CN110055445A - A kind of high-strength aluminum alloy and preparation method thereof - Google Patents
A kind of high-strength aluminum alloy and preparation method thereof Download PDFInfo
- Publication number
- CN110055445A CN110055445A CN201910413549.6A CN201910413549A CN110055445A CN 110055445 A CN110055445 A CN 110055445A CN 201910413549 A CN201910413549 A CN 201910413549A CN 110055445 A CN110055445 A CN 110055445A
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- CN
- China
- Prior art keywords
- aluminum alloy
- strength aluminum
- alloy
- homogenization
- ingot
- Prior art date
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 134
- 238000002360 preparation method Methods 0.000 title claims description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 26
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 26
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 24
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 18
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 16
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 16
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 15
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 15
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 15
- 238000000265 homogenisation Methods 0.000 claims description 60
- 229910045601 alloys Inorganic materials 0.000 claims description 52
- 239000000956 alloys Substances 0.000 claims description 52
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 52
- 238000005266 casting Methods 0.000 claims description 48
- 239000002994 raw materials Substances 0.000 claims description 34
- 239000010949 copper Substances 0.000 claims description 33
- 239000011701 zinc Substances 0.000 claims description 27
- 239000010936 titanium Substances 0.000 claims description 25
- 238000003723 Smelting Methods 0.000 claims description 24
- 238000007670 refining Methods 0.000 claims description 24
- 239000011265 semifinished products Substances 0.000 claims description 23
- 239000011651 chromium Substances 0.000 claims description 18
- 239000000203 mixtures Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 238000005516 engineering processes Methods 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound data:image/svg+xml;base64,<?xml version='1.0' encoding='iso-8859-1'?>
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- 229910052804 chromium Inorganic materials 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nODVweCcgaGVpZ2h0PSc4NXB4JyB2aWV3Qm94PScwIDAgODUgODUnPgo8IS0tIEVORCBPRiBIRUFERVIgLS0+CjxyZWN0IHN0eWxlPSdvcGFjaXR5OjEuMDtmaWxsOiNGRkZGRkY7c3Ryb2tlOm5vbmUnIHdpZHRoPSc4NScgaGVpZ2h0PSc4NScgeD0nMCcgeT0nMCc+IDwvcmVjdD4KPHRleHQgeD0nMzUuMDQ1NScgeT0nNTMuNTkwOScgY2xhc3M9J2F0b20tMCcgc3R5bGU9J2ZvbnQtc2l6ZToyM3B4O2ZvbnQtc3R5bGU6bm9ybWFsO2ZvbnQtd2VpZ2h0Om5vcm1hbDtmaWxsLW9wYWNpdHk6MTtzdHJva2U6bm9uZTtmb250LWZhbWlseTpzYW5zLXNlcmlmO3RleHQtYW5jaG9yOnN0YXJ0O2ZpbGw6IzNCNDE0MycgPkM8L3RleHQ+Cjx0ZXh0IHg9JzUxLjA0MDknIHk9JzUzLjU5MDknIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6MjNweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID51PC90ZXh0Pgo8L3N2Zz4K [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
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- 239000000047 products Substances 0.000 claims description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound 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- 238000006356 dehydrogenation reaction Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000000295 complement Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making alloys
- C22C1/02—Making 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 alloys
- C22C1/02—Making alloys by melting
- C22C1/03—Making 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
- 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
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- 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
- C22F1/057—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 copper as the next major constituent
Abstract
The invention discloses a kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy is Zn, Mg, Cu, Fe, Ti, Si and Ho, and in parts by weight, high-strength aluminum alloy includes following components: 0.1~1 part of Zn；3~5 parts of Mg；4~7 parts of Cu；0.2~0.4 part of Fe；0.01~0.1 part of Ti；0.3~0.5 part of Si；0.05~0.5 part of Ho；60~80 parts of Al.High-strength aluminum alloy of the invention effectively improves the mechanics and welding performance of high-strength aluminum alloy, makes it have excellent tensile strength, yield strength and welding performance by Ho, Y, Er, Dy, Tb and Zr that addition compound into aluminium alloy is micro.
Description
Technical field
The present invention relates to a kind of field of alloy preparation technology, in particular to a kind of high-strength aluminum alloy and its preparation
Method.
Background technique
The features such as high strength alumin ium alloy has intensity high, and plasticity is good, and solderability is good and fine corrosion resistance, is answered extensively
It is many dual-use at present for the various structural members and the high high stress welding structural element of other intensity requirements of aircraft
Indispensable important feature material in aircraft, transport facility.As the development of space flight and aviation technology is to the day of material requirements
Benefit improves, and researcher is just putting forth effort that mining inetesity is higher, the high-strength weldable aluminum alloy of high comprehensive performance, at present to improve weldering
The comprehensive performance of the high strength alumin ium alloy connect is reduced and is fought since intensity improves mainly while pursuing material high intensity
Stress corrosion performance, fracture toughness and fatigue strength etc. cause adverse effect.
Requirement with every profession and trade to high strength alumin ium alloy increasingly improves, and propose top load, lighting, high-strength, high-ductility,
A series of requirements such as high-modulus, good corrosion resisting property and welding performance, but high-intensitive, height is being pursued in current research simply
But the welding performance for improving material is ignored when toughness aluminium alloy, so that existing high-strength aluminum alloy or intensity are high and weld
Performance difference or good welding performance but intensity is low, cause to be partial to size in the size selection of part aluminium alloy structure part thicker
And the preferable material of welding performance.Part size is thicker mainly by two aspect reasons: being on the one hand not achieved since intensity is low
Intensity is needed, therefore solves the problems, such as required top load by thickness；On the other hand existing aluminium alloy is all to pursue mostly
High-intensity and high-tenacity, and few attention welding performances on the basis of intensity, therefore in terms of high-strength aluminum alloy welding
Deficiency, so as to be biased to intensity in the choice low and have the material of preferable welding performance for the structural member of aluminium alloy, to can make
At part size thicker lead to not meet aluminum alloy junction component top load and lighting requirement.
Therefore, at present there is an urgent need to occur a kind of Novel light high-strength high-strength aluminum alloy with excellent welding performance into
Row updates.
Summary of the invention
In view of the above shortcomings, it is an object of the invention to develop a high-strength aluminum alloy, with excellent power
Learn performance and welding performance.
Technical solution of the present invention is summarized as follows:
A kind of high-strength aluminum alloy, wherein the main component of the high-strength aluminum alloy be Zn, Mg, Cu, Fe, Ti, Si and
Ho, and in parts by weight, the high-strength aluminum alloy includes following components:
Preferably, the high-strength aluminum alloy, wherein further include 0.1~1 part of Mn.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Cr.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Y.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Er.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Dy.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Tb.
Preferably, the high-strength aluminum alloy, wherein further include 0.01~0.03 part of Zr.
Preferably, the high-strength aluminum alloy, wherein further include 0.02~0.04 part of Mo.
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 755~770 DEG C of smelting temperature, are stirred in fusion process using electromagnetism
It mixes device to be sufficiently stirred, each intermediate alloy for then putting into Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo is former
Material, adjustment temperature are 760~780 DEG C, until completely melted sampling analysis chemical component, see whether meet Composition Control requirement,
Composition Control is carried out if necessary to adjust to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720~740 DEG C using semi-continuous casting method, casting speed is
50mm/min~70mm/min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 320 DEG C~350 DEG C, the time
For 4~6h；It is 12~18h that the temperature of second level homogenization, which is 470 DEG C~490 DEG C homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
The beneficial effects of the present invention are:
(1) high-strength aluminum alloy of the invention, by micro Ho, Y, Er, Dy, Tb of compound addition into aluminium alloy and
Zr effectively improves the mechanics and welding performance of high-strength aluminum alloy, make it have excellent tensile strength, yield strength and
Welding performance.
(2) high-strength aluminum alloy of the invention, Al are the alloy substrate of aluminium alloy；Zn can increase substantially the corrosion resistant of alloy
Corrosion, and improve its mechanical performance and creep-resistant property；On the one hand influence of the Cu to alloy improves alloy corrosion resistance, a side
Face increases resistance alloys rate, improves the anti-electric shock ability of aluminium alloy；The flexible and its ductility of Fe raising alloy；Pass through addition
The crystal grain refinement that Ti can be enabled aluminum alloy to improves harden ability and thermostrength, keeps enough intensity and creep resistant energy at high temperature
Power；The addition of rare earth element Ho can improve its thermal-shock resistance；Addition Si element can be reduced since addition Cu element causes alloy
Hot cracking tendency in welding process, hence it is evident that improve the intensity and welding performance of alloy；Mn causes alloy to weld Cu element
Hot cracking tendency in journey has improvement result；The hardness of aluminium alloy is improved by the way that chromium is added；By the way that Y, Er, Dy, Tb and Zr is added
To improve the tensile strength of aluminium alloy, heat-resisting shatter-proof and resistance to corrosion, while its electric conductivity can be improved again improves welding
Property, the electric conductivity without will affect high-strength aluminum alloy, to significantly improve the intensity and welding performance of aluminium alloy, and can
To play the role of certain purification dehydrogenation, improve the institutional framework of aluminium alloy, while Y and Al, Cu etc. form Dispersed precipitate
High melting compound also improves the thermal stability and heat resistance of high-strength aluminum alloy.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
This case proposes a kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy be Zn, Mg, Cu, Fe, Ti, Si and
Ho, and in parts by weight, the high-strength aluminum alloy includes following components:
Wherein Al is the alloy substrate of aluminium alloy；Zn can increase substantially the corrosion resistance of alloy, and improve its machinery
Performance, the intensity and hardness of zinc itself is not high, but after addition aluminium, copper alloying element, intensity and hardness are greatly improved, and resist
Croop property is also significantly enhanced；On the one hand influence of the Cu to alloy improves alloy corrosion resistance, on the one hand make alloy electric
Resistance rate increases, and improves the anti-electric shock ability of aluminium alloy；The flexible and its ductility of Fe raising alloy；It can be enabled aluminum alloy to by the way that Ti is added
Crystal grain refinement, improve harden ability and thermostrength, keep enough intensity and creep resisting ability at high temperature；Rare earth element Ho
Addition can improve its thermal-shock resistance.Si has strong metamorphism, can refine the crystal grain of weld seam fusion zone, is formed very big
Lattice strain effectively prevents the movement of dislocation and growing up for crystal grain, inhibits recrystallization, and then significantly reduces weld crack tendency
Property.Addition Si element can reduce the hot cracking tendency caused in alloy welding process due to addition Cu element, hence it is evident that improve alloy
Intensity and welding performance.Selection Si and Mg is added in aluminium alloy simultaneously, is to have complementary effect because of Zr and Sc,
So that institutional framework is more uniform, and then its intensity and welding performance are promoted to a certain extent.
As the another embodiment of this case, wherein further include 0.1~1 part of Mn.Mn causes alloy welding process to Cu element
In hot cracking tendency have improvement result.But Mn constituent content height makes alloy have hot cracking tendency, influences appearance, thus,
The additive amount of strict control Mn element in aluminium alloy of the present invention makes content be strict controlled in 0.1~1 part of range to reduce the present invention
The hot cracking tendency of alloy.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Cr.Aluminium alloy is improved by the way that chromium is added
Hardness.Cr constituent content height reduces alloy rigidity, thus, the additive amount of strict control Cr element in aluminium alloy of the present invention makes
Content is strict controlled in 0.02~0.04 part of range to reduce the hot cracking tendency of alloy of the present invention.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Y.By the way that Y, Er, Dy, Tb and Zr is added
To improve the tensile strength of aluminium alloy, heat-resisting shatter-proof and resistance to corrosion, while its electric conductivity can be improved again improves welding
Property, the electric conductivity without will affect high-strength aluminum alloy, to significantly improve the intensity and welding performance of aluminium alloy, and can
To play the role of certain purification dehydrogenation, improve the institutional framework of aluminium alloy.Y and Al, Cu etc. form Dispersed precipitate simultaneously
High melting compound also improves the thermal stability and heat resistance of high-strength aluminum alloy.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Er.Er constituent content height keeps alloy heat-resisting
Earthquake-proof function weakens, thus, the additive amount of strict control Er element in aluminium alloy of the present invention.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Dy.Dy constituent content will affect aluminium alloy
Electric conductivity, too high levels, so that electric conductivity weakens, therefore the additive amount of strict control Dy element makes in aluminium alloy of the present invention
Alloy keeps higher electric conductivity.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Tb.Tb constituent content will affect aluminium alloy
Welding performance, too high levels, so that welding performance weakens, therefore the additive amount of strict control Tb element makes in aluminium alloy of the present invention
Alloy keeps higher welding performance.
As the another embodiment of this case, wherein further include 0.01~0.03 part of Zr.Zr constituent content will affect aluminium alloy
Corrosion resistance, too high levels so that corrosion resistance weaken, anodized rear surface turn to be yellow, influence outside surface
It sees, therefore the additive amount of strict control Zr element makes alloy keep higher corrosion resistance in aluminium alloy of the present invention.
As the another embodiment of this case, wherein further include 0.02~0.04 part of Mo.Mo good, hardness with elevated temperature strength
Height, density is big, resistance to corrosion is strong, thermal expansion coefficient is small, good conductive and thermal conduction characteristic, passes through and Mo raising aluminium alloy is added
High temperature resistance, improve harden ability and thermostrength, keep enough intensity and creep resisting ability at high temperature.Content mistake
Height influences intensity, therefore the additive amount of strict control Mo element keeps alloy in aluminium alloy of the present invention so that thermostrength weakens
Higher thermostrength.
Wherein, the tensile strength of high-strength aluminum alloy is 650~700MPa, 720~750MPa of yield strength, and elongation percentage is
10.5%~12.5%, welding coefficient is 0.70~0.80.
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 755~770 DEG C of smelting temperature, are stirred in fusion process using electromagnetism
It mixes device to be sufficiently stirred, each intermediate alloy for then putting into Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo is former
Material, adjustment temperature are 760~780 DEG C, until completely melted sampling analysis chemical component, see whether meet Composition Control requirement,
Composition Control is carried out if necessary to adjust to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720~740 DEG C using semi-continuous casting method, casting speed is
50mm/min~70mm/min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 320 DEG C~350 DEG C, the time
For 4~6h；It is 12~18h that the temperature of second level homogenization, which is 470 DEG C~490 DEG C homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Specific embodiment and comparative example is listed below:
Embodiment 1:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 755 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo, adjusts
Whole temperature is 760 DEG C, sampling analysis chemical component until completely melted, sees whether meet Composition Control requirement, if necessary into
Row Composition Control adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720 DEG C using semi-continuous casting method, casting speed 50mm/
Min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 320 DEG C DEG C, time 4h；
It is 12h that the temperature of second level homogenization, which is 470 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Embodiment 2:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 760 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo, adjusts
Whole temperature is 770 DEG C, sampling analysis chemical component until completely melted, sees whether meet Composition Control requirement, if necessary into
Row Composition Control adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 730 DEG C using semi-continuous casting method, casting speed 60mm/
Min, cooling water intensity are 0.11MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 330 DEG C, time 5h；The
It is 16h that the temperature of second level homogenization, which is 480 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Embodiment 3:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, the high-strength aluminum alloy includes following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 770 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo, adjusts
Whole temperature is 780 DEG C, sampling analysis chemical component until completely melted, sees whether meet Composition Control requirement, if necessary into
Row Composition Control adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 740 DEG C using semi-continuous casting method, casting speed 70mm/
Min, cooling water intensity are 0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 350 DEG C, time 6h；The
It is 18h that the temperature of second level homogenization, which is 490 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 1:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 755 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo, adjustment temperature
Degree is 760 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720 DEG C using semi-continuous casting method, casting speed 50mm/
Min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 320 DEG C DEG C, time 4h；
It is 12h that the temperature of second level homogenization, which is 470 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 2:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 755 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Mn, Cr, Y, Er, Dy, Tb, Zr and Mo, adjustment temperature
Degree is 760 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720 DEG C using semi-continuous casting method, casting speed 50mm/
Min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 320 DEG C DEG C, time 4h；
It is 12h that the temperature of second level homogenization, which is 470 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 3:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 760 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Y, Er, Dy, Tb, Zr and Mo, adjustment temperature
Degree is 770 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 730 DEG C using semi-continuous casting method, casting speed 60mm/
Min, cooling water intensity are 0.11MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 330 DEG C, time 5h；The
It is 16h that the temperature of second level homogenization, which is 480 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 4:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, high-strength aluminum alloy include following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 760 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Tb, Zr and Mo, adjustment temperature
Degree is 770 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 730 DEG C using semi-continuous casting method, casting speed 60mm/
Min, cooling water intensity are 0.11MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 330 DEG C, time 5h；The
It is 16h that the temperature of second level homogenization, which is 480 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 5:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, the high-strength aluminum alloy includes following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 770 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Zr and Mo, adjustment temperature
Degree is 780 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 740 DEG C using semi-continuous casting method, casting speed 70mm/
Min, cooling water intensity are 0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 350 DEG C, time 6h；The
It is 18h that the temperature of second level homogenization, which is 490 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
Comparative example 6:
A kind of high-strength aluminum alloy, the main component of high-strength aluminum alloy are Zn, Mg, Cu, Fe, Ti, Si and Ho, and according to
Parts by weight meter, the high-strength aluminum alloy includes following components:
A kind of preparation method of high-strength aluminum alloy, wherein preparation method includes the following steps: 1) to weigh raw material, will be pure
Aluminium ingot, pure zinc ingot, fine copper ingot investment smelting furnace carry out melting, 770 DEG C of smelting temperature, in fusion process using magnetic stirrer into
Row is sufficiently stirred, and then puts into each intermediate alloy raw material of Mg, Fe, Ti, Si, Ho, Mn, Cr, Y, Er, Dy, Tb, Zr, adjustment temperature
Degree is 780 DEG C, until completely melted sampling analysis chemical component, sees whether meet Composition Control requirement, carries out into if necessary
Sub-control system adjusts to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 740 DEG C using semi-continuous casting method, casting speed 70mm/
Min, cooling water intensity are 0.14MPa, obtain ingot casting；
4) two-step homogenization processing is carried out to the ingot casting, the temperature of first order homogenization is 350 DEG C, time 6h；The
It is 18h that the temperature of second level homogenization, which is 490 DEG C of homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, is processed into designated shape
Semi-finished product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
The performance test results of embodiment and comparative example are listed below:
It can be seen that by examples detailed above, the material obtained not only has excellent tensile strength, and has good waterproof
Performance.
As can be seen from the above table, there is excellent tension using the high-strength aluminum alloy of technical solution of the present invention preparation
Intensity and yield strength, welding performance are also greatly improved.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (10)
1. a kind of high-strength aluminum alloy, which is characterized in that the main component of the high-strength aluminum alloy be Zn, Mg, Cu, Fe, Ti,
Si and Ho, and in parts by weight, the high-strength aluminum alloy includes following components:
2. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.1~1 part of Mn.
3. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Cr.
4. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Y.
5. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Er.
6. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Dy.
7. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Tb.
8. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.01~0.03 part of Zr.
9. high-strength aluminum alloy according to claim 1, which is characterized in that further include 0.02~0.04 part of Mo.
10. the preparation method of described in any item high-strength aluminum alloys according to claim 1~9, which is characterized in that the preparation
Method includes the following steps: 1) to weigh raw material, by fine aluminium ingot, pure zinc ingot, the investment smelting furnace progress melting of fine copper ingot, smelting temperature
755~770 DEG C, be sufficiently stirred in fusion process using magnetic stirrer, then put into Mg, Fe, Ti, Si, Ho, Mn, Cr,
Y, each intermediate alloy raw material of Er, Dy, Tb, Zr and Mo, adjustment temperature are 760~780 DEG C, until completely melted sampling analysis
It studies point, sees whether meet Composition Control requirement, carry out Composition Control if necessary and adjust to obtain aluminium alloy melt；
2) refining agent is added to refine melt, to eliminate gas in melt, oxidation film and field trash；
3) it by after raw material refining, is poured at 720~740 DEG C using semi-continuous casting method, casting speed 50mm/
Min~70mm/min, cooling water intensity are 0.08MPa~0.14MPa, obtain ingot casting；
4) to the ingot casting carry out two-step homogenization processing, the first order homogenization temperature be 320 DEG C~350 DEG C, the time be 4~
6h；It is 12~18h that the temperature of second level homogenization, which is 470 DEG C~490 DEG C homogenization times,；
5) hot extrusion, hot rolling or forging technology are carried out to by the ingot casting of Homogenization Treatments, be processed into the half of designated shape at
Product；
6) semi-finished product are quenched, aging strengthening model, to obtain above-mentioned alloy product.
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