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 PDF

Info

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
Authority
CN
China
Prior art keywords
aluminum alloy
strength aluminum
alloy
homogenization
ingot
Prior art date
Application number
CN201910413549.6A
Other languages
Chinese (zh)
Inventor
浦俭英
Original Assignee
亚太轻合金(南通)科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 亚太轻合金(南通)科技有限公司 filed Critical 亚太轻合金(南通)科技有限公司
Priority to CN201910413549.6A priority Critical patent/CN110055445A/en
Publication of CN110055445A publication Critical patent/CN110055445A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/14Alloys based on aluminium with copper as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/16Alloys based on aluminium with copper as the next major constituent with magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/18Alloys based on aluminium with copper as the next major constituent with zinc
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/057Changing 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

A kind of high-strength aluminum alloy and preparation method thereof
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.
CN201910413549.6A 2019-05-17 2019-05-17 A kind of high-strength aluminum alloy and preparation method thereof CN110055445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910413549.6A CN110055445A (en) 2019-05-17 2019-05-17 A kind of high-strength aluminum alloy and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910413549.6A CN110055445A (en) 2019-05-17 2019-05-17 A kind of high-strength aluminum alloy and preparation method thereof

Publications (1)

Publication Number Publication Date
CN110055445A true CN110055445A (en) 2019-07-26

Family

ID=67323504

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910413549.6A CN110055445A (en) 2019-05-17 2019-05-17 A kind of high-strength aluminum alloy and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110055445A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110578106A (en) * 2019-10-24 2019-12-17 亚太轻合金(南通)科技有限公司 Grading homogenization method for wrought aluminum and aluminum alloy

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101896631A (en) * 2007-11-15 2010-11-24 阿勒里斯铝业科布伦茨有限公司 Al-Mg-Zn wrought alloy product and manufacture method thereof
CN103710591A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method for aluminum alloy profile with excellent welding performance
US20140376352A1 (en) * 2013-06-24 2014-12-25 Seagate Technology Llc Materials for near field transducers, near field tranducers containing same, and methods of forming
CN107406925A (en) * 2015-10-30 2017-11-28 诺维尔里斯公司 High intensity 7XXX aluminium alloys and its preparation method
CN107805747A (en) * 2017-09-29 2018-03-16 宁波优适捷传动件有限公司 A kind of automobile swing arm and preparation method thereof
JP2018043290A (en) * 2016-09-13 2018-03-22 新日鐵住金株式会社 Weld joint
CN107828980A (en) * 2017-09-29 2018-03-23 宁波优适捷传动件有限公司 A kind of lightweight automobile using pull bar ball joint assembly and preparation method thereof
CN108097880A (en) * 2017-12-26 2018-06-01 苏州浩焱精密模具有限公司 A kind for the treatment of process of motor turning frame mould
CN108588502A (en) * 2018-05-31 2018-09-28 江苏恒加机械工程有限公司 A kind of preparation method of aluminium alloy extrusions

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101896631A (en) * 2007-11-15 2010-11-24 阿勒里斯铝业科布伦茨有限公司 Al-Mg-Zn wrought alloy product and manufacture method thereof
US20140376352A1 (en) * 2013-06-24 2014-12-25 Seagate Technology Llc Materials for near field transducers, near field tranducers containing same, and methods of forming
CN103710591A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method for aluminum alloy profile with excellent welding performance
CN107406925A (en) * 2015-10-30 2017-11-28 诺维尔里斯公司 High intensity 7XXX aluminium alloys and its preparation method
JP2018043290A (en) * 2016-09-13 2018-03-22 新日鐵住金株式会社 Weld joint
CN107805747A (en) * 2017-09-29 2018-03-16 宁波优适捷传动件有限公司 A kind of automobile swing arm and preparation method thereof
CN107828980A (en) * 2017-09-29 2018-03-23 宁波优适捷传动件有限公司 A kind of lightweight automobile using pull bar ball joint assembly and preparation method thereof
CN108097880A (en) * 2017-12-26 2018-06-01 苏州浩焱精密模具有限公司 A kind for the treatment of process of motor turning frame mould
CN108588502A (en) * 2018-05-31 2018-09-28 江苏恒加机械工程有限公司 A kind of preparation method of aluminium alloy extrusions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110578106A (en) * 2019-10-24 2019-12-17 亚太轻合金(南通)科技有限公司 Grading homogenization method for wrought aluminum and aluminum alloy

Similar Documents

Publication Publication Date Title
CN104745903B (en) A kind of 480MPa grades of aluminium alloy oil pipe aluminium alloy and its tubing manufacture method
CN102978449B (en) Al-Fe-Sb-RE aluminum alloy, and preparation method and power cable thereof
CN102978452B (en) Al-Fe-Sn-RE aluminium alloy and preparation method thereof and power cable
CN101974709B (en) Super-soft aluminum alloy conductor and preparation method thereof
US5462712A (en) High strength Al-Cu-Li-Zn-Mg alloys
Mandal et al. Ageing behaviour of A356 alloy reinforced with in-situ formed TiB2 particles
CN104561690B (en) High-plasticity cast aluminum alloy and extrusion casting preparation method thereof
CN101525709B (en) High-elongation aluminum alloy material and preparation method thereof
US4144102A (en) Production of low expansion superalloy products
US7048815B2 (en) Method of making a high strength aluminum alloy composition
CN106521243A (en) Ni-Cr-Mo-Nb-Al-Ti series high temperature alloy material, and preparation method and application thereof
CN104745902B (en) High strength Al-Mg-Si-Cu alloy for bicycles and processing technology thereof
JP2016514209A (en) Heat-treatable aluminum alloy containing magnesium and zinc and method for producing the same
CN105088033A (en) Aluminium alloy and preparation method thereof
US4772342A (en) Wrought Al/Cu/Mg-type aluminum alloy of high strength in the temperature range between 0 and 250 degrees C.
CN107805745B (en) A kind of high-strength weathering aluminum alloy conductor rail profile and preparation method thereof
CN108441705B (en) High-strength nickel-based wrought superalloy and preparation method thereof
US4636357A (en) Aluminum alloys
CN102796976B (en) Staged homogenization heat treatment method for improving microstructure and performances of Zr-containing 7xxx aluminum alloy
CN101935788B (en) Aluminum-magnesium-silicon series aluminum alloy material with middle and high intensity
CN103103387A (en) Al-Fe-C-RE aluminium alloy, preparation method thereof and power cable
CN103911530B (en) A kind of automatic catch variator high performance aluminium materials and preparation method thereof
CN104532056B (en) A kind of high-temperature titanium alloy and preparation method thereof
CN104975211B (en) Strength aluminum alloy conductive monofilament in a kind of high conductivity heat treatment type
CA2738973A1 (en) Magnesium alloys containing rare earths

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination