CN116676499A - Preparation method of high-conductivity aluminum alloy - Google Patents
Preparation method of high-conductivity aluminum alloy Download PDFInfo
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- CN116676499A CN116676499A CN202310461865.7A CN202310461865A CN116676499A CN 116676499 A CN116676499 A CN 116676499A CN 202310461865 A CN202310461865 A CN 202310461865A CN 116676499 A CN116676499 A CN 116676499A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000011282 treatment Methods 0.000 claims abstract description 75
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000003723 Smelting Methods 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- 239000000155 melt Substances 0.000 claims description 27
- 238000004321 preservation Methods 0.000 claims description 18
- 238000007670 refining Methods 0.000 claims description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 13
- 239000013078 crystal Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 3
- 238000005275 alloying Methods 0.000 abstract description 3
- 238000001803 electron scattering Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000013386 optimize process Methods 0.000 abstract description 3
- 238000001953 recrystallisation Methods 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The application discloses a preparation method of high-conductivity aluminum alloy, which comprises the following steps: preparing materials to melt aluminum ingots, and then sequentially feeding the aluminum ingots to melt according to the prepared materialsIn a smelting furnace, smelting, slag skimming treatment, ultrasonic treatment, casting treatment, solution treatment, deformation treatment, aging treatment and electric pulse treatment are carried out. After the components are optimized, re and Al form Al 3 Re phase, after alloying, has excellent conductivity and mechanical property after synergistic effect with Si, cu, mn, mg, fe components, and after combining the optimized process of the application, smaller crystal grains and dislocation are strengthened, the tensile strength of the aluminum alloy can be improved, and the electron scattering is reduced, so that the conductivity of the aluminum alloy can be improved; in addition, the application designs electric pulse treatment in the process, and under the combined action of the thermal effect and the non-thermal effect, the recrystallization process occurs to generate a large amount of sub-crystals, a large amount of precipitated phases are precipitated and dispersed in the matrix, and the mechanical property and the electric conductivity are obviously improved.
Description
Technical Field
The application relates to the field of preparation of aluminum alloy, in particular to a preparation method of high-conductivity aluminum alloy.
Background
With the development of technology, a large number of electronic products are favored, such as communications and automobiles, and the use performance of the products is generally improved by adding a large number of electronic components, but the products generate more heat while adding more components. In addition, the electronic components are usually made of aluminum alloy, so that in order to make the product have more excellent performance, the aluminum alloy is required to have certain strength and higher electric conductivity and heat conductivity. Factors affecting the conductive properties of the metal material generally include temperature, chemical composition, crystal structure, concentration of impurities and defects, mobility thereof, and the like. However, the conductivity of different kinds of materials is different, and the metal material using free electrons as the mechanism has a decrease with increasing temperature. Although temperature has little effect on the effective electron number and the mean electron velocity, temperature increases cause the ion vibration clamp, the thermal vibration amplitude increases, the disorder of atoms increases, the fluctuation of periodic potential fields increases, these factors decrease the degree of freedom of electron movement, the tri-color record increases to cause the increase of resistivity, the resistivity of the metal changes with temperature, the electrons are generally considered to be completely free above debye temperature, and the vibration of atoms is independent of each other, so that the mean self-driving travel of the electrons is inversely proportional to the square of the lattice vibration amplitude. In practical production applications, besides considering the conductivity of the metal, the mechanical property of the metal is considered, and the mechanical property of the aluminum alloy is generally reduced when the conductivity of the metal is improved, so that research on the aluminum alloy with excellent conductivity and mechanical property is of great significance.
Disclosure of Invention
Based on the above, in order to solve the problem of the prior art that the mechanical property of the aluminum alloy is reduced when the conductivity of the aluminum alloy is improved, the application provides a preparation method of the high-conductivity aluminum alloy, which comprises the following steps:
a method for preparing a high conductivity aluminum alloy, the method comprising the steps of:
preparing materials according to the set chemical components;
melting aluminum ingots, sequentially feeding the aluminum ingots into a smelting furnace according to the preparation of materials for smelting, uniformly scattering a covering agent on the surface of a melt, performing primary heat preservation treatment, performing primary slag skimming treatment, scattering a refining agent on the surface of the melt, sufficiently stirring, performing secondary heat preservation treatment, performing secondary slag skimming treatment, performing ultrasonic treatment, casting treatment, solid solution treatment, deformation treatment, aging treatment and electric pulse treatment to obtain aluminum alloy;
wherein the voltage of the electric pulse treatment is 5V-10V, the current is 120A-150A, the frequency is 45 HZ-50 HZ, and the time is 1 min-2 min.
Further, the chemical components comprise the following components in percentage by mass: 0.28 to 0.32 percent of Si, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Cu, less than or equal to 0.05 percent of Mn, 0.28 to 0.32 percent of Mg, less than or equal to 0.05 percent of Ti, 0.01 to 0.03 percent of Re and the balance of Al.
Further, the temperature of the molten aluminum ingot is 750-775 ℃.
Further, the smelting temperature is 680-750 ℃.
Further, the covering agent comprises the following components in percentage by mass of 3-5:1-2:1-2: KCl, caCl of 1 2 、BaCl 2 And NaCl, wherein the addition amount of the covering agent accounts for 0.01-0.03% of the mass of the melt.
Further, the temperature of the primary heat preservation treatment is 600-650 ℃ and the time is 20-30 min.
Further, the refining agent comprises KCl and CaCl in a mass ratio of 2-5:1-3:1 2 、BaCl 2 CaF (Caf) 2 The mixture is obtained by mixing, and the addition amount of the refining agent accounts for 0.01 to 0.03 percent of the mass of the melt.
Further, the temperature of the secondary heat preservation treatment is 600-620 ℃ and the time is 30-40 min.
Further, the power of the ultrasonic treatment is 2 KW-5 KW, and the frequency is 2 KHz-5 KHz.
Further, the temperature of the solution treatment is 500-550 ℃ and the time is 20-30 min.
After the components are optimized in the scheme, re and Al form Al 3 Re phase, after alloying, has excellent conductivity and mechanical property after synergistic effect with Si, cu, mn, mg, fe components, and after combining the optimized process of the application, smaller crystal grains and dislocation are strengthened, the tensile strength of the aluminum alloy can be improved, and the electron scattering is reduced, so that the conductivity of the aluminum alloy can be improved; in addition, the application designs electric pulse treatment in the process, and under the combined action of the thermal effect and the non-thermal effect, the recrystallization process occurs to generate a large amount of sub-crystals, a large amount of precipitated phases are precipitated and dispersed in the matrix, and the mechanical property and the electric conductivity are obviously improved.
Detailed Description
The present application will be described in further detail with reference to the following examples thereof in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The preparation method of the high-conductivity aluminum alloy in the embodiment of the application comprises the following steps:
preparing materials according to the set chemical components;
melting aluminum ingots, sequentially feeding the aluminum ingots into a smelting furnace according to the preparation of materials for smelting, uniformly scattering a covering agent on the surface of a melt, performing primary heat preservation treatment, performing primary slag skimming treatment, scattering a refining agent on the surface of the melt, sufficiently stirring, performing secondary heat preservation treatment, performing secondary slag skimming treatment, performing ultrasonic treatment, casting treatment, solid solution treatment, deformation treatment, aging treatment and electric pulse treatment to obtain aluminum alloy;
wherein the voltage of the electric pulse treatment is 5V-10V, the current is 120A-150A, the frequency is 45 HZ-50 HZ, and the time is 1 min-2 min.
In one embodiment, the chemical components comprise the following components in percentage by mass: 0.28 to 0.32 percent of Si, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Cu, less than or equal to 0.05 percent of Mn, 0.28 to 0.32 percent of Mg, less than or equal to 0.05 percent of Ti, 0.01 to 0.03 percent of Re and the balance of Al.
In one embodiment, the temperature of the molten aluminum ingot is 750 ℃ to 775 ℃.
In one embodiment, the smelting temperature is 680 ℃ to 750 ℃.
In one embodiment, the covering agent comprises the following components in mass ratio of 3-5:1-2:1-2: KCl, caCl of 1 2 、BaCl 2 And NaCl, wherein the addition amount of the covering agent accounts for 0.01-0.03% of the mass of the melt.
In one embodiment, the temperature of the primary heat preservation treatment is 600-650 ℃ and the time is 20-30 min.
In one embodiment, the refining agent comprises KCl and CaCl with the mass ratio of 2-5:1-3:1 2 、BaCl 2 CaF (Caf) 2 The mixture is obtained by mixing, and the addition amount of the refining agent accounts for 0.01 to 0.03 percent of the mass of the melt.
In one embodiment, the temperature of the secondary heat preservation treatment is 600-620 ℃ and the time is 30-40 min.
In one embodiment, the power of the ultrasonic treatment is 2 KW-5 KW, and the frequency is 2 KHz-5 KHz.
In one embodiment, the temperature of the solution treatment is 500-550 ℃ and the time is 20-30 min.
In one embodiment, the deforming process is: the cast ingot is rolled for 1 to 3 times, and the total rolling reduction is 65 to 80 percent.
In one embodiment, the aging treatment is performed at a temperature of 300-500 ℃ for 10-15 hours.
After the components are optimized in the scheme, re and Al form Al 3 Re phase, after alloying, has excellent conductivity and mechanical property after synergistic effect with Si, cu, mn, mg, fe components, and after combining the optimized process of the application, smaller crystal grains and dislocation are strengthened, the tensile strength of the aluminum alloy can be improved, and the electron scattering is reduced, so that the conductivity of the aluminum alloy can be improved; in addition, the application designs electric pulse treatment in the process, and under the combined action of the thermal effect and the non-thermal effect, the recrystallization process occurs to generate a large amount of sub-crystals, a large amount of precipitated phases are precipitated and dispersed in the matrix, and the mechanical property and the electric conductivity are obviously improved.
Embodiments of the present application will be described in detail below with reference to specific examples.
Example 1:
the preparation method of the high-conductivity aluminum alloy comprises the following steps:
the mass ratio is 3:1:1: KCl, caCl of 1 2 、BaCl 2 Uniformly mixing with NaCl to obtain a covering agent;
the mass ratio is 2: KCl and CaCl of 3:3:1 2 、BaCl 2 CaF (Caf) 2 Uniformly mixing to obtain a refining agent;
preparing materials according to the chemical compositions set in the table 1;
melting an aluminum ingot at 750 ℃, sequentially feeding the aluminum ingot into a smelting furnace according to the preparation, and smelting at 700 ℃ to obtain a melt;
uniformly scattering a covering agent on the surface of a melt, wherein the addition amount of the covering agent accounts for 0.01% of the mass of the melt, performing primary heat preservation treatment for 20min at the temperature of 600 ℃, scattering a refining agent on the surface of the melt after primary slag skimming treatment, wherein the addition amount of the refining agent accounts for 0.03% of the mass of the melt, performing secondary heat preservation treatment for 30min at the temperature of 620 ℃ after full stirring, performing ultrasonic treatment at the power of 2KW and the frequency of 2KHz after secondary slag skimming treatment, and performing casting treatment to obtain an ingot;
and carrying out solution treatment on the cast ingot at the temperature of 500 ℃ for 20min, then carrying out rolling for 3 times, carrying out aging treatment for 10h under the condition that the total rolling reduction is 80 percent and the temperature is 500 ℃, and carrying out electric pulse treatment for 1min under the condition that the voltage is 5V, the current is 120A and the frequency is 45HZ to obtain the aluminum alloy.
Example 2:
the preparation method of the high-conductivity aluminum alloy comprises the following steps:
KCl and CaCl with the mass ratio of 5:2:2:1 are mixed together 2 、BaCl 2 Uniformly mixing with NaCl to obtain a covering agent;
KCl and CaCl with the mass ratio of 5:3:1:1 are mixed together 2 、BaCl 2 CaF (Caf) 2 Uniformly mixing to obtain a refining agent;
preparing materials according to the chemical compositions set in the table 1;
melting an aluminum ingot at 750 ℃, sequentially feeding the aluminum ingot into a smelting furnace according to the preparation, and smelting at 750 ℃ to obtain a melt;
uniformly spreading a covering agent on the surface of a melt, wherein the addition amount of the covering agent accounts for 0.03% of the mass of the melt, performing primary heat preservation treatment for 20-30 min at the temperature of 650 ℃, performing primary slag skimming treatment, spreading a refining agent on the surface of the melt, wherein the addition amount of the refining agent accounts for 0.03% of the mass of the melt, fully stirring, performing secondary heat preservation treatment for 40min at the temperature of 620 ℃, performing secondary slag skimming treatment, performing ultrasonic treatment at the power of 5KW and the frequency of 2KHz, and performing casting treatment to obtain an ingot;
and carrying out solution treatment on the cast ingot at the temperature of 500 ℃ for 20min, then carrying out rolling for 3 times, carrying out aging treatment for 10h under the condition that the total rolling reduction is 75 percent and the temperature is 500 ℃, and carrying out electric pulse treatment for 1min under the condition that the voltage is 5V, the current is 120A and the frequency is 45HZ to obtain the aluminum alloy.
Example 3:
the preparation method of the high-conductivity aluminum alloy comprises the following steps:
the mass ratio is 5:2:2: KCl, caCl of 1 2 、BaCl 2 Uniformly mixing with NaCl to obtain a covering agent;
KCl and CaCl with the mass ratio of 3:1:1:1 are mixed together 2 、BaCl 2 CaF (Caf) 2 Uniformly mixing to obtain a refining agent;
preparing materials according to the chemical compositions set in the table 1;
melting an aluminum ingot at 775 ℃, sequentially feeding the aluminum ingot into a smelting furnace according to the preparation, and smelting at 680 ℃ to obtain a melt;
uniformly scattering a covering agent on the surface of a melt, wherein the addition amount of the covering agent accounts for 0.01% of the mass of the melt, performing primary heat preservation treatment for 30min at the temperature of 600 ℃, scattering a refining agent on the surface of the melt after primary slag skimming treatment, wherein the addition amount of the refining agent accounts for 0.01% of the mass of the melt, performing secondary heat preservation treatment for 30min at the temperature of 600 after full stirring, performing ultrasonic treatment at the power of 2KW and the frequency of 2KHz after secondary slag skimming treatment, and performing casting treatment to obtain an ingot;
and carrying out solution treatment on the cast ingot at 520 ℃ for 30min, then carrying out rolling for 3 times, carrying out aging treatment for 12h at 500 ℃ under the conditions of voltage of 6V, current of 120A and frequency of 45HZ, and carrying out electric pulse treatment for 1min to obtain the aluminum alloy.
Comparative example 1:
comparative example 1 was different from example 3 in the components and the component ratios, and the components and the component ratios were found to be as shown in table 1, and the other was the same as in example 3.
Comparative example 2:
comparative example 2 was different from example 3 in the components and the component ratios, and the components and the component ratios were found to be as shown in table 1, and the other was the same as in example 3.
Comparative example 3:
comparative example 3 is different from example 3 in that the process in comparative example 3 was not subjected to deformation treatment, and the other is the same as example 3.
Comparative example 4:
comparative example 4 differs from example 3 in that the process of comparative example 4 was not aged, and otherwise is the same as example 3.
Comparative example 5:
comparative example 5 differs from example 3 in that the process in comparative example 5 was not subjected to electric pulse treatment, and the other is the same as example 3.
Table 1:
the mechanical properties and the electric conductivity of the aluminum alloys prepared in examples 1 to 3 and the aluminum alloys prepared in comparative examples 1 to 5 were measured, and the results are shown in Table 2.
Table 2:
from the data analysis of table 2, the application can have excellent mechanical properties and electric conductivity through the optimization of components and processes, and compared with the embodiment 3, the mechanical properties and electric conductivity of the comparative examples 1-2 are poorer than those of the embodiment 3, which shows that the components and the component proportion of the application have obvious influence on the performance of the obtained aluminum alloy; the processes in comparative examples 3 to 5 are different, and finally the performance of preparing aluminum alloy is influenced, so that the application is proved to be a complete technical scheme in the process and the technology, so that the tensile strength of the prepared aluminum alloy is more than 265MPa, the yield strength is more than 190MPa, the elongation is more than 15.5%, and the conductivity is at least more than 59.4% IACS.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A method for preparing a high conductivity aluminum alloy, comprising the steps of:
preparing materials according to the set chemical components;
melting aluminum ingots, sequentially feeding the aluminum ingots into a smelting furnace according to the preparation of materials for smelting, uniformly scattering a covering agent on the surface of a melt, performing primary heat preservation treatment, performing primary slag skimming treatment, scattering a refining agent on the surface of the melt, sufficiently stirring, performing secondary heat preservation treatment, performing secondary slag skimming treatment, performing ultrasonic treatment, casting treatment, solid solution treatment, deformation treatment, aging treatment and electric pulse treatment to obtain aluminum alloy;
wherein the voltage of the electric pulse treatment is 5V-10V, the current is 120A-150A, the frequency is 45 HZ-50 HZ, and the time is 1 min-2 min.
2. The preparation method according to claim 1, wherein the chemical components comprise the following components in percentage by mass: 0.28 to 0.32 percent of Si, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Cu, less than or equal to 0.05 percent of Mn, 0.28 to 0.32 percent of Mg, less than or equal to 0.05 percent of Ti, 0.01 to 0.03 percent of Re and the balance of Al.
3. The method of claim 1, wherein the temperature of the molten aluminum ingot is 750 ℃ to 775 ℃.
4. The method of claim 1, wherein the smelting temperature is 680 ℃ to 750 ℃.
5. The preparation method according to claim 1, wherein the covering agent comprises the following components in mass ratio of 3-5:1-2:1-2: KCl, caCl of 1 2 、BaCl 2 And NaCl, wherein the addition amount of the covering agent accounts for 0.01-0.03% of the mass of the melt.
6. The preparation method according to claim 1, wherein the temperature of the primary heat preservation treatment is 600-650 ℃ for 20-30 min.
7. The preparation method according to claim 1, wherein the refining agent comprises KCl and CaCl in a mass ratio of 2-5:1-3:1 2 、BaCl 2 CaF (Caf) 2 The mixture is obtained by mixing, and the addition amount of the refining agent accounts for 0.01 to 0.03 percent of the mass of the melt.
8. The preparation method according to claim 1, wherein the temperature of the secondary heat preservation treatment is 600-620 ℃ and the time is 30-40 min.
9. The method according to claim 1, wherein the power of the ultrasonic treatment is 2KW to 5KW and the frequency is 2KHz to 5KHz.
10. The method according to claim 1, wherein the solution treatment is carried out at a temperature of 500 ℃ to 550 ℃ for 20min to 30min.
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| CN202310461865.7A CN116676499A (en) | 2023-04-26 | 2023-04-26 | Preparation method of high-conductivity aluminum alloy |
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| CN202310461865.7A CN116676499A (en) | 2023-04-26 | 2023-04-26 | Preparation method of high-conductivity aluminum alloy |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820685A (en) * | 2014-02-20 | 2014-05-28 | 无锡华能电缆有限公司 | Medium strength aluminium alloy wire with conductivity of 60% IACS, and preparation method thereof |
| CN104694865A (en) * | 2015-03-03 | 2015-06-10 | 西北工业大学 | Electric pulse regression treatment method for aluminum alloy |
| CN110241367A (en) * | 2019-07-03 | 2019-09-17 | 吉林大学 | A kind of aluminium alloy method for toughening based on pulse current |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820685A (en) * | 2014-02-20 | 2014-05-28 | 无锡华能电缆有限公司 | Medium strength aluminium alloy wire with conductivity of 60% IACS, and preparation method thereof |
| CN104694865A (en) * | 2015-03-03 | 2015-06-10 | 西北工业大学 | Electric pulse regression treatment method for aluminum alloy |
| CN110241367A (en) * | 2019-07-03 | 2019-09-17 | 吉林大学 | A kind of aluminium alloy method for toughening based on pulse current |
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