CN111672906B - High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof - Google Patents
High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof Download PDFInfo
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- CN111672906B CN111672906B CN202010581323.XA CN202010581323A CN111672906B CN 111672906 B CN111672906 B CN 111672906B CN 202010581323 A CN202010581323 A CN 202010581323A CN 111672906 B CN111672906 B CN 111672906B
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- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- 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
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- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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- C—CHEMISTRY; METALLURGY
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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- 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
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Abstract
The invention discloses a high-entropy alloy particle reinforced metal matrix composite material and a preparation method thereof, and the preparation method comprises the following steps; 1. taking two metal plates with the same size, uniformly coating high-entropy alloy particles on the surfaces of the metal plates, and then sequentially stacking, riveting and rolling the two metal plates to form a composite plate; 2. performing accumulative roll welding on the composite plate, and cutting, stacking and riveting each pass of the accumulative roll welding until the thickness of the laminated layer reaches the required thickness to form a composite material; 3. and carrying out heat treatment on the composite material after the accumulative stitch welding is finished, so that a diffusion layer is formed between the high-entropy alloy particles and the metal plate, and obtaining the high-entropy alloy particle reinforced metal matrix composite material. The high-entropy alloy particle reinforced metal matrix composite material with improved strength and good exertion of plasticity and toughness is obtained.
Description
Technical Field
The invention belongs to the field of metal-based composite materials, and relates to a high-entropy alloy particle reinforced metal-based composite material and a preparation method thereof.
Background
The particle reinforced metal-based composite material is a heterogeneous mixture which takes metal and alloy thereof as a matrix and takes metal or nonmetal particles as a reinforcing phase. The key to the superior performance of the composite material is whether good interfacial bonding is produced at the interface between the matrix phase and the reinforcement phase. At present, the main components frequently used for the particle-reinforced metal matrix composite reinforcement include silicon carbide particles, boron nitride particles and the like, most of which are non-metallic particles, and are difficult to form a stable and effective metallurgical interface with metal particles. In recent years, metal-based reinforcements, such as magnesium-based, iron-based, zirconium-based amorphous materials and the like, have been developed to form a stable and effective bonding interface with a metal matrix, but due to the limitation of the crystallization temperature of the amorphous material, the sintering process is difficult to be performed at a higher temperature, which affects the densification of the material, whereas high-entropy alloys containing various components have good bonding with the metal matrix and can realize the densification of composite materials.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-entropy alloy particle reinforced metal matrix composite material and a preparation method thereof, so that the high-entropy alloy particle reinforced metal matrix composite material with improved strength and good plasticity and toughness is obtained.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a preparation method of a high-entropy alloy particle reinforced metal matrix composite material comprises the following steps;
step one, taking two metal plates with the same size, uniformly coating high-entropy alloy particles on the surfaces of the metal plates, and then sequentially stacking, riveting and rolling the two metal plates to form a composite plate;
step two, performing accumulative roll welding on the composite plate, and cutting, stacking and riveting each pass of the accumulative roll welding until the thickness of the laminated layer reaches the required thickness to form the composite material;
and step three, carrying out heat treatment on the composite material after the accumulative stitch welding is finished, so that a diffusion layer is formed between the high-entropy alloy particles and the metal plate, and obtaining the high-entropy alloy particle reinforced metal matrix composite material.
Preferably, in the first step, before the high-entropy alloy particles are coated, the metal plate is subjected to surface treatment until fresh metal is exposed on the surface.
Further, the surface treatment step is:
step 1, cleaning oil stains on the surface of an aluminum plate by using acetone;
and 3, cleaning the surface by using a steel wire brush to expose fresh metal on the surface.
Preferably, in the step one, the high-entropy alloy particles are coated on the surface of the metal plate in a slurry coating or slurry spraying mode.
Preferably, the rolling is carried out by cold rolling, and the cold rolling temperature is 20-500 ℃.
Preferably, the number of pass of the cumulative lap welding is 4-20.
Preferably, the temperature for the heat treatment is 500-.
Preferably, the metal plate is made of one or more of Al, Mg, Cu, Ti, Ni, Fe, Au and Ag.
Preferably, the high-entropy alloy particles are selected from Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Mo elements.
A high-entropy alloy particle reinforced metal matrix composite comprises a high-entropy alloy particle layer and a metal plate which are sequentially overlapped in a staggered mode.
Compared with the prior art, the invention has the following beneficial effects:
the method carries out accumulative overlaying and rolling welding on the metal plate and the high-entropy alloy particle layer, the composite plate subjected to accumulative overlaying and rolling welding has extremely high density, the high-entropy alloy particles and the metal plate layer are alternated, then the composite plate is obtained after accumulative overlaying and rolling welding and heat treatment, in the heat treatment process, the high-entropy alloy reinforcement and the metal plate are subjected to good phase diffusion, excellent interface bonding strength is obtained, the mechanical bonding and infiltration and dissolution bonding modes of the high-entropy alloy reinforcement and the metal plate are realized, the process flow is greatly simplified, the production period is shortened, and the production efficiency is greatly improved.
Furthermore, the composite material can be densified in the preparation process at low temperature by rolling at low temperature, the deformation amount is large in the forming process, the crystal grains of the metal matrix are finer, and the distribution of the high-entropy alloy particle reinforcement is more uniform.
Furthermore, the thickness of the lamination is controlled by controlling the pass of the accumulated overlaying rolling welding, so that the operation is simple and the economy is excellent.
Furthermore, the mode of adding the cushion block and adjusting the flattening roller spring is adopted, so that the metal plate can be prevented from swinging left and right in the rolling process when the metal plate is too thin in the rolling process.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a metallographic microstructure of example 1 of the present invention before heat treatment;
FIG. 3 is a metallographic microstructure of the sample of example 1 of the present invention after heat treatment;
FIG. 4 is the distribution of elements after heat treatment in example 1 of the present invention.
Wherein: 1-high entropy alloy particles; 2-metal plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the invention is a flow chart of a preparation method of the sandwich-like structure high-entropy alloy particle reinforced metal matrix composite material, and the preparation method comprises the following steps:
step one, two metal plates 2 with the same size are taken, a metal sheet is adopted in the embodiment, and the metal plates 2 are subjected to surface treatment, wherein the surface treatment comprises the following steps:
step 1, cleaning oil stains on the surface of an aluminum plate by using acetone;
and 3, cleaning the surface by using a steel wire brush to expose fresh metal on the surface.
The high-entropy alloy particles 1 are uniformly coated on the surfaces of the metal plates 2, slurry coating or slurry spraying is adopted as a spraying mode, then the two metal plates 2 are sequentially stacked, riveted and rolled to form the composite plate, and cold rolling is adopted for rolling.
The riveting finger is used for punching two metal sheets with the same size at the same position of one end, and riveting the two metal sheets at the position of the punched hole by using a rivet made of a metal sheet material.
The metal plate 2 is made of one or more of Al, Mg, Cu, Ti, Ni, Fe, Au, and Ag.
The high-entropy alloy particles 1 are selected from Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Mo elements.
And step two, performing accumulative roll welding on the composite plate, wherein each pass of the accumulative roll welding is subjected to middle cutting, stacking and riveting until the thickness of the laminated layer reaches the required thickness, so as to form the composite material. The thickness of the lamination is controlled by the rolling pass in the accumulative roll welding process, the rolling pass is 4-20 passes according to different requirements of the thickness of the lamination, and the mechanical combination of the high-entropy alloy particles 1 and the metal plate 2 is realized. When the metal plate 2 is too thin in the rolling process, a cushion block is added at the bottom of the metal plate 2, the spring of the flattening roller is adjusted, when the distance between the flattening rollers is too large, the spring of the flattening roller is screwed, and when the distance between the flattening rollers is too small, the spring of the flattening roller is loosened.
And step three, carrying out heat treatment on the composite material after the accumulated stitch welding is finished, and selectively realizing two combination modes of mechanical combination, mechanical combination-infiltration and dissolution. The temperature during heat treatment is 500-.
Example 1
The high-entropy alloy particles 1 are made of AlCoNiCrFe, the metal plates 2 are made of 5052Al, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared. FIG. 1 is an evolution schematic diagram and a process flow chart of the preparation of the sandwich-structure-imitated high-entropy alloy particle reinforced aluminum matrix composite material.
Firstly, cutting an aluminum plate with the length, width and thickness of 400 multiplied by 100 multiplied by 1.5mm into two pieces with the same size of 200 multiplied by 100 multiplied by 1.5mm, treating the surface of the aluminum plate, cleaning oil stains on the surface of the aluminum plate by adopting acetone, soaking the surface of the material cleaned by the acetone in alkaline liquor for 30 minutes, washing and drying the alkaline liquor by adopting 2 percent NaOH solution, and finally cleaning the surface by using a steel wire brush to expose fresh metal on the surface. Then, the AlCoNiCrFe high-entropy alloy particle powder with the particle size of 38-75 mu m is evenly sprayed on 2 aluminum plates by a spray gun according to the usage amount of 10 percent of volume fraction, then the two aluminum plates are punched at the same position of one end, and the two aluminum plates are riveted at the position of the hole by a rivet made of 5052 Al. The resulting composite panel was rolled at 350 c, at which time the materials had been joined together, as noted for pass 1. After finishing one-time rolling, cutting the two parts into two identical parts from the middle, after surface treatment, stacking, riveting and rolling again, and marking as 2 nd pass. And controlling the rolling pass in an accumulative rolling welding mode to obtain composite materials with different lamination sizes, and then placing the accumulative rolling welded composite plates in a heat treatment furnace to enable element diffusion to occur between the high-entropy alloy particle reinforcement and the aluminum matrix to form a good interface structure. Wherein, when the rolling pass is 5 passes, sampling and carrying out heat treatment, the heating temperature in the heat treatment process is 500 ℃, the heat preservation time is 24 hours, the samples before and after heat treatment are respectively carried out the organizational structure analysis, and the performance is analyzed through a mechanical performance experiment.
The high-entropy alloy particle reinforced aluminum-based composite material with the imitated sandwich structure prepared by the steps is shown in fig. 2, which is a metallographic microscopic picture of the composite material which is not subjected to heat treatment after being subjected to cumulative rolling at 350 ℃, when the magnification is 500, the high-entropy alloy particle phase and a metal plate are not diffused, and a diffusion layer is not formed, and through a mechanical property experiment, the Young modulus of the obtained composite material is 76GPa, and the hardness is 1.42 GPa. FIG. 3 is a metallographic microscopic image of the composite material which is subjected to heat preservation at 500 ℃ for 24 hours after accumulative rolling at 350 ℃, and it can be seen that a diffusion layer is formed between the high-entropy alloy particles 1 and the metal plate 2, and the obtained composite material has a Young modulus of 80GPa and a hardness of 1.61 GPa. Fig. 4 shows that the composite material subjected to heat preservation at 500 ℃ for 24 hours after accumulative rolling at 350 ℃ is measured by using an energy spectrometer, and high-entropy alloy elements and matrix elements exist in a diffusion layer between the high-entropy alloy particles 1 and the metal plate 2, so that diffusion between the matrix and the reinforcement is realized after heat treatment, and effective interface bonding is achieved.
Example 2
The high-entropy alloy particles 1 are made of AlCoNiCrFe, the metal plates 2 are made of 5052Al, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that in the surface treatment, the metal plate 2 is soaked in a 2% NaOH solution for 20 minutes, the rolling pass is 10 passes, the rolling temperature is 320 ℃, the heat treatment temperature is 530 ℃, and the heat preservation time is 6 hours, so that the sandwich-structure-imitated high-entropy alloy particle reinforced aluminum matrix composite is prepared.
Example 3
The high-entropy alloy particles 1 are made of AlCoNiCrFe, the metal plates 2 are made of 5052Al, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that in the surface treatment, the metal plate 2 is soaked in a 2% NaOH solution for 20 minutes, the rolling pass is 10 passes, the rolling temperature is 20 ℃, the heat treatment temperature is 530 ℃, and the heat preservation time is 6 hours, so that the sandwich-structure-imitated high-entropy alloy particle reinforced aluminum matrix composite is prepared.
Example 4
The high-entropy alloy particles 1 are made of AlCoNiCrFe, the metal plates 2 are made of 5052Al, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that the metal plate 2 is soaked in a 2% NaOH solution for 40 minutes, the rolling pass is 15 passes, the rolling temperature is 380 ℃, the heat treatment temperature is 560 ℃, and the heat preservation time is 24 hours, so that the sandwich-structure-simulated high-entropy alloy particle reinforced aluminum-based composite material is prepared.
Example 5
The high-entropy alloy particles 1 adopt CoNiFeCrAl0.6Ti0.4The metal plate 2 is 5052Al, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
This example is similar to example 1 except that the high entropy alloy particles 1 in the feedstock are CoNiFeCrAl0.6Ti0.4And preparing the sandwich-structure-imitated high-entropy alloy particle reinforced aluminum matrix composite.
Example 6
The high-entropy alloy particles 1 adopt Al0.3CoCrFeNi, pure Cu is adopted as the metal plate 2, and the high-entropy alloy particle reinforced metal matrix with the imitation sandwich structure is preparedA composite material.
This example is similar to example 1, except that the high-entropy alloy particles 1 in the raw material are Al0.3The CoCrFeNi, the metal plate 2 is pure Cu, the temperature during the pack rolling is 400 ℃, the heat preservation is carried out for 12h at 950 ℃ during the heat treatment, and the high-entropy alloy particle reinforced metal matrix composite material with the imitated sandwich structure is prepared.
Example 7
The high-entropy alloy particles 1 are made of CrMnFeCoMoW, and the metal plates 2 are made of pure Ti, so that the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that the high-entropy alloy particles 1 in the raw materials are CrMnFeCoMoW, the metal plate 2 is made of pure Ti, the temperature during the pack rolling is 400 ℃, and the temperature is kept at 1000 ℃ for 12h during the heat treatment, so as to prepare the sandwich-structure-imitated high-entropy alloy particle reinforced metal-based composite material.
Example 8
The high-entropy alloy particles 1 are made of AlMgLiCuZn, the metal plates 2 are made of pure Mg, and the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that the high-entropy alloy particles 1 in the raw materials are AlMgLiCuZn, the metal plate 2 is pure Mg, the temperature during the pack rolling is 200 ℃, and the temperature is kept at 550 ℃ for 12h during the heat treatment, so that the sandwich-structure-simulated high-entropy alloy particle reinforced metal matrix composite material is prepared.
Example 9
The high-entropy alloy particles 1 are made of CrMnFeCoNi, and the metal plates 2 are made of NiAl alloy, so that the sandwich-structure-imitated high-entropy alloy particle reinforced metal matrix composite material is prepared.
The embodiment is similar to the embodiment 1, except that the high-entropy alloy particles 1 in the raw materials are CrMnFeCoNi, the metal plate 2 is made of NiAl alloy, the temperature during the pack rolling is 500 ℃, and the temperature is kept at 1200 ℃ for 12h during the heat treatment, so as to prepare the sandwich-structure-imitated high-entropy alloy particle reinforced metal-matrix composite material.
The above examples are preferred examples of the present invention, and other embodiments of the present invention are possible, for example, the raw material metal may be one or more selected from Al, Mg, Cu, Ti, Ni, Fe, Au, and Ag, and the constituent elements of the high-entropy alloy particles may be any one or more selected from Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, W, and Mo. The present invention can be implemented by changing these conditions or the parameter conditions in the implementation process, which is very easy for those skilled in the art.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A preparation method of a high-entropy alloy particle reinforced metal matrix composite is characterized by comprising the following steps;
step one, two metal plates (2) with the same size are taken, high-entropy alloy particles (1) are uniformly coated on the surfaces of the metal plates (2), and then the two metal plates (2) are sequentially stacked, riveted and rolled to form a composite plate;
step two, performing accumulative roll welding on the composite plate, and cutting, stacking and riveting each pass of the accumulative roll welding until the thickness of the laminated layer reaches the required thickness to form the composite material;
step three, performing heat treatment on the composite material after the accumulated stitch welding is completed, wherein the temperature during the heat treatment is 500-1200 ℃, and the heat preservation time is 6-24 hours, so that a diffusion layer is formed between the high-entropy alloy particles (1) and the metal plate (2), and the high-entropy alloy particle (1) reinforced metal-based composite material is obtained; the high-entropy alloy particles (1) are formed by selecting and matching Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Mo elements.
2. A method for preparing a high-entropy alloy particle-reinforced metal matrix composite according to claim 1, wherein in the first step, before the high-entropy alloy particles (1) are coated, the metal plate (2) is subjected to surface treatment until fresh metal is exposed on the surface.
3. A method for preparing a high-entropy alloy particle-reinforced metal matrix composite according to claim 2, wherein the surface treatment comprises the steps of:
step 1, cleaning oil stains on the surface of a metal plate (2) by using acetone;
step 2, soaking the surface of the metal plate (2) cleaned by acetone in alkali liquor for 20-40 minutes, wherein the alkali liquor adopts 2% NaOH solution, and then washing and drying the alkali liquor by using deionized water;
and 3, cleaning the surface by using a steel wire brush to expose fresh metal on the surface.
4. The preparation method of the high-entropy alloy particle-reinforced metal matrix composite material as claimed in claim 1, wherein in the first step, the high-entropy alloy particles (1) are coated on the surface of the metal plate (2) in a slurry coating or slurry spraying mode.
5. A method for preparing a high-entropy alloy particle-reinforced metal matrix composite material as claimed in claim 1, wherein cold rolling is performed at a temperature of 20-500 ℃.
6. A preparation method of a high-entropy alloy particle-reinforced metal matrix composite material as claimed in claim 1, wherein the pass of the cumulative lap-welding is 4-20 passes.
7. A method for producing a high entropy alloy particle reinforced metal matrix composite material according to claim 1, wherein the metal plate (2) is made of one or more of Al, Mg, Cu, Ti, Ni, Fe, Au and Ag.
8. A high entropy alloy particle reinforced metal matrix composite, characterized in that it is made by the method according to any one of claims 1 to 7, comprising a layer of high entropy alloy particles and a metal sheet (2) in a staggered overlapping sequence.
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| CN112547798B (en) * | 2020-10-30 | 2022-08-16 | 南京理工大学 | Method for preparing high-strength heterogeneous high-entropy alloy through accumulative pack rolling |
| CN112517637B (en) * | 2020-12-18 | 2023-03-24 | 西安建筑科技大学 | Reinforced and toughened metal-based layered composite material and preparation method thereof |
| CN113322392B (en) * | 2021-05-18 | 2022-04-29 | 武汉大学 | Preparation method of nano silicon carbide particle reinforced aluminum alloy matrix composite material |
| CN114872392B (en) * | 2022-05-30 | 2024-05-03 | 湘潭大学 | High-strength degradable Zn-based composite material and preparation method and application thereof |
| CN116618434B (en) * | 2023-05-12 | 2024-03-26 | 华中科技大学 | High-entropy alloy layered composite material and preparation method thereof |
| CN116871322B (en) * | 2023-09-08 | 2024-02-27 | 太原理工大学 | Preparation method of particle reinforced layered metal composite plate based on multipass rolling forming |
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| CN108914041A (en) * | 2018-06-28 | 2018-11-30 | 江苏理工学院 | A kind of high temperature resistant hydrochloric acid corrosion resistant synthetic furnace composite material and preparation method |
| CN109016728A (en) * | 2018-08-22 | 2018-12-18 | 太原理工大学 | Fe-Cu-HEA high based on clam shell feature is tough bionic composite material and preparation method thereof |
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