35 results about "Alloy deposition" patented technology

A deformation-driven additive manufacturing method for a low-interfacial-stress aluminum-steel composite structure comprises the steps that an aluminum alloy thin tube is filled with an adding phase with a low thermal expansion coefficient or a negative thermal expansion coefficient and aluminum-silicon powder used for enhancing the thermal plasticizing fluidity of a raw material wire according to the proportion, and after drying treatment, the raw material wire for adjusting the thermal expansion coefficient is manufactured; a continuous wire feeding friction stir additive manufacturing method is adopted, aluminum alloy raw material wires and adjusting raw material wires are synchronously fed according to the rate proportion changing layer by layer, deposition is driven through deformation, and an aluminum alloy composite transition layer with additive phase components changing in a gradient mode is formed; after the aluminum alloy composite material transition layer is completely prepared, the continuous wire feeding friction stir additive manufacturing method is continuously adopted, and continuous deposition is conducted on the aluminum alloy composite material transition layer to form an aluminum alloy deposition layer; and after deposition manufacturing of the component is completed, subtractive machining treatment is carried out, and a final product is obtained. The invention relates to the technical field of dissimilar material additive manufacturing.

The embodiment of the invention discloses a recycling method of ITO waste. Comprising the steps that an ITO waste target or ITO powder generated in the cutting process serves as an anode, an inert metal electrode serves as a cathode, 10-30 wt% of sulfuric acid and 1-10 vol% of hydrogen peroxide serve as electrolyte, and the ITO waste target or the ITO powder serves as the anode, the inert metal electrode and the electrolyte are arranged in an electrolytic tank to form an electrolysis system; heating to a target temperature in the water bath kettle, then carrying out constant-current electrolysis, reacting the ITO waste material with the electrolyte to generate In < 3 + > and Sn < 2 + >, reducing the generated In < 3 + > and Sn < 2 + > into metal tin and metal indium on the cathode, and forming an indium-tin alloy which is deposited on the cathode; the ITO waste material reacts with an electrolyte to generate Sn < 2 + > and In < 3 + > by adopting an electrolysis mode in an aqueous solution, and the Sn < 2 + > and the In < 3 + > are further electrolyzed and deposited at a cathode to form an indium-tin alloy; the hydrogen peroxide in the electrolyte promotes the efficient dissolution of indium and tin in the ITO. The method is high in comprehensive recovery efficiency of indium and tin, simple in operation process, low in energy consumption, environment-friendly and good in economical efficiency.

The invention relates to the technical field of shield tunneling machines, and particularly discloses a shield hobbing cutter ring and a remanufacturing method thereof. According to the method, the iron-based alloy powder serves as a main body, the modified powder is added as an auxiliary, the remanufactured alloy powder is obtained, the alloy deposition layer is formed on the surface of the cutter ring body through the remanufactured alloy powder, and remanufacturing machining of the shield hob cutter ring is completed. Under the synergistic effect of the components of the modified powder, the alloy deposition layer can have good hardness and wear resistance, the defects of iron-based self-fluxing alloy are overcome, the defects of the remanufactured and repaired cutter ring in the tunneling process are reduced, and various extreme service conditions can be fully dealt with.

The application discloses a kind of heat insulation films and preparation methods thereof.The heat insulation film includes substrate layer, hard coating layer, first dielectric layer, first barrier layer, noble metal layer, second barrier layer, second dielectric layer and adhesive layer from inside to outside.The first dielectric layer is aluminum-doped zinc oxide, the noble metal layer is a silver-gold alloy layer with controllable thickness, and has a gradient distribution of gold content in the thickness direction;The second dielectric layer is formed into a layered composite structure by alternately stacking titanium dioxide and hafnium oxide.The preparation method includes substrate cleaning and surface activation, hard coating layer coating and curing, magnetron sputtering of dielectric layer and barrier layer, alloying deposition of noble metal layer, alternating sputtering of layered composite dielectric, and adhesive layer coating and compounding.The application realizes excellent infrared barrier performance while maintaining high visible light transmittance through the synergistic design of multi-layer structure and components, significantly improves the stability in a humid and hot environment, and reduces the risk of performance degradation.

The invention relates to the technical field of etching waste liquid treatment, in particular to an acid etching waste liquid comprehensive treatment device which comprises a base, an etching tank is fixedly connected to the upper end of the base, and two sets of symmetrical first electric telescopic rods are installed at the upper end of the base; the upper ends of output shafts of the two first electric telescopic rods are jointly and fixedly connected with a first mounting plate, the lower end of the first mounting plate is provided with a collecting mechanism used for filtering etching liquid, and the outer sides of the output shafts of the first electric telescopic rods are fixedly connected with a second mounting plate; through the meshing design of a titanium alloy coating threaded electrode rod of an electrode box and a second sleeve, automatic cleaning of the electrode rod in the electrolysis process is achieved, and when a second electric telescopic rod drives the second sleeve to move up and down along the electrode rod, a lower end scraping strip is driven to rotate to clean cobalt beryllium alloy deposition, titanium hydroxyl colloid and other mixed dirt on the outer wall of the electrode rod; and the stable electrolysis efficiency is maintained.

The invention discloses a stirring friction additive forming process of an alloy heterogeneous laminated component, and belongs to the technical field of metal solid phase additive manufacturing. A substrate material and an additive raw material are selected; the hollow stirring head is moved to a preset position above the substrate material, and the thickness of an additive layer is set to be h; the additive raw material penetrates through the hollow stirring head to be fixed, the additive raw material synchronously rotates along with the hollow stirring head and is fed towards the substrate material under driving of axial force, and the end of the additive raw material makes contact with the surface of the substrate material and generates friction heat; after the end of the additive raw material is heated and subjected to thermoplastic softening, the feeding speed is increased, and a cavity between the bottom of the hollow stirring head and the base is fully filled with the softened material; and after filling saturation, moving along a set path according to a set moving speed for continuous deposition to form an additive alloy deposition layer attached to the substrate material. According to the method, defect-free heterogeneous metallurgical bonding is achieved, the gradient structure of hard layer bearing and soft layer energy absorption is finally formed, high strength and high ductility are achieved, and the method is suitable for manufacturing of high-performance light-weight components in the fields of aerospace and the like.

The invention discloses a friction plug welding stopper rod based on friction stir additive and a preparation method and application thereof.The friction plug welding stopper rod comprises a connecting section, a transition section and a welding section, the connecting section, the transition section and the welding section are sequentially connected, and the friction plug welding stopper rod is manufactured through a friction stir additive manufacturing method; the connecting section, the transition section and the welding section are respectively formed by a substrate used in the friction stir additive manufacturing method, the formed multi-layer composite material deposition layer and the formed multi-layer aluminum alloy deposition layer. The base plate, the multiple composite material deposition layers and the multiple aluminum alloy deposition layers can be in metallurgical bonding in sequence from bottom to top to form a deposition component, and after solid solution-aging composite heat treatment is conducted on the deposition component, the friction plug welding stopper rod is obtained through machining. According to the method, the structure of the friction plug welding stopper rod can be strengthened, so that the friction plug welding stopper rod has higher strength and heat stability in a geometric mutation area, and the fracture resistance and fatigue resistance are remarkably improved.

The invention relates to a device and a method for manufacturing a heterogeneous alloy structure through ultrasonic regulation and control electron beam additive manufacturing, in particular to an electron beam additive manufacturing device for feeding wires through a main shaft and a shaft side and regulating and controlling element diffusion and phase generation in combination with an ultrasonic field effect and a forming method of the electron beam additive manufacturing device. According to the electron beam + double-wire + ultrasonic synergetic additive manufacturing method and system, in the wire bundle coaxial cold cathode electron beam fuse additive manufacturing process, an ultrasonic auxiliary system is introduced to act on a forming base plate, dynamic regulation and control over the heterogeneous alloy element mixing behavior and the structure evolution process in a molten pool are achieved, and therefore the mechanical performance of the molten pool is improved. The problems of coarse grains, uneven structures and performance fluctuation in the heterogeneous alloy deposition process are solved, structure refinement and component homogenization are achieved, and the overall service performance of a deposition component is improved.

The invention belongs to the technical field of high-performance aluminum alloy surface functional coatings, and discloses an aluminum-based composite hydrophilic coating for aviation and a preparation method of the aluminum-based composite hydrophilic coating for aviation. Preparing an aluminum alloy deposition layer on the roughened surface of the metal substrate through a laser-assisted cold spraying method; carrying out rough polishing treatment on the aluminum alloy deposition layer; and the polished aluminum alloy deposition layer is subjected to anodic oxidation treatment and hole sealing treatment, and the aluminum-based composite hydrophilic coating for aviation is obtained. According to the method, laser-assisted heating is used for improving interface bonding of the coating and a base body and bonding of particles in the coating, the deposition efficiency and bonding strength of the coating are improved, the technical advantages of anodic oxidation and the post-treatment technology are combined, and the service requirement of an existing hydrophilic coating is met.

The utility model relates to the technical field of metal processing devices, and discloses a metal material surface alloying deposition device which comprises a working rack and a front workbench, a grinding device is arranged at the left end of the working rack right facing the upper portion of a base, a laser device is arranged on the right side of the grinding device, and a spraying device is arranged on the right side of the laser device. And a high-temperature calcining device is arranged on the right side of the spraying device. The surface of a metal material can be polished in advance, the stability of alloy layer deposition is improved, a corresponding alloy layer can be formed on the surface of the metal material in cooperation with the laser device and the spraying device, the alloy layer is calcined in cooperation with the high-end calcining device, and then the alloy layer is subjected to high-temperature curing treatment through the heating and fixing device; a deposited alloy layer is formed on the surface of the ground metal material, the efficiency and quality of metal alloying treatment can be guaranteed, one-time efficient treatment of the metal material is achieved in cooperation with a cooling device, and the material treatment efficiency is improved.

The invention discloses a device and a method for inhibiting electric arc additive manufacturing structure segregation of an iron-copper binary refractory gold wire, and belongs to the field of electric arc additive manufacturing of wires. According to the method, powder adding, porous stirring and low-temperature rapid cooling synergism are adopted, and segregation is inhibited from the combined action of three aspects of thermodynamics, dynamics and the solidification process. The method comprises the steps that Fe wires and Cu wires serve as independent electrodes to be fed into a molten pool, alloying is achieved in an electric arc molten pool by accurately controlling the wire feeding speed, and meanwhile nickel-titanium carbide composite powder is fed into the molten pool under the condition that the molten pool is stirred through a porous stirring head; when a welding system starts to move, a gas-solid mixed CO2 forced cooling device is started immediately, gas-solid mixed CO2 is directly sprayed to the surface of a deposition layer close to the rear portion of a molten pool, rapid cooling is achieved, layer-by-layer accumulation is conducted, and FeCu alloy electric arc additive manufacturing is achieved. The alloy deposition layer is uniform in structure and fine in grain, and the mechanical property can be greatly improved.

The invention provides a method for manufacturing a nickel-based alloy through TIG cold welding additive manufacturing. The method specifically comprises the steps that firstly, the surface of a base material is treated; the two ends of the nickel-based alloy welding wire are fixed to the base plate; then pulse current and pulse time are set on the precise cold welding machine; the TIG welding gun is powered on to ignite an electric arc to conduct electric arc remelting operation, the TIG welding gun moves along the nickel-based alloy welding wire, a series of continuous deposition points are formed on the nickel-based alloy welding wire, and single-pass nickel-based alloy deposition is completed; and repeating the single-pass nickel-based alloy deposition process to finish multi-pass nickel-based alloy deposition. And layer-by-layer stacking deposition is carried out until manufacturing of the nickel-based alloy deposition layers with the specified number is completed. A nickel-based alloy deposition layer obtained after TIG cold welding and material increase are completed is smooth in surface, free of obvious cracks, good in compactness, tight in interlayer combination and free of layering or separation phenomena; the mechanical property of the nickel-based alloy is improved, a high-strength metal structure is obtained, and the bearing capacity of the nickel-based alloy under high load is enhanced.

The invention discloses a friction stir additive manufacturing method for an aluminum steel composite structure, relates to the field of heterogeneous material connection, aims to solve the problems of large interface stress and low joint strength in aluminum steel composite structure manufacturing, and comprises the following steps: carrying out mechanical polishing and cleaning on the surface of a steel plate before additive manufacturing; preparing a mechanical interlocking structure on the to-be-compounded surface; electrically driven silicon-magnesium co-permeation is carried out on the surface of the steel plate with the mechanical interlocking structure; a stirring friction additive manufacturing method is adopted, and multi-channel and multi-layer aluminum alloy deposition is carried out to reach the needed height; and the aluminum-steel composite structure transition joint is obtained through machining subtractive manufacturing. According to the method, through interface mechanical interlocking and silicon-magnesium co-penetration metallurgical connection, interface residual stress caused by difference of thermal expansion coefficients of the aluminum steel is relieved, excessive diffusion between the aluminum steel is inhibited, and interface brittleness caused by formation of excessive intermetallic compounds is avoided. The method not only can be applied to manufacturing of the aluminum-steel composite structure, but also can be popularized and applied to reliable manufacturing of an aluminum-titanium composite structure, a magnesium-steel composite structure and the like.

The present invention belongs to the technical field of high-purity nickel strip processing and preparation for the electronics industry, and discloses a method for preparing a wear-resistant cobalt-based alloy mold for punching metal nickel strips. The inventive method uses vacuum induction melting of the cobalt-based alloy, and then uses high-purity nitrogen as the atomization deposition medium to perform double-scanning atomization deposition. After the double-scanning atomization deposition is completed, the cobalt-based alloy deposition blank is raised to the atomization nozzle, and heated nitrogen is blown through the nozzle of the guide tube to the top center of the cobalt-based alloy columnar deposition blank. At the same time, the deposition blank is slowly lowered at a speed of 10 to 15 mm / min. When the surface temperature of the blank is lower than 800°C, the blowing is stopped, and the blank is cooled with the furnace. The obtained deposition blank is heated, forged, and machined to obtain a cobalt-based alloy mold. The method of the present invention helps to improve the wear resistance and service life of the pure nickel strip punching die, improve product quality, and meet the needs of the electronics, energy batteries and other fields.

The application relates to an electrochemical etching method of a porous electrode and an electrolytic water electrode. The electrochemical etching method comprises the following steps: using a nickel-iron metal salt containing a pore-forming agent as an electroplating solution, using a nickel mesh as a working electrode and a platinum sheet as a counter electrode, performing constant-current electrodeposition in the electroplating solution, ensuring that the deposition rate remains unchanged, obtaining a nickel mesh material loaded with a porous nickel-iron alloy deposition layer; cleaning and drying; using a high-temperature furnace to perform fast firing treatment to improve the stability of the catalyst layer; in a two-electrode system, using prepared hydrochloric acid as an etching solution, using the obtained electrode as a working electrode and a platinum sheet as a counter electrode, performing constant-current etching, ensuring that the etching rate remains unchanged, and obtaining a porous electrode finished product after etching. Compared with the prior art, the application solves the problems of insufficient catalytic area of a traditional porous electrode and poor bubble release structure on the surface; is suitable for industrial large-scale production, has a simple preparation process, good repeat stability and low cost.

The embodiment of the invention discloses a method for recycling ITO waste powder, which comprises the following steps of: arranging an ITO waste target serving as an anode, an inert metal electrode serving as a cathode and NaOH, KOH or NaOH-KOH eutectic salt serving as a molten salt electrolyte in an electrolytic tank to form an electrolysis system; iTO waste powder is laid in the electrolytic tank, and the anode and the cathode are located above the ITO waste powder; the molten salt electrolyte is heated to the electrolysis temperature for constant-current electrolysis, the ITO waste powder reacts with the molten electrolyte to generate indate and stannate, the generated indate and stannate are reduced into metal tin and metal indium on the cathode, and indium-tin alloy is formed and deposited on the cathode; the ITO waste powder reacts with molten alkali to generate stannate and indate by adopting an electrolysis mode in a molten alkali environment, and the stannate and the indate are further electrolyzed and deposited at a cathode, so that the efficient dissolution of indium and tin in the waste ITO powder is realized. The method is high in comprehensive recovery efficiency of indium and tin, simple in operation process, low in energy consumption, environment-friendly and good in economical efficiency.

The invention relates to a method for growing a ferroelectric layer (11) of a rhombohedral ferroelectric alloy on a substrate (10), wherein a growth sublayer (21) formed of a stack of crystalline sheets linked together by van der Waals bonds is arranged on the substrate, and then the rhombohedral crystalline ferroelectric alloy in the form of crystalline grains (12) is deposited onto the growth sublayer at a suitable temperature with a component that segregates between the crystalline grains. Figure for the abstract: Fig. 1.

The invention relates to a method for forming high-toughness metal through yttrium-carbon dual-element composite strengthening selective laser melting, which comprises the following steps that yttrium-carbon dual-element composite nickel-based alloy powder is prepared, and the nickel-based alloy powder comprises the following elements in percentage by mass: 0.4-0.6% of carbon and 0.03-0.1% of yttrium; and the nickel-based alloy powder is printed through a selective laser melting method, and the yttrium-carbon dual-element composite nickel-based alloy part is prepared. According to the method, melt purification, structure refinement and dispersion strengthening are achieved in situ in the SLM forming process through Y-C composite modification, so that a high-performance nickel-based alloy part with the tensile strength exceeding the heat treatment state forge piece standard is directly obtained in a sedimentary state, and the problems that additive manufacturing nickel-based alloy is insufficient in sedimentary state performance and seriously depends on complex aftertreatment are effectively solved.

The invention discloses a corrosion and wear resistant high-entropy alloy coating and a preparation method thereof, the high-entropy alloy coating is arranged on the surface of a matrix, and a Cr diffusion layer, a TiVCr medium-entropy alloy intermediate layer, a TiVCrZrNb high-entropy alloy diffusion layer and a TiVCrZrNb high-entropy alloy deposition layer are sequentially arranged on the surface of the matrix. The preparation method comprises the following steps that in a vacuum environment, the Cr diffusion layer and the TiVCr medium-entropy alloy middle layer are sequentially prepared on the surface of a pretreated base body through a magnetron sputtering method; and a TiVCrZrNb high-entropy alloy diffusion layer and a TiVCrZrNb high-entropy alloy deposition layer are sequentially prepared on the surface of the TiVCr medium-entropy alloy intermediate layer through a double glow plasma surface metallurgy method. The obtained high-entropy alloy coating is good in corrosion resistance and good in wear resistance; and the interface bonding strength between the coatings and between the coating and the matrix is obviously enhanced, and the overall stability of the coating system is greatly improved.

The invention relates to the technical field of eutectic high-entropy alloys, in particular to a Ti modified high-entropy alloy and a laser additive manufacturing method thereof, and the method comprises the following steps: mixing AlCoCrFeNi2.1 powder with Ti powder to obtain mixed powder, designing a three-dimensional digital model and a layered discrete model, and obtaining powder parameters and scanning data; data are imported into 3D printing software, printing parameters are set, after a base plate is preheated and remelted through laser directional energy deposition equipment, mixed powder is fused and deposited on the base plate through a nozzle, layer-by-layer printing is conducted in sequence, and the Ti modified high-entropy alloy is obtained. According to the method, the phenomena of cracking and warping in the alloy deposition process after Ti element is introduced in the laser powder bed melting process are successfully solved through the laser directional energy deposition technology, and the method has important significance for developing the eutectic high-entropy alloy with excellent mechanical properties.

The present application relates to a kind of gradient hole structure's self-supporting alkaline electrolytic water hydrogen production electrode and its preparation method and application, wherein the preparation method includes: A) in two electrode system, two nickel iron metal salt containing different gas production additive concentration are used as electroplating solution, nickel mesh is used as working electrode, platinum sheet is used as counter electrode, electrodeposition is carried out in two kinds of electroplating solution in turn, and make that electrodeposition is while current density is uniformly increased, obtain the nickel mesh material of gradient porous nickel iron alloy deposition layer supported;B) the nickel mesh material obtained in step A is washed, dried, and the gradient hole structure's self-supporting alkaline electrolytic water hydrogen production electrode is obtained.Compared with prior art, the gradient porous nickel iron deposition layer of composite on nickel mesh substrate material is prepared using electrodeposition method in the present application, and gradient porous structure greatly improves the real surface area of electrode, and promotes bubble discharge simultaneously.

Sliding element (1), comprising: a back sheet (10) made of steel as the outermost layer of the sliding element (1), a sintered lining (11) consisting of Cu, Bi and Sn, and an electroplated cover layer (12) as a sliding surface, which is formed from an alloy deposition film of Bi and Sb, wherein the cover layer (12) consists of Bi, Sb and unavoidable impurities, and wherein the Sb concentration on the surface of the cover layer (12) is 0.92 wt% or more and 2.1 wt% or less, wherein the cover layer (12) has a concentration gradient, wherein the Sb concentration increases as the depth or distance from the surface of the cover layer (12) increases.

The invention discloses an aluminum alloy deposition additive forming method and system based on metal extrusion, and belongs to the technical field of metal additive forming. According to the method, an aluminum ingot is adopted as a raw material and pushed into a threaded pipe which is heated to 5 DEG C above the melting point through an extrusion rod, and after melting, components are made to be uniform through rotary stirring; and the nozzle moves in an XY plane according to a preset path, molten metal is extruded and deposited on the preheated substrate, and after each layer of deposition, the substrate descends by one layer of height to be formed layer by layer. The extrusion technology and the fused deposition principle are combined, limitation of traditional FDM materials is broken through, aluminum ingots are directly used for replacing wires, and energy consumption is reduced; a nozzle lifting and temperature control system is replaced by substrate preheating and Z-direction substrate moving, workpiece deformation is reduced, and the surface quality and density are improved. The method has the advantages of high efficiency, low cost, environmental protection and suitability for mass production.

The invention discloses a method for preparing die-casting aluminum alloy through coordinated regulation and control of component optimization and a heat preservation process, and relates to the field of die-casting aluminum alloy materials and processes. The invention relates to a die-casting aluminum alloy sediment inhibition method through cooperative regulation and control of alloy component optimization and an aluminum water heat preservation process. According to the technology, the melt cleanliness is remarkably improved, the hydrogen content and non-metallic inclusions are reduced, the microscopic structure is refined, and generation of a coarse sedimentary phase is inhibited, so that the pore defect level of a casting is reduced, and the relative defect rate of sediments is reduced. The technological parameters of the method can be directly matched with an existing die-casting production line, and high industrial popularization performance is achieved.

The invention discloses a method for laser double-wire additive manufacturing of an aluminum / magnesium bimetallic material based on dynamic heat input, and relates to the technical field of metal material additive manufacturing. The method comprises the following steps that an aluminum alloy welding wire and a magnesium alloy welding wire are adopted as deposition materials, aluminum alloy and magnesium alloy are sequentially deposited on the surface of a base plate through double wire feeding mechanisms, and the aluminum / magnesium bimetallic material is obtained; layered dynamic heat input parameter control is independently carried out in the aluminum alloy deposition process and the magnesium alloy deposition process; the heat input parameters comprise laser power and wire feeding speed. The manufacturing process of double-wire independent feeding and dynamic heat input control is adopted, and the manufacturing efficiency can be improved through double-wire independent feeding; dynamic heat input control can inhibit centralized generation of brittle intermetallic compounds on the interface from the process level, and the interface bonding strength is improved. The aluminum / magnesium bimetallic material prepared by the method disclosed by the invention has good interface bonding strength and excellent comprehensive mechanical properties.

The application discloses a kind of based on dynamic heat input's laser double-wire additive manufacturing aluminum / magnesium bimetallic material method, it is related to metal material additive manufacturing technical field.The method includes the following steps: using aluminum alloy welding wire and magnesium alloy welding wire as deposition material, aluminum alloy and magnesium alloy are sequentially deposited on the surface of substrate by double-wire feeding mechanism, and aluminum / magnesium bimetallic material is obtained;Aluminum alloy deposition process and magnesium alloy deposition process are independently carried out layering dynamic heat input parameter control respectively;The heat input parameter includes laser power and wire feeding speed.The application uses the manufacturing process of "double-wire independent feeding+dynamic heat input control", wherein, double-wire independent feeding can improve manufacturing efficiency;Dynamic heat input control can inhibit the concentrated generation of interface brittle intermetallic compound from the process level, and improve interface bonding strength.The aluminum / magnesium bimetallic material prepared by the method of the application has good interface bonding strength and excellent comprehensive mechanical properties.

The application discloses a method for eliminating anisotropy of a microstructure and performance of additive manufacturing TiAl alloy, and relates to the field of additive manufacturing.The method comprises the following steps: step 1, depositing Ti48Al alloy by adopting an electric arc additive manufacturing technology to obtain a Ti48Al alloy deposition layer; step 2, performing in-situ heat treatment on the deposition layer, that is, performing re-scanning treatment on the deposition layer without adding deposition materials; and step 3, after the re-scanning treatment, continuously repeating steps 1 and 2 to deposit Ti48Al alloy, so that Ti48Al alloy with uniform full lamellar crystal group microstructure is obtained.The method can not only eliminate the non-uniformity and anisotropy of the microstructure of the additive manufacturing TiAl alloy, but also obtain the Ti48Al alloy with fine full lamellar crystal group microstructure and improve the mechanical performance of the material.

This invention relates to the field of alloy material composition design and preparation technology, and particularly to a multi-component alloy deposition design method. Specifically, it includes the following steps: (1) proposing an alloy composition design model based on multi-target confocal magnetron sputtering technology; (2) based on the alloy composition design model, calculating the deposition rate, sputtering power, and sputtering time of each component according to the accurate multi-alloy target composition required for the study; (3) stacking and integrating alloy sublayers with different design compositions onto a single sample based on the above steps. The method provided by this invention can achieve accurate prediction and design of alloy composition, with a large controllable range, from 0-100 at.% and a prediction deviation of less than 5 at.%; it can achieve high-throughput preparation of alloy samples by combining alloy sublayers with multiple compositions onto a single sample through a single experimental procedure.

The application discloses a method for preparing pressure casting aluminum alloy by optimizing components and cooperating with heat preservation process, and relates to the field of pressure casting aluminum alloy materials and processes. The method is a pressure casting aluminum alloy deposit inhibition method by optimizing alloy components and cooperating with aluminum water heat preservation process. The technology significantly improves the melt cleanliness, reduces the hydrogen content and non-metallic inclusions, refines the microstructure and inhibits the generation of coarse deposition phases, so that the air hole defect level of the castings is reduced, and the deposit related defect rate is reduced. The process parameters of the method can be directly adapted to the existing pressure casting production line, and the method has high industrial promotion.

The invention relates to the technical field of high-temperature alloy laser cladding repair manufacturing, and discloses a heat treatment process for regulating and controlling the structure and performance of an IN 625 alloy deposition layer. According to the method, the IN 625 alloy laser deposition layer is subjected to continuous heat treatment under a specific process, so that the deposition chromatography phase form and distribution and microhardness regulation and control are effectively realized, and a technical reference is provided for related employees to design and optimize the heat treatment process of the IN 625 alloy deposition layer.