62 results about "Cr element" patented technology

The invention discloses a high-temperature high-strength heat-resistant aluminum alloy which is characterized in that Al-6% of Cu-1. 5% of Zn-0. 5% of Mg is taken as a matrix, Mn and Cr elements are added, a target alloy is prepared by using a medium-frequency induction heating device, and after casting and machining, a JINDUN Jinton heat treatment device is adopted to carry out T6 process treatment on an aluminum alloy cast ingot.

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.

This invention discloses a high-elongation aluminum alloy for lightweight automotive components and its preparation method, relating to the field of aluminum alloy material technology. It features a hierarchical porous structure with surface micron-sized closed pores and a core nano-sized through-pore. The Ti and Mn elements synergistically form an Al-Ti-Mn martensitic phase transformation core region with Al, and the Cr element precisely controls the martensitic phase transformation initiation temperature to room temperature, ensuring stable triggering of the austenite-to-martensitic phase transformation and energy absorption during room-temperature collisions. This invention achieves initial impact buffering and gradual collapse energy absorption through a hierarchical porous structure with surface micron-sized closed pores and a core nano-sized through-pore. This dual energy absorption mechanism significantly improves the material's strength-ductility product, far exceeding that of traditional aluminum alloys.

Provided are a Cr-Ti-N alloy material, a Cr-Ti-N alloy film, a Cr-Ti-N alloy coating, an alloy film product, and a use. The Cr-Ti-N alloy material comprises a Cr element, a Ti element, and an N element. In the Cr-Ti-N alloy material, the atomic ratio of the Cr element, the Ti element, and the N element is x:y:z, wherein 27.8≤x≤62.9, 18.4≤y≤37.0, and 13.8≤z≤35.2. The Cr-Ti-N alloy material has both excellent corrosion resistance and high hardness.

Provided are a Cr-Ti-N alloy material, a Cr-Ti-N alloy film, a Cr-Ti-N alloy coating, an alloy film product, and a use. The Cr-Ti-N alloy material comprises a Cr element, a Ti element, and an N element. In the Cr-Ti-N alloy material, the atomic ratio of the Cr element, the Ti element, and the N element is x:y:z, wherein 27.8≤x≤62.9, 18.4≤y≤37.0, and 13.8≤z≤35.2. The Cr-Ti-N alloy material has both excellent corrosion resistance and high hardness.

The invention relates to a 45 steel plate for punch forming of a high-strength chain wheel and a preparation method of the 45 steel plate. The steel comprises the following chemical components: 0.42%-0.48% of C, 0.20%-0.30% of Si, 0.55%-0.65% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.015%-0.025% of V, 0.15%-0.20% of Cr and the balance of Fe and impurities. The metallographic structure of the finished steel plate is a ferrite and pearlite mixed structure, and the volume fraction ratio of ferrite to pearlite is (45%-55%): (55%-45%); and the grain size grade is 8.0-10.0 grade. On the basis of traditional 45 steel components, a small amount of V and Cr elements are added, a specific controlled rolling and controlled cooling process is combined, under the condition that follow-up heat treatment is not carried out, hot-rolled strip steel which is small in grain size, uniform in structure and excellent in obdurability matching is directly obtained, and the finished steel product is particularly suitable for punch forming of chain wheels.

The invention discloses a high-strength wind power main shaft bearing and a processing method thereof, and the method comprises the following steps: S1, raw material preparation: a, blank selection: selecting high-strength alloy structural steel containing Cr, Ni and Mo elements as a bearing blank, wherein the content of the Cr element is 1.5%-2.0%, the content of the Ni element is 0.8%-1.2%, and the content of the Mo element is 0.2%-0.5%; high-strength alloy structural steel containing Cr, Ni and Mo is selected as a blank, the Cr element is used for improving abrasion resistance and hardenability, the Ni element is used for enhancing toughness and fatigue resistance, the Mo element is used for improving high-temperature strength and tempering-resistant stability, the performance bottleneck of a traditional material is broken through from the raw material level, meanwhile, through homogenizing annealing in the blank pretreatment stage, the hardness of the blank is improved, and the hardness of the blank is improved. The structure segregation in the blank is effectively eliminated, the uniformity of material components and structures is guaranteed, a stable material foundation is laid for subsequent machining procedures, and local stress concentration and early failure caused by uneven materials are avoided.

The application provides a kind of straw returning to field with self-hardening broken blade steel and its preparation method, and belongs to the field of steel preparation.The broken blade steel chemical composition includes C, Si, Mn, Cr, Ni, Mo, Nb, Ti, V, B and Fe; wherein, the content of C is 0.30%~0.55%, the content of Si is 0.15%~0.25%, the content of Mn is 0.45%~0.75%, the content of Cr is 0.85%~2.0%, the content of Ni is 3.0%~4.5%, the content of Mo is 0.4%~1.2%, the content of Nb is 0.01%~0.060%, the content of Ti is 0.015%~0.03%, the content of V is 0.3%~0.9%, and the content of B is 0.002%~0.005% by mass fraction.By limiting the addition of C, Si and Mn to improve the tensile strength of steel, adding Ti and Nb elements for fine-grain strengthening and second phase particle precipitation strengthening, adding B and Cr elements to improve the hardenability of steel, adding Ni to improve the toughness of steel, adding Mo element to improve the ability of anti-tempering brittleness, and adding V element to ensure hardenability at local high temperature, the metallographic structure of the steel is obtained in the form of lath martensite, thereby improving the performance of the broken blade.

The invention provides a copper alloy pipe and a preparation method thereof. The copper alloy pipe is prepared from the following elements in percentage by mass: 0.5 to 2.1 percent of Al element, 0.5 to 2.0 percent of Si element, 0.5 to 2.0 percent of Ni element, 0.05 to 0.08 percent of Ce element, 0.05 to 0.1 percent of Cr element, 0.05 to 0.08 percent of V element, less than or equal to 0.02 percent of inevitable impurities and the balance of Cu element, an alpha phase and a beta phase exist in the copper alloy pipe, and the mass ratio of the alpha phase to the beta phase is (40-80): (20-60). The copper alloy pipe can give consideration to high strength, high conductivity and corrosion resistance, directional regulation and control of the double-phase proportion can be achieved by controlling the mass ratio of the alpha phase to the beta phase, optimization and adjustment are conducted according to the strength and conductivity requirements, and then the copper alloy pipe can be better applied to sea optical cable connecting pieces, underwater equipment connectors and other use scenes.

The invention provides an aluminum alloy plate and a preparation method thereof. The preparation method comprises the steps that smelting, casting, soaking and heating integrated treatment, hot rolling and cold rolling are sequentially conducted after ingredients of an aluminum alloy plate are prepared, and a cold-rolled coiled material is obtained; the aluminum alloy plate comprises the following components in percentage by mass: 0.6-1.3% of Si element, less than or equal to 0.5% of Fe element, 0.5-1.1% of Cu element, less than or equal to 1.0% of Mn element, 0.6-1.2% of Mg element, less than or equal to 0.25% of Cr element, less than or equal to 0.7% of Zn element, less than or equal to 0.2% of Ti element, less than or equal to 0.2% of Zr element and the balance of Al element. The cold-rolled coiled material is sequentially subjected to solid solution treatment, quenching (multi-stage cooling), straightening and pre-aging, and a first finished coiled material is obtained; and the first finished coiled material is subjected to differential temperature heating artificial aging treatment, and the aluminum alloy plate is obtained. The production efficiency of the preparation method is high, and the comprehensive performance of the obtained aluminum alloy plate is good.

The invention provides a multi-principal-element alloy abrasion-resistant coating as well as a preparation method and application of the multi-principal-element alloy abrasion-resistant coating. The multi-principal-element alloy abrasion-resistant coating comprises a hard phase and an FCC soft phase, the hard phase comprises MC, M7C3 type core-shell structure carbides and phase intermetallic compounds, and the FCC soft phase comprises Cr2Ni3 and Fe3Ni2; the core of the M7C3 type core-shell structure carbide is made of FeCoNi, and the shell of the M7C3 type core-shell structure carbide contains C and Cr elements. The multi-principal-element alloy abrasion-resistant coating is prepared from a composite powder material containing 55 wt%-75 wt% of iron-based amorphous powder and 25 wt%-45 wt% of nickel-based alloy powder through a laser cladding technology. The multi-principal-element alloy abrasion-resistant coating provided by the invention is uniform and compact in structure, free of obvious defects, good in corrosion capacity and relatively low in abrasion rate in a seawater environment.

The invention relates to the technical field of continuous casting production of gear steel, and discloses a double-section electromagnetic stirring process for segregation optimization of a CrMnMo series gear steel casting blank. Comprising the steps of S1, a process preparation stage, S2, a crystallizer electromagnetic stirring process (segregation inhibition in a primary solidification stage) in the first stage, S3, a tail end electromagnetic stirring process (solidification tail end segregation correction) in the second stage, S4, double-stage stirring cooperative regulation and control key points, S5, a casting blank subsequent slow cooling cooperative process, S6, process monitoring and dynamic adjustment and S7, process verification and optimization. Through precise division of labor and cooperative regulation and control of double-section electromagnetic stirring, uneven growth of dendritic crystal arms is inhibited in the primary solidification stage, correction elements at the solidification tail end are enriched, the C, Mn and Cr element range of the section of a casting blank is smaller than or equal to 0.040%, center porosity is achieved, general porosity is smaller than or equal to 2.0 levels, ingot segregation is smaller than or equal to 1.5 levels, and the industry pain point of serious segregation in a traditional process is effectively solved.

This invention discloses a titanium alloy plate for marine engineering and its preparation method, belonging to the field of titanium alloy manufacturing technology. The invention introduces 1.5-2% Cr element into the titanium alloy, synergistically using Mo and Nb to regulate the stability and microstructure evolution of the β phase; employs forging to break the as-cast microstructure and refine the grains; combines 90° reversing hot rolling to break the texture inheritance; and improves the uniformity of the plate's thickness and suppresses edge cracks through cladding and stacking rolling; finally, a matched solution aging treatment is performed to achieve a synergistic improvement in strength, toughness, and microstructure uniformity. The resulting plate has a uniform microstructure, significantly weakened anisotropy, and excellent balanced mechanical properties, meeting the performance requirements of marine load-bearing components. It is suitable for deep-sea equipment, ships, and offshore platform structural components, with broad application prospects.

The present application relates to a kind of manganese cobalt spinel coating and its preparation method and application, belong to solid oxide fuel cell material technical field.The manganese cobalt spinel coating described in the present application is coated on the substrate containing Cr element, including the binding layer on substrate and the structural layer on the binding layer;The binding layer includes the following components: manganese cobalt spinel material, MnCr2O4, Cr2O3;The structural layer is manganese cobalt spinel material;The chemical formula of the manganese cobalt spinel material is Mn 1+ x Co 2‑x O4, wherein, -1

The invention discloses a metal bipolar plate for a fuel cell and a preparation method thereof.The metal bipolar plate comprises a metal substrate and a functional layer covering the metal substrate, the metal substrate is made of 316L stainless steel, and the functional layer sequentially comprises a sputtering layer, a transition layer and a ternary composite layer from the bottom layer close to the metal substrate to the surface layer, the sputtering layer is composed of a Cr element, the transition layer is composed of two elements of Cr and Ti, the ternary composite layer is composed of three elements of Cr, Ti and C. The preparation technology of the functional layer is a combination of a magnetron sputtering technology and a chemical vapor deposition technology. The metal bipolar plate prepared by the method has excellent conductivity and corrosion resistance.

The invention provides a stainless steel material, a product and a vehicle, and the stainless steel material comprises the following chemical components in percentage by mass: 18.2% < = Cr < = 21.2%, and 0.13% < N < = 0.18%. According to the stainless steel material disclosed by the invention, through the component design containing the TRIP effect, particularly, the content of the alloy element N is greatly improved, and the Cr element with the specific content is added, so that a passive film on the surface of the stainless steel material can be modified, the content of a Cr2O3 oxide film with protection is greatly improved due to N enrichment, and the crevice corrosion resistance of the material is greatly improved; by means of the method, complex deep drawing of a high-pressure oil tank of a new energy automobile can be met, crevice corrosion perforation oil leakage under the severe corrosion environment of the bottom of the automobile can be met, traditional 304 stainless steel is replaced, higher service safety is achieved, and driving and riding safety is improved.

The invention relates to low-cost high-performance Sb-Nb-Ti microalloyed steel for an ocean platform and a preparation method of the low-cost high-performance Sb-Nb-Ti microalloyed steel, and belongs to the field of weathering resistant steel design and manufacturing, the steel comprises the following chemical components in percentage by weight (wt.%): 0.06 to 0.08 percent of C, 0.25 to 0.35 percent of Si, 1.45 to 1.55 percent of Mn, 0.20 to 0.30 percent of Cu, 0.75 to 0.85 percent of Ni, 0.01 to 0.03 percent of Ti, 0.01 to 0.03 percent of Nb, 0.01 to 0.05 percent of Al, 0.15 to 0.25 percent of Sb and the balance of Fe and inevitable impurities, the preparation method sequentially comprises the steps of converter smelting, external refining, slab casting, billet heating, controlled rolling, controlled cooling and air cooling. The rolling process comprises the following steps: sequentially rolling a heated steel billet in an austenite recrystallization region, rolling an austenite non-recrystallization region and rolling an austenite and ferrite two-phase region; according to the steel plate, the chemical components are simple, the Cr element is not added, the contents of Cu and Ni are controlled at a low level, a simple TMCP process is adopted to replace a complex TMCP + tempering or TMCP + hardening and tempering process, it is guaranteed that the steel plate has good obdurability matching, low-temperature toughness and welding performance, meanwhile, the production cost of the steel plate is reduced, and the production efficiency is improved.

The invention discloses a high-strength corrosion-resistant aluminum alloy for an automobile battery tray and a preparation method thereof.According to the high-strength corrosion-resistant aluminum alloy for the automobile battery tray and the preparation method thereof, by adding the La element in a specific proportion and regulating and controlling the content of Si and Mg, the corrosion resistance of the material is remarkably improved on the premise that the strength is not sacrificed, in addition, addition of the Cr element is avoided, meanwhile, the La element is introduced, the plastic deformation capacity of the alloy is effectively improved, and the service life of the alloy is prolonged. And an ultrasonic treatment process is combined to promote the uniformity of the melt, so that the complex-section profile is easier to extrude and form, the production efficiency is favorably improved, and the defects such as dragging and breaking are not easy to occur. The La element is added, the morphology of Si particles is converted from a continuous sheet shape to a discontinuous short rod shape, extension of corrosion along a grain boundary is effectively hindered, and the alloy has remarkable mechanical performance and corrosion resistance by combining the synergistic effect of a specific refining agent, components and the process.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a preparation method of an AB2 type titanium-manganese series hydrogen storage alloy. According to the method, at least one AB-type intermediate alloy is prepared from an elemental raw material of at least one A-side metal element and an elemental raw material of at least one B-side metal element of the AB2-type titanium-manganese hydrogen storage alloy, the A-side metal element comprises a Ti element and / or a Zr element, and the B-side metal element comprises a Cr element and / or an Mn element; and preparing the AB2 type titanium-manganese hydrogen storage alloy from the at least one AB type intermediate alloy and other metal raw materials for preparing the AB2 type titanium-manganese hydrogen storage alloy. According to the preparation method of the AB2 type titanium-manganese series hydrogen storage alloy, the metal burning loss can be remarkably reduced, and meanwhile the hydrogen storage performance of the AB2 type titanium-manganese series hydrogen storage alloy is improved.

The invention provides a low-cost titanium alloy high-efficiency high-toughness welding method, which comprises the steps of welding wire design, preparation before welding, welding process and post-welding treatment, and the welding wire design comprises the following steps: controlling the contents of Al and V elements to be close to the level of a base metal to realize joint strength matching; the proportion matching of Fe and Cr elements is controlled, and the strength and the toughness are both considered; the welding wire contains B elements or TiB2 particles or TiC particles, and crack propagation inhibition is achieved. According to the method, the structure evolution of a heat affected zone can be effectively regulated and controlled while the welding defects are restrained, the joint obdurability matching is improved, and good process adaptability and economical efficiency are achieved.

The application discloses a preparation process of B-Zr doped cobalt-based alloy powder and coating, and the alloy powder is composed of the following components with mass percentage: 90-95% of Stellite6, 1-5% of B and 1-5% of Zr. By introducing appropriate amounts of B and Zr elements into the Stellite6 alloy powder, the Zr and B elements synergistically alleviate the brittle boride to inhibit cracks, and synergistically form fine and dispersed ZrB2 and other stable high-hardness phases, promote the refinement of the structure, improve the hardness of the coating, and prevent B from forming a continuous network of brittle phases. The addition of the B element can also generate intermetallic compounds with Co elements and Cr elements, which have high hardness and high wear resistance, so that the overall strengthening layer hardness is improved. The finally formed high-hardness strengthening layer has a thickness of more than 0.5 mm and no cracks are generated. The hardness of the strengthening layer is more than 1100 HV, and the hardness of the strengthening layer can be more than 2-4 times of the substrate.

The invention relates to an aluminum alloy plate for an attenuation-resistant ultrathin tank cover material, which comprises the following elements in percentage by mass: 0.07-0.15% of Si element, 0.07-0.15% of Al element, 0.07-0.15% of Al element, 0.07-0.15% of Al element and the balance of aluminum element. 0.15 to 0.3 percent of Fe element; 0.07%-0.15% of a Cu element; 0.3 to 0.5 percent of Mn element; 4.75%-4.95% of an Mg element; 0.01%-0.03% of a Ti element; 0.02 to 0.10 percent of Cr element; 0.01%-0.20% of a Zn element; the total content of the inevitable impurities is smaller than or equal to 0.15%; the sum of the mass of the Mn element and the mass of the Cr element in the aluminum alloy plate for the tank cover material is 0.40-0.55%. After the 0.200-0.208 mm ultra-thin 202 series two-piece can easy-open cover prepared from the aluminum alloy is subjected to 90 DEG C / 40 min water boiling aging attenuation, the pressure resistance is larger than or equal to 700 KPa, and the attenuation amplitude is smaller than or equal to 30 KPa.

The invention discloses high-hardness nickel-based composite powder for laser cladding and a laser cladding method thereof.The composite powder is composed of 1-4 wt% of nearly-spherical pure aluminum powder and the balance nickel-based high-temperature alloy powder, the average particle size of the nearly-spherical pure aluminum powder is 100-150 microns, the average particle size of the nickel-based high-temperature alloy powder is 75-150 microns, and the nickel-based high-temperature alloy powder is composed of 15-17 wt% of Cr, 2-4 wt% of Fe, 3-4 wt% of B, 1-2 wt% of Si, 0.5-1 wt% of C and the balance Fe. And the balance of Ni. According to the method, the two kinds of powder are evenly mixed through the acoustic resonance mixing technology, molten pool flowing and solidification in laser cladding are changed by regulating and controlling the content of aluminum powder, the crack sensitivity is reduced, and therefore a large-area crack-free cladding layer is obtained, meanwhile, the Cr element in the nickel-based high-temperature alloy powder can react with the B element and the C element so that hard ceramic phase chromium boride and chromium carbide can be separated out, and therefore the large-area crack-free cladding layer can be obtained. And the hardness of the cladding layer is greatly improved.

The invention relates to a vacuum brazing high-toughness bainite tooth body and a preparation method thereof, belongs to the technical field of steel for tooth bodies, and is used for solving at least one of the problems that high hardness and high toughness of an existing cutting tooth body cannot be considered under the cold condition of a vacuum brazing furnace, and the preparation method is large in pollution, high in cost and the like. Through reasonable component design and strict control of technological parameters in the preparation process, the prepared tooth body has high strength and high toughness. Mn and Cr elements are combined for use, so that the stability of supercooled austenite can be guaranteed, formation of ferrite is inhibited, bainite transformation is promoted to occur in a low-temperature phase region, and the width of a bainite lath is refined; si and Al elements are combined for use, so that separation of cementite in the bainite transformation process can be inhibited, and the stability of retained austenite is improved; nb and Ti are combined for use, so that grain coarsening in the brazing temperature rising and heat preservation stage can be inhibited, and meanwhile microalloy carbide is dispersed and separated out. The alloy elements are combined for use, so that a high-proportion bainite structure can be obtained, and the strength and the toughness of the vacuum brazing tooth body are improved.

The invention relates to the technical field of aluminum alloys, in particular to a high-toughness fine-grain aluminum alloy and a preparation method thereof. The grain boundary of the high-toughness fine-grain aluminum alloy contains two or three types of second phases; the second phase is composed of Al and alloy elements, and the size of the second phase is 20-100 nm; the alloy element is selected from one or more of Si, Mg, Cu, Zn, Fe, Mn, Zr and Cr. By regulating and controlling the grain structure and the second phase matching characteristic of the alloy, the problem that the toughness of the traditional aluminum alloy in the cast state is poor is effectively solved, and a new scheme is provided for preparing the high-toughness aluminum alloy light material in a short process.

The invention provides a CoFeNiMo0. 2Alx high-entropy alloy free of Cr and a preparation method of the CoFeNiMo0. 2Alx high-entropy alloy free of Cr. The chemical expression of the alloy disclosed by the invention is CoFeNiMo < 0.2 > Al < x >, wherein the value of x is 0, 0.3 or 0.5. The high-entropy alloy CoFeNiMo0. 2Alx with components designed in advance is prepared by adopting a vacuum arc melting technology. Wherein the CoFeNiMo < 0.2 > alloy and the CoFeNiMo < 0.2 > Al < 0.3 > alloy are composed of an FCC phase, and the CoFeNiMo < 0.2 > Al < 0.5 > alloy is composed of an FCC phase and a BCC phase. By adding Al, the strength of the alloy is greatly improved compared with that of a high-entropy alloy of a single-phase FCC structure, and the corrosion resistance of the alloy is not greatly influenced. Meanwhile, the alloy does not contain precious metal Cr element, so that the high-entropy alloy has the outstanding advantages of being simple, practical and easy to popularize in engineering application.

The invention discloses a wear-resistant and corrosion-resistant fast-cutting tin-lead-zinc bronze bar and a preparation method thereof. The tin-lead-zinc bronze bar comprises the following components in percentage by mass: 4.0%-6.0% of Sn, 0.1%-0.3% of Fe, 4.0%-6.0% of Zn, 1.0%-3.0% of Pb, 0.1%-0.6% of Ni, 0.01%-0.02% of Bi, 0.05%-0.1% of Sb, 0.1%-0.2% of Cr and the balance of Cu. Wherein the tin-lead-zinc bronze bar comprises wear-resistant phases, namely an alpha-FeCr phase and a sigma-NiCr phase, of a tetragonal crystal system. By optimizing the composition of the tin-lead-zinc bronze alloy (adding antimony (Sb) and bismuth (Bi) elements) and adopting a new high-temperature-resistant refiner, the problems of tool sticking and vibration caused by gravity segregation of lead and reverse segregation of tin are solved; by introducing the Cr element, wear-resistant phases of alpha-FeCr and sigma-NiCr of a tetragonal system are formed, and the wear resistance of the tin-lead-zinc bronze bar is greatly improved.

The application provides an aluminum alloy plate and a preparation method thereof. The preparation method comprises the following steps: after ingredients of the aluminum alloy plate are proportioned, melting, casting, integrated treatment of soaking and heating, hot rolling and cold rolling are sequentially performed to obtain a cold-rolled coil; the ingredients of the aluminum alloy plate comprise the following components in percentage by mass: 0.6-1.3% of Si element, 0.5-1.1% of Cu element, 0.6-1.2% of Mg element, 0.25% of Cr element, 0.7% of Zn element, 0.2% of Ti element, 0.2% of Zr element and the balance of Al element; the cold-rolled coil is sequentially subjected to solid solution, quenching (multi-stage cooling), straightening and pre-aging to obtain a first finished coil; and the first finished coil is subjected to differential temperature heating artificial aging treatment to obtain the aluminum alloy plate. The production efficiency of the above preparation method is high, and the comprehensive performance of the obtained aluminum alloy plate is good.

The invention discloses a preparation process of B-Zr doped cobalt-based alloy powder and a coating. The alloy powder is prepared from the following components in percentage by mass: 90 to 95 percent of Stellite6, 1 to 5 percent of B and 1 to 5 percent of Zr. A proper amount of B and Zr elements are introduced into the Stellite6 alloy powder, the Zr and the B elements act synergistically to relieve brittle boride and inhibit cracks, fine and dispersed ZrB and other stable high-hardness phases are formed synergistically, structure refinement is promoted, the hardness of the coating is improved, B is prevented from forming a continuous net-shaped brittle phase, and the corrosion resistance of the coating is improved. An intermetallic compound generated by the element B, the element Co and the element Cr has high hardness and high wear resistance, so that the hardness of the whole strengthened layer is improved, the thickness of the finally formed high-hardness strengthened layer can reach 0.5 mm or above, no crack is generated, the hardness of the strengthened layer exceeds 1100 HV, and the hardness of the strengthened layer can reach 2-4 times or above of that of a matrix.

The application discloses a carbide modified abrasion-resistant alloy steel and a preparation method and application thereof, and relates to the technical field of wear-resistant steel. By adding a higher Cr element and combining with the addition of a proper amount of C element, the solid solution strengthening effect of the steel and the precipitation of hard chromium-containing carbides are ensured, which is beneficial to the improvement of the wear resistance of the steel. In addition, by controlling the addition amount of the C element, after the precipitation of the carbides, part of the carbon still exists in the matrix, which promotes the final formation of hard and tough lath martensite and avoids the generation of high-carbon brittle acicular martensite. Moreover, by adding the higher Cr element and proper amounts of Ni and Mo elements, the steel can still maintain a passivation state in a weak acid corrosive environment, so that the corrosion resistance of the steel is increased. Furthermore, V, Zr and Re in the steel can also react with C to precipitate carbides in the matrix, which can effectively control the size of the carbides, so that the wear resistance of the steel is ensured while the toughness and corrosion resistance of the steel are not damaged.