CN109022972A - A kind of 2D12 extruding aluminium alloy of optimizing components and preparation method thereof - Google Patents
A kind of 2D12 extruding aluminium alloy of optimizing components and preparation method thereof Download PDFInfo
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- CN109022972A CN109022972A CN201811022845.5A CN201811022845A CN109022972A CN 109022972 A CN109022972 A CN 109022972A CN 201811022845 A CN201811022845 A CN 201811022845A CN 109022972 A CN109022972 A CN 109022972A
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- 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
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- 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
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- 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
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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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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 present invention provides a kind of 2D12 extruding aluminium alloy of optimizing components, ingredients are as follows: the Si of≤0.15wt%；The Fe of≤0.25wt%；The Cu of 4.3~4.9wt%；The Mn of 0.65~0.9wt%；The Mg of 1.3~1.8wt%；The Zn of≤0.1wt%；The Ti of≤0.1wt%；The Ni of≤0.05wt%；Surplus is Al.The 2D12 extruding aluminium alloy performance that the prior art provides is poor, the present invention is by being adjusted 2D12 extruding aluminium alloy Mn content, and Mn constituent content is controlled in the critical field of 2D12 aluminium alloy, content optimization is carried out to other alloying elements simultaneously, the mechanical property of 2D12 extruding aluminium alloy is greatly improved, while guaranteeing that the ingredient of aluminium alloy meets 2D12 standard requirements.The present invention also provides a kind of preparation methods of the 2D12 extruding aluminium alloy of optimizing components described in above-mentioned technical proposal.
Description
Technical field
The present invention relates to the 2D12 extruding aluminium alloys and its preparation of technical field of aluminum alloy technology more particularly to a kind of optimizing components
Method.
Background technique
2D12 aluminium alloy is Al-Cu-Mg alloy, is middle strength aluminium alloy, is equivalent to 2124 aluminium alloys in the U.S., is being flown
It is widely applied on machine.The standard analysis of 2D12 aluminium alloy are as follows: the Si of≤0.20wt%；The Fe of≤0.30wt%；3.8~
The Cu of 4.9wt%；The Mn of 0.3~0.9wt%；The Mg of 1.2~1.8wt%；The Zn of≤0.1wt%；The Ti of≤0.1wt%；≤
The Ni of 0.05wt%；Single miscellaneous content≤0.05wt%, total miscellaneous content≤0.10wt%；Surplus is Al.2D12 in the prior art
Often there is underproof phenomenon in its mechanical property of the extruded product of aluminium alloy, and tensile strength, yield strength are relatively low, it is difficult to full
Sufficient actual operation requirements.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of 2D12 extruding aluminium alloy of optimizing components and its preparation sides
Method, the 2D12 extruding aluminium alloy of optimizing components provided by the invention have good mechanical property.
The present invention provides a kind of 2D12 extruding aluminium alloy of optimizing components, ingredients are as follows:
The Si of≤0.15wt%；
The Fe of≤0.25wt%；
4.3 the Cu of~4.9wt%；
The Mn of 0.65~0.9wt%；
The Mg of 1.3~1.8wt%；
The Zn of≤0.1wt%；
The Ti of≤0.1wt%；
The Ni of≤0.05wt%；
Surplus is Al.
In the present invention, the mass content of the Si is preferably 0.01~0.12%, and more preferably 0.01~0.1%, most
Preferably 0.01~0.08%.
In the present invention, the mass content of the Fe is preferably 0.01~0.22%, and more preferably 0.01~0.2%, more
Preferably 0.01~0.18%, more preferably 0.01~0.15%, most preferably 0.01~0.10%.
In the present invention, the mass content of the Cu is preferably 4.4~4.7%, and more preferably 4.5~4.6%.
In the present invention, the mass content of the Mn is preferably 0.7~0.8%, and more preferably 0.72~0.78%, it is optimal
It is selected as 0.74~0.76%.
In the present invention, the mass content of the Mg is preferably 1.4~1.7%, and more preferably 1.5~1.6%.
In the present invention, the mass content of the Zn is preferably 0.01~0.09%, and more preferably 0.02~0.08%, more
Preferably 0.03~0.06%, most preferably 0.04~0.05%.
In the present invention, the mass content of the Ti is preferably 0.01~0.09%, and more preferably 0.02~0.08%, more
Preferably 0.03~0.06%, most preferably 0.04~0.05%.
In the present invention, the mass content of the Ni is preferably 0.01~0.04%, and more preferably 0.02~0.03%.
In the present invention, single impurity mass content in the 2D12 extruding aluminium alloy of the optimizing components preferably≤
0.05%, more preferably≤0.04%, most preferably≤0.03%.
In the present invention, in the 2D12 extruding aluminium alloy of the optimizing components total impurities add up to mass content preferably≤
0.1%, more preferably≤0.08%, most preferably≤0.06%.
The 2D12 extruding aluminium alloy performance of the prior art is poor, by the numerous studies of inventor, finds Mn content pair
The performance of 2D12 extruding aluminium alloy influences greatly, and the present invention is by being adjusted 2D12 extruding aluminium alloy Mn content, same to time control
Mn constituent content processed greatly improves the mechanical property of 2D12 extruding aluminium alloy, together in the critical field of 2D12 aluminium alloy
When ensure that the ingredient of extruding aluminium alloy meets 2D12 standard requirements.Moreover, the present invention also reduces while adjusting Mn content
Si content and Fe content, and Cu content is optimized, the present invention carries out the content of various alloying elements in 2D12 aluminium alloy excellent
Change, under the comprehensive function of various alloy element component contents, makes the mechanical property of 2D12 extruding aluminium alloy provided by the invention
High, performance is stablized, and performance surplus capacity is sufficient.
The present invention provides a kind of preparation method of the 2D12 extruding aluminium alloy of optimizing components described in above-mentioned technical proposal,
Include:
Alloy cast ingot is successively heated, is squeezed, is quenched and tension straingtening, the 2D12 extruded aluminium for obtaining optimizing components are closed
Gold.
In the present invention, the 2D12 extruded aluminium of optimizing components described in the ingredient of the alloy cast ingot and above-mentioned technical proposal is closed
The ingredient of gold is consistent, and details are not described herein.
The present invention does not have special limitation to the preparation method of the alloy cast ingot, and use is well known to those skilled in the art
The preparation method of aluminium alloy cast ingot carries out ingredient, melting and casting and is prepared.
In the present invention, the temperature of the heating is preferably 420~460 DEG C, and more preferably 430~450 DEG C, most preferably
435~445 DEG C.
In the present invention, the cylinder temperature in the extrusion process is preferably 420~450 DEG C, and more preferably 425~440 DEG C, most
Preferably 430~435 DEG C.
In the present invention, the mold temperature in the extrusion process is preferably 400~450 DEG C, more preferably 425~450
DEG C, most preferably 435~450 DEG C.
In the present invention, the extrusion speed in the extrusion process is preferably 0.2~1.2m/min, more preferably 0.3~
1.0m/min, most preferably 0.4~0.6m/min.
In the present invention, the extrusion coefficient in the extrusion process is preferably 30~35, and more preferably 31~34, most preferably
It is 32~33.In the present invention, the extrusion coefficient in the extrusion process is preferably 48~52, and more preferably 49~51, it is optimal
It is selected as 50.
In the present invention, the temperature of the quenching is preferably 488~498 DEG C, and more preferably 492~498 DEG C, most preferably
494~496 DEG C.
In the present invention, the soaking time in the quenching process is preferably 15~120min, more preferably 20~
90min, more preferably 30~70min, most preferably 40~50min.The present invention is preferably according to the maximum wall of extruded product profile
Thick or diameter selects suitable soaking time.In the present invention, when profile thickness is less than 1.2mm in the quenching process, heat preservation
Time is preferably 10~20min, more preferably 12~18min, most preferably 14~16min；Profile thickness is 3.1~5.0mm
When, soaking time is preferably 25~35min, more preferably 28~32min, most preferably 30min；Profile thickness is 11~20mm
When, soaking time is preferably 45~55min, more preferably 48~52min, most preferably 50min；Profile thickness is 31~50mm
When, soaking time is preferably 85~95min, more preferably 88~92min, most preferably 90min；Profile thickness be 1.3~
When 3.0mm, soaking time is preferably 15~25min, more preferably 18~22min, most preferably 20min；Profile thickness is 5.1
When~10mm, soaking time is preferably 35~45min, more preferably 38~42min, most preferably 40min；Profile thickness is 21
When~30mm, soaking time is preferably 65~75min, more preferably 68~72min, most preferably 70min；Profile thickness is 51
When~75mm, soaking time is preferably 115~125min, more preferably 118~122min, most preferably 120min.
In the present invention, the temperature of cooling water is preferably 10~40 DEG C in the quenching process, and more preferably 20~35 DEG C,
Most preferably 25~30 DEG C.
In the present invention, the quenching shift time in the quenching process preferably≤15 seconds, more preferably 5~12 seconds, most
Preferably 8~10 seconds；The quenching shift time refers to the time submerged completely in water from opening quenching fire door to aluminium alloy.
In the present invention, the extensibility during the tension straingtening is preferably 1.5~3%, and more preferably 2~2.5%,
Most preferably 2.2~2.3%.
In the present invention, after the tension straingtening it is also preferable to include:
Product after tension straingtening is sampled.
The present invention does not have special limitation to the method for the sampling, and those skilled in the art adopt according to practical condition
It is sampled with suitable sampling method.
In the present invention, after the sampling it is also preferable to include:
Product after sampling is subjected to crop end.
In the present invention, cutting off during the crop end and squeezing the length of head end is preferably 300~500mm, more preferably
For 350~450mm, most preferably 380~420mm；The length that excision squeezes tail end is preferably 500~1000mm, more preferably
600~900mm, most preferably 700~800mm.
In the present invention, after the crop end it is also preferable to include:
Product after crop end is carried out essence to rectify.
In the present invention, the essence is rectified to align the shape position error of product after extruding, and such as curvature is turned round and twists degree, plane
Gap etc..The present invention method strong to the essence does not have special limitation, and those skilled in the art can be according to practical condition
It carries out essence using method well known in the art to rectify, such as aligning or multiple roll aligning are twisted in gag press straightening, torsion.
In the present invention, it is described essence rectify after the completion of it is also preferable to include:
Product after essence is rectified is carried out being cut into product, product inspection, coding and is packed and stored.The present invention to it is described be cut into product,
Product inspection, coding and the specific method being packed and stored do not have specific limitation, and those skilled in the art can be according to specific reality
The condition of production carries out aforesaid operations.
Often there is the underproof phenomenon of performance in 2D12 extruding aluminium alloy product properties in the prior art, and the present invention passes through
A large amount of research, discovery are adjusted quenching system, extend soaking time, change to squeeze temperature, extrusion coefficient and extend and stop
It puts the modes such as time and cannot make 2D12 extruding aluminium alloy product properties to improve or reach qualified, 2D12 extruding aluminium alloy can not be from
The technical problem that its performance does not reach requirement is solved in production technology.The present invention chemically seeks to break through on ingredient, it is contemplated that
The purity of 2D12 aluminium alloy is higher, and impurity content is less, is not easy to form hardening constituent, therefore change the chemical component of ingot casting, pass through
The chemical component of 2D12 extruding aluminium alloy is adjusted, the mechanical property of this aluminium alloy is effectively provided, meets production
It needs.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff it is improved or retouching all other example, shall fall within the protection scope of the present invention.
Embodiment 1
The 2D12 extruding aluminium alloy of optimizing components is prepared by the following method:
Alloy cast ingot is successively heated, squeezes, quench, tension straingtening, sampling, crop end, essence are rectified, be cut into product, at
Product examine tests, coding and is packed and stored, and obtains 2D12 extruding aluminium alloy；
The ingredient of the alloy cast ingot are as follows:
The Si of 0.05wt%；The Fe of 0.1wt%；The Cu of 4.5wt%；The Mn of 0.75wt%；The Mg of 1.5wt%；
The Zn of 0.05wt%；The Ti of 0.05wt%；The Ni of 0.03wt%；Single miscellaneous≤0.05wt%, total miscellaneous≤0.1wt%, surplus Al.
The temperature of the heating is 440 DEG C.
Specific process parameter in the extrusion process are as follows:
Cylinder temperature is 430 DEG C, and mold temperature is 435 DEG C, extrusion speed 0.7m/min, extrusion coefficient 32.96.
Specific process parameter in the quenching process are as follows:
Hardening heat is 495 DEG C, and soaking time is 70min (profile thickness is 20~30mm), and cooling water temperature is 25 DEG C,
Quenching shift time is 10 seconds.
Extensibility during the tension straingtening is 2.5%.
Referring to ASTM B557M-15 test method, the 2D12 for the optimizing components that the embodiment of the present invention 1 is prepared is squeezed
Aluminium alloy carries out yield strength detection, and testing result is the 2D12 extruded aluminium for the optimizing components that the embodiment of the present invention 1 is prepared
The yield strength of alloy is 350MPa.
Referring to ASTM B557M-15 test method, the 2D12 for the optimizing components that the embodiment of the present invention 1 is prepared is squeezed
Aluminium alloy carries out tensile strength detection, and testing result is the 2D12 extruded aluminium for the optimizing components that the embodiment of the present invention 1 is prepared
The tensile strength of alloy is 533MPa.
Referring to ASTM B557M-15 test method, the 2D12 for the optimizing components that the embodiment of the present invention 1 is prepared is squeezed
Aluminium alloy carries out elongation percentage detection, and testing result is that the 2D12 extruded aluminium for the optimizing components that the embodiment of the present invention 1 is prepared is closed
The elongation percentage of gold is 19%.
Embodiment 2
The 2D12 extruding aluminium alloy of optimizing components is prepared by the following method:
Alloy cast ingot is successively heated, squeezes, quench, tension straingtening, sampling, crop end, essence are rectified, be cut into product, at
Product examine tests, coding and is packed and stored, and obtains the 2D12 extruding aluminium alloy of optimizing components；
The ingredient of the alloy cast ingot are as follows:
The Si of 0.15wt%；The Fe of 0.25wt%；The Cu of 4.9wt%；The Mn of 0.9wt%；The Mg of 1.8wt%；0.1wt%
Zn；The Ti of 0.1wt%；The Ni of 0.05wt%；Single miscellaneous≤0.05wt%, total miscellaneous≤0.1wt%, surplus Al.
The temperature of the heating is 460 DEG C.
Specific process parameter in the extrusion process are as follows:
Cylinder temperature is 450 DEG C, and mold temperature is 450 DEG C, extrusion speed 1.2m/min, extrusion coefficient 32.96.
Specific process parameter in the quenching process are as follows:
Hardening heat is 495 DEG C, and soaking time is 120min (51~75mm of profile thickness), and cooling water temperature is 40 DEG C,
Quenching shift time is 15 seconds.
Extensibility during the tension straingtening is 3%.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 2 being prepared into
The detection of row yield strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 2 is prepared is bent
Taking intensity is 336MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 2 being prepared into
The detection of row tensile strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 2 is prepared resists
Tensile strength is 515MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 2 being prepared into
The detection of row elongation percentage, testing result is the extension of the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 2 is prepared
Rate is 19%.
Embodiment 3
The 2D12 extruding aluminium alloy of optimizing components is prepared by the following method:
Alloy cast ingot is successively heated, squeezes, quench, tension straingtening, sampling, crop end, essence are rectified, be cut into product, at
Product examine tests, coding and is packed and stored, and obtains the 2D12 extruding aluminium alloy of optimizing components；
The ingredient of the alloy cast ingot are as follows:
The Si of 0.1wt%；The Fe of 0.2wt%；The Cu of 4.3wt%；The Mn of 0.65wt%；The Mg of 1.3wt%；0.03wt%
Zn；The Ti of 0.03wt%；The Ni of 0.01wt%；Single miscellaneous≤0.05wt%, total miscellaneous≤0.1wt%, surplus Al.
The temperature of the heating is 420 DEG C.
Specific process parameter in the extrusion process are as follows:
Cylinder temperature is 420 DEG C, and mold temperature is 400 DEG C, extrusion speed 0.2m/min, extrusion coefficient 32.96.
Specific process parameter in the quenching process are as follows:
Hardening heat is 495 DEG C, and soaking time is 15min (profile thickness 1.2mm), and cooling water temperature is 10 DEG C, is quenched
Fiery transfer time is 5 seconds.
Extensibility during the tension straingtening is 1.5%.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 3 being prepared into
The detection of row yield strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 3 is prepared is bent
Taking intensity is 329MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 3 being prepared into
The detection of row tensile strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 3 is prepared resists
Tensile strength is 492MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 3 being prepared into
The detection of row elongation percentage, testing result is the extension of the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 3 is prepared
Rate is 17.5%.
Embodiment 4
The 2D12 extruding aluminium alloy of optimizing components, the difference with embodiment 1 are prepared according to method described in embodiment 1
It is, the extrusion coefficient in extrusion process is 49.44.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 4 being prepared into
The detection of row yield strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 4 is prepared is bent
Taking intensity is 345MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 4 being prepared into
The detection of row tensile strength, testing result are that the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 4 is prepared resists
Tensile strength is 527MPa.
According to the method for embodiment 1, the 2D12 extruding aluminium alloy for the optimizing components embodiment of the present invention 4 being prepared into
The detection of row elongation percentage, testing result is the extension of the 2D12 extruding aluminium alloy for the optimizing components that the embodiment of the present invention 4 is prepared
Rate is 18.5%.
From embodiment 1 and embodiment 4 as can be seen that the mechanical property of 2D12 extruding aluminium alloy is by squeezing in preparation process
Press the influence of coefficient little.
Comparative example 1
2D12 extruding aluminium alloy is prepared according to method described in embodiment 1, the difference from embodiment 1 is that, it is described
The ingredient of alloy cast ingot are as follows:
The Si of 0.05wt%；The Fe of 0.1wt%；The Cu of 4.5wt%；The Mn of 0.3wt%；The Mg of 1.5wt%；0.05wt%
Zn；The Ti of 0.05wt%；The Ni of 0.03wt%；Single miscellaneous≤0.05wt%, total miscellaneous≤0.1wt%, surplus Al.
According to the method for embodiment 1, yield strength is carried out to the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared
Detection, testing result are that the yield strength for the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared is 315MPa.
According to the method for embodiment 1, tensile strength is carried out to the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared
Detection, testing result are that the tensile strength for the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared is 410MPa.
According to the method for embodiment 1, elongation percentage inspection is carried out to the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared
It surveys, testing result is that the elongation percentage for the 2D12 extruding aluminium alloy that comparative example 1 of the present invention is prepared is 22%.
Comparative example 2
2D12 extruding aluminium alloy is prepared according to method described in embodiment 1, the difference from embodiment 1 is that, it is described
The ingredient of alloy cast ingot are as follows:
The Si of 0.05wt%；The Fe of 0.1wt%；The Cu of 3.8wt%；The Mn of 0.75wt%；The Mg of 1.5wt%；
The Zn of 0.05wt%；The Ti of 0.05wt%；The Ni of 0.03wt%；Single miscellaneous≤0.05wt%, total miscellaneous≤0.1wt%, surplus Al.
According to the method for embodiment 1, yield strength is carried out to the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared
Detection, testing result are that the yield strength for the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared is 321MPa.
According to the method for embodiment 1, tensile strength is carried out to the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared
Detection, testing result are that the tensile strength for the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared is 397MPa.
According to the method for embodiment 1, elongation percentage inspection is carried out to the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared
It surveys, testing result is that the elongation percentage for the 2D12 extruding aluminium alloy that comparative example 2 of the present invention is prepared is 19.5%.
As seen from the above embodiment, the present invention provides a kind of 2D12 extruding aluminium alloy of optimizing components, ingredients are as follows:≤
The Si of 0.15wt%；The Fe of≤0.25wt%；The Cu of 4.3~4.9wt%；The Mn of 0.65~0.9wt%；1.3~1.8wt%'s
Mg；The Zn of≤0.1wt%；The Ti of≤0.1wt%；The Ni of≤0.05wt%；Surplus is Al.The 2D12 that the prior art provides is squeezed
Aluminium alloy capability is poor, and the present invention controls Mn constituent content and exist by being adjusted to 2D12 extruding aluminium alloy Mn content
In the critical field of 2D12 aluminium alloy, while content optimization is carried out to other alloying elements, greatly improves 2D12 extruded aluminium
The mechanical property of alloy, while guaranteeing that the ingredient of aluminium alloy meets 2D12 standard requirements.
What has been described above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of 2D12 extruding aluminium alloy of optimizing components, ingredient are as follows:
The Si of≤0.15wt%；
The Fe of≤0.25wt%；
The Cu of 4.3~4.9wt%；
The Mn of 0.65~0.9wt%；
The Mg of 1.3~1.8wt%；
The Zn of≤0.1wt%；
The Ti of≤0.1wt%；
The Ni of≤0.05wt%；
Surplus is Al.
2. the 2D12 extruding aluminium alloy of optimizing components according to claim 1, which is characterized in that the mass content of the Si
It is 0.03~0.1%；
The mass content of the Fe is 0.03~0.2%.
3. the 2D12 extruding aluminium alloy of optimizing components according to claim 1, which is characterized in that the mass content of the Cu
It is 4.4~4.7%.
4. the 2D12 extruding aluminium alloy of optimizing components according to claim 1, which is characterized in that the mass content of the Mn
It is 0.7~0.8%.
5. a kind of preparation method of the 2D12 extruding aluminium alloy of optimizing components described in claim 1, comprising:
Alloy cast ingot is successively heated, is squeezed, is quenched and tension straingtening, obtaining the 2D12 extruding aluminium alloy of optimizing components；
The ingredient of the alloy cast ingot are as follows:
The Si of≤0.15wt%；
The Fe of≤0.25wt%；
The Cu of 4.3~4.9wt%；
The Mn of 0.65~0.9wt%；
The Mg of 1.3~1.8wt%；
The Zn of≤0.1wt%；
The Ti of≤0.1wt%；
The Ni of≤0.05wt%；
Surplus is Al.
6. according to the method described in claim 5, it is characterized in that, the temperature of the heating is 420~460 DEG C.
7. according to the method described in claim 5, it is characterized in that, the cylinder temperature in the extrusion process is 420~450 DEG C；
Mold temperature in the extrusion process is 400~450 DEG C.
8. according to the method described in claim 5, it is characterized in that, the extrusion speed in the extrusion process is 0.2~1.2m/
min；
Extrusion coefficient in the extrusion process is 30~35 or 48~52.
9. according to the method described in claim 5, it is characterized in that, the temperature of the quenching is 485 DEG C；
The cooling water temperature when quenching is 10~40 DEG C；
Time≤15 second of the quenching transfer.
10. according to the method described in claim 5, it is characterized in that, soaking time in the quenching process be 15~
120min。
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| CN201811022845.5A CN109022972A (en) | 2018-09-04 | 2018-09-04 | A kind of 2D12 extruding aluminium alloy of optimizing components and preparation method thereof |
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| CN201811022845.5A CN109022972A (en) | 2018-09-04 | 2018-09-04 | A kind of 2D12 extruding aluminium alloy of optimizing components and preparation method thereof |
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