131 results about "Titanium matrix composites" patented technology

The invention discloses a high-wear-resistance additive forming titanium-based composite material and a preparation method thereof. The high-abrasion-resistance additive forming titanium-based composite material is mainly composed of a base body and an amorphous ceramic film, and the high-abrasion-resistance additive forming titanium-based composite material is prepared from, by mass, 97.0%-99.8% of the base body and 0.2%-3% of the amorphous ceramic film. By accurately controlling the thickness and the quality of the amorphous ceramic film, the number and the size of the reinforced phases can be regulated and controlled, and the fluidity and the oxidation resistance of the additive manufacturing titanium alloy powder can be remarkably improved through introduction of the amorphous ceramic film; the in-situ synthesis ceramic reinforced titanium-based composite material prepared through additive manufacturing is free of cracks, high in hardness, good in wear resistance and suitable for being used under harsh working conditions.

The invention relates to a preparation method of a titanium-based composite material based on high-entropy boride ceramic modification, and belongs to the technical field of titanium-based composite material powder metallurgy. The high-entropy boride ceramic is (ZrHfTaTi) B2 in an equal molar ratio. The preparation method comprises the following steps that firstly, high-entropy boride ceramic powder and pure titanium powder are evenly mixed through ball-milling mixing, then the mixed powder is subjected to rapid hot pressing sintering, a sintered block is subjected to hot rolling treatment, and finally the titanium-based composite material is obtained. The composite material has excellent room-temperature and high-temperature comprehensive mechanical properties, the performance is greatly improved compared with commercial pure titanium, and the composite material can be used for manufacturing high-performance parts in the fields of aerospace and the like.

The application belongs to the technical field of metal material forming, and relates to a high-strength plastic titanium-based composite material ring-shaped piece and a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing titanium alloy powder and reinforcing phase powder, preparing a ring-shaped blank according to a process flow of "melting -> plasma rotating electrode atomization -> degassing and sealing welding -> hot isostatic pressing -> ring rolling", and finally performing annealing treatment on the ring-shaped blank to obtain a target ring-shaped piece. The application replaces the traditional laboratory small-batch ball milling method for preparing titanium-based composite material powder by using "large-batch mixing + vacuum induction melting rod preparation + plasma rotating electrode atomization method", so that the reinforcing phase can be introduced into the titanium matrix crystal and uniformly distributed, and the application is suitable for industrialized mass production requirements. The titanium-based composite material ring-shaped piece is prepared through the "powder metallurgy blank preparation + hot deformation" process, the size accuracy of powder metallurgy forming and the high efficiency of special-shaped ring rolling are utilized to achieve the effects of reducing the processing period, improving the material utilization rate and the forming rate.

The invention discloses an electric arc additive manufacturing method of a TaC particle reinforced TC4 titanium-based composite material and application of the electric arc additive manufacturing method, and belongs to the technical field of metal-based composite material additive manufacturing. According to the method, TC4 titanium alloy serves as a base body, TaC particles serve as a reinforcement phase, interlayer slurry coating and a cold metal transition electric arc additive process are combined, and uniform dispersion and effective reinforcement of the TaC particles in the base body are achieved through accurate raw material proportioning, slurry system optimization and process parameter regulation and control. When the adding amount of TaC is 5 wt.%, the tensile strength of the composite material reaches 1024 MPa, the ductility is 8.2%, the average hardness is 351 HV0.5, the wear rate is 27.3 mg / g, and the comprehensive mechanical performance is optimal; when the addition amount is 7.5 wt.%, the average hardness is improved to 386 HV0.5, the wear rate is reduced to 20.7 mg / g, but the tensile property is reduced, so that the high-wear-resistance composite material is more suitable for high-wear-resistance scenes. The problems of TaC particle agglomeration, poor interface bonding and unbalanced toughness are solved, the process is simple, convenient and efficient, the cost is controllable, and the method is suitable for large-scale manufacturing of high-performance structural parts in the fields of aerospace, national defense equipment and the like.

The invention relates to the technical field of alloy preparation, particularly provides a 650 DEG C high temperature resistant titanium-based composite material plate, and further provides a preparation method of the plate. The titanium-based composite material plate resistant to the high temperature of 650 DEG C, provided by the invention, is prepared from the following chemical components in percentage by mass: 6.0 percent to 7.0 percent of Al, 1.0 percent to 3.0 percent of Zr, 0.5 percent to 2.0 percent of Mo, 0.4 percent to 1.0 percent of Nb, 0.4 percent to 1.0 percent of W, 0.1 percent to 0.4 percent of Si, 0.4 percent to 0.7 percent of B, 0.01 percent to 0.10 percent of C and the balance of Ti and inevitable impurities. According to the titanium-based composite material component system provided by the invention, a vanadium element which is easy to generate interface reaction at high temperature is abandoned, and refractory metal elements such as niobium and tungsten are adopted to cooperate with a ceramic reinforced phase formed by boron, carbon and the like, so that the high-temperature performance and the thermal stability of the material are improved; meanwhile, by controlling the content of molybdenum, aluminum and other elements within a specific interval, the hot working performance of the material is remarkably improved while high strength is maintained, and the contradiction between insufficient high-temperature performance and poor hot working performance of a traditional titanium-based composite material is effectively solved.

The invention belongs to the technical field of composite material processing, and particularly relates to nano-particle reinforced titanium-based composite material powder and a preparation method. The method comprises the following steps: S1, selecting over-specification powder of which the contents of oxygen, nitrogen and hydrogen elements are lower than set values; s2, calculating a rare earth reactant adapted to be subjected to oxidation reaction based on the oxygen content of the over-specification powder; s3, the mixture of the super-specification powder and the rare earth reactant is ground for 6-12 hours; s4, the ground powder is poured into a large-size sintering mold with multiple cavities, the large-size sintering mold is put into a hot-pressing sintering furnace for high-temperature sintering, and an electrode is formed; and S5, preparing the electrode into composite material powder by adopting powder preparation modes such as gas atomization or electrode rotation. According to the method, the manufacturing cost of the nano-particle reinforced titanium-based composite material powder is reduced, and the electrode preparation process is shortened.

The invention discloses a preparation method and application of a graphene / titanium alloy electron beam cladding coating for inhibiting generation of TiC, and belongs to the technical field of titanium-based composite materials and preparation thereof. The method solves the technical problem that a TiC phase is easily generated in situ when the titanium alloy is subjected to surface enhancement by the existing graphene. According to the preparation method, the reaction of graphene and titanium alloy is inhibited through SiC, a C-Ti reaction path is inhibited from the source, and meanwhile, the depth of a molten pool is regulated and controlled by regulating and controlling electron beam current parameters, so that the dilution rate of the C element is controlled, the C element is subjected to complete solid solution in a matrix, TiC is not generated, TiC-phase-free coating preparation is realized, a graphene lamellar structure is completely reserved, and the preparation process is simple. The core advantages of self-lubrication and high mechanical strength are brought into full play, and the coating performance damage caused by TiC generation is avoided.

The application belongs to the technical field of metal matrix composite material preparation, and particularly relates to a preparation method and application of a powder for a titanium-based composite material. The powder prepared through a pre-homogenization-solidification-second powdering composite powder preparation route is highly uniform in composition, controllable in oxygen content, and good in interface bonding. The TMCs made of the powder are high in density, excellent and stable in mechanical properties. Through raw material combination and process innovation, the performance close to that of pre-alloyed spherical powder is realized at a lower cost, and the high-cost industrialization obstacle is broken. Further, the process flow of the application is stable, the yield of finished products is high, and the powder produced can be simultaneously applied to two mainstream processes of powder metallurgy and additive manufacturing, realizing "one powder for two uses", and greatly improving production flexibility and efficiency. The problems of poor uniformity and interface pollution of mechanically mixed powder, and high cost and difficult process of pre-alloyed powder are fundamentally solved.

The invention relates to a heat treatment regulation and control method for equiaxial alpha volume fraction of a laser deposition state titanium-based composite material, which comprises the following steps of: heating a sample of the laser deposition state titanium-based composite material to a heating final temperature along with a furnace, immediately cooling the sample to a cooling final temperature along with the furnace at a cooling speed of 1-15 DEG C / min, and taking out the sample from a heat treatment furnace after the sample is cooled to the cooling final temperature, thereby obtaining the equiaxial alpha volume fraction of the laser deposition state titanium-based composite material. The invention further provides a laser deposition state titanium-based composite material obtained through the method, the laser deposition state titanium-based composite material is a TiB2 reinforced Ti65 composite material, and compared with the laser deposition state titanium-based composite material, the yield strength at the room temperature is not lower than 850 MPa, and the tensile strength is not changed or slightly improved by 20-50 MPa; and under the condition that the tensile strength is not lower than 1150 MPa, the room-temperature ductility is improved by 100%-150%.

The application discloses a kind of preparation method and device of particle reinforced titanium matrix composite powder, belong to powder metallurgy technical field, the method is according to the process flow of "raw material preparation→inert gas replacement→raw material mixing→discharge and storage" preparation powder, the raw material mixing utilizes high-speed impeller mixing technology, makes nano reinforced particle uniform dispersion and adhere to titanium alloy spherical powder surface, forms the core-shell structure with titanium alloy spherical powder as core, nano reinforced particle as surface layer, avoids reinforcing phase aggregation.The device includes airtight mixing tank, high-speed impeller assembly for mixing raw materials and inert gas system communicated with the airtight mixing tank, the outer wall of tank is provided with double-layer water cooling structure for controlling the temperature in tank during mixing process.The powder prepared by high-speed impeller shear mixing method perfectly adapts to the stringent requirements of 3D printing, powder hot isostatic pressing and other high-end forming processes on powder fluidity.

The invention relates to the technical field of metal-based composite materials, in particular to a preparation method of a titanium-based composite material with a bimodal non-uniform net structure. The invention provides a preparation method of a titanium-based composite material with a bimodal non-uniform net structure, which comprises the following steps: mixing titanium alloy metal powder as a base material with nano titanium diboride, lanthanum hexaboride and a silicon powder reinforcement material through high-energy ball milling to obtain composite powder; a field-assisted sintering technology (FHP) is utilized, and a non-continuous reinforced titanium-based composite material (DRTiMCs) sintered blank is obtained; and carrying out heat preservation in a vacuum heat treatment furnace, and then carrying out a hot rolling experiment to obtain the DRTiMCs with the bimodal non-uniform network structure. The bimodal non-uniform net structure is composed of micron TiBw, nano TiBw, nano La2O3 and nano silicide, DRTiMCs of the bimodal non-uniform net structure have excellent strength and ductility, the tensile strength reaches 1544 MPa and 1560 MPa, and the percentage elongation after fracture is 7.7% and 10.2%. The DRTiMCs provide a good working idea for further development and engineering application of the composite material in the fields of aviation and aerospace.

This invention discloses an ultra-high strength and plasticity three-dimensional multi-level hybrid heterogeneous titanium-based composite material and its preparation method. The method includes: 1. performing a flow friction coating treatment on titanium alloy powder and modified amorphous cracked carbon with high active sites; 2. performing a flow friction coating treatment on modified high active and highly dispersed boron source; 3. low-temperature short-time high-pulse current-assisted vacuum hot pressing sintering; 4. multiple non-constant rate hot deformation treatments. This invention uses modified amorphous cracked carbon with high active sites and modified high active and highly dispersed boron source as reinforcing phase precursors to sequentially coat a titanium alloy powder matrix. Combined with sintering and hot deformation treatments, a multi-level, multi-scale, and multi-heterogeneous phase structure is constructed in four dimensions to obtain a three-dimensional multi-level hybrid heterogeneous titanium-based composite material, which exhibits ultra-high strength and plasticity, with a tensile strength of 1430 MPa to 1605 MPa and an elongation of 7.5% to 9%.

The invention relates to the technical field of metal-based composite materials, in particular to a nanometer lanthanum hexaboride reinforced titanium-based composite material and a preparation method of the nanometer lanthanum hexaboride reinforced titanium-based composite material. The composite reinforcements are uniformly dispersed in the titanium alloy matrix; wherein the composite reinforcement is of a core-shell structure, the core of the core-shell structure is nano lanthanum hexaboride particles, and the shell layer of the core-shell structure is an in-situ reaction layer coating the outer surfaces of the nano lanthanum hexaboride particles; the in-situ reaction layer is a transition layer with components and a structure in gradient change, and the transition layer at least comprises a La / B-rich amorphous transition region and a TiB whisker layer which are distributed from inside to outside. According to the preparation method, low-energy mixing and spark plasma sintering are adopted, controllable in-situ reaction of nano LaB6 and Ti is induced, a LaB6 core and gradient reaction layer core-shell structure composite reinforcement is constructed, and nano La2O3 particles are separated out, so that reinforcement phase agglomeration is inhibited, interface bonding is improved, and the contradiction of strong plasticity inversion is solved.

A kind of thermomechanical method for regulating precipitated size of silicide in silicon-containing titanium-based composite material, it relates to the field of titanium-based composite material, the method of the present application is to place sintered discontinuous reinforced silicon-containing titanium-based composite material after cutting and polishing in thermomechanical machine, so that the material is uniformly distributed along the temperature distribution in the deformation direction;Thermomechanical treatment is carried out under the condition that the temperature is 600-800 DEG C and the pressure is 100-300 MPa, stop thermomechanical treatment after reaching the specified deformation, unload and air cooling, that is, complete.The present application realizes the accurate regulation of the precipitated size of silicide in titanium-based composite material by adjusting the two parameters of temperature and stress in thermomechanical treatment process simultaneously, and widens the custom interval of the precipitated size of silicide.The present application is applied to the field of in-situ autogenous titanium-based composite material organization design and regulation technology.

The invention discloses an additive manufacturing method of a high-temperature-resistant titanium-based composite material with good room-temperature strong plasticity matching, relates to the field of metal-based composite materials, and aims to solve the problem that the high temperature resistance and near-net forming cannot be considered at the same time when an existing titanium-based composite material, especially titanium alloy TA15, TiB2 and Si powder is used as a reinforced phase additive for manufacturing the titanium-based composite material. The method comprises the steps that TA15 titanium alloy powder serves as a base body, TiB2 and Si powder serves as a reinforcing phase, a titanium-based composite material is prepared through the selective laser melting technology, then annealing heat treatment is conducted, and the additive manufacturing method is completed. According to the method, the problems that the titanium-based composite material prepared through selective laser melting is poor in room-temperature plasticity and insufficient in heat resistance are remarkably improved, the microstructure of the material is improved through annealing heat treatment, residual stress is released, silicide is separated out through introduction of the Si element, the high-temperature strength of the material is improved, the room-temperature plasticity of the material is remarkably improved, and the heat-resistant temperature of the material is remarkably improved.

The invention discloses a wear-resistant coating of a graphene reinforced titanium alloy and a preparation method and application of the wear-resistant coating, and belongs to the technical field of titanium-based composite materials and preparation of the titanium-based composite materials. The problems that an existing method for preparing the graphene reinforced titanium-based composite coating is complex in process, serious in raw material waste and the like are solved. Graphene is dispersed into a polyvinyl alcohol solution, the solution is preset on the surface of a TC4 matrix, drying and film forming are carried out, then electron beam cladding is carried out, the formed composite material coating takes the base material as a matrix source, firm metallurgical bonding is formed between the coating and the base material, and the composite material coating with high abrasion resistance is obtained. The preparation method provided by the invention is simple, and only the graphene preset on the surface of the titanium alloy needs to be cladded by electron beams; compared with traditional laser cladding, the method has the advantages that the graphene and the titanium alloy powder do not need to be subjected to ball milling treatment in advance, the preparation difficulty is greatly reduced, material loss is remarkably reduced in the machining process, and industrial production is easier to achieve.

The invention discloses a titanium-based composite undercarriage drop simulation analysis method, and relates to the technical field of aviation, and the method comprises the steps: building a buffer mechanical model of a titanium-based composite undercarriage, the buffer mechanical model covering an air spring force, an oil damping force and a structure limiting force; establishing a rigid-flexible hybrid virtual prototype model based on a multi-body dynamics method, wherein the rigid-flexible hybrid virtual prototype model realizes component integration through geometric modeling, flexible body creation and rigid-flexible coupling processing; carrying out drop test simulation, and obtaining a dynamic response curve of the undercarriage under the impact load through parameter setting and dynamics calculation; through combination of rigid-flexible coupling modeling and drop test simulation, simulation of the drop behavior of the titanium-based composite undercarriage is realized. According to the method, the test cost can be reduced, the research efficiency is improved, and the method has important engineering significance for lightweight and high-performance design of the undercarriage.

The application discloses a kind of local reinforcement selected area laser melting deposition high-strength titanium alloy preparation method and system, belong to additive manufacturing technical field.The local reinforcement selected area laser melting deposition high-strength titanium alloy preparation method provided by the application, by establishing target titanium alloy structure three-dimensional model and carrying out finite element limit load simulation analysis, stress distribution and potential dangerous area are identified;Based on the analysis result, the performance requirement is divided, the material enhanced local area is determined, and the laser scanning path and powder feeder movement trajectory are planned;Path file is imported into composite equipment to set process parameters;Titanium-based composite material powder is selectively laid in the enhanced area, and a locally reinforced structure is obtained by selective laser melting.The scheme realizes the spatial selective distribution of powder composition, forms a uniform distribution of high-stress areas, significantly improves the local strength and maintains the overall strength and plasticity matching, effectively solves the problem of insufficient performance matching of titanium alloy components under complex load.

The application discloses a high-wear-resistance additive forming titanium-based composite material and a preparation method thereof. The high-wear-resistance additive forming titanium-based composite material is mainly composed of a matrix and an amorphous ceramic film, and the mass fraction of each component of the high-wear-resistance additive forming titanium-based composite material is as follows: the matrix is 97.0-99.8%, and the amorphous ceramic film is 0.2-3%. The application can realize the quantity and size regulation of the reinforcing phase by precisely controlling the thickness and mass of the amorphous ceramic film. The introduction of the amorphous ceramic film can significantly improve the flowability and oxidation resistance of the additive manufacturing titanium alloy powder. The in-situ self-grown ceramic reinforced titanium-based composite material prepared by additive manufacturing is crack-free, has high hardness and good wear resistance, and is suitable for use under harsh working conditions.

The invention discloses a preparation process for obtaining a titanium matrix composite material with excellent high-temperature tensile properties. B4C powder and TA15 powder are placed in a ball mill according to a certain ratio for low-energy ball milling to make them fully mixed; the mixed powder is prepared into a shape through a laser melting deposition process; the formed composite material is placed in liquid nitrogen at -196°C, and the holding time is 0 < t ≤ 11 days to obtain a B4C-TA15 titanium matrix composite material. The tensile strength (tensile strength) and elongation (tensile plasticity) of the B4C-TA15 titanium matrix composite material obtained by additive manufacturing and cryogenic treatment are both improved under a high-temperature environment of 600°C.

This invention discloses an in-situ self-generated TiBw and TiCp synergistically reinforced bi-matrix heterostructure titanium matrix composite material prepared by powder metallurgy, and its preparation method. This invention aims to solve the problems of "strength-plasticity mismatch" and insufficient dynamic impact energy absorption efficiency in traditional titanium alloys and their composites. The composite material uses pure Ti as the soft phase, TC4 as the hard phase, and B4C particles as the reinforcing precursor. It can be formed by low-energy ball milling, vacuum drying, rapid hot pressing sintering, and heat treatment, without subsequent rolling or forging. B4C reacts in-situ with the matrix to generate TiBw (TiBw) and TiCp (TiCp), constructing a discontinuous in-situ self-generated bi-scale TiBw and TiCp synergistically reinforced heterostructure at the soft-hard phase interface, achieving a significant synergistic effect of strengthening and toughening. The prepared composite material has a quasi-static tensile strength of 1085 MPa and a fracture strain of 16.3%; at 3000 s⁻¹, the tensile strength is 1085 MPa. ‑1 The dynamic compressive strength under strain rate reaches 1562 MPa, with a true strain of 27.8% and an energy absorption efficiency of 408 MJ / m³. This composite material achieves synergistic optimization of high strength, high plasticity, and high energy absorption through mechanisms such as twinned coordinated plasticity, multi-stage whisker fracture energy dissipation, and adiabatic shear band suppression. The invention features a simple process and low cost, making it suitable for the fabrication of lightweight, high-impact-resistant structural components for aerospace, armor protection, and other applications.

This invention relates to a method for recycling residual feedstock from plasma rotating electrode atomization. The invention addresses the problems of low material utilization, low powder yield, and high processing costs associated with current plasma rotating electrode atomization methods for producing powders from titanium alloy, high-temperature alloy, and titanium-based composite material rods. The method involves: preparing a cylindrical graphite mold; manufacturing a graphite ring; sanding the sides of the feedstock with sandpaper; sanding the conical bottom surface of the feedstock with sandpaper; sanding the bottom and bottom sides of the feedstock; assembling the feedstock; inserting the press head into the cylindrical graphite mold and sintering at high temperature; and turning the bottom and bottom sides of the feedstock on a lathe, thus completing the recycling of the residual feedstock from plasma rotating electrode atomization. This invention significantly improves material utilization, reduces the proportion of machining, and further lowers the cost of preparing titanium alloy and titanium-based composite powders using the plasma rotating electrode atomization method.

The present application relates to a kind of room temperature strong plasticity and high temperature strength matching gap reinforced titanium matrix composite and its preparation method, belong to titanium matrix composite technical field.To solve the problem that the method for introducing gap element into titanium matrix composite is difficult to realize uniform distribution of gap element, first, gap element additive powder, reinforcing phase reactant powder and titanium alloy matrix powder are mixed ball milling to obtain raw material powder, the raw material powder is made into raw material bar by hot pressing sintering or hot isostatic pressing, and the raw material bar is made into gap element reinforced titanium matrix composite powder by plasma rotating electrode atomization powder preparation;Finally, the titanium matrix composite powder obtained is hot pressed sintering or hot isostatic pressing to obtain gap reinforced titanium matrix composite.The present application introduces gap element in situ in titanium matrix composite powder, realizes the accurate control of the content and distribution of gap element, and the obtained series of titanium matrix composite has good strength and plasticity matching at room temperature, and the high temperature strength is also greatly improved.

The application discloses a preparation method of high-strength and high-ductility titanium-based composite material with a composition gradient, and comprises the following steps: 1, material selection: selecting a plurality of Mo equivalent different beta type titanium alloy powder as a matrix material, and selecting carbon nanoparticles as a precursor material of a reinforcing body; 2, powder mixing: placing the plurality of Mo equivalent different beta type titanium alloy powder and the carbon nanoparticles in a ball mill and ball milling and uniformly mixing; 3, forming: performing plasma sintering forming on the mixed powder; 4, heat treatment: performing solid solution treatment on a titanium-based composite material blank to obtain the high-strength and high-ductility titanium-based composite material with the composition gradient. The application utilizes a powder metallurgy method to sinter the plurality of Mo equivalent different beta type titanium alloy powder and the carbon nanoparticles into a bulk alloy, so that the sintered bulk alloy has the composition gradient, and the prepared titanium-based composite material with the composition gradient has excellent mechanical properties and is a high-strength and high-elongation composite material.

The invention belongs to the technical field of titanium-based composite materials, and particularly relates to a multi-component composite material reversely constructed based on machine learning and a design method. The method comprises the following steps: selecting a reinforcement phase which is expected to realize the high-strength and high-plasticity titanium-based composite material from the existing reinforcements, analyzing the reinforcements, the content and the distribution structure which have great influence on the comprehensive mechanical properties of the titanium-based composite material by utilizing a method of combining machine learning with first principle simulation, and obtaining the high-strength and high-plasticity titanium-based composite material according to the obtained result. And a laser additive manufacturing process and a high-energy ball milling process are utilized to prepare a printed piece. According to the method, the data mining capability of machine learning, the theoretical analysis advantages of a first principle and an advanced material preparation process are integrated, and an efficient, scientific and systematic new way is provided for research and development of the titanium-based composite material.

The invention belongs to the technical field of titanium-based composite material preparation, and particularly relates to a titanium-based composite material-oriented LPBF process parameter reverse design method, which comprises the following steps of: establishing a data set and dividing the data set into a training set and a test set; performing model training by using the training set, performing model precision verification by using the test set, and establishing an XGBoost model; carrying out reinforcement learning on the XGBoost model by utilizing an SARSA algorithm to obtain an XGBoost-SARSA intelligent agent model; and inputting preset target material performance data into the intelligent agent model to obtain the optimal process parameters corresponding to the preset target material performance data. According to the method provided by the invention, the target performance is used as a guide, the optimal process path meeting the specific performance requirement can be directly and efficiently determined, and the preparation process of an actual engineering workpiece is guided through a model prediction result, so that accurate manufacturing and process optimization of a high-performance material are realized.

The application discloses a titanium-based composite material and a preparation method and application thereof, and the titanium-based composite material is composed of Ti 70wt%-90wt%, W 10wt%-30wt%, and inevitable impurities in the rest; wherein, the W particles are dispersedly distributed on the Ti matrix and a Ti / W gradient diffusion zone exists. The ductile W particles replace the ceramic particles, which can achieve the effect of hardening and will not cause the plasticity of the material to be greatly reduced; the Ti / W gradient diffusion zone can accommodate more dislocations to coordinate deformation in the plastic deformation process, so that the plasticity of the material is further improved. The process flow of the application is very short, and the rapid preparation of the high-performance titanium-based composite material can be realized, and the problems of long process flow and great processing difficulty of the traditional titanium-based composite material are solved.

The application discloses a kind of solid solution strengthening net structure super high strength and toughness titanium matrix composite and preparation method thereof, which comprises: one, sequentially with titanium alloy matrix powder of nanometer carbide containing beta stabilizing element and nanometer carbon source / boron source are mixed by multi-step low-energy ball milling;Two, after densification rapid sintering, titanium matrix composite is obtained by hot deformation processing.The application uses multi-step low-energy ball milling mixing, by carbide introduction beta stabilizing element solid solution strengthening intracrystalline titanium matrix, using nanometer carbon source / boron source and the interface reaction product of titanium is formed TiC p Or TiB w Surrounding the discontinuous net structure of grain boundary strengthens grain boundary, while high-density acicular alpha" precipitated phase is precipitated in equiaxial beta-Ti matrix during hot deformation processing, the solid solution strengthening net structure makes titanium matrix composite have super high strength and excellent room temperature elongation, realizes the matching of strength and plasticity, and the method is simple, easy to realize, suitable for aerospace titanium alloy structural materials.

The application discloses a Sn / Y synergistically micro-alloyed graphene / TC4 composite material and a preparation method thereof, and belongs to the technical field of graphene / titanium-based composite material preparation. In order to solve the problems of the strength and plasticity synergy of the graphene / TC4 composite material, Sn powder, Y2O3 powder and TC4 powder are uniformly mixed, then the mixed powder is added into a ball mill tank, and graphene powder is added in batches to carry out multiple ball milling to obtain a composite powder; a mold filled with the composite powder is placed in a sintering furnace, an axial pressure of 40-45 MPa is applied to the mold, and plasma sintering treatment is carried out to obtain a sintered composite material blank; the sintered composite material blank is subjected to oxidation scale removal, round billet processing and sandpaper polishing to obtain a hot-rolled initial sample; and multi-pass rolling is carried out until the total reduction is 75%, and then air cooling is carried out to room temperature to obtain the composite material. The application strengthens the grid structure by changing the second phase distribution of the interface, so that the overall properties of the graphene / TC4 composite material are improved.

The invention discloses a preparation method and application of an in-situ synthesis TiC particle reinforced titanium-based composite material, and relates to the technical field of metal-based composite material preparation. According to the method, the consumable electrode is prepared from the raw materials of the titanium sponge, the high-carbon intermediate alloy and the intermediate alloy, the prepared consumable electrode is subjected to vacuum consumable smelting, carbon elements in the titanium sponge and the high-carbon intermediate alloy are subjected to in-situ reaction, and the TiC particle reinforced titanium-based composite material is obtained. A novel reinforcing phase TiC particle introduction mode is adopted, the preparation cost of TiC particles and reactants is saved, and the preparation cost of the TiC particle reinforced titanium-based composite material can be remarkably reduced. Compared with C powder and B4C powder, the high-carbon intermediate alloy is mixed with sponge titanium in a particle form, so that the problem that the powder is not uniformly distributed in an electrode block can be avoided, the TiC particle reinforced titanium-based composite material with more uniform TiC particle distribution can be prepared, and the TiC particle reinforced titanium-based composite material can be applied to the fields of aerospace, national defense military industry, chemical industry, automobiles and the like.