CN110042285B - High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof - Google Patents
High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof Download PDFInfo
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- CN110042285B CN110042285B CN201910433473.3A CN201910433473A CN110042285B CN 110042285 B CN110042285 B CN 110042285B CN 201910433473 A CN201910433473 A CN 201910433473A CN 110042285 B CN110042285 B CN 110042285B
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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- 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
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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
- 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
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Abstract
The invention relates to an aluminum magnesium alloy for rivets, which comprises the following components in percentage by mass: 0.01-0.05 wt% of Si; 0.05-0.15 wt% of Fe; 0.03-0.20 wt% of Mn; 2.9-3.9 wt% of Mg; 0.05-0.20 wt% of Cr; v is 0.003 to 0.020 wt%; 0.008-0.04 wt% of Ti; be 0.00005-0.0005 wt%, and the balance Al. The invention also provides a preparation method of the aluminum-magnesium alloy wire for the rivet, which comprises the following steps: (1) smelting; (2) casting; (3) rolling; (4) drawing and intermediate annealing: comprises a non-finished product drawing and a finished product drawing; wherein, when the non-finished product is drawn, the section compressibility of the material needs to be subjected to intermediate annealing and then drawn every time the section compressibility of the material is deformed by 40-60%; when a finished product is drawn, the section compressibility of the material is 10% -30%, and the aluminum-magnesium alloy wire for the rivet is obtained; the intermediate annealing comprises the following steps: heating the drawn wire to 150-200 ℃, and preserving the heat for 5-6 hours; then heating to 340-420 ℃ at the speed of 50-100 ℃/h, preserving the heat for 0.5-1 hour, and then cooling to room temperature.
Description
Technical Field
The invention relates to the field of metal materials for rivets, in particular to a high-strength aluminum-magnesium alloy wire for rivets and a preparation method thereof.
Background
The aluminum alloy rivet is widely used for riveting products such as buildings, automobiles, airplanes, furniture and the like. The wire rod for processing the aluminum alloy rivet at present has high cracking rate, and the cracking rate of the aluminum alloy rod for the rail wagon body rivet related to CN 104717870B reaches 4.7 percent. While the process with slightly better performance is complex and expensive, for example, CN 106544558A provides a high-strength aluminum alloy rivet wire, the wire has higher performance strength, but the process is complicated and expensive, and especially, the aluminum intermediate alloy particles need to be prepared in advance, which is difficult to popularize in practice. Therefore, how to solve the problem of high cold heading cracking rate of the rivet wire by using a simple and economic process method is the focus of the industry at present.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a high-strength aluminum-magnesium alloy wire for rivets and a preparation method thereof, and the high-strength aluminum-magnesium alloy wire for rivets is capable of solving the problem of high wire cold heading cracking rate and obtaining better mechanical properties through the innovation of components and a process method; in addition, the process method is reasonable and economical on the premise of ensuring the product performance.
The invention aims to provide an aluminum magnesium alloy for rivets, which comprises the following components in percentage by mass based on the total weight of the alloy: 0.01-0.05 wt% of Si; 0.05-0.15 wt% of Fe; 0.03-0.20 wt% of Mn; 2.9-3.9 wt% of Mg; 0.05-0.20 wt% of Cr; v is 0.003 to 0.020 wt%; 0.008-0.04 wt% of Ti; be 0.00005-0.0005 wt%, and the balance Al and unavoidable impurities.
Further, the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: 0.03wt% of Si; 0.12 wt% of Fe; 0.1-0.20 wt% of Mn; 2.9-3.8 wt% of Mg; 0.05 to 0.18 wt% of Cr; v is 0.003 to 0.018wt percent; 0.015-0.035 wt% of Ti; be 0.0002 to 0.0005 wt%, the balance being Al and unavoidable impurities.
In a specific embodiment of the invention, the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: si0.03 wt%; 0.12 wt% of Fe; mn0.10wt%; mg 3.4 wt%; 0.05 wt% of Cr; v0.009wt%; 0.015 wt% of Ti; be 0.0002 wt%, the balance being Al and unavoidable impurities.
In another embodiment of the invention, the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: si 0.01 wt%; 0.15 wt% of Fe; mn0.07wt%; mg 2.9 wt%; 0.15 wt% of Cr; v0.003wt%; 0.025 wt% of Ti; be 0.00008 wt%, and Al and inevitable impurities as the rest.
In another embodiment of the invention, the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: si 0.05 wt%; 0.15 wt% of Fe; mn0.20wt%; mg 3.8 wt%; 0.18 wt% of Cr; v0.018wt%; 0.035 wt% of Ti; be 0.0005 wt%, the balance being Al and unavoidable impurities.
The magnesium-aluminum alloy for the rivet improves the recrystallization temperature and ductility of a rivet wire material by adding proper amount of Fe, however, Fe is easy to form a coarse iron phase on the surface in the casting process, so that the enrichment of the iron phase on the surface and the refinement of the coarse iron phase are avoided by adding the proper amount of V, Be.
The second purpose of the invention is to provide a preparation method of the aluminum magnesium alloy wire for the rivet, which is prepared by adopting the aluminum magnesium alloy wire for the rivet and comprises the following steps:
(1) smelting: mixing and smelting an aluminum ingot and an aluminum intermediate alloy ingot according to the composition of the aluminum-magnesium alloy for the rivet, wherein the smelting temperature is 740-775 ℃, and the temperature is kept for 30-60 min; then, fully and uniformly mixing the smelted melt, and removing hydrogen and impurities in the melt;
(2) casting: controlling the temperature of the clean aluminum-magnesium alloy melt obtained in the step (1) to be 700-750 ℃, then uniformly cooling to 300-450 ℃, wherein the cooling speed is 10-30 ℃/s, and obtaining a casting blank with the grain size of internal grains being less than or equal to 100 mu m;
(3) rolling: carrying out hot rolling on the casting blank, wherein the feeding temperature is 380-450 ℃, and cooling to below 280 ℃ after rolling is finished;
(4) drawing and intermediate annealing: performing cold drawing on the rolled material obtained in the step (3), wherein the cold drawing comprises non-finished product drawing and finished product drawing; wherein, when the non-finished product is drawn, the section compressibility of the material needs to be subjected to intermediate annealing and then drawn every time the section compressibility of the material is deformed by 40-60%; when a finished product is drawn, the section compressibility of the material is 10% -30%, and the aluminum-magnesium alloy wire for the rivet is obtained;
in order to control the grain size after the non-finished product is subjected to the drawing annealing, the inventor determines a novel annealing process, namely an L & H intermediate annealing process, for removing stress through a large number of experiments, wherein the intermediate annealing process comprises the following steps: heating the drawn wire to 150-200 ℃, and preserving the heat for 5-6 hours; then heating to 340-420 ℃ at the speed of 50-100 ℃/h, preserving the heat for 0.5-1 hour, and then cooling to room temperature.
Further, in the step (1), the melted melt is stirred for 30-60 min to achieve full uniform mixing.
Further, in step (2), cooling is performed by a water-cooled wheel type copper mold.
Further, in the step (3), the temperature is reduced by using water or emulsion.
Further, the emulsion is Quaker (Quaker) Al WP105 with the concentration of 12-15%. The emulsion is commercially available.
Further, in the step (4), the cold drawing is carried out at a temperature of 20 to 60 ℃.
Further, in the step (4), in the intermediate annealing process, cooling is performed in air.
The third purpose of the invention is to provide the aluminum-magnesium alloy wire for the rivet, which is prepared by the preparation method, and comprises the following components in percentage by mass based on the total weight of the aluminum-magnesium alloy wire: 0.01-0.05 wt% of Si; 0.05-0.15 wt% of Fe; 0.03-0.20 wt% of Mn; 2.9-3.9 wt% of Mg; 0.05-0.20 wt% of Cr; v is 0.003 to 0.020 wt%; 0.008-0.04 wt% of Ti; be 0.00005-0.0005 wt%, and the balance of Al;
the grain diameter of the cross section crystal grain of the aluminum-magnesium alloy wire for the rivet is less than or equal to 25 mu m, and the grain diameter of the longitudinal section crystal grain is less than or equal to 50 mu m; the tensile strength is 250-310 MPa, the elongation is more than or equal to 4%, and the cold heading cracking rate of the processed rivet is less than or equal to 0.0015%.
By the scheme, the invention at least has the following advantages:
the L & H annealing process can ensure that the cross section crystal grain of the aluminum-magnesium alloy wire for the rivet is less than or equal to 25 mu m and the longitudinal section crystal grain is less than or equal to 50 mu m. Through the design of the alloy components and the improvement of the process, the tensile strength of the obtained alloy wire is 250-310 MPa, the elongation is more than or equal to 4%, the cold heading cracking rate of the processed rivet is less than or equal to 0.0015%, the problem of high cold heading cracking rate of the wire can be solved, and better mechanical properties can be obtained.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is an SEM (scanning electron microscope) test result of the aluminum magnesium alloy wire prepared in comparative example 1;
fig. 2 is a SEM (scanning electron microscope) test result of the aluminum magnesium alloy wire prepared in example 1.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The aluminum magnesium alloy wire for processing the rivet has better comprehensive performance and comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy wire: si0.03 wt%; 0.12 wt% of Fe; mn0.10wt%; mg 3.4 wt%; 0.05 wt% of Cr; v0.009wt%; 0.015 wt% of Ti; be 0.0002 wt%, the balance being Al and unavoidable impurities.
The preparation method comprises the following steps:
(1) smelting: and adding aluminum ingots and aluminum intermediate alloy ingots with corresponding weights according to the components, putting the aluminum ingots and the aluminum intermediate alloy ingots into a smelting furnace together for smelting, wherein the smelting temperature is 760 ℃, and keeping the temperature for 35 min. Then, the aluminum alloy melt with qualified components is fully stirred (stirring time is 40min) and subjected to elimination treatment of hydrogen and impurities.
(2) Casting: and controlling the temperature of the clean aluminum alloy melt obtained in the step at 745 ℃, then rapidly and uniformly cooling to 400 ℃ through a water-cooling wheel type copper mold, and controlling the cooling speed in the casting process at 10-30 ℃/s so as to obtain a casting blank with fine internal crystal grains (the average size of the crystal grains is 100 microns).
(3) Rolling: the cast slab obtained in the above step is hot-rolled to obtain a rod material having a desired wire diameter (e.g., a rivet line of 5.9mm, i.e., 9.0 mm). The continuous rolling mill is used together with continuous casting machine, the temperature of blank entering the rolling mill is controlled at 420 ℃, and the temperature of material is reduced to 280 ℃ by water or emulsion immediately after rolling.
(4) Drawing (unfinished drawing) and intermediate annealing: the obtained rod with the wire diameter of phi 9.0mm is cold-drawn to phi 6.3mm, and when a non-finished product is drawn, the section compression ratio of the material is 40-60% when the non-finished product is drawn, the L & H annealing process is adopted for annealing (firstly, the temperature is increased to 180 ℃, the temperature is kept for 5 hours, then, the temperature is rapidly increased to 350 ℃ at the speed of 80 ℃/H, the temperature is kept for 0.5 hour, and the air cooling is carried out to the room temperature).
(5) Drawing (finished drawing): and drawing the wire rod which is drawn to phi 6.3mm and annealed to the required wire diameter phi 5.9 mm.
The performance test of the obtained aluminum-magnesium alloy wire (phi 5.9mm) is carried out, the average grain size of the cross section is 24 mu m, the average grain size of the longitudinal section is 45 mu m, the tensile strength is 260MPa, the elongation is 4.5 percent, and the cold heading cracking rate of the processed rivet is 0.0008 percent.
Example 2
The aluminum magnesium alloy wire for processing the rivet has better comprehensive performance and comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy wire: si 0.01 wt%; 0.15 wt% of Fe; mn0.07wt%; mg 2.9 wt%; 0.15 wt% of Cr; v0.003wt%; 0.025 wt% of Ti; be 0.00008 wt%, and Al and inevitable impurities as the rest.
The preparation method comprises the following steps:
(1) smelting: and adding aluminum ingots and aluminum intermediate alloy ingots with corresponding weights according to the components, putting the aluminum ingots and the aluminum intermediate alloy ingots into a smelting furnace together for smelting, wherein the smelting temperature is 750 ℃, and keeping the temperature for 60 min. Then, the aluminum alloy melt with qualified components is fully stirred (the stirring time is 30min) and subjected to elimination treatment of hydrogen and impurities.
(2) Casting: and controlling the temperature of the clean aluminum alloy melt obtained in the step at 750 ℃, then rapidly and uniformly cooling to 420 ℃ through a water-cooling wheel type copper mold, and controlling the cooling speed in the casting process at 10-30 ℃/s so as to obtain a casting blank with fine internal crystal grains (the average size of the crystal grains is 95 microns).
(3) Rolling: the cast slab obtained in the above step is hot-rolled to obtain a rod material having a desired wire diameter (e.g., a 4.6mm rivet line, i.e., a diameter of 7.5 mm). The continuous rolling mill is used together with continuous casting machine, the temperature of the blank entering the rolling mill is controlled at 420 ℃, and the temperature of the material is reduced to 250 ℃ by water or emulsion immediately after the rolling is finished.
(4) Drawing (unfinished drawing) and intermediate annealing: the obtained pole material with the wire diameter phi of 7.5mm is cold-drawn to phi of 5.35mm, when a non-finished product is drawn, the section compression ratio of the material is 40-60% when the non-finished product is drawn, and the L & H annealing process is adopted for annealing (firstly, the temperature is raised to 150 ℃, the temperature is kept for 5 hours, then, the temperature is rapidly raised to 400 ℃ at the speed of 70 ℃/H, the temperature is kept for 1 hour, and the air cooling is carried out to the room temperature).
(5) Drawing (finished drawing): and drawing the wire rod which is drawn to phi 5.35mm and annealed to the required wire diameter phi 4.6 mm.
The performance test is carried out on the obtained aluminum-magnesium alloy wire (phi 4.6mm), the average grain size of the cross section is 25 mu m, and the average grain size of the longitudinal section is 50 mu m; the tensile strength is 275MPa, the elongation is 5 percent, and the cold heading cracking rate of the processed rivet is 0.0005 percent.
Example 3
The aluminum magnesium alloy wire for processing the rivet has better comprehensive performance and comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy wire: si 0.05 wt%; 0.15 wt% of Fe; mn0.20wt%; mg 3.8 wt%; 0.18 wt% of Cr; v0.018wt%; 0.035 wt% of Ti; be 0.0005 wt%, the balance being Al and unavoidable impurities.
The preparation method comprises the following steps:
(1) smelting: and adding aluminum ingots and aluminum intermediate alloy ingots with corresponding weights according to the components, putting the aluminum ingots and the aluminum intermediate alloy ingots into a smelting furnace together for smelting, wherein the smelting temperature is 775 ℃, and the heat preservation time is 40 min. Then, the aluminum alloy melt with qualified components is fully stirred (stirring time is 50min) and subjected to elimination treatment of hydrogen and impurities.
(2) Casting: and controlling the temperature of the clean aluminum alloy melt obtained in the step at 715 ℃, then rapidly and uniformly cooling to 380 ℃ through a water-cooling wheel type copper mold, and controlling the cooling speed in the casting process at 10-30 ℃/second, so as to obtain a casting blank with fine internal crystal grains (the average size of the crystal grains is 80 microns).
(3) Rolling: the cast slab obtained in the above step is hot-rolled to obtain a rod material having a desired wire diameter (e.g., a rivet line of 3.8mm, i.e., 7.5 mm). The continuous rolling mill is used together with the continuous casting machine, the temperature of the blank entering the rolling mill is controlled at 450 ℃, and the temperature of the material is reduced to 270 ℃ by water or emulsion immediately after the rolling is finished.
(4) Drawing (unfinished drawing) and intermediate annealing: the obtained pole material with the wire diameter phi of 7.5mm is cold-drawn to phi of 5.5mm, when a non-finished product is drawn, the section compression ratio of the material is 40-60% when the non-finished product is drawn, and the L & H annealing process is adopted for annealing (firstly, the temperature is increased to 160 ℃, the temperature is kept for 6 hours, then, the temperature is rapidly increased to 380 ℃ at the speed of 50 ℃/H, the temperature is kept for 1 hour, and the air cooling is carried out to the room temperature).
(5) Drawing (finished drawing): and drawing the wire rod which is drawn to phi 5.5mm and annealed to the required wire diameter phi 3.8 mm.
Performing performance test on the obtained aluminum-magnesium alloy wire (phi 3.8mm), wherein the average grain size of the cross section is 20 mu m, and the average grain size of the longitudinal section is 46 mu m; the tensile strength is 300MPa, the elongation is 8 percent, and the cold heading cracking rate of the processed rivet is 0.0003 percent.
Comparative example 1
The aluminum magnesium alloy wire for processing the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy wire: si0.03 wt%; 0.13 wt% of Fe; mn0.11wt%; mg 3.4 wt%; 0.06wt% of Cr0; ti0.017wt%; the balance of Al and inevitable impurities.
Using the above-described element composition, an aluminum magnesium alloy wire was produced in the same manner as in example 1. The average grain size of the cross section of the aluminum-magnesium alloy wire prepared by the method is 25 mu m, and the average grain size of the longitudinal section of the aluminum-magnesium alloy wire is 47 mu m; the tensile strength is 263MPa, the elongation is 4.7%, and the cold heading cracking rate of the processed rivet is 20%.
Fig. 1 shows SEM (scanning electron microscope) test results of the al-mg alloy wire prepared without adding V and Be elements, and it can Be seen from the figure that the prepared alloy has a coarse iron phase on the surface (the upper gray bulk particles are the iron phase) without adding V and Be elements.
Fig. 2 is a SEM (scanning electron microscope) test result of the al-mg alloy wire prepared in example 1, and it can be seen that the alloy surface has no coarse iron phase.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A preparation method of an aluminum magnesium alloy wire for rivets is characterized by comprising the following steps:
(1) smelting: mixing and smelting an aluminum ingot and an aluminum intermediate alloy ingot according to the composition of the aluminum-magnesium alloy for the rivet, wherein the smelting temperature is 740-775 ℃, and the temperature is kept for 30-60 min; then, fully and uniformly mixing the smelted melt, and removing hydrogen and impurities in the melt; the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: 0.01-0.05 wt% of Si; 0.05-0.15 wt% of Fe; 0.03-0.20 wt% of Mn; 2.9-3.9 wt% of Mg; 0.05-0.20 wt% of Cr; v is 0.003 to 0.020 wt%; 0.008-0.04 wt% of Ti; be 0.00005-0.0005 wt%, and the balance of Al;
(2) casting: controlling the temperature of the clean aluminum-magnesium alloy melt obtained in the step (1) to be 700-750 ℃, then uniformly cooling to 300-450 ℃, wherein the cooling speed is 10-30 ℃/s, and obtaining a casting blank with the grain size of internal grains being less than or equal to 100 mu m;
(3) rolling: carrying out hot rolling on the casting blank, wherein the feeding temperature is 380-450 ℃, and cooling to below 280 ℃ after rolling is finished;
(4) drawing and intermediate annealing: performing cold drawing on the rolled material obtained in the step (3), wherein the cold drawing comprises non-finished product drawing and finished product drawing; wherein, when the non-finished product is drawn, the section compressibility of the material needs to be subjected to intermediate annealing and then drawn every time the section compressibility of the material is deformed by 40-60%; when a finished product is drawn, the section compressibility of the material is 10% -30%, and the aluminum-magnesium alloy wire for the rivet is obtained;
the intermediate annealing comprises the following steps: heating the drawn wire to 150-200 ℃, and preserving the heat for 5-6 hours; then heating to 340-420 ℃ at the speed of 50-100 ℃/h, preserving the heat for 0.5-1 hour, and then cooling to room temperature.
2. The method of claim 1, wherein: in the step (1), the aluminum magnesium alloy for the rivet comprises the following components in percentage by mass based on the total weight of the aluminum magnesium alloy: 0.01-0.05 wt% of Si; 0.12-0.15 wt% of Fe; 0.1-0.20 wt% of Mn; 2.9-3.8 wt% of Mg; 0.05 to 0.18 wt% of Cr; v is 0.003 to 0.018wt percent; 0.015-0.035 wt% of Ti0.015; be 0.0002 to 0.0005 wt%, the balance being Al.
3. The method of claim 1, wherein: in the step (1), the smelted melt is stirred for 30-60 min to realize full uniform mixing.
4. The method of claim 1, wherein: in the step (2), cooling is performed by a water-cooled wheel type copper mold.
5. The method of claim 1, wherein: in the step (3), water or emulsion is adopted for cooling.
6. The method of claim 1, wherein: in the step (4), the cold drawing is carried out at a temperature of 20-60 ℃.
7. The method of claim 1, wherein: in the step (4), the intermediate annealing process is carried out in air for cooling.
8. An aluminum magnesium alloy wire for rivets produced by the production method according to claim 1, characterized in that: based on the total weight, the composition comprises the following components in percentage by mass: 0.01-0.05 wt% of Si; 0.05-0.15 wt% of Fe; 0.03-0.20 wt% of Mn; 2.9-3.9 wt% of Mg; 0.05-0.20 wt% of Cr; v is 0.003 to 0.020 wt%; 0.008-0.04 wt% of Ti; be 0.00005-0.0005 wt%, and the balance of Al;
the grain size of the cross section crystal grain of the aluminum-magnesium alloy wire for the rivet is less than or equal to 25 micrometers, and the grain size of the longitudinal section crystal grain is less than or equal to 50 micrometers; the tensile strength is 250-310 MPa, the elongation is more than or equal to 4%, and the cold heading cracking rate of the processed rivet is less than or equal to 0.0015%.
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| CN201910433473.3A CN110042285B (en) | 2019-05-23 | 2019-05-23 | High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof |
| PCT/CN2019/102729 WO2020232873A1 (en) | 2019-05-23 | 2019-08-27 | High-strength aluminum magnesium alloy wire for rivet and preparation method for high-strength aluminum magnesium alloy wire |
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| CN201910433473.3A CN110042285B (en) | 2019-05-23 | 2019-05-23 | High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof |
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| CN110042285B (en) * | 2019-05-23 | 2020-03-24 | 江苏亨通电力特种导线有限公司 | High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof |
| CN114798799B (en) * | 2022-04-22 | 2023-08-01 | 上海交通大学 | Preparation method of rare earth magnesium alloy wire suitable for arc additive manufacturing |
| CN115679164B (en) * | 2022-11-23 | 2023-12-01 | 中铝材料应用研究院有限公司 | 5xxx aluminum alloys, and methods of making the same |
| CN117644321B (en) * | 2024-01-30 | 2024-04-12 | 天津市金桥焊材集团股份有限公司 | Preparation method of aluminum alloy gas-shielded welding wire |
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| WO2020232873A1 (en) | 2020-11-26 |
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