CN110257654B - Aluminum-magnesium-silicon-scandium-zirconium alloy wire, and preparation method and application thereof - Google Patents
Aluminum-magnesium-silicon-scandium-zirconium alloy wire, and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides an aluminum-magnesium-silicon-scandium-zirconium alloy wire, and a preparation method and application thereof. The preparation method comprises the following steps: melting an aluminum ingot to obtain an aluminum melt, and performing first refining treatment, second refining treatment and grain refining treatment to enable second refined aluminum liquid to comprise 4.5-6% of Mg element, 0.2-0.5% of Si element, 0.15-0.4% of Fe element, 0.05-0.15% of Cu element, 0.1-0.2% of Ti element, 0.05-0.2% of Mn element, 0.05-0.2% of Sc element, 0.05-0.6% of Zr element and the balance of Al element; and then sequentially carrying out online degassing, deslagging, casting, rolling, annealing, drawing and annealing treatment to obtain the Al-Mg-Si-Sc-Zr alloy wire. The aluminum-magnesium-silicon-scandium-zirconium alloy wire has the advantages of low preparation cost, high tensile strength, high elongation and the like.
Description
Technical Field
The invention relates to the technical field of aluminum alloy, in particular to an aluminum-magnesium-silicon-scandium-zirconium alloy wire, and a preparation method and application thereof.
Background
The aluminum alloy vehicle body of the high-speed train takes large-scale flat wide thin-wall aluminum alloy sections as welding structural members of the framework, and the welding can reduce 40% of vehicle manufacturing workload, so that the vehicle manufacturing cost is reduced. The development of welding wires matched with high-performance aluminum profiles is the guarantee of aluminum profile welding. At present, high-performance aluminum-magnesium-silicon alloy welding wires for rail transit mainly depend on import, so that the development of a novel aluminum-magnesium-silicon alloy welding wire preparation process continuously improves the quality of domestic aluminum welding wires, and becomes the key work of the research and development of welding wires matched with aluminum profiles at present.
Among the aluminum alloy welding wires imported at present, the ER5356 welding wire with better universality is designed for 5xxx series alloy, and the universal filling material used under the condition of tensile strength not exceeding 276MPa has good color matching performance after anodizing treatment. The aluminum-magnesium-silicon alloy welding wire is designed for 6xxx series wrought aluminum alloy, has better thermal deformation performance, can be strengthened by heat treatment, and has certain tensile strength and elongation after fracture. The aluminum-magnesium-silicon alloy welding wire produced by the existing wrought aluminum alloy grade in China has the problems of unstable product performance and incapability of completely meeting the use requirements on tensile strength and elongation after breakage.
The existing document (publication number CN106048272) provides a preparation method of an aluminum-magnesium-silicon-scandium alloy wire, which comprises the steps of adding a silicon agent, a scandium agent and a magnesium agent into molten aluminum, refining, standing, carrying out online grain refinement treatment, sintering casting, rolling, drawing and the like to finally obtain the aluminum alloy wire with the diameter of 0.15-0.4 mm, wherein the alloy wire needs to be artificially aged for 6-15 hours. However, scandium is expensive, and the addition of scandium inevitably increases the manufacturing cost of the aluminum alloy material. If a proper alloy element can be found to completely or partially replace scandium element to be added into the aluminum alloy, the aluminum alloy can still obtain refining and strengthening effects, and a more economic aluminum alloy product is expected to be developed, so that the application range of the scandium-containing aluminum alloy is expanded.
Disclosure of Invention
The invention mainly aims to provide an aluminum-magnesium-silicon-scandium-zirconium alloy wire, a preparation method and application thereof, and aims to solve the problems that the existing aluminum-silicon-scandium alloy is good in performance and high in cost.
In order to achieve the above object, according to an aspect of the present invention, there is provided a method of manufacturing an aluminum-magnesium-silicon-scandium-zirconium alloy wire, the method including: melting the aluminum ingot to obtain molten aluminum; carrying out first refining treatment on the aluminum molten liquid and a first refining agent to obtain first refined aluminum liquid; carrying out second refining treatment on the first refined aluminum liquid, a magnesium agent, a silicon agent, a scandium agent, a zirconium agent and a second refining agent to obtain second refined aluminum liquid; carrying out grain refinement treatment on the second refined aluminum liquid so that the second refined aluminum liquid comprises 4.5-6% of Mg element, 0.2-0.5% of Si element, 0.15-0.4% of Fe element, 0.05-0.15% of Cu element, 0.1-0.2% of Ti element, 0.05-0.2% of Mn element, 0.05-0.2% of Sc element, 0.05-0.6% of Zr element and the balance of Al element; and sequentially carrying out online degassing, deslagging, casting, rolling, annealing, drawing and annealing treatment on the aluminum liquid obtained in the grain refinement treatment process to obtain the aluminum-magnesium-silicon-scandium-zirconium alloy wire.
Furthermore, in the grain refinement treatment process, the weight ratio of Sc element to Zr element is 1 (1-3).
Further, after the annealing treatment process, the preparation method further comprises the step of carrying out solid solution strengthening treatment on the semi-finished product of the Al-Mg-Si-Sc-Zr alloy wire obtained through the annealing treatment to obtain the Al-Mg-Si-Sc-Zr alloy wire.
Furthermore, the solid solution temperature of the solid solution strengthening treatment is 455-520 ℃, and the solid solution time is 1-3 h.
Furthermore, the purity of the aluminum element in the aluminum ingot is more than or equal to 99.0 wt%; preferably, the magnesium agent is selected from one or more of the group consisting of magnesium ingot, aluminum magnesium master alloy and aluminum magnesium silicon master alloy; preferably, the silicon agent is selected from one or more of the group consisting of an aluminum-silicon master alloy, a pure silicon ingot and an aluminum-silicon-magnesium master alloy; preferably, the scandium agent is an aluminum-scandium master alloy; preferably, the zirconium agent is selected from one or more of the group consisting of an aluminum zirconium master alloy, pure zirconium and an aluminum silicon zirconium master alloy.
Furthermore, the content of silicon element in the aluminum-silicon intermediate alloy is 20-25 wt%; in the aluminum-scandium intermediate alloy, the content of scandium element is 1.8-2.2 wt%; in the aluminum zirconium intermediate alloy, the content of zirconium element is 4-5.5 wt%.
Further, the first refining agent and the second refining agent are respectively and independently selected from NaNO3、NaCl、KCl、Na3AlF6、CaF2、MgCl2、C、C2Cl6And refractory brick powder.
Further, the first refining process further comprises: refining and standing the molten aluminum and a first refining agent in sequence to remove solid slag and obtain a refined intermediate product; and adding a covering agent into the surface of the refining intermediate product to obtain first refined aluminum liquid.
Further, the covering agent is selected from KCl and CaF2、MgCl2、BaCl2And MgF2One or more of the group consisting of.
On the one hand, the application provides the aluminum-magnesium-silicon-scandium-zirconium alloy wire, and the aluminum-magnesium-silicon-scandium-zirconium alloy wire is prepared by the preparation method.
The application further provides an application of the aluminum-magnesium-silicon-scandium-zirconium alloy wire in the field of welding.
By applying the technical scheme of the invention, in the preparation method, scandium has effective grain refinement and recrystallization inhibition effects on the aluminum alloy, so that the aluminum-silicon alloy matrix grains can be refined, and the weldability is improved; zr is introduced to replace part of Sc, so that the production cost of the aluminum-silicon-scandium alloy wire can be effectively reduced. Under the synergistic effect of the components in the second refined aluminum liquid, the aluminum alloy wire prepared by the method has the advantages of uniform structure, small component segregation and low impurity content, and obviously improves the comprehensive mechanical properties of tensile strength, elongation and the like of the aluminum alloy wire. Compared with scandium element, zirconium element has the advantage of low price. Therefore, the Al-Mg-Si-Sc-Zr alloy wire prepared by the method not only can reduce the preparation cost of the Al-Mg-Si-Sc-Zr alloy wire, but also can have high comprehensive mechanical properties such as tensile strength, elongation and the like.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
As described in the background art, the existing aluminum-silicon-scandium alloy has the problems of good performance and high cost. In order to solve the technical problem, the application provides a preparation method of an aluminum-magnesium-silicon-scandium-zirconium alloy wire, which comprises the following steps: melting the aluminum ingot to obtain molten aluminum; carrying out first refining treatment on the aluminum molten liquid and a first refining agent to obtain first refined aluminum liquid; carrying out second refining treatment on the first refined aluminum liquid, a magnesium agent, a silicon agent, a scandium agent, a zirconium agent and a second refining agent to obtain second refined aluminum liquid; carrying out grain refinement treatment on the second refined aluminum liquid so that the second refined aluminum liquid comprises 4.5-6% of Mg element, 0.2-0.5% of Si element, 0.15-0.4% of Fe element, 0.05-0.15% of Cu element, 0.1-0.2% of Ti element, 0.05-0.2% of Mn element, 0.05-0.2% of Sc element, 0.05-0.6% of Zr element and the balance of Al element; and sequentially carrying out online degassing, deslagging, casting, rolling, annealing, drawing and annealing treatment on the aluminum liquid obtained in the grain refinement treatment process to obtain the aluminum-magnesium-silicon-scandium-zirconium alloy wire.
In the first refining treatment process, the addition of the first refining agent can reduce the impurity content in the molten aluminum; in the second refining treatment process, the addition of the second refining agent can not only further reduce the impurity content in the second refined molten aluminum, but also improve the grain refinement degree of the alloy in the subsequent grain refinement process.
In the preparation method, scandium has effective grain refinement and recrystallization inhibition effects on the aluminum alloy, so that the aluminum-silicon alloy matrix grains can be refined, and the weldability is improved; zr is introduced to replace part of Sc, so that the production cost of the aluminum-silicon-scandium alloy wire can be effectively reduced. Under the synergistic effect of the components in the second refined aluminum liquid, the aluminum alloy wire prepared by the method has the advantages of uniform structure, small component segregation and low impurity content, and obviously improves the comprehensive mechanical properties of tensile strength, elongation and the like of the aluminum alloy wire. Compared with scandium element, zirconium element has the advantage of low price. Therefore, the Al-Mg-Si-Sc-Zr alloy wire prepared by the method not only can reduce the preparation cost of the Al-Mg-Si-Sc-Zr alloy wire, but also can have high comprehensive mechanical properties such as tensile strength, elongation and the like.
In a preferred embodiment, the weight ratio of Sc element to Zr element in the grain refining process is 1 (1-3). The weight ratio of Sc and Zr elements includes but is not limited to the above range, and it can be further enhanced by limiting it to the above range; the scandium and the zirconium have synergistic strengthening effect on the aluminum alloy, so that the comprehensive mechanical property of the aluminum alloy wire is further improved. More preferably, the weight ratio of the Sc element to the Zr element during the grain refining treatment is 1:1, 1:2, or 1: 2.5.
In order to further improve the comprehensive mechanical properties of the al-mg-si-sc-zr alloy wire, in a preferred embodiment, after the annealing process, the preparation method further includes performing a solution strengthening treatment on the semi-finished product of the al-mg-si-sc-zr alloy wire obtained by the annealing treatment to obtain the al-mg-si-sc-zr alloy wire.
In a preferred embodiment, the solid solution temperature of the solid solution strengthening treatment step is 455-520 ℃, and the solid solution time is 1-3 h. The solid solution temperature and the solid solution time of the melting process include, but are not limited to, the ranges, and the limitation of the solid solution temperature and the solid solution time in the ranges is beneficial to further improving the comprehensive mechanical property of the aluminum-magnesium-silicon-scandium-zirconium alloy wire. More preferably, the solution temperature of the solution strengthening treatment step is 455, 480, 500 ℃ or 520 ℃.
The aluminum ingot, the silicon agent, the scandium agent and the zirconium agent in the preparation method can adopt the types commonly used in the field. In a preferred embodiment, the purity of the aluminum element in the aluminum ingot is greater than or equal to 99.0 wt%. Preferably, the magnesium agent comprises one or more of the group consisting of but not limited to magnesium ingot, aluminum magnesium intermediate alloy and aluminum magnesium silicon intermediate alloy, wherein the purity of magnesium element in the magnesium ingot is more than or equal to 99.0 wt%; preferably, the silicon agent includes, but is not limited to, one or more of the group consisting of an aluminum-silicon master alloy, a pure silicon ingot, and an aluminum-silicon-magnesium master alloy; preferably, the scandium agent includes, but is not limited to, an aluminum scandium master alloy; preferably, the zirconium agent includes, but is not limited to, one or more of the group consisting of an aluminum zirconium master alloy, pure zirconium, and an aluminum silicon zirconium master alloy. The adoption of the raw materials is beneficial to reducing the impurity content in the aluminum-magnesium-silicon-scandium-zirconium alloy, and further the comprehensive performance of the aluminum-magnesium-silicon-scandium-zirconium alloy is improved. More preferably, in the aluminum-silicon intermediate alloy, the content of the silicon element is 20-25 wt%; in the aluminum-scandium intermediate alloy, the content of scandium element is 1.8-2.2 wt%; in the aluminum zirconium intermediate alloy, the content of zirconium element is 4-5.5 wt%. More preferably, the content of the silicon element in the aluminum-silicon intermediate alloy is 20-25 wt%; the content of scandium element in the aluminum-scandium master alloy is 1.8, 2 wt% or 2.2 wt%; in the aluminum zirconium intermediate alloy, the content of zirconium element is 4 wt%, 5 wt% or 5.5 wt%.
In the above preparation method, the first refining agent and the second refining agentThe refining agent may be one commonly used in the art. In a preferred embodiment, the first refining agent and the second refining agent each independently include, but are not limited to, NaNO3、NaCl、KCl、Na3AlF6、CaF2、MgCl2、C、C2Cl6And refractory brick powder. Compared with other refining agents, the refining agents are favorable for further reducing the impurity content in the Al-Mg-Si-Sc-Zr alloy, and further the comprehensive performance of the Al-Mg-Si-Sc-Zr alloy is improved.
In a preferred embodiment, the first refining process further comprises: refining and standing the molten aluminum and a first refining agent in sequence to remove solid slag and obtain a refined intermediate product; and adding a covering agent into the surface of the refining intermediate product to obtain first refined aluminum liquid. The addition of the blanketing agent may extend the set time of the first refining filtrate. More preferably, the covering agent includes, but is not limited to, KCl, CaF2、MgCl2、BaCl2And MgF2One or more of the group consisting of. Preferably, the covering agent is used in an amount of 0.1 to 0.5% by weight based on the refined intermediate product.
In the preparation method, the aluminum liquid obtained after grain refinement is subjected to online degassing, deslagging, casting, rolling annealing and drawing treatment by adopting a method commonly used in the field. In a preferred embodiment, a three-high mill is adopted in the rolling process, the cast product is rolled into an aluminum alloy rod with the diameter of 9.5-9.6 mm, then the aluminum alloy rod is subjected to goods removal, drawing and other treatments to obtain an aluminum alloy wire with the diameter of 1.6-3 mm, secondary annealing treatment is carried out, and finally solid solution strengthening treatment is carried out to obtain the required product aluminum magnesium silicon scandium zirconium alloy wire. Compared with other diameter ranges, the aluminum alloy rod in the diameter range is adopted for drawing, so that the performance of the aluminum-magnesium-silicon-scandium-zirconium alloy wire is improved.
The application also provides an aluminum-scandium intermediate alloy, and the aluminum-scandium intermediate alloy is prepared by adopting the preparation method. In the preparation method, scandium has effective grain refinement and recrystallization inhibition effects on the aluminum alloy, so that the aluminum-silicon alloy matrix grains can be refined, and the weldability is improved; zr is introduced to replace part of Sc, so that the production cost of the aluminum-silicon-scandium alloy wire can be effectively reduced. Under the synergistic effect of the components in the second refined aluminum liquid, the aluminum alloy wire prepared by the method has the advantages of uniform structure, small component segregation and low impurity content, and obviously improves the comprehensive mechanical properties of tensile strength, elongation and the like of the aluminum alloy wire.
The present application is described in further detail below with reference to specific examples, which should not be construed as limiting the scope of the invention as claimed.
Example 1
The preparation process of the aluminum-magnesium-silicon-scandium-zirconium alloy wire comprises the following steps:
(1) firstly, melting pure aluminum ingot (the purity of aluminum element is more than or equal to 99.9 wt%), adding a first refining agent (NaNO) into the melt after the pure aluminum ingot is melted3、KCl、MgCl2C accounts for 0.3 wt% of the melt and is in a weight ratio of 7:6:6:1, carrying out first refining treatment, standing, carrying out slag skimming treatment, and then uniformly scattering a proper amount of covering agent (KCl, CaF) on the surface of the aluminum melt2、MgCl2、MgF2The weight ratio of the aluminum melt to the aluminum melt is 7:10:68:15, and the aluminum melt accounts for 0.2wt percent of the aluminum melt, and the aluminum melt is used for covering the surface of the melt to obtain a first refined aluminum liquid;
(2) adding a magnesium agent (magnesium ingot, the purity of magnesium element is more than or equal to 99.9 wt%), a silicon agent (aluminum-silicon intermediate alloy, the silicon content is 20 wt%), a scandium agent (aluminum-scandium intermediate alloy, the scandium content is 2 wt%) and a zirconium agent (aluminum-zirconium intermediate alloy, the zirconium content is 5 wt%) into the aluminum liquid obtained in the step (1) according to the designed alloy components, and stirring for 15min until the mixture is uniformly mixed;
(3) second refining agent (KCl, CaF) with nitrogen2、MgCl2、BaCl2Blowing the C into the first refined molten aluminum according to the weight ratio of 38:5:7:44:6, wherein the C accounts for 0.1% of the weight of the first refined molten aluminum and performing second refining treatment to obtain second refined molten aluminum;
(4) standing the second refined aluminum liquid for about 25 min;
(5) adding an aluminum-titanium-boron grain refiner into the second refined aluminum liquid obtained in the step (4) for online grain refining treatment, and controlling the mass percentages of all chemical components in the aluminum liquid to be as follows: 4.53% of Mg, 0.45% of Si, 0.16% of Fe, 0.1% of Cu, 0.15% of Ti, 0.05% of Mn, 0.1% of Sc, 0.2% of Zr and the balance of Al;
(6) degassing and deslagging the aluminum liquid obtained in the step (5) on line, casting, and rolling into an aluminum alloy rod with the diameter of 9.5mm by using a three-high mill;
(7) annealing and drawing the aluminum alloy rod to finally obtain an aluminum alloy wire with the diameter of 1.6mm, and finally annealing the finished product at the annealing temperature of 300 ℃ for 1.5 h;
(8) and (5) carrying out solid solution treatment on the aluminum alloy wire obtained in the step (7), wherein the solid solution temperature is 455 ℃, and the solid solution time is 2 hours.
The performance of the Al-Mg-Si-Sc-Zr alloy wire prepared in the embodiment and a common Al-Mg-Si-Sc-Zr alloy single wire prepared by the same process are tested (the test method is shown in GB/T3195-2008), and the test results are shown in Table 1.
TABLE 1
| Tensile strength (MPa) | Elongation (%) | |
| Common Al-Mg-Si-Sc-Zr alloy wire | 448 | 6.9 |
| The invention relates to an Al-Mg-Si-Sc-Zr alloy wire | 472 | 8.2 |
Example 2
The preparation process of the aluminum-magnesium-silicon-scandium-zirconium alloy wire comprises the following steps:
(1) firstly, melting pure aluminum ingot (the purity of aluminum element is more than or equal to 99.9 wt%), adding a first refining agent (NaNO) into the melt after the pure aluminum ingot is melted3、KCl、MgCl2C accounts for 0.3 wt% of the melt and is in a weight ratio of 7:6:6:1, carrying out first refining treatment, standing, carrying out slag skimming treatment, and then uniformly scattering a proper amount of covering agent (KCl, CaF) on the surface of the aluminum melt2、MgCl2、MgF2The weight ratio of the aluminum melt to the aluminum melt is 7:10:68:15, and the aluminum melt accounts for 0.2wt percent of the aluminum melt, and the aluminum melt is used for covering the surface of the melt to obtain a first refined aluminum liquid;
(2) adding a magnesium agent (magnesium ingot, the purity of magnesium element is more than or equal to 99.9 wt%), a silicon agent (aluminum-silicon intermediate alloy, the silicon content is 20 wt%), a scandium agent (aluminum-scandium intermediate alloy, the scandium content is 2 wt%) and a zirconium agent (aluminum-zirconium intermediate alloy, the zirconium content is 5 wt%) into the aluminum liquid obtained in the step (1) according to the designed alloy components, and stirring for 15min until the mixture is uniformly mixed;
(3) second refining agent (KCl, CaF) with nitrogen2、MgCl2、BaCl2Blowing the C into the first refined molten aluminum according to the weight ratio of 38:5:7:44:6, wherein the C accounts for 0.1% of the weight of the first refined molten aluminum and performing second refining treatment to obtain second refined molten aluminum;
(4) standing the second refined aluminum liquid for about 25 min;
(5) adding an aluminum-titanium-boron grain refiner into the second refined aluminum liquid obtained in the step (4) for online grain refining treatment, and controlling the mass percentages of all chemical components in the aluminum liquid to be as follows: 5.48 percent of Mg, 0.28 percent of Si, 0.15 percent of Fe, 0.1 percent of Cu, 0.15 percent of Ti, 0.08 percent of Mn, 0.2 percent of Sc, 0.2 percent of Zr and the balance of Al;
(6) degassing and deslagging the aluminum liquid obtained in the step (5) on line, casting, and rolling into an aluminum alloy rod with the diameter of 9.5mm by using a three-high mill;
(7) annealing and drawing the aluminum alloy rod to finally obtain an aluminum alloy wire with the diameter of 1.6mm, and finally annealing the finished product at the annealing temperature of 300 ℃ for 1.5 h;
(8) and (5) carrying out solid solution treatment on the aluminum alloy wire obtained in the step (7), wherein the solid solution temperature is 455 ℃, and the solid solution time is 2 hours.
The linear energy ratio of the aluminum-magnesium-silicon-scandium-zirconium alloy wire prepared in the embodiment and a common aluminum-magnesium-silicon-scandium-zirconium alloy monofilament prepared by the same process is shown in table 2.
TABLE 2
| Tensile strength (MPa) | Elongation (%) | |
| Common Al-Mg-Si-Sc-Zr alloy wire | 457 | 7.1 |
| The invention relates to an Al-Mg-Si-Sc-Zr alloy wire | 481 | 9.4 |
Example 3
The differences from example 1 are:
after grain refinement treatment, the second refined aluminum liquid comprises 4.53% of Mg, 0.45% of Si, 0.16% of Fe, 0.1% of Cu, 0.15% of Ti, 0.05% of Mn, 0.1% of Sc, 0.4% of Zr and the balance of Al.
The performance test method is the same as that of example 1, and the properties of the Al-Mg-Si-Sc-Zr alloy wire prepared by the embodiment are as follows: the tensile strength was 459MPa, and the elongation was 7.2%.
Example 4
The differences from example 1 are:
the solid solution temperature of the solid solution strengthening treatment is 400 ℃, and the solid solution time is 4 h.
The performance test method is the same as that of example 1, and the properties of the Al-Mg-Si-Sc-Zr alloy wire prepared by the embodiment are as follows: the tensile strength is 451MPa, and the elongation is 6.7 percent
Comparative example 1
After grain refinement treatment, the second refined aluminum liquid comprises 3% of Mg element, 0.1% of Si element, 0.5% of Fe element, 0.2% of Cu element, 0.05% of Ti element, 0.4% of Mn element, 0.02% of Sc element, 0.3% of Zr element and the balance of Al element.
The performance test method is the same as that of example 1, and the properties of the Al-Mg-Si-Sc-Zr alloy wire prepared by the embodiment are as follows: the tensile strength was 433MPa and the elongation was 6.5%.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
comparing examples 1 to 4 and comparative example 1, it can be seen that limiting the amount of each element in the al-mg-si-sc-zr alloy wire within the scope of the present application is beneficial to improving the overall performance of the al-mg-si-sc-zr alloy wire.
Comparing examples 1 and 3, it is found that limiting the weight ratio of Sc to Zr to the preferred range of the present application is beneficial to improving the overall performance of the al-mg-si-Sc-Zr alloy wire.
Comparing examples 1 and 4, it is found that limiting the solution temperature and time to the preferred ranges of the present application is beneficial to improving the overall performance of the al-mg-si-sc-zr alloy wire.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (7)
1. The preparation method of the aluminum-magnesium-silicon-scandium-zirconium alloy wire is characterized by comprising the following steps of:
melting the aluminum ingot to obtain molten aluminum;
carrying out first refining treatment on the aluminum molten liquid and a first refining agent to obtain first refined aluminum liquid;
carrying out second refining treatment on the first refined aluminum liquid, a magnesium agent, a silicon agent, a scandium agent, a zirconium agent and a second refining agent to obtain second refined aluminum liquid;
the second refined aluminum liquid comprises 4.5-6% of Mg element, 0.2-0.5% of Si element, 0.15-0.4% of Fe element, 0.05-0.15% of Cu element, 0.1-0.2% of Ti element, 0.05-0.2% of Mn element, 0.05-0.2% of Sc element, 0.05-0.6% of Zr element and the balance of Al element;
carrying out grain refinement treatment on the second refined aluminum liquid;
sequentially carrying out online degassing, deslagging, casting, rolling, primary annealing, drawing and secondary annealing treatment on the aluminum liquid obtained in the grain refinement treatment process to obtain the aluminum-magnesium-silicon-scandium-zirconium alloy wire;
the method is characterized in that in the grain refinement treatment process, the weight ratio of Sc element to Zr element is 1 (1-3), and the first refining agent is NaNO3、KCl、MgCl2And C in a weight ratio of 7:6:6: 1; the second refining agent is KCl or CaF2、MgCl2、BaCl2And C in a weight ratio of 38:5:7:44: 6;
after the first annealing treatment process is performed, the preparation method further includes: and carrying out solid solution strengthening treatment on the semi-finished product of the aluminum-magnesium-silicon-scandium-zirconium alloy wire obtained by the first annealing treatment to obtain the aluminum-magnesium-silicon-scandium-zirconium alloy wire, wherein the solid solution temperature of the solid solution strengthening treatment is 455-520 ℃, and the solid solution time is 1-3 h.
2. The preparation method according to claim 1, wherein the purity of the aluminum element in the aluminum ingot is more than or equal to 99.0 wt%;
the magnesium agent is selected from one or more of magnesium ingot, aluminum magnesium intermediate alloy and aluminum magnesium silicon intermediate alloy;
the silicon agent is selected from one or more of the group consisting of an aluminum-silicon intermediate alloy, a pure silicon ingot and an aluminum-silicon-magnesium intermediate alloy;
the scandium agent is an aluminum-scandium intermediate alloy;
the zirconium agent is selected from one or more of the group consisting of aluminum zirconium master alloy, pure zirconium and aluminum silicon zirconium master alloy.
3. The preparation method according to claim 2, wherein the content of the silicon element in the aluminum-silicon master alloy is 20 to 25 wt%; in the aluminum-scandium intermediate alloy, the content of scandium element is 1.8-2.2 wt%; in the aluminum zirconium intermediate alloy, the content of zirconium element is 4-5.5 wt%.
4. The production method according to any one of claims 1 to 3, wherein the first refining process further includes:
refining and standing the molten aluminum and a first refining agent in sequence to remove solid slag and obtain a refined intermediate product;
and adding a covering agent into the surface of the refined intermediate product to obtain the first refined aluminum liquid.
5. The method of claim 4, wherein the coating agent is selected from KCl and CaF2、MgCl2、BaCl2And MgF2One or more of the group consisting of.
6. An Al-Mg-Si-Sc-Zr alloy wire, characterized in that it is produced by the method according to any one of claims 1 to 5.
7. The use of the wire of claim 6 in the field of welding.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042627A1 (en) * | 1998-02-20 | 1999-08-26 | Corus Aluminium Walzprodukte Gmbh | Formable, high strength aluminium-magnesium alloy material for application in welded structures |
| CA2439589A1 (en) * | 2001-03-02 | 2002-09-12 | Pechiney Rhenalu | High temperature aluminum alloy brazing sheet and methods of manufacturing and uses therefor |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| CN106048272A (en) * | 2016-06-29 | 2016-10-26 | 焦作市圣昊铝业有限公司 | Preparation method of aluminum, magnesium, silicon and scandium alloy wire |
-
2019
- 2019-07-03 CN CN201910593176.5A patent/CN110257654B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042627A1 (en) * | 1998-02-20 | 1999-08-26 | Corus Aluminium Walzprodukte Gmbh | Formable, high strength aluminium-magnesium alloy material for application in welded structures |
| CA2439589A1 (en) * | 2001-03-02 | 2002-09-12 | Pechiney Rhenalu | High temperature aluminum alloy brazing sheet and methods of manufacturing and uses therefor |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| CN106048272A (en) * | 2016-06-29 | 2016-10-26 | 焦作市圣昊铝业有限公司 | Preparation method of aluminum, magnesium, silicon and scandium alloy wire |
Non-Patent Citations (1)
| Title |
|---|
| ER5356焊丝中Sc、Zr、Er对7A52铝合金焊接性能的影响;张友法 等;《材料研究学报》;20130630;第27卷(第3期);第287-288页 * |
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