1424 results about "Ti element" patented technology

The invention discloses a nickel-based corrosion-resistant alloy and a preparation method thereof, and relates to the technical field of alloy preparation, and the nickel-based corrosion-resistant alloy comprises the following elements by weight: 22-25 wt% of Cr; 8 to 10 weight percent of Mo; 1 to 3 wt% of Fe; 1.8 to 3.5 wt% of Cu; 0.5 to 1.2 wt% of Al; 0.3 to 0.8 wt% of Ti; 1.5 to 3.5 wt% of W; b: 0.002 wt% to 0.01 wt%; y: 0.02 to 0.12 wt%; ce: 0.02 to 0.07 wt%; and Ni: the balance. The corrosion-resistant nickel-based alloy has the effect of improving the corrosion resistance of the nickel-based alloy by combining multi-element alloying and a fine preparation process.

The invention belongs to the technical field of titanium alloy materials and additive manufacturing, and relates to a high-performance titanium-based composite material based on additive manufacturing and a preparation method of the high-performance titanium-based composite material. The preparation method comprises the following steps that titanium alloy powder subjected to vacuum drying treatment and titanium-coated reinforced phase nanoparticles are added into a ball mill to be subjected to ball milling treatment in the inert gas atmosphere, and evenly-mixed composite powder is obtained; and after the composite powder in the first step is subjected to vacuum drying, the composite powder is evenly laid on a forming base plate through additive manufacturing equipment, the composite powder is molten layer by layer through a heat source, and the high-performance titanium-based composite material is obtained after solidification. According to the titanium-based composite material and the preparation method thereof, TiB generated by the in-situ reaction of the B element in the titanium-coated reinforced phase nanoparticles and the Ti element in selective laser melting forming is adopted, the TiB is uniformly dispersed and distributed in a titanium alloy matrix, the prepared titanium-based composite material has good density, the strength, hardness and other properties of the material are obviously improved, and the comprehensive mechanical property is excellent.

The invention discloses a neodymium-iron-boron magnet, which comprises main phase crystal grains, a thin layer crystal boundary phase and a triangular region crystal boundary phase, and is characterized in that the neodymium-iron-boron magnet comprises 28 to 33 weight percent of R, 0.84 to 0.94 weight percent of B, 0.05 to 1 weight percent of Co, 0.05 to 0.55 weight percent of Cu, 0.3 to 0.6 weight percent of Ga, 0 to 0.55 weight percent of M2, 0.1 to 0.6 weight percent of M3, 66 to 70 weight percent of Fe and the balance of Fe, wherein R is a rare earth element and at least comprises PrNd; the triangular region grain boundary phase comprises an R6T13M1 phase, the element M in the R6T13M1 phase is selected from any two or more elements of Al, Cu, Ga, Ti, Sn and / or Zr, and the element T comprises Fe and / or Co; the sum of the areas of the R6T13M1 phases in the microscopic structure cross section of the neodymium-iron-boron magnet accounts for 5.2%-8.4% of the area of the microscopic structure cross section. The rare earth permanent magnet with high residual magnetism, high coercive force and good squareness consistency is obtained under the condition that no heavy rare earth is added or a small amount of heavy rare earth is added.

The invention provides a high-capacity hydrogen storage alloy and a preparation method thereof. According to the method, the ferrovanadium alloy serves as a base body, rare earth is adopted for refining the ferrovanadium alloy, metal elements are doped, and the heat treatment process is further optimized. The hydrogen storage alloy comprises the following elements: TiaCrb (FeV + zwt.% RE) xMy, FeV represents a vanadium-iron alloy; rE represents a rare earth element, and z represents a doping amount; m comprises at least one element of Mn, Co, Ni, Cu, Zr, Zn, Al and Mo; a, b, x and y respectively represent the number of atoms of Ti, Cr, FeV and M, a + b + x + y = 100, 10 < = a < = 60, 0 < = b < = 70, 10 < = x < = 70, 0 < = y < = 10, and 0 < = z < = 10. The maximum hydrogen absorption amount of the prepared hydrogen storage alloy is 3.3 wt% or above at the temperature of 25 DEG C and the pressure of 9 MPa; the effective hydrogen absorption amount is more than 2wt%.

The invention provides an aluminum alloy brazing composite material, an Al-Zn-based pre-buried brazing flux plate blank and a preparation method of the Al-Zn-based pre-buried brazing flux plate blank and relates to the technical field of aluminum alloys, and the aluminum alloy brazing composite material sequentially comprises a non-brazing filler metal layer and a brazing filler metal layer; the non-brazing filler metal layer sequentially comprises a core layer and an Al-Zn-based pre-embedded brazing flux layer, and the Al-Zn-based pre-embedded brazing flux layer is arranged close to the brazing filler metal layer; the Al-Zn-based pre-embedded brazing flux layer comprises an Al-Zn alloy and a fluorine-containing brazing flux; the Al-Zn series alloy comprises 1-12 wt% of Zn element according to the mass fraction, the Al-Zn based pre-buried brazing flux layer has dislocation, and the dislocation density of the Al-Zn based pre-buried brazing flux layer is 2.5-4.0 * 10 < 14 > / m < 2 >; and the core layer and the Al-Zn-based pre-embedded brazing flux layer cannot be melted during brazing. The problem that the yield strength after welding is insufficient due to the fact that the proportion of the core layer in the aluminum alloy brazing composite material is reduced can be solved.

The invention discloses a high-entropy nanoparticle catalytic material with a metal atom shell structure and a preparation method of the high-entropy nanoparticle catalytic material, and belongs to the technical field of preparation of catalytic materials. The preparation method comprises the following steps: dispersing a metal salt and a nanofiber precursor in an organic solvent, and carrying out electrostatic spinning to obtain a nanofiber membrane; and then calcining and pre-oxidizing the nanofiber membrane, and then carbonizing and calcining to obtain the nanofiber membrane. Wherein the selection principle of the metal salt is as follows: (n-1)-(n-2) metals are selected as an alloy substrate, and the sum of the mixing enthalpy of elements of the alloy substrate is not greater than-5kJ mol <-1 >; one or two metal elements serve as a precipitated phase, and the sum of the mixing enthalpy of the metal elements of the precipitated phase and the elements of the alloy substrate is larger than 20 kJ mol <-1 >; the high-entropy nanoparticle catalytic material obtained by the method shows relatively high catalytic activity and stability, and the method has wide universality.

The invention belongs to the technical field of preparation of hydrogen sulfide stress corrosion resistant oil well pipes, and relates to a 125ksi steel grade hydrogen sulfide stress corrosion resistant oil well pipe material suitable for a normal temperature environment containing 1MPa H2S and a preparation method of the 125ksi steel grade hydrogen sulfide stress corrosion resistant oil well pipe material. B, Ti, V and Nb elements are added, and the contents of Si, Mn and Ni elements, the Cr / Mo ratio and the sum of Nb, V and Ti in steel are controlled; the refined 100% sorbite structure, various compounds and microalloying are obtained through the processes of pure steel smelting, forging, controlled rolling and secondary heat treatment, so that high strength and high toughness in the 125 ksi range are obtained, and meanwhile the hydrogen sulfide corrosion resistance is high. The pipe product obtained by the process method disclosed by the invention has no corrosion cracking phenomenon after being subjected to a corrosion resistance test under the partial pressure of hydrogen sulfide of 1MPa.

The invention provides a high-strength and high-conductivity copper alloy with a fine grain structure and a preparation method of the high-strength and high-conductivity copper alloy, and belongs to the technical field of copper alloy preparation. The copper alloy comprises the following elements in percentage by mass: 2.0-12.0 wt.% of Ni, 0.4-3.0 wt.% of Si, less than or equal to 1.0 wt.% of Zn, less than or equal to 5.0 wt.% of Ti, less than or equal to 1.0 wt.% of B and the balance of Cu and inevitable impurities. According to the method, the heat treatment process is adjusted, generation of Ni16Ti6Si7 and TiB2 phases is promoted through introduction of Ti and B elements, micron-sized particles can serve as nucleation sites and pinning grain boundaries in the heat deformation process, and grain refinement is promoted. The high-strength and high-conductivity copper alloy with a fine grain structure is obtained by changing the content of Ti and B elements in the copper alloy and regulating and controlling the proportion of Ni16Ti6Si7, a TiB2 micron phase and a Ni2Si nano phase.

The invention discloses a nickel-magnesium intermediate alloy for a high-temperature alloy and a preparation method thereof.The nickel-magnesium intermediate alloy is composed of, by mass, 4%-50% of Mg and the balance Ni and inevitable impurities, and the method comprises the steps that firstly, electrolytic nickel and magnesium ingot raw materials are selected, cut and polished, and ingredients are calculated, weighed and subpackaged; 2, the raw materials are put into a crucible of an induction melting furnace to be smelted, and alloy melt is obtained; and thirdly, a steam suction filtration system is started, the alloy melt is poured into a cast iron ingot mold, and the nickel-magnesium intermediate alloy ingot is obtained after cooling. A proper amount of inert gas is introduced in the vacuum induction smelting process, smelting and pouring in a micro-negative pressure state are guaranteed, impurity introduction in the smelting and pouring processes is reduced by controlling smelting process parameters, meanwhile, gasification loss of the magnesium element is reduced, and the high-strength magnesium alloy with uniform components and high strength is obtained. The nickel-magnesium intermediate alloy is high in cleanliness and low in content of harmful gas elements and inclusions, and is suitable for the field of downstream high-temperature alloys.

The invention belongs to the field of stainless steel. Specifically, the invention relates to soft magnetic stainless steel containing Cr, Cu, Mo, Nb and rare earth elements, and a soft magnetic stainless steel profile and a product prepared from the soft magnetic stainless steel. The Cu element contained in the soft magnetic stainless steel can be separated out to form nano Cu when the soft magnetic stainless steel is subjected to aging treatment, so that the mechanical property of the obtained soft magnetic stainless steel profile can be effectively improved, and the soft magnetic stainless steel profile has excellent low-temperature toughness and soft magnetic property; in addition, microalloy precipitation is optimized through Nb and rare earth element compounding, so that the proper fine grain size is obtained, and the soft magnetic stainless steel profile has excellent low-temperature toughness; and meanwhile, the tensile strength of the soft magnetic stainless steel profile is improved through the solution strengthening effect of Mo, and the corrosion resistance of the soft magnetic stainless steel profile is improved. The soft magnetic stainless steel profile can be effectively applied to electromagnetic valves and related products which serve in low-temperature media and require certain strength, and has good popularization prospects and application value.

The invention belongs to the technical field of single crystal alloys, and particularly relates to a Ni3Al-based single crystal alloy and a preparation method and application thereof. The Ni3Al-based single crystal alloy provided by the invention comprises the following element components in percentage by mass: 7.0 to 8.2 wt.% of Al, 2.4 to 3.8 wt.% of Ta, 7.9 to 9.8 wt.% of Mo, 1.5 to 3.6 wt.% of Re, 0.9 to 1.8 wt.% of Cr and the balance of Ni, the Ni3Al-based single crystal alloy comprises a gamma '-Ni3Al phase and a gamma-Ni phase. According to the invention, the contents of Al and Ta elements are increased, so that a gamma '-Ni3Al phase and a gamma-Ni phase are formed in the alloy; mo is used for replacing part of Re, the temperature bearing capacity of the single crystal alloy is improved through high-mismatch-degree alloying design, meanwhile, the cost of the alloy is remarkably reduced, and the endurance life is longer than 150 h under the conditions of 1200 DEG C and 80 MPa.

The invention provides an anodic oxidation die-casting aluminum alloy and a preparation method thereof. The anodic oxidation die-casting aluminum alloy comprises the following elements in percentage by mass: 2-4% of Mg element, 0.2-2% of Si element, 1.6-2.4% of Mn element, 0.2-0.3% of Cu element, less than or equal to 2% of Zn element, less than or equal to 0.2% of Fe element, less than or equal to 0.2% of inevitable impurities and the balance of Al, wherein the sum of the mass content of the Mg element and the mass content of the Zn element is 2-4%; the surface chromatic aberration of the anodic oxidation die-casting aluminum alloy is lt; the white brightness L is larger than or equal to 85, the tensile strength ranges from 180 MPa to 210 MPa, the yield strength ranges from 80 MPa to 120 MPa, and the elongation ranges from 3% to 5%. The anodic oxidation die-casting aluminum alloy has excellent flowability and surface glossiness, and is good in surface quality and high in yield.

The invention relates to the technical field of thrust bearings, in particular to a preparation method of a tin-based babbitt metal bushing and the tin-based babbitt metal bushing. The preparation method of the tin-based babbitt metal bushing comprises the following steps that a transition layer containing tin is arranged on the surface of a thrust pad, plate-strip-shaped tin-based babbitt metal is arranged on the transition layer, pressure and ultrasonic waves are applied to the surface of the plate-strip-shaped tin-based babbitt metal, and welding is completed through ultrasonic pressure welding. According to the method, the tin-containing transition layer is arranged on the surface of the thrust pad, the thrust pad bushing is rapidly prepared through ultrasonic pressure welding, and element diffusion and hydrogen element escape among the bushing, the transition layer and the steel backing and atomic lattice distortion and electron movement between the babbitt metal bushing and the transition layer are promoted through the coupling effect of extrusion force and high-frequency vibration; the plate-strip-shaped tin-based babbitt metal is welded to the surface of the thrust pad to form the bushing, the prepared babbitt metal bushing coating is uniform and compact, the preparation technology is greatly simplified, and environment friendliness is achieved.

A latent heat storage particle that comprises a core particle and a coating part covering at least a part of the surface of the core particle, wherein: the core particle is composed of an element selected from the group consisting of Al, Mg, Si, Ti, Fe, Ni, Cu, Zn, Sn, Sb, Ga, In, Bi, Pb and Cd or an alloy or a compound mainly composed of the same and has a melting point of 100° C. or higher; the coating part is composed of one or more selected from the group consisting of an element different from the component of the core particle, an alloy and an inorganic compound containing the element and a mixture thereof, which does not undergo a chemical reaction with the core particle in the temperature range of the operating temperature; and at least a part of the coating part is in a particulate shape.

The present invention provides a low-cost and high-performance aluminum alloy monofilament and a preparation method therefor. Taking the total weight of the aluminum alloy monofilament as 100%, the aluminum alloy monofilament consists of the following elements: Fe: 0.8-1.5%, Si≤0.05%, and the balance being Al and inevitable impurity elements. The preparation method for the aluminum alloy monofilament comprises the following steps: on the basis of the element composition and weight percentage of the aluminum alloy monofilament, at least performing smelting, refining, ultrasonic treatment, continuous casting and continuous rolling, and rod material drawing on raw materials to obtain the aluminum alloy monofilament. The aluminum alloy monofilament provided by the present invention is a low-cost, high-conductivity, and medium-strength aluminum alloy monofilament; the aluminum alloy monofilament has the strength greater than or equal to 280 MPa, the conductivity greater than or equal to 59% IACS, and the elongation greater than or equal to 3%; and the preparation process route of the aluminum alloy monofilament can meet the requirements of enterprises for mass production.

The invention relates to a reticular biphase heterostructure cast high-entropy alloy as well as preparation and application thereof, and aims to solve the technical problems of high production cost and long period caused by dependence on introduction of high-cost elements or a complex process in the conventional high-entropy alloy. The CrFeNiAlSi series alloy is used as a matrix component, the alloy design is optimized by introducing the Ti element, and the CrFeNiAl0. 28Si0. 12-xTix as-cast high-entropy alloy is prepared by combining the vacuum arc melting and suction casting process. The mechanical property of the alloy is optimized by reasonably adding Ti into the CrFeNiAlSi alloy and regulating and controlling the content of Ti, meanwhile, the adverse effect brought by Ti is overcome or balanced, and the as-cast high-entropy alloy which has a heterogeneous phase structure between battens and has high strength and good plasticity is developed.

The invention discloses an NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body and a preparation method thereof, the chemical general formula of the NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body is (1-x) Sr0. 5Zr2 (PO4) 3-x (Ln1 / n) PO4, x represents molar percentage, the value range is 0.1-0.9, x represents molar percentage, and the value range is 0.1-0.9. The NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body is NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body. N represents the number of element types of Ln lattice sites in the high-entropy (Ln1 / n) PO4 monazite type, and n is an integer and is larger than or equal to 5 and smaller than or equal to 7; the Ln element types comprise La, Nd, Sm, Eu, Gd, Ho, Er, Sr0. 5Zr2 (PO4) 3 and (Ln1 / n) PO4, and the molar ratio of the Ln element types to the Sr0. 5Zr2 (PO4) 3 to the (Ln1 / n) PO4 can be freely regulated and controlled. The NZP-high-entropy (Ln1 / n) PO4 monazite type multiphase ceramic solidified body adopts an in-situ preparation process, and integration of crystal phase synthesis and sintering densification can be realized. The preparation method comprises the following steps: uniformly mixing the raw materials, pretreating, adding a sintering aid, mixing again, granulating and aging the obtained powder, molding, removing plastic, and sintering to obtain the NZP-high-entropy (Ln1 / n) PO4 monazite type composite ceramic solidified body. The preparation process disclosed by the invention has the advantages of flexible composition design, capability of simultaneously curing various fission products and (sub) actinide series nuclides, short preparation period, low production energy consumption, high product compactness and the like.

The invention discloses an iron-based nanocrystalline soft magnetic alloy and a preparation method thereof. A magnetically soft alloy strip is prepared through smelting and a single-roller melt-spinning method, stress relief annealing is carried out on the magnetically soft alloy strip through assistance of a magnetic field, and then crystallization annealing treatment is carried out. Different from a traditional method for regulating and controlling the magnetic performance of the alloy through precipitation of a large number of nanocrystals, the method only induces precipitation of a very small number of nanocrystals, and high saturation flux density and low coercive force can be obtained while the toughness of the strip is ensured; the iron-based nanocrystalline soft magnetic alloy with high saturation flux density and low coercive force can be prepared by taking Fe as a main element, Co element with the atomic fraction lower than 8%, Cu element with the atomic fraction lower than 1% and at least one of oxygen, sulfur, phosphorus, carbon, silicon, boron and the like as other trace elements.

The invention relates to a special copper-tin alloy material and a preparation method and application thereof. The special copper-tin alloy material comprises the following elements in percentage by mass: 6.0-10.0% of Sn; 0.05 to 0.5 part of Ni; zn: < = 5.0; mn < = 0.5; 0.2 to 1.0 part of Co; pb: < = 1.0; al < = 0.25; si < = 0.05; and the balance of copper and inevitable impurities. The tensile strength of the special copper-tin alloy material ranges from 360 MPa to 560 MPa, the yield strength ranges from 200 MPa to 350 MPa, the hardness ranges from 120 HB to 180 HB, the ductility is larger than or equal to 20%, and the special copper-tin alloy material further has the advantages of abrasion resistance, friction reduction, sintering resistance, corrosion resistance and good burying property and thermal conductivity.

The invention discloses a neodymium-iron-boron magnet and a preparation method thereof. Raw materials of the neodymium-iron-boron magnet comprise a neodymium-iron-boron magnet base body and slurry containing a heavy rare earth element RE '. The component composition of the neodymium iron boron magnet base body is REx (Fe < 100-a > Ma) < 100-x-y > By, wherein RE is at least two of La, Ce, Pr and Nd and certainly contains Pr, and the mass of Pr in RE accounts for 25%-35% of the total mass of RE; m is selected from at least one of Co, Cu, Al, Nb, Ti, Zr and Ga; a, x and y represent numerical values obtained by multiplying the weight percentage of each element by 100, 28.5 < = x < = 31, 0.85 < = y < = 1.02, and 1.9 < = a < = 4.4; rE'is at least one of Pr, Gd, Tb, Dy, Ho and Er. After raw materials are made into neodymium iron boron alloy powder, a neodymium iron boron magnet base body is obtained through magnetic field forming, sintering and aging treatment, then the surface of the magnet base body is coated with slurry, elements in the slurry permeate into the interior from the surface of a flaky magnet through grain boundary diffusion, and the neodymium iron boron magnet is obtained. The use of heavy rare earth elements can be reduced, and meanwhile, the magnetic performance of the magnet is improved.

The invention discloses a cross-scale graphene / aluminum composite material machine learning design method, and belongs to the technical field of metal material property prediction. In order to inhibit serious interface reaction of graphene and a metal matrix at an interface, a method for accelerating a first principle by machine learning is utilized, alloy elements suitable for segregation towards a graphene / aluminum interface are selected in a periodic table range of elements, and elements suitable for being doped in the aluminum matrix and having no negative influence on mechanical properties of the matrix are selected; the influence of graphene distribution and temperature on the mechanical property of the cross-scale graphene / aluminum composite material is determined through a molecular dynamics simulation method, and the preparation process range of the cross-scale graphene / aluminum composite material is determined; alloy elements suitable for segregation to a graphene / aluminum interface and elements suitable for being doped in an aluminum matrix and having no negative influence on mechanical properties of the matrix are compared to obtain an intersection, doped elements are determined, and then experimental verification is performed based on a preparation process of the cross-scale graphene / aluminum composite material.

Provided are an aluminum alloy and a preparation method therefor, a die casting, a welding assembly, and an electronic device. Based on the total weight of the aluminum alloy, the aluminum alloy comprises the following elements in percentages by weight: 0.01-15% of La; 0.01-15% of Ce; 0.3-3% of Fe; 0.3-3.0% of Mn; and 0.01%-0.5% of Zr. La and Ce content together total 3%-15%, and the balance is Al and inevitable impurities, the content of any individual impurity element among the inevitable impurities being less than or equal to 0.2%.

A heat storage device of the present disclosure includes a latent heat storage material and a container. The latent heat storage material is water-soluble. The container houses the latent heat storage material and is formed of a main material being aluminum or an aluminum alloy. The container has a joining portion and a first coating. The first coating covers at least the joining portion on an inner surface of the container. On a surface of the first coating, a first element and fluorine are present. The first element is an element other than aluminum and having a lower ionization tendency than potassium.

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 discloses a low-temperature high-toughness austenitic stainless steel welding wire and a preparation method thereof, and relates to the technical field of welding materials, in particular to a welding wire with high-toughness mechanical properties of formed cladding metal in a low-temperature environment and a preparation method of the welding wire. The Ti element is introduced into the welding wire, the dosage relation of the Al element and the Ti element is controlled, and the mass ratio of Al to Ti is kept to be (5-10): 1; a proper amount of Al element can play a role in purifying a molten pool during welding work, a proper amount of Ti element can effectively stabilize an austenite phase, and therefore it is guaranteed that the welding wire has the basic welding capacity, and meanwhile after the welding wire is converted into cladding metal, the welding wire is not prone to deformation. The material characteristics and the like of the material can meet the use requirements at room temperature and ultralow temperature environment, that is, the material has and keeps good tensile property, impact property and the like, so that pipelines, containers and the like prepared from the material can be used for transmitting or loading special low-temperature materials such as liquid hydrogen, liquid helium and the like.

The invention provides a high-temperature-bearing nickel-based powder high-temperature alloy and a preparation method thereof. The alloy comprises the following elements in percentage by mass: 6.0% to 9.0% of Cr, 15.0% to 16.0% of Co, 5.0% to 8.0% of W, 1.0% to 2.0% of Mo, 3.0% to 4.0% of Al, 3.0% to 4.0% of Ti, 3.0% to 3.5% of Nb, 2.0% to 3.0% of Ta, 0.0% to 0.1% of Zr, 0.02% to 0.3% of C, 0.02% to 0.03% of B, 0.0% to 0.5% of Hf, 0.0% to 1.0% of Fe and the balance of Ni, and other trace elements and inevitable trace or impurity elements which are beneficial to the high-temperature alloy. The nickel-based powder superalloy provided by the invention has excellent high-temperature mechanical properties, and meets the requirements of rotating parts in aero-engines and aerospace power systems on high-temperature-bearing structural materials.

The invention provides high-strength and high-toughness steel based on laser rapid melting, and the alloy components of the high-strength and high-toughness steel comprise the following elements in percentage by mass: 0.1-0.3% of C, 0.1-2.6% of Mn, 0.1-1.5% of Ni, 0.1-4% of Mo, 1-4.5% of W, 0.1-1.2% of Si and the balance of Fe and inevitable impurity elements, in the impurity elements, P is less than or equal to 0.01%, and S is less than or equal to 0.02%; wherein the ratio of the sum of the mass percentages of Ni and Mn to the mass percentage of Si is not less than 1.572. Meanwhile, the invention further discloses an additive manufacturing method of the high-strength and high-toughness steel based on laser rapid melting. According to the high-strength and high-toughness steel, the influence of alloying elements on an Mf point and an Ac1 point is fully considered during design, it is ensured that all sedimentary structures are lath martensite, and the macrosegregation phenomenon in solidification structures is avoided through laser rapid melting; and then nanoscale film austenite is obtained on the two sides of the lath martensite through in-situ laser ultra-fast heat treatment or off-site infrared ultra-fast heat treatment, and the high yield strength of 1200 MPa and the ultrahigh Charpy V-shaped notch impact energy of 120 J are obtained.

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.

A halide material producing method according to the present disclosure includes (A) subjecting a material mixture containing a first compound containing Li, M1, and X1 and a second compound containing M2 to mechanochemical treatment, wherein each of M1 and M2 represents one type of element selected from a metal element and a metalloid element, and X1 represents at least one selected from the group consisting of F, Cl, Br, and I.