CN110257654A - Al-mg-si scandium zirconium alloy wire, preparation method and application - Google Patents
Al-mg-si scandium zirconium alloy wire, preparation method and application Download PDFInfo
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- CN110257654A CN110257654A CN201910593176.5A CN201910593176A CN110257654A CN 110257654 A CN110257654 A CN 110257654A CN 201910593176 A CN201910593176 A CN 201910593176A CN 110257654 A CN110257654 A CN 110257654A
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- aluminium
- scandium
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- zirconium
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- 229910001093 Zr alloy Inorganic materials 0.000 title claims abstract description 52
- MUKNRCIFSDRESU-UHFFFAOYSA-N [Zr].[Sc] Chemical compound [Zr].[Sc] MUKNRCIFSDRESU-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 82
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000004411 aluminium Substances 0.000 claims abstract description 61
- 238000007670 refining Methods 0.000 claims abstract description 56
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 49
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 24
- 239000013078 crystal Substances 0.000 claims abstract description 21
- 238000000137 annealing Methods 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 7
- 238000007872 degassing Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 46
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 39
- 239000000956 alloy Substances 0.000 claims description 37
- 229910045601 alloy Inorganic materials 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 25
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 21
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 18
- 239000011777 magnesium Substances 0.000 claims description 16
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 13
- -1 aluminium silicon magnesium Chemical compound 0.000 claims description 12
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- DNXNYEBMOSARMM-UHFFFAOYSA-N alumane;zirconium Chemical compound [AlH3].[Zr] DNXNYEBMOSARMM-UHFFFAOYSA-N 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 9
- 239000004848 polyfunctional curative Substances 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 8
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 229910001626 barium chloride Inorganic materials 0.000 claims description 5
- 239000013067 intermediate product Substances 0.000 claims description 5
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 4
- 229910001051 Magnalium Inorganic materials 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 229910001610 cryolite Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 34
- 239000012535 impurity Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 229910000542 Sc alloy Inorganic materials 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 238000009866 aluminium metallurgy Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000000274 aluminium melt Substances 0.000 description 2
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 description 1
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The present invention provides a kind of al-mg-si scandium zirconium alloy wire, preparation method and applications.The preparation method includes: to melt aluminium ingot, obtain aluminium molten liquid, and it is handled through the first refining treatment, the second refining treatment and crystal grain refinement, so that the second refinery molten aluminium includes Mg element 4.5~6%, Si element 0.2~0.5%, Fe element 0.15~0.4%, Cu element 0.05~0.15%, Ti element 0.1~0.2%, Mn element 0.05~0.2%, Sc element 0.05~0.2%, Zr element 0.05~0.6%, surplus is Al element；Then online degasification, slagging-off, casting, rolling, annealing, drawing and annealing are successively carried out, al-mg-si scandium zirconium alloy wire is obtained.Above-mentioned al-mg-si scandium zirconium alloy wire has the advantages that preparation cost is low, tensile strength is high and elongation is high.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, in particular to a kind of al-mg-si scandium zirconium alloy wire, preparation method
And application.
Background technique
The aluminum alloy bodywork of bullet train is the welding structural element using the wide thin-wall aluminum alloy profile of Large Flat as skeleton, weldering
Connect can reduce 40% vehicle manufacture work amount, to reduce vehicle manufacture cost.Developing high-performance aluminum profile adapted welding wire is
The guarantee of aluminum profile welding.Currently, rail traffic relies primarily on import with high-performance aluminum mg-si master alloy welding wire, therefore, exploitation is new
Type aldray welding wire preparation process, is continuously improved the quality of domestic aluminium welding wire, becomes current aluminum profile adapted welding wire research and development
Major tasks.
In the aluminium alloy welding wire of import at present, the preferable ER5356 welding wire of versatility is designed for 5xxx series alloy,
The universal packing material that uses under the conditions of being no more than the tensile strength of 276MPa has good color after anodization
Proportion property.Aldray welding wire is designed for 6xxx system wrought aluminium alloy, is had preferable thermal deformation behavior, can be heat-treated
Strengthen, there is certain tensile strength and elongation after fracture.The Al-Mg-Si alloy of domestic existing wrought aluminium alloy trade mark production
The problem of that there are properties of product is unstable for welding wire, and tensile strength and elongation after fracture cannot fully meet requirement.
Existing literature (Authorization Notice No. CN106048272) provides a kind of preparation method of al-mg-si scandium alloy silk, should
Preparation method includes by the way that silicea, scandium agent, magnesia mixture, then refined, standing, the processing of online crystal grain refinement, burning are added into molten aluminum
The processes such as casting, rolling, drawing, the final diameter that obtains is 0.15~0.4mm aluminum-alloy wire, and alloy wire was needed by 6~15 hours
Artificial aging.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 al-mg-si scandium zirconium alloy wire, preparation method and applications, to solve
The better performances of existing aluminium silicon scandium alloy, but the problem of higher cost.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of system of al-mg-si scandium zirconium alloy wire
Preparation 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 first
Refining treatment obtains the first refinery molten aluminium；First refinery molten aluminium and magnesia mixture, silicea, scandium agent, zirconium agent and the second refining agent are carried out
Second refining treatment 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
Including Mg element 4.5~6%, Si element 0.2~0.5%, Fe element 0.15~0.4%, Cu element 0.05~0.15%, Ti member
Plain 0.1~0.2%, Mn element 0.05~0.2%, Sc element 0.05~0.2%, Zr element 0.05~0.6%, surplus are Al member
Element；Make successively to carry out online degasification, slagging-off, casting, rolling, annealing, drawing by the molten aluminum that crystal grain refinement treatment process obtains
And annealing, obtain al-mg-si 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 al-mg-si
Scandium zirconium alloy wire semi-finished product carry out solution strengthening processing, obtain al-mg-si scandium zirconium alloy wire.
Further, the solid solubility temperature of solution strengthening processing is 455~520 DEG C, and solution time is 1~3h.
Further, in aluminium ingot aluminium element purity >=99.0wt%；Preferably, magnesia mixture is selected from magnesium ingot, magnalium centre is closed
One of group of gold and al-mg-si intermediate alloy composition is a variety of；Preferably, silicea be selected from aluminium silicon intermediate alloy, pure silicon ingot and
One of group of aluminium silicon magnesium intermediate alloy composition is a variety of；Preferably, scandium agent is scandium bearing master alloy；Preferably, zirconium agent is selected
One of group formed from aluminium zirconium hardener, pure zirconium and aluminium silicon zirconium intermediate alloy is 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、KCl、Na3AlF6、
CaF2、MgCl2、C、C2Cl6With 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 KCl, CaF2、MgCl2、BaCl2And MgF2One of group of composition is a variety of.
On the one hand the application provides a kind of al-mg-si scandium zirconium alloy wire, al-mg-si scandium zirconium alloy wire uses above-mentioned preparation side
Method is made.
The another aspect of the application additionally provides a kind of application of above-mentioned al-mg-si scandium zirconium alloy wire in welding field.
It applies the technical scheme of the present invention, in above-mentioned preparation method, scandium element is to the effective crystal grain refinement of aluminium alloy and again
Inhibiting effect is crystallized, alusil alloy matrix grain can be refined, improve its solderability；Zr element substitution part Sc element is introduced, it can
The production cost of aluminium silicon scandium alloy silk is effectively reduced.And in the second refinery molten aluminium under the synergistic effect of each component, so that the party
The aluminum-alloy wire even tissue that method is prepared, component segregation is small, and impurity content is few, and significantly improve aluminum-alloy wire tensile strength and
The comprehensive mechanical property of elongation etc..Simultaneously compared to scandium element, zr element has the advantages that cheap.Thus using above-mentioned
Al-mg-si scandium zirconium alloy wire, which is made, in method can not only reduce the preparation cost of al-mg-si scandium zirconium alloy wire, additionally it is possible to make it have
The comprehensive mechanical property of higher tensile strength 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
Solve above-mentioned technical problem, this application provides a kind of preparation method of al-mg-si scandium zirconium alloy wire, the preparation method include: 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 refined aluminum
Liquid；First refinery molten aluminium and magnesia mixture, silicea, scandium agent, zirconium agent and the second refining agent are subjected to the second refining treatment, obtain the second essence
Aluminium metallurgy liquid；Crystal grain refinement processing is carried out to the second refinery molten aluminium, so that the second refinery molten aluminium includes Mg element 4.5~6%, Si member
Plain 0.2~0.5%, Fe element 0.15~0.4%, Cu element 0.05~0.15%, Ti element 0.1~0.2%, Mn element 0.05
~0.2%, Sc element 0.05~0.2%, Zr element 0.05~0.6%, surplus are Al element；Make processed by crystal grain refinement
The molten aluminum that journey obtains successively carries out online degasification, slagging-off, casting, rolling, annealing, drawing and annealing, obtains al-mg-si scandium
Zirconium alloy wire.
In first refining process, the addition of the first refining agent can reduce the impurity content in aluminium molten liquid；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 aluminium to the effective crystal grain refinement of aluminium alloy and recrystallization inhibiting effect
Silicon 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 aluminum-alloy wire tissue that this method is prepared
Uniformly, component segregation is small, and impurity content is few, and the synthesis mechanical property for significantly improving aluminum-alloy wire tensile strength and elongation etc.
Energy.Simultaneously compared to scandium element, zr element has the advantages that cheap.Al-mg-si scandium zirconium thus is made using the above method to close
Spun gold can not only reduce the preparation cost of al-mg-si scandium zirconium alloy wire, additionally it is possible to make it have higher tensile strength and elongation
The comprehensive mechanical property of rate etc..
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).Weight ratio includes but is not limited to above range in Sc, Zr element, and being limited can further increase within the above range
By force；Two kinds of elements of scandium zirconium are to the cooperative reinforcing effect of aluminium alloy, to further increase the comprehensive mechanical property of aluminum-alloy wire.More
Preferably, in crystal grain refinement treatment process, the weight ratio of Sc element and Zr element is 1:1,1:2 or 1:2.5.
In order to further increase the comprehensive mechanical property of al-mg-si scandium zirconium alloy wire, in a kind of preferred embodiment,
After carrying out annealing process, preparation method further includes that will make annealing treatment obtained al-mg-si scandium zirconium alloy wire semi-finished product to carry out
Solution strengthening processing, obtains al-mg-si scandium zirconium alloy wire.
In a kind of preferred embodiment, the solid solubility temperature of solution strengthening processing step is 455~520 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 al-mg-si scandium zirconium alloy wire.It is highly preferred that solution strengthening processing step
Solid solubility temperature is 455,480,500 DEG C or 520 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, magnesia mixture includes but is not limited to magnesium ingot, among magnalium
One of group or a variety of of alloy and al-mg-si intermediate alloy composition, wherein in magnesium ingot magnesium elements purity >=99.0wt%；
Preferably, silicea include but is not limited to aluminium silicon intermediate alloy, pure silicon ingot and aluminium silicon magnesium intermediate alloy composition one of group or
It is a variety of；Preferably, scandium agent includes but is not limited to scandium bearing master alloy；Preferably, zirconium agent include but is not limited to aluminium zirconium hardener,
One of group of pure zirconium and aluminium silicon zirconium intermediate alloy composition is a variety of.Al-mg-si scandium zirconium is advantageously reduced using above-mentioned raw materials to close
Impurity content in gold, and then promote al-mg-si scandium zircaloy comprehensive performance.It is highly preferred that in aluminium silicon intermediate alloy, element silicon
Content be 20~25wt%；In scandium bearing master alloy, the content of scandium element is 1.8~2.2wt%；In aluminium zirconium hardener,
The content of zr element is 4~5.5wt%.It is highly preferred that the content of element silicon is 20~25wt% in aluminium silicon intermediate alloy；Aluminium scandium
The content of scandium element is 1.8,2wt% or 2.2wt% in intermediate alloy；In the aluminium zirconium hardener, the content of zr element is
4wt%, 5wt% or 5.5wt%.
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、KCl、
Na3AlF6、CaF2、MgCl2、C、C2Cl6With one of the group of refractory brick powder composition or a variety of.Compared to other refining agents, adopt
Be conducive to further decrease the impurity content in al-mg-si scandium zircaloy with above-mentioned several refining agents, and then promote al-mg-si scandium zirconium
Alloy 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 KCl, CaF2、MgCl2、BaCl2And MgF2One of group of composition is a variety of.Preferably, intermediate to account for refining
The weight of product, the dosage of coverture are 0.1~0.5%.
In above-mentioned preparation method, above-mentioned preparation method includes that the molten aluminum obtained after crystal grain refinement is carried out to online degasification, is removed
Slag, casting, mill-annealed and drawing process can be carried out using method commonly used in the art.In a kind of preferred embodiment
In, the operation of rolling uses three-high mill, and the product after casting is rolled into the aluminium alloy rod of 9.5~9.6mm of diameter, then again will
The processing such as aluminium alloy rod is in short supply, drawing, obtain the aluminum-alloy wire of 1.6~3mm, are carrying out double annealing processing, most laggard
Row solution strengthening processing, obtains required product al-mg-si scandium zirconium alloy wire.Compared to other diameter ranges, using above-mentioned diameter
Aluminium alloy rod in range carries out the performance that drawing is conducive to improve al-mg-si 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 conjunction of aluminium silicon to the effective crystal grain refinement of aluminium alloy and recrystallization inhibiting effect
Golden matrix grain improves its solderability；Zr element substitution part Sc element is introduced, can effectively reduce the production of aluminium silicon scandium alloy silk
Cost.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,
Component segregation is small, and impurity content is few, and the comprehensive mechanical property for significantly improving aluminum-alloy wire tensile strength and elongation etc..
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 al-mg-si 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 (NaNO3、KCl、MgCl2, C weight ratio be 7:6:6:1, account for melt percentage composition be 0.3wt%) carry out first essence
Refining is handled, and is carried out processing of skimming after standing, is equably sprinkled appropriate coverture (KCl, CaF in aluminium melt surface later2、MgCl2、
MgF2Weight ratio is 7:10:68:15, accounts for the 0.2wt% of aluminum melt), dosage is advisable with covering bath surface, obtains the first refining
Molten aluminum；
(2) by designed alloying component be added in step (1) molten aluminum magnesia mixture (magnesium ingot, magnesium elements purity >=
99.9wt%), silicea (aluminium silicon intermediate alloy, silicon content 20wt%), scandium agent (scandium bearing master alloy, the amount 2wt% containing scandium), zirconium agent
(aluminium zirconium hardener, the amount 5wt% containing zirconium), stirring 15min to be uniformly mixed；
(3) with nitrogen by second refining agent (KCl, CaF2、MgCl2、BaCl2, C weight ratio be 38:5:7:44:6, account for the
The weight percentage of one refinery molten aluminium is 0.1%) to be blown into the first refinery molten aluminium to carry out the second refining treatment, obtains the second essence
Aluminium metallurgy liquid；
(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 mass percent in molten aluminum processed are as follows: Mg 4.53%, Si 0.45%, Fe 0.16%, Cu 0.1%, Ti
0.15%, Mn 0.05%, Sc 0.1%, Zr 0.2%, surplus Al；
(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 alloy rod of 9.5mm；
(7) above-mentioned aluminium alloy rod is annealed, drawing, it is final to obtain diameter 1.6mm aluminum-alloy wire, finally carry out finished product
Annealing, 300 DEG C of annealing temperature, anneal soaking time 1.5h；
(8) aluminum-alloy wire obtained by step (7) carries out solution treatment, and solid solubility temperature is 455 DEG C, solution time 2h.
The common al-mg-si scandium zircaloy list of al-mg-si scandium zirconium alloy wire prepared by the present embodiment and same process preparation
Silk thread 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 (%) | |
| Common al-mg-si scandium zirconium alloy wire | 448 | 6.9 |
| Al-mg-si scandium zirconium alloy wire of the present invention | 472 | 8.2 |
Embodiment 2
The preparation process of the al-mg-si 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 (NaNO3、KCl、MgCl2, C weight ratio be 7:6:6:1, account for melt percentage composition be 0.3wt%) carry out first essence
Refining is handled, and is carried out processing of skimming after standing, is equably sprinkled appropriate coverture (KCl, CaF in aluminium melt surface later2、MgCl2、
MgF2Weight ratio is 7:10:68:15, accounts for the 0.2wt% of aluminum melt), dosage is advisable with covering bath surface, obtains the first refining
Molten aluminum；
(2) by designed alloying component be added in step (1) molten aluminum magnesia mixture (magnesium ingot, magnesium elements purity >=
99.9wt%), silicea (aluminium silicon intermediate alloy, silicon content 20wt%), scandium agent (scandium bearing master alloy, the amount 2wt% containing scandium), zirconium agent
(aluminium zirconium hardener, the amount 5wt% containing zirconium), stirring 15min to be uniformly mixed；
(3) with nitrogen by second refining agent (KCl, CaF2、MgCl2、BaCl2, C weight ratio be 38:5:7:44:6, account for the
The weight percentage of one refinery molten aluminium is 0.1%) to be blown into the first refinery molten aluminium to carry out the second refining treatment, obtains the second essence
Aluminium metallurgy liquid；
(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 mass percent in molten aluminum processed are as follows: Mg 5.48%, Si 0.28%, Fe 0.15%, Cu 0.1%, Ti
0.15%, Mn 0.08%, Sc 0.2%, Zr 0.2%, surplus Al；
(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 alloy rod of 9.5mm；
(7) above-mentioned aluminium alloy rod is annealed, drawing, it is final to obtain diameter 1.6mm aluminum-alloy wire, finally carry out finished product
Annealing, 300 DEG C of annealing temperature, anneal soaking time 1.5h；
(8) aluminum-alloy wire obtained by step (7) carries out solution treatment, and solid solubility temperature is 455 DEG C, solution time 2h.
The common al-mg-si scandium zircaloy list of al-mg-si scandium zirconium alloy wire prepared by the present embodiment and same process preparation
Silk thread performance comparison such as table 2.
Table 2
| Tensile strength (MPa) | Elongation (%) | |
| Common al-mg-si scandium zirconium alloy wire | 457 | 7.1 |
| Al-mg-si scandium zirconium alloy wire of the present invention | 481 | 9.4 |
Embodiment 3
With the difference of embodiment 1 are as follows:
After crystal grain refinement processing, the second refinery molten aluminium includes Mg 4.53%, Si 0.45%, Fe 0.16%, Cu
0.1%, Ti 0.15%, Mn 0.05%, Sc 0.1%, Zr 0.4%, surplus Al.
Performance test methods are with embodiment 1, and al-mg-si scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tension is strong
Degree is 459MPa, elongation 7.2%.
Embodiment 4
With the difference of embodiment 1 are as follows:
The solid solubility temperature of solution strengthening processing is 400 DEG C, solution time 4h.
Performance test methods are with embodiment 1, and al-mg-si scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tension is strong
Degree is 451MPa, elongation 6.7%
Comparative example 1
After crystal grain refinement processing, the second refinery molten aluminium includes Mg element 3%, Si element 0.1%, Fe element 0.5%, Cu member
Plain 0.2%, Ti element 0.05%, Mn element 0.4%, Sc element 0.02%, Zr element 0.3%, surplus are Al element.
Performance test methods are with embodiment 1, and al-mg-si scandium zirconium alloy wire performance prepared by the present embodiment is as follows: tension is strong
Degree is 433MPa, elongation 6.5%.
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 this Shen for the amount of each element in al-mg-si scandium zirconium alloy wire
Be conducive to improve the comprehensive performance of al-mg-si scandium zirconium alloy wire in the range of please protecting.
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 al-mg-si 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 al-mg-si 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 al-mg-si 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 magnesia mixture, silicea, scandium agent, zirconium agent and the second refining agent are subjected to the second refining treatment, obtained
Second refinery molten aluminium；
To second refinery molten aluminium carry out crystal grain refinement processing so that second refinery molten aluminium include Mg element 4.5~
6%, Si element 0.2~0.5%, Fe element 0.15~0.4%, Cu element 0.05~0.15%, Ti element 0.1~0.2%, Mn
Element 0.05~0.2%, Sc element 0.05~0.2%, Zr element 0.05~0.6%, surplus are 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 al-mg-si 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 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 al-mg-si scandium zirconium alloy wire semi-finished product to carry out solution strengthening processing, obtains institute
State al-mg-si 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 is 455
~520 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 magnesia mixture is selected from one of group of magnesium ingot, magnalium intermediate alloy and al-mg-si intermediate alloy composition or more
Kind；
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 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、KCl、Na3AlF6、CaF2、MgCl2、C、C2Cl6With one of the group of refractory brick powder composition
Or it is 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 KCl, CaF2、MgCl2、
BaCl2And MgF2One of group of composition is a variety of.
10. a kind of al-mg-si scandium zirconium alloy wire, which is characterized in that the al-mg-si scandium zirconium alloy wire is using in claim 1 to 9
Described in any item preparation methods are made.
11. application of the al-mg-si scandium zirconium alloy wire described in any one of claim 10 in welding field.
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