CN110125180B - Reinforced nonferrous metal plate and preparation method thereof - Google Patents
Reinforced nonferrous metal plate and preparation method thereof Download PDFInfo
- Publication number
- CN110125180B CN110125180B CN201810134257.4A CN201810134257A CN110125180B CN 110125180 B CN110125180 B CN 110125180B CN 201810134257 A CN201810134257 A CN 201810134257A CN 110125180 B CN110125180 B CN 110125180B
- Authority
- CN
- China
- Prior art keywords
- metal
- metal sheet
- hot rolling
- composite powder
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Laminated Bodies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a reinforced nonferrous metal plate and a preparation method thereof, wherein the preparation method comprises the following steps: providing a plurality of metal plates; applying a composite powder to the surface of the metal sheet; overlapping the metal plates to form a multi-plate structural member; subjecting the multi-plate structural member to a first hot rolling; cutting off the structural part subjected to the first hot rolling; superposing the cut structural members to form a laminated structural member; subjecting the laminated structural member to a second pass of hot rolling; and continuously repeating the cutting, overlapping and hot rolling processes for N times, wherein N is an integer greater than or equal to zero. The method disclosed by the invention has the advantages of low process difficulty, easiness in control of process parameters, safety and high production efficiency, and can be directly amplified to prepare large-sized workpieces.
Description
Technical Field
The invention relates to an alloy taking graphene as a second-phase material to enter metal and a preparation method thereof, in particular to an alloy preparation method of an accumulative pack rolling process.
Background
With the global industrial development, the demand of high-strength nonferrous metal materials is increasingly strong; from the aspect of energy saving, the industrial metal is a trend to be light; from the viewpoint of saving metal mineral resources, the utilization of carbon materials with huge reserves on the earth to strengthen nonferrous metals is a huge breakthrough. Since aluminum, copper, magnesium, nickel, and the like are not carbide-forming elements (material science definition), carbon atoms have low solid solubility in these elements, and conventional carbon materials alone cannot be used as a reinforcing material. The strengthening of the metals usually depends on 1) alloying to obtain high-strength intermetallic compounds, which causes that a plurality of heat treatment processes are added in the process of processing and forming, the resource consumption of the metals, rare earth and the like is huge, the strengthening effect approaches to the upper limit and the process technology difficulty is increasingly large, and the application environment is limited due to the comprehensive performance constraint of the products (such as the plasticity, heat conduction, electric conductivity and the like when the strength is increased); 2) aluminum-based alloys reinforced with additional hard particles or fibers, such as carbon fibers and carbon nanotubes, have been developed and used in great quantities in recent years, but the difficulty of melt casting or the cost of powder metallurgy has been great, and limited by material properties and structural requirements, only certain composite products and process applications have been made. Such as a carbon fiber reinforced aluminum alloy badminton racket. The disadvantages are that: 1. the casting can be carried out only once, and the plastic processing such as extrusion and the like is not needed subsequently; 2. the material has obvious anisotropy, and the material corresponding to the axial direction of the carbon fiber is tensile but not cut-resistant. If the carbon fibers are not parallel along the club axis as cast, the club performance drops dramatically.
Graphene is a polymer made of carbon atoms in sp2The hexagonal type formed by the hybrid tracks is honeycomb lattice, and the two-dimensional material is only one carbon atom thick. Theoretically possesses Young's modulus (1TPa), high breaking strength (125GPa) and ultrahigh heat conductivity coefficient (5000 W.m)-1·K-1) And electron mobility (200000cm2 v)-1·s-1) The material with the highest strength is known at present. If carbon can be added into the four non-ferrous metals for reinforcement in the form of graphene, stronger and lighter alloy can be realized, and the social cost is lower. However, according to the strict concept of graphene, graphene is a single-layer two-dimensional nanomaterial, and the cost for obtaining such a material is too high, and it is difficult to ensure the purity. The wuzhou xih material science and technology limited company can obtain controllable graphene in different layer number ranges by adjusting different graphene preparation processes and process parameters. In addition, the hexelement material science and technology limited company of Changzhou can obtain the controllable graphene with different reduction degrees through different preparation processes, that is, the graphene with the strict concept has oxygen atoms and hydrogen atoms with different degrees, and the concept of the graphene also falls into the technical scope of the disclosure.
To date, no results have been recognized in the metal industry for adding graphene to non-ferrous metals such as aluminum and copper. Most of the methods are to prepare graphene-aluminum composite materials by a powder metallurgy technical route, namely, metal powder such as aluminum powder and the like and graphene powder are stirred and adsorbed in high-speed ball milling mixing/liquid, and then are pressed, molded and sintered into an integral block. The reported strength is improved by 30-120 MPa, but the distribution information of graphene in the composite material is not reported, and the deformation strengthening or fine grain strengthening in the process can reach the same index; meanwhile, aluminum carbide is generated in the ball-milling powder mixing process of powder metallurgy, and the aluminum carbide can react with water in the air to generate methane and aluminum oxide in the subsequent technological process, namely, a large amount of graphene is lost in the powder metallurgy process; theoretically, the microscopic conditions of the powder during high-speed ball milling also promote the carbon-aluminum reaction, so that no authoritative application of the powder metallurgy olefinic aluminum alloy has been reported so far. The graphene is a two-dimensional film structure, is easy to twist, is made of a nano material in thickness, is of a micron structure in length and width, strengthens metal by means of the super tensile strength of the graphene, has obviously different blocking effects on dislocation movement and crack expansion of the metal from those of the traditional second-phase hard particles, and has special requirements on the form, position, distribution and two-phase interface of the graphene in the alloy by the brand-new strengthening mechanism; powder metallurgy is difficult to realize these aspects, and whether the process can make industry-accepted graphene reinforced aluminum-based alloy in the future is questionable. The graphene reinforced aluminum-based alloy prepared by powder metallurgy has the following defects: 1) the gas adsorbed on the surface of the powder can not be completely eliminated in the subsequent process, the porosity in the product assessment index is one item, the tensile strength of the product is limited, and industrial large parts can not be prepared; 2) the powder metallurgy process has multiple working procedures and long production period; 3) the graphene-aluminum composite material reported at present is still in an exploration stage and is not approved by the industrial field; 4) the aluminum powder is rocket fuel and is a controlled article.
The technical contents listed in the prior art merely represent the techniques mastered by the inventor and are not of course considered as the prior art for evaluating the novelty and inventive step of the present invention.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a reinforced nonferrous metal plate with more excellent performance;
the invention also aims to provide a preparation method for preparing the reinforced nonferrous metal plate.
The purpose of the invention is realized by the following technical scheme:
a method for preparing a reinforced non-ferrous metal plate, comprising:
providing a plurality of metal plates;
applying a composite powder to the surface of the metal sheet;
overlapping the metal plates to form a multi-plate structural member;
subjecting the multi-plate structural member to a first hot rolling;
cutting off the structural part subjected to the first hot rolling;
superposing the cut structural members to form a laminated structural member;
subjecting the laminated frame member to a second pass of hot rolling; and
and continuously repeating the procedures of cutting, overlapping and hot rolling for N times, wherein N is an integer greater than or equal to zero.
According to one aspect of the invention, the repeating is performed N times until the inter-sheet spacing of the graphene sheets in the enhanced non-ferrous metal is less than or equal to 80 microns,
preferably, the number of repetitions N corresponds to the following formula:
when the number of the metal plates is 2, N is not less than log2 H+3, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is 3, N is not less than log3 H+1, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is m, N is not less than logm HWherein H is the thickness of the original metal plate in mm; m is an integer of 4 or more.
In the invention, the length and width of the graphene sheet in the composite powder are in micron order; the distance between graphene sheets in the finally obtained reinforced non-ferrous metal plate is in a micron order, and at the moment, the graphene dispersion degree is high and uniform. The thickness H is in millimeter level (the thickness H of the composite powder is small and can be ignored), H is derived from the thickness of the original metal plate, H determines the rolling times, and the larger the H is, the more the total rolling times are. For example, in the case of two-plate pack rolling, H is 2mm, and the total number of rolling is at least 6; h is 4mm and the total number of rolling passes is at least 7, according to the above formula.
According to one aspect of the invention, the plurality of metal plates are of comparable thickness.
According to one aspect of the present invention, before the composite powder is applied to the metal plate, the surface of the metal plate is previously treated; preferably, the surface treatment is one or more of grinding, alkali washing, acid washing and scrubbing, and further preferably, the surface treatment is performed to ensure that the metal surface roughness is Ra10 +/-6.
According to one aspect of the invention, the method for applying the composite powder to the surface of the metal plate is performed by: and (3) roller coating, wherein the composite powder is composite powder of metal powder and graphene.
According to an aspect of the present invention, the thickness of the composite powder is 10% or less of the thickness of the metal plate.
According to one aspect of the present invention, the mass content of graphene in the composite powder is 0.2 to 1%, and more preferably 0.3%.
According to one aspect of the invention, if the rolling temperature is below the recrystallization temperature of the metal sheet, the structural member is hot-rolled, then diffusion annealing is carried out and then cutting is carried out; preferably, the annealing temperature of the diffusion annealing is 0.4Tm ± 0.1Tm, where Tm is the melting point of the metal plate. If the rolling temperature is not lower than the recrystallization temperature of the metal sheet, diffusion annealing may not be performed. Can be obtained by looking up the national standard of the metal mark. Generally, when the hot rolling temperature is higher than the recrystallization temperature of the metal sheet, annealing is not required; if the hot rolling temperature is lower than the recrystallization temperature of the metal sheet, diffusion annealing is performed after hot rolling for further improvement.
According to one aspect of the invention, before the cut structural members are stacked, composite powder is applied to the surface of the metal plate between the stacked layers;
preferably, the times C of applying the composite powder is less than or equal to N + 1; and/or
The thickness of the composite powder is less than 10% of the thickness of the metal plate; and/or
The mass content of graphene in the composite powder is 0.2-1%, and more preferably 0.3%; and/or
The surface of the metal plate to which the composite powder is applied is subjected to surface treatment before the composite powder is applied.
According to one aspect of the invention, in the cutting of the hot rolled structural member, the same number of cutting stages is selected according to the number of the supplied metal sheets, and the lengths of the cutting stages are equal.
According to an aspect of the present invention, the hot rolling is performed at a temperature equal to or higher than a recrystallization temperature of the metal plate, at a temperature equal to or lower than a recrystallization temperature of the metal plate, and preferably at a temperature equal to or higher than the recrystallization temperature of the metal plate.
According to an aspect of the present invention, when the number of the plurality of metal plates is 2, the hot rolling reduction amounts are each 40 to 70%, preferably 50%; when the number of the plurality of metal plates is 3, the hot rolling reduction amounts are all 50 to 80%, preferably 66.6%; when the number of the plurality of metal plates is 4, the hot rolling reduction amounts are all 60 to 90%, preferably 75%; when the number of the plurality of metal plates is 5, the hot rolling reduction amount is 70 to 95%, preferably 80%; when the number of the plurality of metal plates is 6 or more, the hot rolling reduction amount is more than 75%, preferably 83.3%, and the thickness after the pack rolling is ensured to be close to the thickness of the single-layer metal plate before the pack rolling.
According to one aspect of the invention, the metal plate is an aluminum plate, a magnesium plate, a nickel plate, a copper plate or an aluminum alloy plate.
In another aspect of the present invention, there is provided a reinforced non-ferrous metal plate, comprising graphene and metal, wherein the content of graphene in the reinforced non-ferrous metal plate is 0.1-1 wt%, preferably 0.3 wt%.
According to one aspect of the invention, the reinforced nonferrous metal plate is prepared by the method.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow diagram of a method of making a reinforced non-ferrous metal plate according to one embodiment of the present invention;
FIG. 2 is a schematic view of a disassembled structure of a metal plate/composite powder/metal plate structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a sheet metal/composite powder/sheet metal structure according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of a first pass hot rolling process according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a composite metal sheet formed after a first pass of hot rolling according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of a composite metal sheet cut and stack process after a first pass of hot rolling according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of a structural member formed after a first pass of hot rolling followed by a clad metal sheet severing and stacking process according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of a second pass hot rolling process according to an embodiment of the present invention;
FIG. 9 is a schematic illustration of a clad metal sheet formed after a second pass of a hot rolling process according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of a composite metal sheet formed after a third hot rolling pass in accordance with an embodiment of the present invention;
FIG. 11 is a schematic illustration of a clad metal sheet formed after an nth pass of a hot rolling process according to one embodiment of the present invention;
wherein, 1-metal plate and 2-composite powder.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various different ways, including by addition, deletion, modification, etc., without departing from the spirit or scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In a first embodiment of the present invention, a method of making a reinforced non-ferrous metal sheet is provided. As shown in fig. 1, a method 100 for manufacturing a reinforced non-ferrous metal plate according to a first embodiment of the present invention includes:
101: providing a plurality of metal plates;
102: applying a composite powder to the surface of the metal sheet;
103: overlapping the metal plates to form a multi-plate structural member;
104: subjecting the multi-plate structural member to a first hot rolling;
105: cutting off the structural part subjected to the first hot rolling;
106: superposing the cut structural members to form a laminated structural member;
107: subjecting the laminated structural member to a second pass of hot rolling; and
108: and continuously repeating the procedures of cutting, overlapping and hot rolling for N times, wherein N is an integer greater than or equal to zero.
According to a preferred embodiment of the present invention, in step 108, the repeating is performed N times until the inter-sheet distance of the graphene sheets in the reinforced non-ferrous metal is less than or equal to 80 micrometers.
According to a preferred embodiment of the present invention, in step 108, the number of repetitions N satisfies the following formula:
when the number of the metal plates is 2, N is not less than log2 H+3, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is 3, N is not less than log3 H+1, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is m, N is not less than logm HWherein H is the thickness of the original metal plate in mm; m is an integer of 4 or more.
The inter-sheet spacing referred to herein includes the inter-sheet spacing of graphene sheets in either direction. In general, the spacing between two adjacent graphene sheets in the horizontal direction is in the order of micrometers, and the distance between two adjacent graphene sheets in the vertical direction is also in the order of micrometers. In the invention, the length and width of the graphene sheet in the composite powder are in micron order; the distance between graphene layers in the finally obtained reinforced nonferrous metal plate is micron-sized, and at the moment, the graphene has high and uniform dispersion degree. The thickness H of the original metal plate is in millimeter level (the thickness H of the composite powder is small and can be ignored), the thickness H from the original metal plate is irrelevant to the previous micron level, H determines the total rolling times, and the larger the H is, the more the total rolling times are. For example, in the case of two-plate pack rolling, H is 2mm, and the total number of rolling is at least 6; h is 4mm and the total number of rolling passes is at least 7, according to the above formula.
According to a preferred embodiment of the present invention, in step 101, as shown in fig. 2, 2 metal plates 1 are provided, and the metal plates may be aluminum plates, copper plates, magnesium plates, nickel plates, aluminum alloy plates, or the like.
According to a preferred embodiment of the invention, the plurality of metal sheets are of comparable thickness.
According to a preferred embodiment of the present invention, as shown in fig. 2 and 3, the method of applying the composite powder to the surface of the metal plate is performed by: and (3) roller coating, wherein the composite powder is composite powder of metal powder and graphene. Fig. 2 is a disassembled view of the laminated metal sheets, and fig. 3 is a view of the laminated metal sheets, forming a multi-sheet structure, such as: metal plate/composite powder/metal plate structures (end riveting or metal seal fixing can be performed on the metal plate-composite powder structures, the metal plate-composite powder-metal plate composite structures (Chinese hamburgers or sandwiches) which are overlapped together are easy to slide, can be fixed by riveting and seals, and become an integral material after rolling and then remove the additives). According to the desired dimensions for industrial use of the reinforced non-ferrous metal sheet products of the present invention, for example thickness H +1/2H (H being the thickness of the applied composite powder), a metal sheet of length L and thickness H is selected. For example: when two metal sheets are rolled together, two metal sheets with the thickness of 2mm (the thickness h of the applied composite powder can be basically ignored) are overlapped for 4mm, the pressing is 50% of the thickness of the metal sheets, the length of the metal sheets is changed into a double plate, the metal sheets are overlapped after being cut off and are also 4mm thick and long, the metal sheets are not cut off and overlapped after the last rolling, and at the moment, the thickness of the reinforced non-ferrous metal plate is 2 mm. When three metal plates are rolled, three metal plates with the thickness of 2mm (the thickness of the applied composite powder is basically negligible) are overlapped for 6mm, the downward pressing 2/3 means that the metal plates are pressed to be 2mm in thickness, the length of the metal plates is changed into three times of the original plate, the three metal plates are cut into three sections with equal length and then overlapped together, or the three metal plates are kept to be 6mm in length and are not cut and overlapped after the last rolling, and at the moment, the thickness of the reinforced nonferrous metal plate is 2 mm.
According to a preferred embodiment of the invention, the thickness of the composite powder is less than 10% of the thickness of the metal sheet, for example: 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, etc.; typically below 5%, for example: 5%, 4%, 3%, 2%, 1%, etc.
According to a preferred embodiment of the present invention, the graphene content in the composite powder is 0.2 to 1% by mass, for example: 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc.; further preferably 0.3%.
According to a preferred embodiment of the present invention, before the composite powder is applied to the metal plate, the surface of the metal plate is previously treated; preferably, the surface treatment is one or more of grinding, alkali washing, acid washing and scrubbing, and further preferably, the surface treatment is performed to ensure that the metal surface roughness is Ra10 +/-6 mu m. The main purposes of treating the surface of the metal plate are to remove oil and rust, remove impurity oxide skin and adjust the roughness of the surface of the metal plate so that the composite powder can be better contacted with the surface of the metal plate.
According to a preferred embodiment of the present invention, in step 104, as shown in fig. 4, the multi-plate structural member is subjected to a first hot rolling, which is performed at 300 ℃ -. In this example, the pressing amount is 50%, and a reinforced nonferrous metal plate having a thickness of H +1/2H and an elongation of 1 time (2L) is obtained (as shown in FIG. 5).
According to a preferred embodiment of the invention, said hot rolling is performed at a temperature above the recrystallization temperature of the metal sheet, at a temperature at or below the recrystallization temperature of the metal sheet, preferably above the recrystallization temperature of the metal sheet; the pressing amount is more than 40%. According to a preferred embodiment of the present invention, when the number of the plurality of metal plates provided is 2, the hot rolling reduction amounts are each 40 to 70%, preferably 50%; when the number of the plurality of metal plates is 3, the cold rolling pressing amount is 50-80%, preferably 66.6%; when the number of the plurality of metal plates is 4, the cold rolling pressing amount is 60-90%, preferably 75%; when the number of the plurality of metal plates is 5, the cold rolling pressing amount is 70-95%, preferably 80%; when the number of the plurality of metal plates is more than 6, the cold rolling reduction amount is more than 75%, preferably 83.3%, and the plate thickness after the pack rolling is close to the plate thickness of the single-layer metal plate before the pack rolling.
According to a preferred embodiment of the invention, if the rolling temperature is below the recrystallization temperature of the metal sheet, the hot rolling of the structural member is followed by diffusion annealing and then cutting; preferably, the annealing temperature of the diffusion annealing is 0.4Tm +/-0.1 Tm, wherein Tm is the melting point of the metal plate and can be obtained by consulting the national standard of the alloy mark. Generally, when the hot rolling temperature is higher than the recrystallization temperature of the metal sheet, annealing is not required; if the hot rolling temperature is lower than the recrystallization temperature of the metal sheet, the diffusion annealing is performed before the cutting process is performed in step 105 for better effect.
According to a preferred embodiment of the present invention, in step 106, as shown in fig. 6, before the cut structural members are stacked, composite powder is applied to the surface of the metal plates between the stacked layers; the stack is then formed into a laminated structure as shown in figure 7.
According to a preferred embodiment of the invention, the number of times C of application of the composite powder is less than or equal to N +1, where N is the number of successive repetitions.
According to a preferred embodiment of the invention, the composite powder can be applied to the surface of the metal plate before the last rolling without applying the composite powder to the surface of the metal plate before the cut structural parts are overlapped, so that the composite powder is more uniformly distributed in the prepared reinforced nonferrous metal.
According to a preferred embodiment of the invention, the thickness of the composite powder is 10% or less of the thickness of the metal sheet, for example: 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, etc.; typically below 5%, for example: 5%, 4%, 3%, 2%, 1%, etc.
According to a preferred embodiment of the present invention, the graphene content in the composite powder is 0.2 to 1 wt%, for example: 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1 wt%, etc.; further preferably 0.3 wt%.
According to a preferred embodiment of the present invention, the surface of the metal plate to which the composite powder is applied is subjected to a surface treatment before the composite powder is applied.
According to a preferred embodiment of the present invention, in the step of cutting the hot rolled structural member, the same number of segments are selected according to the number of the metal sheets to be supplied, and the segments are equal in length. For example, when 2 metal sheets are provided, the hot rolled structural member is cut into 2 pieces; when 3 metal sheets are provided, the hot rolled structure is cut into 3 sections, and so on.
According to a preferred embodiment of the present invention, in step 107, as shown in fig. 8, the laminated structural member is subjected to a second hot rolling pass to obtain a structural member after the second hot rolling pass, as shown in fig. 9. As shown in fig. 10, the laminated structure is subjected to a third hot rolling to obtain a structure. As shown in fig. 11, when the number of the metal plates provided is two, the thickness of the composite powder applied between the laminations at each time is H, and the thickness of the metal plate provided is H, the thickness of the structural member after the n-th hot rolling is H + n/2H. After multi-pass hot rolling, the composite powder is uniformly dispersed in the metal, the combination of graphene in the composite powder and the metal is realized, and the reinforced nonferrous metal plate is obtained.
According to the characteristics of graphene and the characteristic that copper powder can be alloyed with aluminum, on one hand, by utilizing the fact that graphene sheets can be attached to object points on the surfaces of copper powder particles, copper has the tendency of promoting the graphitization of amorphous carbon, and the graphene is favorably stored; on the other hand, copper and aluminum have many intermetallic phase transformation possibilities, and both can be metallurgically bonded at various copper and aluminum concentrations. The graphene-copper composite powder reinforced aluminum-based alloy is prepared by improving the accumulated rolling process principle in the field of metal nanocrystallization, the graphene is prevented from being damaged in the preparation process, the graphene is dispersed in the solid state rheology of metal, and meanwhile, the graphene and the aluminum-based alloy are subjected to cold welding, so that a real novel graphene-aluminum alloy material is finally obtained. The reinforced nonferrous metal plate disclosed by the invention is characterized in that graphene is uniformly distributed and enough in quantity, and the quantity of the graphene contained in the reinforced nonferrous metal plate is about 3 per mill, and can reach 1 percent at most. According to one embodiment of the invention, the graphene in the reinforced non-ferrous metal plate disclosed by the invention is tightly meshed with the aluminum interface, the graphene in the graphene-aluminum alloy is mainly distributed along the rolling direction in parallel with the thin film, and the graphene-aluminum alloy is free from looseness and pores, so that the tensile strength of the obtained alloy is improved, and the plasticity is kept without reduction. The method disclosed by the invention has the advantages of low process difficulty, easiness in control of process parameters, safety and high production efficiency, and can be directly amplified to prepare large-sized workpieces.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (25)
1. A method for preparing a reinforced non-ferrous metal plate, comprising:
providing a plurality of metal plates;
applying a composite powder to the surface of the metal sheet;
overlapping the metal plates to form a multi-plate structural member;
subjecting the multi-plate structural member to a first hot rolling;
cutting off the structural part subjected to the first hot rolling;
superposing the cut structural members to form a laminated structural member;
subjecting the laminated structural member to a second pass of hot rolling; and
continuously repeating the procedures of cutting, overlapping and hot rolling for N times, wherein N is an integer greater than or equal to zero;
the number of repetitions N corresponds to the following formula:
when the number of the metal plates is 2, N is not less than log2 H+3, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is 3, N is not less than log3 H+1, wherein H is the thickness of the original metal plate in mm;
when the number of the metal plates is m, N is not less than logm HWherein H is the thickness of the original metal plate, and the unit is mm; m is an integer of 4 or more.
2. The method of producing reinforced non-ferrous metal sheet according to claim 1, wherein the repeating N times to the graphene sheets in the reinforced non-ferrous metal has a sheet spacing of 80 μm or less.
3. The method of producing a reinforced non-ferrous metal sheet as claimed in claim 1 wherein the plurality of metal sheets are of comparable thickness.
4. The method for producing a reinforced non-ferrous metal sheet according to claim 1, wherein the surface of the metal sheet is treated in advance before the composite powder is applied to the metal sheet, and the surface treatment is performed so that the metal surface roughness is Ra10 ± 6 μm.
5. The method for preparing a reinforced non-ferrous metal plate according to claim 4, wherein the surface treatment is one or a combination of grinding, alkali washing, acid washing and scrubbing.
6. The method for producing a reinforced non-ferrous metal sheet according to claim 1, characterized in that said application of the composite powder to the surface of the metal sheet is carried out by: and (3) roller coating, wherein the composite powder is composite powder of metal powder and graphene.
7. The method for preparing a reinforced non-ferrous metal plate as claimed in claim 6, wherein the graphene in the composite powder is 0.2-1% by mass.
8. The method for preparing a reinforced non-ferrous metal plate as claimed in claim 7, wherein the graphene content in the composite powder is 0.3% by mass.
9. The method for manufacturing a reinforced non-ferrous metal sheet as claimed in claim 1, wherein the thickness of the composite powder is 10% or less of the thickness of the metal sheet.
10. The method for producing a reinforced nonferrous metal sheet according to claim 1, wherein the hot rolling of the structural member is followed by the diffusion annealing and then the cutting if the rolling temperature is below the recrystallization temperature of the metal sheet.
11. The method for manufacturing a reinforced non-ferrous metal plate as claimed in claim 10, wherein the annealing temperature of the diffusion annealing is 0.4Tm ± 0.1Tm, wherein Tm is the melting point of the metal plate.
12. The method for producing a reinforced non-ferrous metal sheet according to any one of claims 1 to 11 wherein the surface of the metal sheet between the laminations is applied with a composite powder before the superposition of the cut structural members.
13. The method for producing a reinforced non-ferrous metal sheet according to claim 12, wherein the number of times C of applying the composite powder is not more than N + 1.
14. The method of producing a reinforced non-ferrous metal sheet as claimed in claim 12, wherein the thickness of the composite powder is 10% or less of the thickness of the metal sheet.
15. The method for preparing a reinforced non-ferrous metal plate as claimed in claim 12, wherein the graphene is contained in the composite powder in an amount of 0.2-1% by mass.
16. The method for preparing a reinforced non-ferrous metal plate as claimed in claim 15, wherein the graphene is contained in the composite powder by 0.3% by mass.
17. The method of manufacturing a reinforced non-ferrous metal plate as claimed in claim 12 wherein the surface of the metal plate to which the composite powder is applied is surface treated prior to the application of the composite powder.
18. The method of manufacturing a reinforced nonferrous metal plate according to claim 1, wherein the same number of the cutting stages is selected according to the number of the metal plates to be supplied in the cutting of the hot rolled structural member, and the respective stages are equal in length.
19. The method for producing a reinforced non-ferrous metal sheet as claimed in claim 1,
the hot rolling is performed at a temperature equal to or higher than a recrystallization temperature of the metal sheet, at a recrystallization temperature of the metal sheet, or at a temperature lower than the recrystallization temperature of the metal sheet.
20. The method of producing a reinforced non-ferrous metal sheet as claimed in claim 19 wherein the rolling is performed above the recrystallization temperature of the metal sheet.
21. The method for producing a reinforced nonferrous metal sheet according to claim 1, wherein the hot rolling reduction amounts are 40 to 70% in each case when the number of the plurality of metal sheets is 2; when the number of the plurality of metal plates is 3, the hot rolling reduction amount is 50-80%; when the number of the plurality of metal plates is 4, the hot rolling reduction amount is 60-90%; when the number of the plurality of metal plates is 5, the hot rolling reduction amount is 70-95%; when the number of the plurality of metal plates is 6 or more, the hot rolling reduction amounts are all more than 75%.
22. The method of producing a reinforced non-ferrous metal sheet as claimed in claim 21,
when the number of the plurality of metal plates is 2, the hot rolling reduction amount is 50%; when the number of the plurality of metal plates is 3, the hot rolling reduction amount is 66.6 percent; when the number of the plurality of metal plates is 4, the hot rolling reduction amount is 75%; when the number of the plurality of metal plates is 5, the hot rolling reduction amount is 80%; when the number of the plurality of metal plates is 6 or more, the hot rolling reduction amounts are all more than 83.3%.
23. The method for manufacturing a reinforced non-ferrous metal plate according to claim 1, wherein the metal plate is an aluminum plate, a magnesium plate, a nickel plate, a copper plate or an aluminum alloy plate.
24. A reinforced non-ferrous metal sheet, prepared by the method of any one of claims 1 to 23, comprising graphene and a metal, wherein the graphene content in the reinforced non-ferrous metal sheet is 0.1 to 1 wt%.
25. The reinforced non-ferrous metal sheet according to claim 24, wherein the graphene content in the reinforced non-ferrous metal sheet is 0.3 wt.%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134257.4A CN110125180B (en) | 2018-02-09 | 2018-02-09 | Reinforced nonferrous metal plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134257.4A CN110125180B (en) | 2018-02-09 | 2018-02-09 | Reinforced nonferrous metal plate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110125180A CN110125180A (en) | 2019-08-16 |
| CN110125180B true CN110125180B (en) | 2021-03-23 |
Family
ID=67567958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134257.4A Active CN110125180B (en) | 2018-02-09 | 2018-02-09 | Reinforced nonferrous metal plate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110125180B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229833B (en) * | 2020-02-08 | 2022-05-10 | 西北工业大学太仓长三角研究院 | Method for preparing laminated metal composite material by multilayer-cumulative pack rolling |
| CN112695179B (en) * | 2020-12-29 | 2022-09-09 | 瓯锟科技温州有限公司 | Preparation method of graphene metal composite plate |
| CN113088840A (en) * | 2021-03-29 | 2021-07-09 | 武汉大学 | Preparation method of aluminum alloy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019292B (en) * | 2010-11-11 | 2012-09-05 | 东北大学 | Preparation method of titanium-steel composite plate thin strip |
| CN104862508B (en) * | 2015-05-15 | 2016-09-28 | 中国航空工业集团公司北京航空材料研究院 | A kind of preparation method of aluminum base graphene composite material |
| CN106702193B (en) * | 2016-12-02 | 2018-03-06 | 昆明理工大学 | A kind of preparation method of graphene/aluminum composite |
| CN107323030A (en) * | 2017-06-19 | 2017-11-07 | 常州大学 | A kind of light metal-based laminar composite and preparation method thereof |
-
2018
- 2018-02-09 CN CN201810134257.4A patent/CN110125180B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110125180A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110125179B (en) | Graphene composite metal and preparation method thereof | |
| CN110125181B (en) | Method for preparing alkene alloy by accumulative pack rolling process and alkene alloy thereof | |
| Lee et al. | Microstructures and mechanical properties of 6061 aluminum alloy processed by accumulative roll-bonding | |
| Sheng et al. | Crack behavior in Mg/Al alloy thin sheet during hot compound extrusion | |
| Hosseini et al. | High-strength, high-conductivity ultra-fine grains commercial pure copper produced by ARB process | |
| Whang | Nanostructured metals and alloys: processing, microstructure, mechanical properties and applications | |
| El Mahallawy et al. | Microstructure evolution and mechanical properties of Al/Al–12% Si multilayer processed by accumulative roll bonding (ARB) | |
| Tiwari et al. | Evaluation of mechanical and thermal properties of bilayer graphene reinforced aluminum matrix composite produced by hot accumulative roll bonding | |
| CN110125180B (en) | Reinforced nonferrous metal plate and preparation method thereof | |
| Naseri et al. | An alternative method for manufacturing Al/B4C/SiC hybrid composite strips by cross accumulative roll bonding (CARB) process | |
| Tayyebi et al. | A novel two-step method for producing Al/Cu functionally graded metal matrix composite | |
| Alizadeh et al. | Investigation of grain refinement in Al/Al2O3/B4C nano-composite produced by ARB | |
| Göken et al. | Tailoring nanostructured, graded, and particle‐reinforced Al laminates by accumulative roll bonding | |
| Alizadeh et al. | Fabrication of Al/Cup composite by accumulative roll bonding process and investigation of mechanical properties | |
| Meng et al. | Microstructures and formation mechanism of W–Cu composite coatings on copper substrate prepared by mechanical alloying method | |
| Lu et al. | Enhanced mechanical properties and rolling formability of fine-grained Mg–Gd–Zn–Zr alloy produced by equal-channel angular pressing | |
| Khoramkhorshid et al. | Microstructure and mechanical properties of Al-based metal matrix composites reinforced with Al84Gd6Ni7Co3 glassy particles produced by accumulative roll bonding | |
| Mu et al. | The role of interfacial reaction on the dynamic mechanical response in graphene nano-flake/Ti composites | |
| Liu et al. | Fabrication of Al/Al3Mg2 composite by vacuum annealing and accumulative roll-bonding process | |
| Wang et al. | Fracture toughness, wear, and microstructure properties of aluminum/titanium/steel multi-laminated composites produced by cross-accumulative roll-bonding process | |
| Li et al. | Deformation behavior and crack propagation on interface of Al/Cu laminated composites in uniaxial tensile test | |
| Kumar et al. | Influence of hot rolling on friction and wear behaviour of Al6061-ZrB2 in-situ metal matrix composites | |
| Liu et al. | Interfacial characteristic of multi-pass caliber-rolled Mg/Al compound castings | |
| Zhang et al. | A comprehensive DFT study on the thermodynamic and mechanical properties of L12-Al3Ti/Al interface | |
| Yaghtin et al. | Processing of nanostructured metallic matrix composites by a modified accumulative roll bonding method with structural and mechanical considerations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |