CN110257653A - Aluminium silicon scandium zirconium alloy wire, preparation method and application - Google Patents

Aluminium silicon scandium zirconium alloy wire, preparation method and application Download PDF

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CN110257653A
CN110257653A CN201910593175.0A CN201910593175A CN110257653A CN 110257653 A CN110257653 A CN 110257653A CN 201910593175 A CN201910593175 A CN 201910593175A CN 110257653 A CN110257653 A CN 110257653A
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aluminium
scandium
preparation
alloy wire
zirconium
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李诺
韩国强
王玮玮
杜尚超
付国燕
姚心
孙宁磊
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China ENFI Engineering Corp
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China ENFI Engineering Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • 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
    • 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
    • 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 present invention provides a kind of aluminium silicon scandium zirconium alloy wire, preparation method and applications.The preparation method includes: to melt aluminium ingot, obtain aluminium molten liquid, it is handled through the first refining treatment, the second refining treatment and crystal grain refinement, so that the second refinery molten aluminium includes Si element 4.5~7%, 0.15~0.25wt% of Fe element, 0.01~0.5wt% of Mg element, 0.15~0.3wt% of Cu element, 0.1~0.2wt% of Ti element, 0.02~0.05wt% of Mn element, 0.02~0.2wt% of Sc element, Zr 0.05~0.4wt% of element, surplus is Al element；Then online degasification, slagging-off, casting, rolling, annealing, drawing and annealing are successively carried out, obtains aluminium silicon scandium zirconium alloy wire.Above-mentioned aluminium silicon scandium zirconium alloy wire has the advantages that preparation cost is low, tensile strength is high and elongation is high.

Description

Aluminium silicon scandium zirconium alloy wire, preparation method and application
Technical field
The present invention relates to technical field of aluminum alloy technology, in particular to a kind of aluminium silicon scandium zirconium alloy wire, preparation method and Using.
Background technique
High-performance aluminium alloy is as spacecraft and the light-weighted preferred material of aircraft and high-speed rail train, new-energy automobile Light-weighted important materials.It necessarily be unable to do without welding technique in application and the popularization of Aeronautics and Astronautics, field of track traffic, and Research at present for the adapted welding wire of this kind of high performance alloys and its welding performance is still less.Therefore, high-performance aluminum is developed The adapted welding wire product of alloy is extremely urgent.
China pays much attention to the development of new material industry, and rare earth is that development is new as non-renewable grand strategy resource The indispensable key element of material industry." Al-Si-Sc welding wire " is included in and gives priority to product by China.Therefore, research contains The technology of preparing and its performance of scandium-aluminum alloy and its adapted solder wire material optimize state to the application range for expanding Mo-bearing granitoid The manufacturing process for producing high-performance aluminium alloy welding wire has the application value of important theory significance.
Scandium is that the best crystal grain refinement of aluminium alloy and recrystallization resist element, ScAl3Change as between typical Al-Sc metal Object is closed, it is minimum with α-Al lattice equations, it is the most effective heterogeneous forming core substrate of α-Al up to now.Trace alloying element Sc's Addition can effectively refining aluminum alloy grain structure, improve its mechanical property, while improving the solderability of aluminium alloy.Existing literature (Authorization Notice No. CN106048272) provides a kind of preparation method of al-mg-si scandium alloy silk, which includes passing through Silicea, scandium agent, magnesia mixture, then the online crystal grain refinement processing of refined, standing, addition aluminium titanium boron wire, burning casting, three are added into molten aluminum The processes such as roller mill rolling, cold drawing, acquisition diameter are 0.15~0.4mm aluminum-alloy wire, and alloy wire was needed by 6~15 hours Artificial aging.
Another prior art (Authorization Notice No. CN106048337) provides a kind of preparation method of aluminum-alloy wire, should Preparation method includes being handled by carrying out cold drawing twice to al-mg-si scandium alloy bar, and scandium is carried out between cold drawing twice It is precipitated and solution strengthening is handled, aluminium alloy monofilament obtained is made to be able to satisfy the requirement of tensile strength, elongation and conductivity, it can be real Now produce in batches.
But scandium is expensive, addition scandium element will cause the manufacturing cost of aluminum alloy materials to increase.If conjunction can be found Suitable alloying element substitutes scandium element completely or partially and is added in aluminium alloy, remains to enable aluminum alloy to be refined, strengthening effect, It is expected to develop more economic Al-alloy products, expands the application range of Mo-bearing granitoid.
Summary of the invention
The main purpose of the present invention is to provide a kind of aluminium silicon scandium zirconium alloy wire, preparation method and applications, existing to solve The better performances of some aluminium silicon scandium alloys, but the problem of higher cost.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of preparation of aluminium silicon scandium zirconium alloy wire Method, the preparation method include: to melt aluminium ingot, obtain aluminium molten liquid；Aluminium molten liquid and the first refining agent is set to carry out the first essence Refining processing, obtains the first refinery molten aluminium；First refinery molten aluminium and silicea, scandium agent, zirconium agent and the second refining agent are subjected to the second essence Refining processing, obtains the second refinery molten aluminium；Crystal grain refinement processing is carried out to the second refinery molten aluminium, so that the second refinery molten aluminium includes Si Element 4.5~7%, 0.15~0.25wt% of Fe element, 0.01~0.5wt% of Mg element, 0.15~0.3wt% of Cu element, Ti 0.1~0.2wt% of element, 0.02~0.05wt% of Mn element, 0.02~0.2wt% of Sc element, Zr element 0.05~ 0.4wt%, surplus are Al element；The molten aluminum obtained by crystal grain refinement treatment process is set successively to carry out online degasification, remove the gred, pour Casting, rolling, annealing, drawing and annealing, obtain aluminium silicon scandium zirconium alloy wire.
Further, in crystal grain refinement treatment process, the weight ratio of Sc element and Zr element is 1:(1~3).
Further, after carrying out annealing process, preparation method further includes that will make annealing treatment obtained aluminium silicon scandium Zirconium alloy wire semi-finished product carry out solution strengthening processing, obtain aluminium silicon scandium zirconium alloy wire.
Further, the solid solubility temperature of solution strengthening processing step is 400~550 DEG C, and solution time is 1~3h.
Further, in aluminium ingot aluminium element purity >=99.0wt%；Preferably, silicea is selected from aluminium silicon intermediate alloy, pure One of group of silicon ingot and aluminium silicon magnesium intermediate alloy composition is a variety of；Preferably, scandium agent is selected from scandium bearing master alloy；It is preferred that Ground, zirconium agent are selected from one of group of aluminium zirconium hardener, pure zirconium and aluminium silicon zirconium intermediate alloy composition or a variety of.
Further, in aluminium silicon intermediate alloy, the content of element silicon is 20~25wt%；In scandium bearing master alloy, scandium member The content of element is 1.8~2.2wt%；In aluminium zirconium hardener, the content of zr element is 4~5.5wt%.
Further, the first refining agent and the second refining agent are separately selected from NaNO3、NaCl、Na3AlF6、C、C2Cl6 With one of the group of refractory brick powder composition or a variety of.
Further, the first refining process further include: make aluminium molten liquid and the first refining agent successively by refining and Stewing process removes solid slag, obtains refining intermediate product；Coverture is added in refining intermediate product surface, obtains the first refining Molten aluminum.
Further, coverture is selected from NaCl, KCl, Na3AlF6、NaCO3、BaCl2And CaF2One of group of composition or It is a variety of.
The another aspect of the application additionally provides a kind of aluminium silicon scandium zirconium alloy wire, and aluminium silicon scandium zirconium alloy wire uses above-mentioned preparation Method is made.
The another aspect of the application additionally provides application of the aluminium silicon scandium zirconium alloy wire in welding field.
It applies the technical scheme of the present invention, in above-mentioned preparation method, scandium element presses down aluminum grain refinement and recrystallization Production is used, and can be refined alusil alloy matrix grain, be improved its solderability；Zr element substitution part Sc element is introduced, can effectively be dropped The production cost of low aluminum silicon scandium alloy silk.And in the second refinery molten aluminium under the synergistic effect of each component, so that prepared by this method Aluminum-alloy wire even tissue out, component segregation is small, and impurity content is few, and significantly improves aluminum-alloy wire tensile strength and elongation Deng comprehensive mechanical property.Simultaneously compared to scandium element, zr element has the advantages that cheap.Thus use above method system The preparation cost of low aluminum silicon scandium zirconium alloy wire can not only be dropped by obtaining aluminium silicon scandium zirconium alloy wire, additionally it is possible to make it have higher tension The comprehensive mechanical property of intensity and elongation etc..
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
As described in background technique, the better performances of existing aluminium silicon scandium alloy, but the problem of higher cost.In order to Above-mentioned technical problem is solved, this application provides a kind of preparation method of aluminium silicon scandium zirconium alloy wire, which includes: by aluminium Ingot fusing, obtains aluminium molten liquid；So that aluminium molten liquid and the first refining agent is carried out the first refining treatment, obtains the first refinery molten aluminium； First refinery molten aluminium and silicea, scandium agent, zirconium agent and the second refining agent are subjected to the second refining treatment, obtain the second refinery molten aluminium； Crystal grain refinement processing is carried out to the second refinery molten aluminium, so that the second refinery molten aluminium includes Si element 4.5~7%, Fe element 0.15 0.01~0.5wt% of~0.25wt%, Mg element, 0.15~0.3wt% of Cu element, 0.1~0.2wt% of Ti element, Mn element 0.02~0.05wt%, 0.02~0.2wt% of Sc element, Zr 0.05~0.4wt% of element, surplus are Al element；Make by crystalline substance The molten aluminum that grain micronization processes process obtains successively carries out online degasification, slagging-off, casting, rolling, annealing, drawing and annealing, Obtain aluminium silicon scandium zirconium alloy wire.
In first refining process, the addition of the first refining agent can reduce the impurity content in aluminium molten liquid, and second In refining process, the addition of the second refining agent can not only further decrease the impurity content in the second refinery molten aluminium, also It can be improved the crystal grain refinement degree of alloy in subsequent grain refinement process.
In above-mentioned preparation method, scandium element can refine alusil alloy to aluminum grain refinement and recrystallization inhibiting effect Matrix grain improves its solderability；Zr element substitution part Sc element is introduced, can effectively reduce being produced into for aluminium silicon scandium alloy silk This.And in the second refinery molten aluminium under the synergistic effect of each component, so that the aluminum-alloy wire even tissue that this method is prepared, at Point segregation is small, and impurity content is few, and the comprehensive mechanical property for significantly improving aluminum-alloy wire tensile strength and elongation etc..Same phase Than in scandium element, zr element has the advantages that cheap.Aluminium silicon scandium zirconium alloy wire thus is made using the above method can not only The preparation cost of low aluminum silicon scandium zirconium alloy wire enough drops, additionally it is possible to make it have the resultant force of higher tensile strength and elongation etc. Learn performance.
In a kind of preferred embodiment, in crystal grain refinement treatment process, the weight ratio of Sc element and Zr element is 1:(1 ~3).The weight ratio of Sc, Zr element includes but is not limited to above range, and being limited can further increase within the above range Strong two kinds of elements of scandium zirconium are to the cooperative reinforcing effect of aluminium silicon scandium zircaloy, to further increase the synthesis of aluminium silicon scandium zirconium alloy wire Mechanical property.It is highly preferred that the weight ratio of Sc element and Zr element is 1:1,1:2,1:2.5,1:3.
In order to further increase the comprehensive mechanical property of aluminium silicon scandium zirconium alloy wire, in a kind of preferred embodiment, into After row annealing process, above-mentioned preparation method further includes that will make annealing treatment obtained aluminium silicon scandium zirconium alloy wire semi-finished product to carry out Solution strengthening processing, obtains aluminium silicon scandium zirconium alloy wire.
In a kind of preferred embodiment, the solid solubility temperature of solution strengthening processing step is 400~550 DEG C, solution time For 1~3h.The solid solubility temperature and solution time of fusion process include but is not limited to above range, and are limited to above range Inside be conducive to further increase the comprehensive mechanical property of aluminium silicon scandium zirconium alloy wire.It is highly preferred that solid solubility temperature is 415~450 DEG C.
Aluminium ingot, silicea, scandium agent, zirconium agent can use type commonly used in the art in above-mentioned preparation method.A kind of preferred Embodiment in, purity >=99.0wt% of aluminium element in aluminium ingot；Preferably, silicea include but is not limited to aluminium silicon intermediate alloy, One of group of pure silicon ingot and aluminium silicon magnesium intermediate alloy composition is a variety of；Preferably, scandium agent includes but is not limited among aluminium scandium Alloy；Preferably, zirconium agent includes but is not limited to one of aluminium zirconium hardener, pure zirconium and group of aluminium silicon zirconium intermediate alloy composition Or it is a variety of.The impurity content in aluminium silicon scandium zircaloy is advantageously reduced using above-mentioned raw materials, and then it is comprehensive to promote aluminium silicon scandium zircaloy Close performance.It is highly preferred that the content of element silicon is 20~25wt% in aluminium silicon intermediate alloy；In scandium bearing master alloy, scandium element Content be 1.8~2.2wt%；In aluminium zirconium hardener, the content of zr element is 4~5.5wt%.It is highly preferred that in aluminium silicon Between in alloy, the content of element silicon is 20~25wt%, and in scandium bearing master alloy, the content of scandium element is 2wt%；The aluminium zirconium In intermediate alloy, the content of zr element is 5wt%.
In above-mentioned preparation method, the first refining agent and the second refining agent can use type commonly used in the art.In one kind In preferred embodiment, the first refining agent and the second refining agent separately include but is not limited to NaNO3、NaCl、Na3AlF6、 C and C2Cl6One of group of composition is a variety of.Compared to other refining agents, be conducive to further using above-mentioned several refining agents The impurity content in low aluminum silicon scandium zircaloy is dropped, and then promotes aluminium silicon scandium zircaloy comprehensive performance.
In a kind of preferred embodiment, the first refining process further include: make aluminium molten liquid and the first refining agent according to It is secondary to remove solid slag by refining and stewing process, obtain refining intermediate product；Coverture is added in refining intermediate product surface, Obtain the first refinery molten aluminium.The addition of coverture can extend the setting time of the first refining filtrate.It is highly preferred that coverture packet It includes but is not limited to NaCl, KCl, Na3AlF6、NaCO3、BaCl2And CaF2One of group of composition is a variety of.Preferably, to account for The weight of intermediate product is refined, the dosage of coverture is 0.1~0.5%.
Above-mentioned preparation method includes that the molten aluminum obtained after crystal grain refinement is carried out online degasification, slagging-off, casting, mill-annealed It can be carried out using method commonly used in the art with drawing process.In a kind of preferred embodiment, the operation of rolling uses three Product after casting is rolled into the aluminium alloy rod of 9.5~9.6mm of diameter by roller mill, then aluminium alloy rod is in short supply again, The processing such as drawing, obtains the aluminum-alloy wire of 1.6~3mm, is carrying out double annealing processing, is finally carrying out solution strengthening processing, obtain To required product aluminium silicon scandium zirconium alloy wire.Compared to other diameter ranges, using the aluminium alloy rod in above-mentioned diameter range into Row drawing is conducive to improve the performance of aluminium silicon scandium zirconium alloy wire.
The another aspect of the application additionally provides a kind of scandium bearing master alloy, and scandium bearing master alloy uses above-mentioned preparation method It is made.In above-mentioned preparation method, scandium element can refine the aluminium effective crystal grain refinement of silicon scandium zircaloy and recrystallization inhibiting effect Alusil alloy matrix grain improves its solderability；Zr element substitution part Sc element is introduced, can effectively reduce aluminium silicon scandium alloy silk Production cost.And in the second refinery molten aluminium under the synergistic effect of each component, so that the aluminium silicon scandium zirconium that this method is prepared closes Spun gold even tissue, component segregation is small, and impurity content is few, and significantly improve aluminium silicon scandium zirconium alloy wire tensile strength and elongation etc. Comprehensive mechanical property.
The application is described in further detail below in conjunction with specific embodiment, these embodiments should not be understood as limitation originally Apply for range claimed.
Embodiment 1
The preparation process of the aluminium silicon scandium zirconium alloy wire of present embodiment is according to the following steps:
(1) fine aluminium ingot (aluminium element purity >=99.9wt%) is melted first, first is added into melt after its fusing Refining agent (NaCl, NaNO3, C, refractory brick powder weight ratio be 6:7:1:6, the percentage composition for accounting for melt is 0.3wt%) carry out the One refining treatment carries out processing of skimming after standing, later aluminium melt surface equably sprinkle appropriate coverture (KCl, NaCl, Na3AlF6Weight ratio is 47:35:18, accounts for the 0.2wt% of aluminum melt), with spread evenly cover bath surface be it is appropriate, obtain First refinery molten aluminium；
(2) silicea (aluminium silicon magnesium intermediate alloy, silicon content are added in step (1) molten aluminum by designed alloying component 20wt%), scandium agent (scandium bearing master alloy, the amount 2wt% containing scandium), zirconium agent (aluminium zirconium hardener, the amount 5wt% containing zirconium), stirring 10min to be uniformly mixed；
(3) with nitrogen by the second refining agent (NaNO3、C2Cl6, NaCl, C, refractory brick powder weight ratio be 7:1:5:1:6, account for The weight percentage of first refinery molten aluminium is 0.1%) to be blown into the first refinery molten aluminium to carry out the second refining treatment, obtains second Refinery molten aluminium；
(4) the second refinery molten aluminium is stood into about 25min；
(5) aluminium Ti, B grain graining agent is added into (4) second refinery molten aluminium of step and carries out online crystal grain refinement processing, control Each chemical component weight percentage in molten aluminum processed are as follows: Si element 4.7%, Fe element 0.15%, Mg element 0.5%, Cu element 0.2%, Ti element 0.15%, Mn element 0.02%, Sc element 0.2%, Zr element 0.2%, surplus are Al element；
(6) it by the online degasification of molten aluminum obtained by step (5), slagging-off, casts, then be rolled into diameter through three-high mill The aluminium silicon scandium zircaloy bar of 9.5mm；
(7) aluminium silicon scandium zircaloy bar is annealed, drawing, it is final to obtain diameter 1.6mm aluminium silicon scandium zirconium alloy wire, finally Carry out finished products processing, 325 DEG C of annealing temperature), anneal soaking time 1.5h；
(8) aluminium silicon scandium zirconium alloy wire obtained by step (7) carries out solution treatment, and solid solubility temperature is 415 DEG C, and solution time is 1.5h。
The conventional aluminium silicon scandium zircaloy monofilament lines of aluminium silicon scandium zirconium alloy wire prepared by the present embodiment and same process preparation Performance is tested (test method is shown in GB/T 3195-2008), and test result is shown in Table 1.
Table 1
Tensile strength (MPa) Elongation (%)
Conventional aluminium silicon alloy wire 261 7.3
Aluminium silicon scandium zirconium alloy wire 282 8.6
Embodiment 2
The preparation process of the aluminium silicon scandium zirconium alloy wire of present embodiment is according to the following steps:
(1) fine aluminium ingot (aluminium element purity >=99.9wt%) is melted first, first is added into melt after its fusing Refining agent (NaCl, NaNO3, C, refractory brick powder weight ratio be 31:35:6:28, account for melt percentage composition be 0.3wt%) carry out First refining treatment carries out processing of skimming after standing, later aluminium melt surface equably sprinkle appropriate coverture (KCl, NaCl、Na3AlF6Weight ratio is 47:35:18, accounts for the 0.2wt% of aluminum melt), obtain the first refinery molten aluminium；
(2) silicea (aluminium silicon magnesium intermediate alloy, silicon content are added in step (1) molten aluminum by designed alloying component 25wt%), scandium agent (scandium bearing master alloy, the amount 1.8wt% containing scandium), zirconium agent (aluminium zirconium hardener, the amount 5wt% containing zirconium), stirring 20min to be uniformly mixed；
(3) with nitrogen by the second refining agent (NaNO3、C2Cl6, NaCl, C, refractory brick powder weight ratio be 35:4:27:6:28, The weight percentage for accounting for the first refinery molten aluminium is 0.1%) to be blown into the first refinery molten aluminium and carry out the second refining treatment, obtains the Two refinery molten aluminiums；
(4) the second refinery molten aluminium is stood into about 25min；
(5) aluminium Ti, B grain graining agent is added into (4) second refinery molten aluminium of step and carries out online crystal grain refinement processing, control Each chemical component weight percentage in molten aluminum processed are as follows: Si element 6.5%, Fe element 0.15%, Mg element 0.5%, Cu element 0.18%, Ti element 0.11%, Mn element 0.02%, Sc element 0.2%, Zr element 0.4%, surplus are Al element；
(6) it by the online degasification of molten aluminum obtained by step (5), slagging-off, casts, then be rolled into diameter through three-high mill The aluminium silicon scandium zircaloy bar of 9.5mm；
(7) aluminium silicon scandium zircaloy bar is annealed, drawing, it is final to obtain diameter 1.6mm aluminium silicon scandium zirconium alloy wire, finally Carry out finished products processing, 325 DEG C of annealing temperature), anneal soaking time 2h；
(8) aluminium silicon scandium zirconium alloy wire obtained by step (7) carries out solution treatment, and solid solubility temperature is 450 DEG C, and solution time is 2h。
The conventional aluminium silicon scandium zircaloy monofilament lines of aluminium silicon scandium zirconium alloy wire prepared by the present embodiment and same process preparation Performance is tested (test method is shown in GB/T 3195-2008), and test result is shown in Table 2.
Table 2
Tensile strength (MPa) Elongation (%)
Conventional aluminium silicon alloy wire 272 6.9
Aluminium silicon scandium zirconium alloy wire 297 8.1
Embodiment 3
With the difference of embodiment 1 are as follows:
After crystal grain refinement processing, by weight percentage, the second refinery molten aluminium includes Si element 4.7%, Fe element 0.15%, Mg element 0.5%, Cu element 0.2%, Ti element 0.15%, Mn element 0.02%, Sc element 0.1%, Zr element 0.4%, surplus is Al element.
Performance test methods are with embodiment 1, and aluminium silicon scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tensile strength For 269MPa, elongation 7.1%.
Embodiment 4
With the difference of embodiment 1 are as follows:
The solid solubility temperature of solution strengthening processing is 350 DEG C, solution time 4h.
Performance test methods are with embodiment 1, and aluminium silicon scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tensile strength For 258MPa, elongation 6.9%.
Comparative example 1
After crystal grain refinement processing, by weight percentage, the second refinery molten aluminium includes Si element 3.5%, Fe element 0.1%, Mg element 0.3%, Cu element 0.4%, Ti element 0.15%, Mn element 0.04%, Sc element 0.2%, Zr element 0.6%, surplus is Al element.
Performance test methods are with embodiment 1, and aluminium silicon scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tensile strength For 249MPa, elongation 6.7%.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Comparing embodiment 1 to 4 and comparative example 1 are it is found that be limited to the application for the amount of each element in aluminium silicon scandium zirconium alloy wire Be conducive to improve the comprehensive performance of aluminium silicon scandium zirconium alloy wire in the range of protection.
Comparing embodiment 1 and 3 is conducive to improve it is found that the weight ratio of Sc and Zr is limited in the preferred range of the application The comprehensive performance of aluminium silicon scandium zirconium alloy wire.
Comparing embodiment 1 and 4 is conducive to improve it is found that solid solubility temperature and time are limited in the preferred range of the application The comprehensive performance of aluminium silicon scandium zirconium alloy wire.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (11)

1. a kind of preparation method of aluminium silicon scandium zirconium alloy wire, which is characterized in that the preparation method includes:
Aluminium ingot is melted, aluminium molten liquid is obtained；
So that the aluminium molten liquid and the first refining agent is carried out the first refining treatment, obtains the first refinery molten aluminium；
First refinery molten aluminium and silicea, scandium agent, zirconium agent and the second refining agent are subjected to the second refining treatment, obtain the second essence Aluminium metallurgy liquid；
To second refinery molten aluminium carry out crystal grain refinement processing so that second refinery molten aluminium include Si element 4.5~ 7%, 0.15~0.25wt% of Fe element, 0.01~0.5wt% of Mg element, 0.15~0.3wt% of Cu element, Ti element 0.1~ 0.02~0.05wt% of 0.2wt%, Mn element, 0.02~0.2wt% of Sc element, Zr 0.05~0.4wt% of element, surplus Al Element；
Make the molten aluminum obtained by the crystal grain refinement treatment process successively carry out online degasification, slagging-off, casting, rolling, annealing, Drawing and annealing obtain the aluminium silicon scandium zirconium alloy wire.
2. preparation method according to claim 1, which is characterized in that in crystal grain refinement treatment process, the Sc element with The weight ratio of the Zr element is 1:(1~3).
3. preparation method according to claim 1 or 2, which is characterized in that after carrying out the annealing process, institute Stating preparation method further includes that will make annealing treatment obtained aluminium silicon scandium zirconium alloy wire semi-finished product to carry out solution strengthening processing, is obtained described Aluminium silicon scandium zirconium alloy wire.
4. preparation method according to claim 3, which is characterized in that the solid solubility temperature of the solution strengthening processing step is 400~550 DEG C, solution time is 1~3h.
5. preparation method according to claim 1 or 2, which is characterized in that the purity of aluminium element in the aluminium ingot >= 99.0wt%；
Preferably, the silicea be selected from aluminium silicon intermediate alloy, pure silicon ingot and aluminium silicon magnesium intermediate alloy composition one of group or It is a variety of；
Preferably, the scandium agent is selected from scandium bearing master alloy；
Preferably, the zirconium agent is selected from one of group of aluminium zirconium hardener, pure zirconium and aluminium silicon zirconium intermediate alloy composition or more Kind.
6. preparation method according to claim 5, which is characterized in that in the aluminium silicon intermediate alloy, the content of element silicon For 20~25wt%；In the scandium bearing master alloy, the content of scandium element is 1.8~2.2wt%；The aluminium zirconium hardener In, the content of zr element is 4~5.5wt%.
7. preparation method according to claim 1, which is characterized in that first refining agent and second refining agent point Not independently selected from NaNO3、NaCl、Na3AlF6、C、C2Cl6With one of the group of refractory brick powder composition or a variety of.
8. preparation method according to any one of claim 1 to 7, which is characterized in that first refining process Further include:
The aluminium molten liquid and the first refining agent is set successively by refining and stewing process, to remove solid slag, obtain refining intermediate production Object；
Coverture is added in the refining intermediate product surface, obtains first refinery molten aluminium.
9. preparation method according to claim 8, which is characterized in that the coverture is selected from NaCl, KCl, Na3AlF6、 NaCO3、BaCl2And CaF2One of group of composition is a variety of.
10. a kind of aluminium silicon scandium zirconium alloy wire, which is characterized in that the aluminium silicon scandium zirconium alloy wire is using any in claim 1 to 9 Preparation method described in is made.
11. application of the aluminium silicon scandium zirconium alloy wire described in any one of claim 10 in welding field.
CN201910593175.0A 2019-07-03 2019-07-03 Aluminium silicon scandium zirconium alloy wire, preparation method and application Pending CN110257653A (en)

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CN104651683A (en) * 2015-03-18 2015-05-27 中南大学 Aluminum alloy subjected to composite microalloying of Sc and Zr and preparation method thereof
JP2016108617A (en) * 2014-12-05 2016-06-20 古河電気工業株式会社 Aluminum alloy wire rod, aluminum alloy twisted wire, covered wire, wire harness, and method for producing aluminum alloy wire rod and aluminum alloy twisted wire
CN105916628A (en) * 2014-01-22 2016-08-31 伊利诺斯工具制品有限公司 Aluminium alloy welding consumable and method for metallurgical bonding
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

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CN105916628A (en) * 2014-01-22 2016-08-31 伊利诺斯工具制品有限公司 Aluminium alloy welding consumable and method for metallurgical bonding
JP2016108617A (en) * 2014-12-05 2016-06-20 古河電気工業株式会社 Aluminum alloy wire rod, aluminum alloy twisted wire, covered wire, wire harness, and method for producing aluminum alloy wire rod and aluminum alloy twisted wire
CN104651683A (en) * 2015-03-18 2015-05-27 中南大学 Aluminum alloy subjected to composite microalloying of Sc and Zr and preparation method thereof
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112458312A (en) * 2020-11-25 2021-03-09 中国恩菲工程技术有限公司 Refining agent for smelting aluminum or aluminum alloy and application thereof

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Application publication date: 20190920