795 results about "Ti element" patented technology

The invention discloses high magnetic induction oriented silicon steel and a production method. The high magnetic induction oriented silicon steel comprises the following components in percentage by weight: 0.032 to 0.065 percent of C, 2.58 to 4.02 percent of Si, 0.014 to 0.036 percent of Als, 0.021 to 0.043 percent of Mn, 0.0015 to 0.014 percent of Nb, 0.0015 to 0.0084 percent of B, 0.0037 to 0.0081 percent of N and 0.004 to 0.015 percent of S. A large amount of B element is added, a proper amount of BN and other congenital inhibitors can be provided, the situation that primary grains are too large is effectively avoided, meanwhile, boron oxide, boric acid and borate are added into the magnesium oxide additive, an acquired inhibitor can be generated with N, an AlN + BN double-inhibitor system is formed, and the stability of magnetic performance is guaranteed; and the temperature is kept at 910-1005 DEG C for 18-25 hours, so that B is fully diffused and forms a new BN inhibitor with N, and the stability of the magnetic performance is effectively improved.

The invention provides a high-dielectric low-loss X7P type dielectric ceramic material and a preparation method and application thereof, and relates to the technical field of functional ceramic materials, the dielectric ceramic material is composed of a perovskite type compound as a main component and an auxiliary component; wherein the perovskite type compound contains a Ba element and a Ti element, and the auxiliary components comprise a first auxiliary component containing an Mg element, a second auxiliary component containing SiO2, a third auxiliary component containing an Mn element and a fourth auxiliary component containing a rare earth element R. According to the invention, barium titanate is doped and modified, so that the excellent performance of combining different compounds is realized, the dielectric constant and temperature stability of the dielectric ceramic material are improved, and the dielectric loss is reduced.

The invention belongs to the technical field of solid hydrogen storage, and particularly relates to a Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy high in volume capacity and easy to activate and a preparation method of the Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy, the specific composition of the hydrogen storage alloy is Ti < 1 > Fe < 0.9 > Mn < 0.1 > Ce < x > Zr < y >, x is any one of 0.02, 0.04 and 0.06, and y is any one of 0.02 and 0.06. By optimizing alloy components, transition elements Mn and Zr and a rare earth element Ce are added into the AB type hydrogen storage alloy TiFe, the rare earth element Ce exists in the form of an independent phase, and the transition elements Zr and Mn partially replace elements on the A side and the B side respectively, so that second phases Ce, CeO and ZrMn2 appear in a TiFe matrix, and the activation performance of the Ti-Fe-based alloy is remarkably improved.

The invention provides a titanium alloy-based composite coating structure, a method for inhibiting upward dilution of Ti during cladding of a wear-resistant layer on the surface of a titanium alloy and application of the titanium alloy-based composite coating structure. The method comprises the steps that an aluminum bronze barrier layer is formed on a titanium alloy substrate, the phase structure of the aluminum bronze barrier layer comprises a Cu phase and a Cu2TiAl phase, the Cu phase and the Cu2TiAl phase are each of an FCC crystal structure, and the Cu2TiAl phase is formed by reacting Ti in the titanium alloy substrate with Cu and Al; the volume ratios of a Cu phase and a Cu2TiAl phase in the aluminum bronze barrier layer are 40%-45% and 55%-60% respectively; and forming the transition alloy wear-resistant layer on the titanium alloy substrate with the aluminum bronze barrier layer by adopting a laser cladding technology. The aluminum bronze barrier layer is arranged to reduce upward dilution of Ti elements in the cladding process of the transition alloy wear-resistant layer, generation of a large number of hard brittle phases is avoided, the difference between the wear-resistant layer and a titanium alloy matrix in the thermophysical property aspect is relieved, and coating cracking is reduced.

A Si alloy powder for a negative electrode, the Si alloy powder including: a Si phase; a SiX compound phase; and at least one selected from the group consisting of a SnY compound phase and a AlY compound phase, in which the element Y in the SnY compound phase and the AlY compound phase includes at least one element selected from the group consisting of Cu, Fe, Ni, Cr, Co, Mn, Zr, and Ti, the Si alloy powder has an average particle diameter of 30 μm or less, and an amount of the Si phase in an entire Si alloy is 30 mass % to 95 mass %.

The invention discloses a coating for improving the paint adhesion capability of a metal part of a distribution box, and the coating is prepared by the following steps: depositing a first oxide layer on the metal surface, the first oxide layer comprising Zn element and Ce element; a second oxide layer is deposited on the surface of the first oxide layer, the second oxide layer comprises a Zn element and a Ce element, and the molar ratios of the Zn element and the Ce element of the first oxide layer and the second oxide layer are different; a third oxide layer is deposited on the surface of the second oxide layer, and the third oxide layer comprises a Zn element and a Dy element; and a fourth oxide layer is deposited on the surface of the third oxide layer, the fourth oxide layer comprises a Zn element and a Dy element, and the molar ratios of the Zn element and the Dy element of the third oxide layer and the fourth oxide layer are different. The coating provided by the invention can improve the adhesive ability of the paint to a metal substrate.

The invention provides a high-dielectric low-loss ceramic composition as well as a preparation method and application thereof, and relates to the technical field of functional ceramic materials, the high-dielectric low-loss ceramic composition comprises a perovskite type compound serving as a main component and an auxiliary component; wherein the perovskite type compound contains a Ba element and a Ti element, and the auxiliary components comprise a first auxiliary component containing an Mg element, a second auxiliary component containing an Nb element, a third auxiliary component containing an Mn element, a fourth auxiliary component containing a rare earth element R, and a fifth auxiliary component containing SiO2. According to the present invention, the ratio of the main components to the auxiliary components is subjected to design optimization, the ratio of the Nb element in the second auxiliary component to the Mn element in the third auxiliary component is adjusted, and the material preparation process parameters are subjected to optimization control, such that the dielectric constant and the temperature stability of the dielectric ceramic material are improved, and the dielectric loss is reduced.

The invention discloses a high-entropy alloy wear-resistant coating with a silicon-containing transition layer for improving the wettability of a copper surface and a laser cladding method, and relates to the technical field of alloy coatings. The method comprises the following steps: providing silicon-containing transition layer alloy powder and CoCrFeNiTi series high-entropy alloy powder; providing a copper base material, and cleaning the surface to be cladded of the copper base material; cladding silicon-containing transition layer alloy powder on the surface of the copper base material by adopting a laser cladding process under a protective atmosphere to form a silicon-containing transition layer; and under the protective atmosphere, CoCrFeNiTi series high-entropy alloy powder is cladded on the surface of the silicon-containing transition layer through a laser cladding process, and the high-entropy alloy wear-resistant coating is formed. According to the high-entropy alloy coating disclosed by the invention, the Si element in the transition layer can be subjected to interface reaction with a copper substrate to form a Cu-Si solid solution phase with low interface energy, so that the interface tension between copper and a subsequent cladding coating is remarkably reduced, and the wettability between the copper substrate and a coating material is fundamentally improved; the high-entropy alloy coating is successfully cladded on the copper surface with poor wettability.

The invention discloses an ultrahigh-temperature multi-element iridium alloy material and a preparation method thereof, and belongs to the technical field of alloy materials. The iridium alloy material comprises the following elements in percentage by mass: 53 to 58.5 percent of Ir, 40 percent of Ta, 0.5 to 2 percent of Y and 1 to 5 percent of Re. The preparation method of the iridium alloy material comprises the following steps: weighing Ir, Ta, Y and Re metal powder in proportion and uniformly mixing; blank pre-pressing treatment is conducted on the evenly-mixed metal powder, the metal powder is die-cast into a block, and a pressed blank is obtained; the pressed blank is smelted through an electric arc smelting method, and an iridium alloy crude product is obtained after smelting is finished; and the smelting is repeated for more than 7 times, so that the pressed blank is uniformly smelted, the content of each component reaches the standard, and the iridium alloy material is prepared. According to the iridium alloy material, through the synergistic effect of multiple elements and the preparation technology, the triple effects of structural distortion strengthening, high-temperature stability and oxidation film integrity are achieved. And due to the high mixed entropy, a similar high-entropy alloy structure is formed, the high-temperature oxidation resistance is remarkably improved, and the alloy is suitable for various ultra-high-temperature environments.

The application discloses a composite precipitation strengthening type high-entropy alloy and a preparation method thereof, and belongs to the field of metal material preparation. The high-entropy alloy is composed of Al, Co, Cr, Fe, Ni, Cu, V and Ti elements, and a general formula thereof is Al a Co b Cr c Fe d Ni e Cu f V g Ti h , wherein 2 <= a <= 4, 16 <= b <= 20, 16 <= c <= 20, 16 <= d <= 20, 35 <= e <= 40, 0 <= f <= 3, 0 <= g <= 3, 0 <= h <= 3, and a + b + c + d + e + f + g + h = 100. The high-entropy alloy is prepared through vacuum arc melting and heat treatment, and has excellent mechanical properties. The various metal raw materials used are environment-friendly, the preparation process is relatively safe, and the high-entropy alloy can be industrially produced.

This α+β type titanium alloy comprises 4.00-5.50% of Al, 1.40-4.50% of one or both of Fe and Cr, 1.50-5.00% of Mo, 0-4.00% of V, 0.05-0.25% of O, less than 0.10% of Si, less than 0.010% of C, and Ti and impurities as the remainder, wherein: included in the structure are a granular α phase having an aspect ratio of 8 or less and a mixed structure including a needle-like α phase and a β phase; the maximum width of the needle-like α phase is 0.01-5.00 μm; and, where the element having the higher content between Fe and Cr is element M, the concentration distribution of element M in the mixed structure satisfies formula (1).　Formula 1: (A - B) × C / D ≥ 0.160

The invention discloses a CuCr contact and a preparation method thereof, and belongs to the field of alloy contact manufacturing, the CuCr contact is divided into an arc contact area, a transition area and a conductive connection area, and the Cr content of each area is in gradient distribution and is sequentially reduced, so that interface stress concentration can be avoided, and the structural compatibility and mechanical reliability of the whole contact are improved; meanwhile, integrated forming is achieved through the 3D printing technology, the size and the component boundary of each area can be accurately controlled, the complex structure design requirement of the contact is met, and the problems that in the prior art, performance gradient cannot be achieved according to the function requirements of different parts of the contact, and the material utilization rate is low are solved; the printed contact does not have the phenomena of composition segregation, agglomeration, uneven pores and the like, and the problems that in the prior art, Cr elements are difficult to distribute uniformly in a Cu matrix, Cr particles are prone to segregation and agglomeration, local ablation resistance is insufficient, and burning resistance is low are solved.

The invention discloses a high-strength and high-plasticity copper alloy and a preparation method thereof. The high-strength and high-plasticity copper alloy is prepared by mixing Cu-Al pre-alloyed spherical powder and CuO powder according to the mass ratio of (100-150): 1, wherein the Cu-Al pre-alloyed spherical powder and the CuO powder are different in particle size range. The solid solution state Al element part in the high-strength plastic copper alloy is oxidized into Al2O3 through CuO, and the Al2O3 exists in a Cu matrix. The preparation method comprises the following steps: (1) mixing Cu-Al pre-alloyed spherical powder with CuO powder, and drying; (2) cold isostatic pressing treatment; (3) vacuumizing, sintering at a high temperature in a protective atmosphere, and cooling; (4) vacuumizing, reducing in a reducing atmosphere, and cooling; and (5) after preheating, the copper alloy reduction blank is placed in a rotary forging die, rotary forging and air cooling are conducted, and the copper alloy is obtained. The high-strength plastic copper alloy is good in conductivity and mechanical property and high in plasticity. The method is simple in process, environmentally friendly, low in cost and suitable for industrial production.

The invention relates to a Ti element doped high-performance high-temperature samarium cobalt permanent magnet material and a preparation method thereof, and belongs to the field of rare earth permanent magnet materials. Elements of Sm, Co, Fe, Cu, Zr and Ti with the purity higher than 99.9% are uniformly mixed and smelted into an original cast ingot, a powder metallurgy preparation technology is adopted, the cast ingot is ground into alloy powder, and the samarium-cobalt permanent magnet material is prepared through orientation compression, isostatic pressing, high-temperature sintering, solid solution and isothermal aging heat treatment processes. According to the invention, by doping the Ti element, the grain size is increased, the grain boundary impurity phase precipitation is inhibited, and the thickness and the content of the flaky phase are properly reduced, so that the number of reverse magnetization nucleation sites is reduced, and the magnetic properties such as the coercive force and the maximum magnetic energy product of the magnet are effectively improved.

The invention discloses a preparation device of a titanium hydrogen storage alloy for solid hydrogen storage, which comprises a vacuum induction melting system and an ultrasonic generation system, the vacuum induction melting system comprises a vacuum chamber, a melting mechanism and a heatable mold which are arranged in the vacuum chamber, and a vacuum pump communicated with the vacuum chamber; the ultrasonic generation system comprises an ultrasonic generator, an amplitude-change pole and an ultrasonic probe which are connected in sequence, one end of the ultrasonic probe extends into the vacuum chamber, and a mobile positioning system for controlling the position of the ultrasonic probe is arranged on the vacuum induction melting system; the invention further discloses a preparation method of the titanium hydrogen storage alloy for solid hydrogen storage. According to the device, the ultrasonic generation system is arranged, ultrasonic waves are applied in the raw material smelting process, segregation of the Ti element is effectively restrained, meanwhile, dendritic crystal arms are broken in the alloy solidification process, more nucleation sites are formed to refine grains, and the device is suitable for preparing the titanium hydrogen storage alloy for solid hydrogen storage.

Disclosed is a lightweight, high-strength, corrosion-resistant aluminum alloy material, including: Mg 6.0-10.0 wt %, Zn 1.0-3.5 wt %, Si 0.1-1.3 wt %, and at least one of Mn, Cu, Zr, Sc, and Ti elements with a total amount of not greater than 0.8 wt %, and a balance of Al and inevitable impurities. Further disclosed are a method of producing a deformed aluminum alloy material, a method of producing a casting aluminum alloy material, a product and a final construct. The aluminum alloy material exhibits excellent low density, high strength, corrosion resistance, and damage resistance.

The invention discloses a titanium-based hydrogen storage alloy with long service life and high capacity and a preparation method thereof, the general formula of the alloy is Ti < 0.85 > Zr < 0.15 > Mn < 1.05-x > Cr < 0.85 > (FeV) < x >, and x is more than 0 and less than or equal to 0.1. The titanium-based hydrogen storage alloy disclosed by the invention has the characteristics of long service life, large reversible hydrogen storage capacity, easiness in activation, moderate hydrogen absorption and desorption platform pressure, fast hydrogen absorption and desorption dynamics and high safety, and is particularly suitable for hydrogen storage and supply application of small and medium-sized fuel cells; moreover, in the preparation process of the titanium-based hydrogen storage alloy, cheap FeV50 is adopted as a Fe and V element raw material, so that the titanium-based hydrogen storage alloy has the advantages of low alloy cost and easiness in large-scale production; and a small amount of V element can slow down pulverization of the titanium-based hydrogen storage alloy in the cyclic process, prolong the cycle life of the alloy and reduce the oxidative combustion risk of the alloy.

According to the preparation method for preparing the CuCr alloy with the high Cr content through the vacuum non-consumable electric arc furnace or the induction melting furnace, through the design concept of microelement alloying, the CuCr alloy can be fully and evenly diffused in the smelting process by adding a trace amount of miscible elements such as Al and Ti; the alloy comprises, by mass, 44%-52% of Cu, 43%-47% of Cr, 2%-8% of Al, 0%-5% of Ti, 0%-2% of Mo and 0%-2% of Nb, and elements with the purity larger than 99.9 wt% serve as raw materials. Compared with an infiltration method, the alloy material prepared by the method disclosed by the invention is more compact in structure, smaller in grain size of the Cr phase and higher in hardness, so that the alloy material has excellent wear resistance and mechanical properties.

The present application relates to the manufacture of high-strength steel coated plate welded parts, in particular to a welding material, a high-strength steel workpiece, a laser welded joint and a manufacturing method thereof. The composition of the welding material satisfies the following conditions in terms of percentage by weight: C is greater than or equal to 0.5%, trace alloying elements are 0-0.36%, the content of Mn and Si is less than or equal to 2%, 6% is greater than or equal to 5C+Mn and is greater than or equal to 2.5%, and the rest is Fe and inevitable other elements; the trace alloying elements are at least one of Nb, V and Ti elements, and the content of Nb, V and Ti elements is less than or equal to 0.12%. The method does not need to remove the aluminum coating, utilizes the solid solution strengthening effect of C, and makes the volume fraction of lath martensite in the final weld after quenching greater than or equal to 90%. This scheme reduces the addition of alloying elements, reduces the cost and process control difficulty, avoids the formation of coarse carbides, improves the mechanical properties and stability of the joint, has high fracture strength and elongation, and realizes the double improvement of the strength and toughness and economy of the joint.

The invention discloses normalizing-free copper-containing high-magnetic-induction oriented silicon steel and a production method. The normalizing-free copper-containing high-magnetic-induction oriented silicon steel comprises the following components in percentage by weight: 0.015 to 0.043 percent of C, 2.74 to 4.31 percent of Si, 0.011 to 0.031 percent of Als, 0.045 to 0.097 percent of Mn, 0.31 to 0.59 percent of Cu, 0.05 to 0.15 percent of Sb, 0.0049 to 0.0103 percent of N and 0.005 to 0.017 percent of S. A relatively large amount of Cu element is added through steelmaking, and an enough innate inhibitor CuxS is obtained by adjusting a hot rolling process, so that the aim of omitting a normalizing process is fulfilled; the AlN inhibitor is obtained through the nitriding technology, a certain amount of sulfate or sulfide is added into the magnesium oxide separant, the sulfate or sulfide can permeate into a steel coil in the high-temperature annealing process to be combined with the Cu element to form a new CuxS inhibitor, and the inhibition capacity is further improved.

The invention relates to the technical field of electronic packaging and welding, and particularly discloses Ag-Cu-Ti-based composite brazing filler metal and a preparation method and application thereof. The composite material comprises the following components in percentage by weight: 87%-96.5% of Ag-Cu28 alloy powder, 3%-8% of TiH2 and 0.5%-5% of a reinforcing phase, and the reinforcing phase is Ag-coated titanide or ceramic particles. According to the method, the comprehensive welding performance of the brazing filler metal is improved by adopting a method of coating the reinforcing phase with Ag, and meanwhile, the negative influence caused by adding the reinforcing phase is overcome. Aggregation of reinforced phase particles can be reduced through Ag coating, uniform distribution of the reinforced phase fine particles in the brazing filler metal is achieved, and generation of large brittle phases is greatly reduced. And meanwhile, the fluidity of the brazing filler metal is enhanced, the joint filling capacity of the brazing filler metal is improved, and the welding voidage of a connector is effectively reduced. In addition, the Ag coating can avoid the reaction between the reinforcing phase and the Ti element, and the influence of the reinforcing phase on the melting point of the brazing filler metal is reduced.

The invention belongs to the technical field of refined aluminum production, and particularly relates to an anode alloy for producing refined aluminum through a three-layer liquid electrolysis method and a preparation method of the anode alloy. The anode alloy for producing the refined aluminum through the three-layer liquid electrolysis method comprises the following element components in percentage by mass: 38-40% of copper and 60-62% of aluminum, the copper and the aluminum are reasonably matched, the primary crystal temperature is low, the conductivity and the current efficiency are high, layering with electrolyte is facilitated, the phenomena of floating and caking of the alloy are effectively avoided, the electricity unit consumption of refined aluminum liquid is reduced, and the quality of the refined aluminum is improved.

The invention relates to the technical field of alloy materials, in particular to a tungsten-zirconium active material and a preparation method thereof. The tungsten-zirconium active material provided by the invention is prepared from the following elements in percentage by mass through a specific preparation method: 55-85% of W, 10-35% of Zr and 3-30% of other elements, and the other elements are more than two of Ti, Nb, Hf and Mo. The content of W is controlled to be 55-85%, so that the density of the material is 11 g / cm < 3 > or above, the high strength of the material is ensured, and the material has kinetic energy penetration capacity; the content of Zr is 10% or above, and it is guaranteed that the material has certain activity; and the addition of other elements such as Ti, Nb, Hf and Mo inhibits the generation of a W2Zr brittle phase, so that the plasticity of the tungsten-zirconium active material is improved. And by combining with a specific preparation method, the prepared tungsten-zirconium active material has high plasticity while having high strength and high density.

The invention relates to a TiC-SiC reinforced 304 stainless steel composite coating based on high-speed laser cladding and a preparation method of the TiC-SiC reinforced 304 stainless steel composite coating. The composite coating with 304 stainless steel as a metal matrix phase and TiC and SiC as ceramic reinforced phases is prepared on the surface of a steel matrix by adopting a high-speed laser cladding technology. In the cladding process, the TiC ceramic particles keep stable in structure, the SiC ceramic particles are subjected to controllable partial decomposition, the Si element released through decomposition forms a Si enrichment area on the interface of the ceramic particles and the metal matrix, and the C element released through decomposition reacts with the metal matrix to generate a carbide phase. Therefore, the composite coating which is compact in structure and good in interface bonding is obtained and is suitable for surface protection of steel components serving under the working condition of coupling abrasion and corrosion.

The invention provides a high-entropy reinforced gold-based coating as well as a preparation method and application thereof, and relates to the technical field of conductive lubricating materials. The invention provides a high-entropy strengthened gold-based coating. The high-entropy strengthened gold-based coating comprises a Ni transition layer and an Au-FeCoNiCr composite layer, wherein the Ni transition layer and the Au-FeCoNiCr composite layer are sequentially arranged on a copper alloy base material in a stacked mode. The face-centered cubic FeCoNiCr high-entropy alloy formed by Fe, Co, Ni and Cr elements which are obvious in solid solution strengthening of the Au coating and similar in relative atomic mass serves as a doping phase of the gold-based conductive lubricating coating, the grain refinement effect of the coating can be effectively improved, meanwhile, a solid solution structure is formed, and the strength of the coating is enhanced; and moreover, by doping FeCoNiCr, the residual stress of the coating is reduced, the nano hardness and binding force of the coating are improved, and the frictional wear performance of the coating is improved. The high-entropy strengthened gold-based coating provided by the invention has high conductivity and high lubricating property, and is low in cost.

The invention relates to the technical field of metal material structure display, in particular to a DD432 alloy structure display method which comprises the following steps: S1, pretreating the surface of a DD432 alloy sample to obtain a to-be-detected surface; s2, scanning the surface of the sample by adopting a laser-induced plasma spectrum technology, and continuously controlling a laser beam scanning path by utilizing a three-dimensional mobile platform; s3, plasma emission spectrum data are collected, and characteristic spectral lines of Ni, Cr, Co, Mo, Al and Ti elements are identified; s4, converting the spectral data into structure characteristic information of grain size, precipitated phase distribution and grain boundary morphology through a machine learning algorithm; and S5, reconstructing a microstructure image based on the microstructure feature information. According to the method provided by the invention, the LIBS technology is adopted, complicated sample pretreatment is not needed, tissue information can be quickly obtained, and the sample is not damaged.

The invention relates to the technical field of preparation of high-entropy ceramics, and discloses a method for preparing compact high-entropy carbide ceramics, Ti3AlC2, TiC, VC, NbC, TaC and Mo2C are mixed and charged, then sintering is carried out, and the high-entropy carbide ceramics TiVNbTaMoCx are obtained after sintering is completed. In Ti3AlC2, TiC, VC, NbC, TaC and Mo2C, the molar ratio of Ti element to V element to Nb element to Ta element to Mo element is 1: 1: 1: 1: 1. According to the method, the density of the high-entropy carbide ceramic is improved by adopting a simple method, the process is simple and convenient, the production period is short, the raw materials do not need to be subjected to complex pretreatment, the preparation energy consumption and cost are remarkably reduced, and a new way is provided for large-scale preparation of the high-performance high-entropy ceramic material.

The invention discloses a 420MPa-grade steel strip for a high-corrosion-resistance photovoltaic support based on Ti microalloying and low-aluminum high-magnesium coating synergistic reinforcement and a preparation method of the 420MPa-grade steel strip, and relates to the technical field of metal materials. Aiming at the requirements of a distributed photovoltaic bracket, a microalloy component taking a Ti element as a core is designed, and the microalloy component is matched with a low-aluminum high-magnesium micro-titanium coating system to prepare the 420MPa-grade steel belt for the high-corrosion-resistance photovoltaic bracket, which is based on Ti microalloying and low-aluminum high-magnesium coating synergistic reinforcement and has balanced performance and good corrosion resistance. And meanwhile, controlled rolling and controlled cooling and low-temperature annealing are adopted in the preparation process, so that the problem of poor formability of traditional steel is solved, energy consumption is reduced by utilizing a low-temperature rapid plating process, and the production efficiency is improved. While the alloy cost is reduced, balanced optimization of strength-corrosion resistance-forming-welding performance is achieved, and low cost and greenization of a photovoltaic support material are promoted.

The invention relates to the technical field of metal material additive manufacturing, in particular to an additive manufacturing TiAl alloy structure homogenization method. According to the method, 1.5 at.%-2.5 at.% of an Al element is added into a TiAl alloy for compensation, then TiAl alloy powder is prepared, electron beam selective melting printing is carried out, short-time circulating heat treatment is carried out after hot isostatic pressing treatment is carried out, the temperature in the short-time circulating heat treatment process is 5-20 DEG C higher than T alpha / (alpha + gamma), and heat preservation is carried out for 3-10 min; according to the method, the problem of non-uniform structure of the TiAl alloy formed by SEBM is synergistically solved by compensating the content of Al element and a short-time circulating heat treatment process, a uniform and fine lamellar structure can be obtained without a complicated process parameter optimization process, the size of a lamellar cluster is smaller than 100 microns and is far lower than that of a lamellar cluster prepared by conventional heat treatment, and the method is suitable for large-scale production. The room-temperature tensile strength of the alloy is at least improved by 150MPa, and the tensile strength at 750 DEG C is at least improved by 80MPa. The process method is simple and high in adaptability, and can be widely applied to additive manufacturing of the TiAl alloy.

The invention relates to high-superposition low-loss Fe-Si-Al metal soft magnetic powder and a preparation method thereof.The soft magnetic powder is composed of Fe-Si-Al powder and carbonyl iron powder, and the mass ratio of the Fe-Si-Al powder to the carbonyl iron powder is (6-8): (2-4); the Fe-Si-Al powder comprises, by mass, 6%-9% of Si, 4%-6% of Al, 0.5%-1.1% of Cr, 0.2%-1.5% of Ni, 0.6%-2.0% of Mo, 0.5%-0.8% of Ti, 1%-1.4% of Co and the balance Fe. The total content of Cr, Ni, Mo and Ti is 2.3-4.5%; the particle size of the carbonyl iron powder is 13-18 [mu] m. The soft magnetic material prepared from the high-superposition low-loss Fe-Si-Al metal soft magnetic powder can simultaneously give consideration to high superposition and low loss, the effective magnetic conductivity under 1MHz is 95-112, and the power loss under 1MHz / 100mT is 250-280mW / cm < 3 >.