percent of V and 28 to 33 percent of Ni. The laser cladding double-phase high-entropy alloy coating is good in high-temperature oxidation resistance and abrasion resistance and can be matched with thermophysical parameters of a TC4 titanium alloy base material, a cladding layer is free of obvious defects and forms metallurgical bonding with the base material, the service life of the TC4 titanium alloy can be prolonged, the application scene of the TC4 titanium alloy in the extreme working condition environment is widened, and the application prospect is wide. And development resources of the TC4 titanium alloy are greatly saved.

The invention belongs to the field of titanium alloy thermal deformation structure control, and relates to a preparation method of a high-comprehensive-performance double-phase double-lath structure Ti2AlNb alloy component, which comprises the following implementation steps of: 1, measuring a key phase transformation point of a Ti2AlNb alloy; 2, step heating of the blank for component preparation; and 3, carrying out single-phase region thermal deformation on the blank B2. 4, performing primary heat treatment on the blank; and 5, carrying out secondary heat treatment on the blank. According to the method provided by the invention, the Ti2AlNb alloy component with the B2 + OI + OII double-phase double-lath structure can be prepared. Through accurate measurement of a phase change temperature interval, stepped heating, B2 single-phase region thermal deformation and double thermal treatment of a B2 + O phase region, effective control over the variety, morphology and proportion of B2 crystal grains and precipitated phases is achieved, and a microscopic structure with the O phases of large and small braided laths distributed on a small original B2 crystal grain matrix is prepared. The member with the structure has excellent strength, plasticity and thermal stability.

The utility model belongs to the field of end sockets, particularly relates to a double-phase high-alloy steel end socket convenient to install, and aims to solve the problems that an existing end socket is fixed through a limiting nut and a threaded rod during installation, and the limiting nut and the threaded rod are inconvenient to fence and protect after being installed, so that the end socket is inconvenient to install after being used outside for a long time. In order to solve the problems that due to the fact that a limiting nut and a threaded rod are prone to rusting, an end socket is difficult to disassemble, and the applicability is reduced, the following scheme is provided that the device comprises a protection mechanism, and the protection mechanism is arranged on a flange ring and used for carrying out fence protection on an installation bolt; and the shielding mechanism is arranged on the flange ring and used for shielding and protecting the connector of the flange ring. When the sealing head is used, the protection effect on the mounting bolt is facilitated, the phenomenon that the mounting bolt is easy to rust after the sealing head is used for a long time outside is prevented, the purpose of conveniently disassembling the sealing head body is further achieved, and the applicability is improved.

The invention discloses a parameter optimization method for an anti-impact double-phase structure. The method comprises the steps of obtaining a to-be-optimized parameter index numerical value set and an anti-impact double-phase structure performance test result set; the to-be-optimized parameter index numerical value set comprises a plurality of to-be-optimized parameter index numerical values; the impact-resistant biphase structure performance test result set comprises a performance test result under each to-be-optimized parameter index value; performing modeling processing on the to-be-optimized parameter index value set and the impact-resistant biphase structure performance test result set to obtain a multi-index optimization model; and performing calculation processing on parameter indexes to be optimized by utilizing the multi-index optimization model to obtain an optimal index set. According to the method, the accurate construction of the performance index function is realized, the overall optimization of the multi-type parameters of the biphase structure is realized based on the function set, and finally the optimization of the performance of the biphase structure is realized.

Disclosed in the present invention is dual-phase steel, comprising, in addition to 90% or more of Fe and inevitable impurities, the following components in percentages by mass: C: 0.09-0.11%, Si: 0.1-0.3%, Mn: 1.4-1.6%, Al: 0.01-0.03%, Nb: 0.01-0.03%, Ti: 0.01-0.03%, and B: 0.0020-0.0030%. In the present invention, by rationally controlling the chemical components of steel, dual-phase steel with both low cost and high mechanical properties is obtained. Further disclosed in the present invention is a manufacturing method for the dual-phase steel.

The present application provides a method and system for locating a voltage sag disturbance source and identifying a disturbance cause. The method for locating a voltage sag disturbance source and identifying a disturbance cause comprises: collecting an input signal, wherein the input signal comprises five voltage data based on normal operation, single-phase grounding, two-phase grounding, three-phase grounding and two-phase short circuit; denoising the input signal based on a soft threshold wavelet transform, and obtaining a denoised signal; extracting features of the denoised signal by serially combining a CNN and an attention mechanism; inputting the extracted features into an attention mechanism module for adaptive weighting; inputting the feature extraction results into two fully connected layers for classification, and obtaining classification results, wherein the classification results comprise normal operation, single-phase grounding, two-phase grounding, three-phase grounding and two-phase short circuit, so as to solve the technical problem that the power system cannot identify and diagnose the voltage sag source in complex scenarios.

The invention relates to the technical field of high-temperature alloy heat treatment, in particular to a method for presetting residual stress of a high-temperature alloy disc annular part. The method for presetting the residual stress of the high-temperature alloy disc annular part comprises the following steps that the surface of a non-inner-hole area of the high-temperature alloy disc annular part is subjected to coating treatment, and a pretreated part is obtained; solid solution heat treatment is conducted on the pretreated part, then first forced cooling is conducted on the inner hole area, a cooling medium is a single-phase medium or a double-phase medium, and a first treated part is obtained; and aging heat treatment is conducted on the first treatment piece, then second forced cooling is conducted on the inner hole area, and the cooling medium is a single-phase medium or a double-phase medium. According to the method, the distribution characteristics of an internal temperature field of the high-temperature alloy disc ring-shaped part are effectively changed by regulating and controlling the heat exchange coefficients of different positions of the high-temperature alloy disc ring-shaped part in the cooling process and the differentiated design of local cooling behaviors, so that a target residual stress distribution form is formed; and the reliability, the structural stability and the service life of the high-temperature alloy disc annular part in the service process are improved.

The invention belongs to the technical field of titanium alloy materials, and particularly relates to a high-strength and high-plasticity alpha + beta double-phase titanium alloy based on collaborative evolution strengthening of multiple metastable phases and a preparation method of the high-strength and high-plasticity alpha + beta double-phase titanium alloy. The titanium alloy comprises the following chemical components in percentage by mass: 5.5 to 6.5 percent of Al element, 1.8 to 2.2 percent of Fe element, 2.3 to 2.7 percent of Nb element, 1.3 to 1.7 percent of Mo element, 1.3 to 1.7 percent of V element, 1.3 to 1.7 percent of Zr element and the balance of Ti. Solution quenching treatment is carried out in an alpha + beta two-phase region to obtain multiple metastable phases, and then aging treatment is carried out at 350-500 DEG C for 0.25-24 hours. According to the high-strength titanium alloy and the preparation method thereof, the alloy strength is greatly controlled and adjusted within the range of 1200-1800 MPa through cooperative regulation and control of various metastable phases, and therefore the performance bottleneck of a traditional high-strength titanium alloy in the aspect of strength and plasticity matching is broken through.

The invention provides a high-strength, high-plasticity and corrosion-resistant double-phase titanium alloy material. The titanium alloy material comprises the following components in percentage by mass: 5.2-6.9% of Al, 3.1-4.7% of V, 0.3-0.8% of Fe, 0.06-0.15% of 0 and the balance of titanium. The balance is Ti and inevitable impurities; the microscopic structure of the titanium alloy material comprises a primary alpha p phase and a beta t phase, the primary alpha p phase comprises a lath-shaped alpha p phase and an equiaxial alpha p phase, and the beta t phase comprises a lamellar secondary alpha s phase separated out in the beta t phase; the size of a secondary alpha s phase is refined through Fe-O microalloying, meanwhile, the spheroidizing degree of an equiaxial alpha p phase is improved, and double-phase structure optimization is achieved. Through Fe-O double-element microalloying synergistic strength and accurate regulation and control of an alpha p-alpha s double-phase structure, the strength of the titanium alloy is improved under the condition that plasticity is not reduced, high-strength and high-plasticity matching of the titanium alloy is achieved, meanwhile, excellent stability is kept in an extreme environment, and the service life of the titanium alloy is prolonged. And a low-cost novel titanium alloy material solution is provided for the high-end fields of aerospace, ocean engineering and the like.