CN115747592B - Isotropic high-strength deformed aluminum alloy and preparation method thereof - Google Patents
Isotropic high-strength deformed aluminum alloy and preparation method thereof Download PDFInfo
- Publication number
- CN115747592B CN115747592B CN202211038694.9A CN202211038694A CN115747592B CN 115747592 B CN115747592 B CN 115747592B CN 202211038694 A CN202211038694 A CN 202211038694A CN 115747592 B CN115747592 B CN 115747592B
- Authority
- CN
- China
- Prior art keywords
- alloy
- namely
- aluminum alloy
- aluminum
- extrusion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims description 107
- 229910045601 alloy Inorganic materials 0.000 claims description 97
- 238000001125 extrusion Methods 0.000 claims description 36
- 229910052782 aluminium Inorganic materials 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- 238000005266 casting Methods 0.000 claims description 21
- 230000032683 aging Effects 0.000 claims description 19
- 239000011777 magnesium Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 14
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052749 magnesium Inorganic materials 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000007514 turning Methods 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 7
- 239000007769 metal material Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000004512 die casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000007962 solid dispersion Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
Abstract
The invention discloses an isotropic high-strength deformed aluminum alloy and a preparation method thereof, belonging to the technical field of nonferrous metal materials and processing thereof, wherein the isotropic high-strength deformed aluminum alloy comprises the following components in percentage by weight, namely, cu 3.5-5%, mg 1.2-2%, mn 0.5-0.8%, sc 0.3-0.5%, zr 0.2-0.4% and Sb 0.1-0.2%; the balance of Al and unavoidable impurities. The invention well solves the problems of large anisotropy, insufficient compression resistance, low bearing load under alternating, multidirectional and other complex loads and the like of the traditional extruded profile, and greatly promotes the development of aluminum alloy.
Description
Technical Field
The invention relates to the technical field of nonferrous metal materials and processing thereof, in particular to an isotropic high-strength deformed aluminum alloy and a preparation method thereof.
Background
Currently, a great number of main processing methods of industrial aluminum alloy products are still casting production, such as die casting, extrusion casting, semi-solid thixotropic forming and the like; there is a great difference between the development potential of wrought aluminum alloys in terms of structural materials and the current state of practical application.
Is mainly subject to the following significant technical drawbacks: the aluminum alloy member is designed simply according to the tensile property, so that potential safety hazards are brought, particularly, the aluminum alloy member is most seriously represented under the action of complex loads such as alternating loads, multidirectional loads and the like, the aluminum alloy bearing structural member is limited by the aluminum alloy member at the present stage, the aluminum alloy member is still obtained in a die casting or semi-solid state mode, the limitation of molding of a casting method and a series of problems such as thick structure, poor strength performance, large brittleness, difficult plastic working and the like of the cast aluminum alloy are solved, and the application and popularization of the aluminum alloy are greatly limited.
Therefore, a low-temperature plastic deformation manufacturing technology of the high-strength deformed aluminum alloy is developed, a novel high-strength deformed aluminum alloy material with isotropy mechanical property is developed, the service capacity of the novel high-strength deformed aluminum alloy material under the complex working condition is improved, the light high-strength characteristic of the deformed aluminum alloy can be fully exerted, and the novel high-strength deformed aluminum alloy material has very practical engineering value.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an isotropic high-strength wrought aluminum alloy and a preparation method thereof; the isotropic high-strength deformed aluminum alloy and the preparation method thereof well solve the problems of large anisotropy and insufficient compression resistance of the traditional extruded profile, low bearing load under alternating, multidirectional and other complex loads and the like, and greatly promote the development of the aluminum alloy.
In order to solve the technical problems, the isotropic high-strength deformed aluminum alloy provided by the invention comprises the following components in percentage by weight, namely, cu 3.5-5%, mg 1.2-2%, mn 0.5-0.8%, sc 0.3-0.5%, zr 0.2-0.4% and Sb 0.1-0.2%; the balance of Al and unavoidable impurities.
The method for preparing the isotropic high-strength wrought aluminum alloy comprises the following steps,
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium, pure antimony, intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20 Zr;
step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 700-720 ℃, and preserving heat until the alloy is completely melted to remove surface scum; then heating to 730-740 ℃, uniformly stirring, cooling to 690-700 ℃ and preserving heat to obtain alloy liquid;
step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely homogenizing the as-cast alloy obtained in the step S3;
step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 for later use;
step S6: extruding, namely processing the aluminum bar obtained in the step S5 according to an extrusion process;
step S7: and (3) aging, namely performing heat treatment on the aluminum bar obtained in the step S6 according to an aging process.
In a further improvement of the invention, in the step S1, the preheating temperature is 200-300 ℃.
In a further development of the invention, in step S3, the casting is semi-continuous casting.
In a further improvement of the invention, in the step S4, the homogenization treatment is carried out for 12-24 hours at the temperature of 450-470 ℃.
In the further improvement of the invention, in the step S5, the size of the ingot sawing and turning billet is phi 300mm.
In the further improvement of the invention, in the step S6, the extrusion temperature of the extrusion process is 420-460 ℃, the extrusion speed is 1.5-2.5 m.min -1, and the extrusion ratio is 10-20:1.
In the further improvement of the invention, in the step S7, the aging process is to keep the temperature at 170-180 ℃ for 6-12 h.
Compared with the prior art, the invention has the following beneficial effects:
The invention well solves the problems of large anisotropy, insufficient compression resistance, low bearing load under alternating, multidirectional and other complex loads and the like of the traditional extruded profile, and greatly promotes the development of aluminum alloy.
Drawings
For a clearer description of the background or technical solutions of the present invention, the following description is made in brief with reference to the attached drawings, which are used in the prior art or in the detailed description; it should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or adjustments of size, which would otherwise be used to achieve the effects of the present invention, are included within the scope of the present invention.
FIG. 1 is a photograph showing a microstructure of an aluminum alloy material according to example 1 of the present invention.
FIG. 2 is a photograph showing the microstructure of an aluminum alloy material according to example 2 of the present invention.
FIG. 3 is a photograph showing a microstructure of an aluminum alloy material according to example 3 of the present invention.
FIG. 4 is a photograph showing a microstructure of an aluminum alloy material according to example 4 of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention should be included in the scope of protection of the present invention.
Meanwhile, references in the specification to terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention, but rather, changes or adaptations of the relative relationships thereof are regarded as being within the scope of the present invention that can be implemented without substantial modification of technical content.
Meanwhile, in the description of the present specification, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or by communication between two components, the specific meaning of the terms in the present invention will be understood by those skilled in the art in the light of the specific circumstances.
At present, great differences exist between the development potential of the deformed aluminum alloy in terms of structural materials and the current situation of practical application; therefore, a low-temperature plastic deformation manufacturing technology of the high-strength deformed aluminum alloy is developed, a novel high-strength deformed aluminum alloy material with isotropy mechanical property is developed, the service capacity of the novel high-strength deformed aluminum alloy material under the complex working condition is improved, the light high-strength characteristic of the deformed aluminum alloy can be fully exerted, and the novel high-strength deformed aluminum alloy material has very practical engineering value.
The isotropic high-strength deformed aluminum alloy well solves the problems of large anisotropy, insufficient compression resistance, low bearing load under alternating, multidirectional and other complex loads of the traditional extruded profile, and greatly promotes the development of the aluminum alloy.
According to the method for manufacturing the isotropic high-strength deformed aluminum alloy, the high-solid-solubility element Mg and the high-solid-solubility rare earth element Sc are added into aluminum, an aluminum alloy cast blank with high solid solubility is formed after homogenization treatment, fine and dispersed precipitate phases can be formed in the subsequent plastic processing process and after multistage aging treatment, the strain hardening rate of the alloy is improved, the uniform strain degree of the alloy is improved, and therefore the strength and the elongation of the alloy are improved.
The method for manufacturing the isotropic high-strength deformed aluminum alloy obtains fine dynamic recrystallization grains through low-temperature pre-extrusion with one-time large extrusion ratio, improves the strengthening and elongation of the alloy, shortens the production period and reduces the production cost.
By using the method for manufacturing the isotropic high-strength deformed aluminum alloy, disclosed by the application, the start of non-basal plane slip in plastic deformation is promoted by adding the rare earth element Sc, and the strong texture of the plastic deformation basal plane is greatly weakened by isothermal reciprocating extrusion combining elongation strain and compression strain, so that the mechanical property anisotropy caused by the texture is eliminated.
The method for manufacturing the isotropic high-strength deformed aluminum alloy realizes the composite strengthening effect of fine crystal, solid solution and dispersion precipitation phases, and simultaneously eliminates the mechanical property anisotropy phenomenon caused by textures, so that the aluminum alloy has excellent mechanical properties such as isotropic strength, elongation and the like.
The technical proposal is as follows:
An isotropic high-strength deformed aluminum alloy comprises, by weight, 3.5-5% of Cu, 1.2-2% of Mg, 0.5-0.8% of Mn, 0.3-0.5% of Sc, 0.2-0.4% of Zr0.2% and 0.1-0.2% of Sb; the balance of Al and unavoidable impurities.
A method for producing an isotropic high-strength wrought aluminum alloy comprising the steps of,
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium, pure antimony, intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20 Zr;
step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 700-720 ℃, and preserving heat until the alloy is completely melted to remove surface scum; then heating to 730-740 ℃, uniformly stirring, cooling to 690-700 ℃ and preserving heat to obtain alloy liquid;
step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely homogenizing the as-cast alloy obtained in the step S3;
step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 for later use;
step S6: extruding, namely processing the aluminum bar obtained in the step S5 according to an extrusion process;
step S7: and (3) aging, namely performing heat treatment on the aluminum bar obtained in the step S6 according to an aging process.
In the step S1, the preheating temperature is 200-300 ℃; in the step S3, casting is semi-continuous casting; in the step S4, the homogenization treatment is carried out for 12 to 24 hours at the temperature of 450 to 470 ℃; in the step S5, the size of a blank after ingot sawing and turning is phi 300mm; in the step S6, the extrusion temperature of the extrusion process is 420-460 ℃, the extrusion speed is 1.5-2.5 m.min -1, and the extrusion ratio is 10-20:1; in the step S7, the aging process is to keep the temperature at 170-180 ℃ for 6-12 h.
Example 1
An isotropic high-strength deformed aluminum alloy comprises the following components in percentage by weight, cu3.5%, mg1.2%, mn0.5%, sc0.3%, zr0.2% and Sb0.1%, and the balance of Al and unavoidable impurity elements.
The preparation method of the isotropic high-strength deformed aluminum alloy comprises the following steps:
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium and pure antimony with intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr to 250 ℃;
Step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 700 ℃, and preserving the heat until the alloy is completely melted and removing surface scum; then heating to 740 ℃, uniformly stirring, cooling to 690 ℃ and preserving heat to obtain alloy liquid;
Step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, wherein the homogenizing treatment of the as-cast alloy obtained in the step S3 is carried out for 24 hours at the temperature of 450 ℃;
Step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 into a steel sheet, wherein the diameter of the steel sheet is 300mm;
Step S6: and (3) extruding, namely extruding the aluminum bar obtained in the step (S5) at the temperature of 450 ℃ at the extrusion speed of 1.5 m.min -1, wherein the extrusion ratio is 15:1.
Step S7: aging, namely performing aging process treatment on the aluminum bar obtained in the step S6: preserving heat for 6h at 180 ℃.
Example 2
An isotropic high-strength deformed aluminum alloy comprises the following components in percentage by weight, cu4.0%, mg1.5%, mn0.6%, sc0.4%, zr0.3% and Sb0.1%, and the balance of Al and unavoidable impurity elements.
The preparation method of the isotropic high-strength deformed aluminum alloy comprises the following steps:
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium and pure antimony with intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr to 250 ℃;
Step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 720 ℃, and preserving the heat until the alloy is completely melted and removing surface scum; then heating to 740 ℃, uniformly stirring, cooling to 700 ℃ and preserving heat to obtain alloy liquid;
Step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely preserving heat for 24 hours at 470 ℃ in the homogenizing treatment of the cast alloy obtained in the step S3;
Step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 into a steel sheet, wherein the diameter of the steel sheet is 300mm;
step S6: extruding, namely performing extrusion process treatment on the aluminum bar obtained in the step S5: the extrusion temperature was 450 ℃, the extrusion speed was 2.0 m.min -1, and the extrusion ratio was 15:1.
Step S7: aging, namely performing aging process treatment on the aluminum bar obtained in the step S6: preserving the heat for 8 hours at 170 ℃.
Example 3
An isotropic high-strength deformed aluminum alloy comprises the following components in percentage by weight, cu4.5%, mg1.8%, mn0.7%, sc0.4%, zr0.3% and Sb0.2%, and the balance of Al and unavoidable impurity elements.
The preparation method of the isotropic high-strength deformed aluminum alloy comprises the following steps:
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium and pure antimony with intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr to 250 ℃;
Step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 710 ℃, and preserving the heat until the alloy is completely melted and removing surface scum; then heating to 740 ℃, uniformly stirring, cooling to 700 ℃ and preserving heat to obtain alloy liquid;
Step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely preserving heat for 24 hours at 470 ℃ in the homogenizing treatment of the cast alloy obtained in the step S3;
Step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 into a steel sheet, wherein the diameter of the steel sheet is 300mm;
Step S6: extruding, namely performing extrusion process treatment on the aluminum bar obtained in the step S5: the extrusion temperature was 460℃and the extrusion speed was 2.5 m.min -1, the extrusion ratio was 15:1.
Step S7: aging, namely performing aging process treatment on the aluminum bar obtained in the step S6: preserving heat for 6h at 180 ℃.
Example 4
An isotropic high-strength deformed aluminum alloy comprises, by weight, 5% of Cu, 1.2-2% of Mg, 0.8% of Mn, 0.5% of Sc, 0.4% of Zr0.2% and 0.2% of Sb, and the balance of Al and unavoidable impurity elements.
The preparation method of the isotropic high-strength deformed aluminum alloy comprises the following steps:
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium and pure antimony with intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr to 250 ℃;
Step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 720 ℃, and preserving the heat until the alloy is completely melted and removing surface scum; then heating to 730-740 ℃, uniformly stirring, cooling to 700 ℃ and preserving heat to obtain alloy liquid;
Step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely preserving heat for 24 hours at 470 ℃ in the homogenizing treatment of the cast alloy obtained in the step S3;
Step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 into a steel sheet, wherein the diameter of the steel sheet is 300mm;
Step S6: extruding, namely performing extrusion process treatment on the aluminum bar obtained in the step S5: the extrusion temperature is 460 ℃, the extrusion speed is 2.5 m.min < -1 >, and the extrusion ratio is 15:1.
Step S7: aging, namely performing aging process treatment on the aluminum bar obtained in the step S6: preserving heat for 6h at 180 ℃.
As shown in FIGS. 1 to 4, the aluminum alloy sheets prepared in the comparative examples and the aluminum alloy profiles prepared in examples 1, 2, 3 and 4 were subjected to tensile test using a CMT5105-300kN microcomputer controlled electronic universal tester, and the test results are shown in Table 1.
Table 1 results of mechanical property test of each sample
| Alloy | Tensile strength of | Yield strength of | Elongation percentage |
| Example 1 | 576 | 492 | 8.3 |
| Example 2 | 581 | 485 | 7.8 |
| Example 3 | 595 | 512 | 7.2 |
| Example 4 | 589 | 488 | 7.3 |
The application solves the technical problem of poor high-temperature mechanical property of the aluminum alloy in the prior art, and improves the thermal property, mechanical property and stability of the rare earth aluminum alloy; by controlling the content of Sc in the aluminum alloy, the microstructure of the finally prepared aluminum alloy is uniform, the grain size is smaller, the basal plane texture is converted into the rare earth texture, the promotion of non-basal plane sliding opening is realized, the high plasticity is shown, the strength is not sacrificed by the improvement of the plasticity, and the tensile strength of the alloy is improved; in addition, the cost of raw materials used in the preparation of the aluminum alloy is low, the plasticity of the aluminum alloy can be obviously changed by only adding a small amount of rare earth elements, the preparation method is simple, the traditional extrusion is only needed once, no complex processing technology is needed, the portability is high, and the aluminum alloy is convenient to realize in industry.
Although the present invention has been described in detail with reference to the drawings and in connection with the preferred embodiments, the present invention is not limited thereto, and various equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications or substitutions shall be included in the scope of the present invention/those skilled in the art to which the present invention pertains, and it is intended that all such modifications or substitutions be included within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the appended claims.
Claims (5)
1. The isotropic high-strength deformed aluminum alloy is characterized by comprising the following components, by weight, 3.5-5% of Cu, 1.2-2% of Mg, 0.5-0.8% of Mn, 0.3-0.5% of Sc, 0.2-0.4% of Zr0.1-0.2% of Sb; the balance of Al and unavoidable impurities;
the method for preparing the isotropic high-strength deformed aluminum alloy comprises the following steps of S1, preheating; s2, smelting; s3, casting; step S4, homogenizing, wherein the homogenizing treatment is carried out for 12-24 hours at the temperature of 450-470 ℃; s5, machining; step S6, extrusion is isothermal reciprocating extrusion with combination of elongation strain and compression strain, the extrusion temperature of the extrusion process is 420-460 ℃, the extrusion speed is 1.5-2.5 m.min -1, and the extrusion ratio is 10-20:1; and S7, aging, wherein the aging process is to keep the temperature at 170-180 ℃ for 6-12 h.
2. A method for producing an isotropic high-strength wrought aluminum alloy according to claim 1, comprising the steps of,
Step S1: preheating, namely weighing and preheating pure aluminum, pure magnesium, pure antimony, intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20 Zr;
step S2: smelting, namely melting pure aluminum, adding pure magnesium, pure antimony and intermediate alloy Al-25Cu, intermediate alloy Al-20Mn, intermediate alloy Al-20Sc and intermediate alloy Al-20Zr when the temperature is heated to 700-720 ℃, and preserving heat until the alloy is completely melted to remove surface scum; then heating to 730-740 ℃, uniformly stirring, cooling to 690-700 ℃ and preserving heat to obtain alloy liquid;
step S3: casting, namely casting the alloy liquid obtained in the step S2 into a mould to obtain an as-cast alloy;
Step S4: homogenizing, namely homogenizing the as-cast alloy obtained in the step S3;
step S5: machining, namely sawing and turning the cast ingot obtained in the step S4 for later use;
step S6: extruding, namely processing the aluminum bar obtained in the step S5 according to an extrusion process;
step S7: and (3) aging, namely performing heat treatment on the aluminum bar obtained in the step S6 according to an aging process.
3. The method for producing an isotropic high-strength wrought aluminum alloy according to claim 2, wherein the preheating temperature in step S1 is 200 to 300 ℃.
4. The method of producing an isotropic high-strength wrought aluminum alloy according to claim 2, wherein in step S3, the casting is semi-continuous casting.
5. The method for producing an isotropic high-strength wrought aluminum alloy according to claim 2, wherein in step S5, the ingot size after ingot sawing and turning is Φ300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038694.9A CN115747592B (en) | 2022-08-29 | 2022-08-29 | Isotropic high-strength deformed aluminum alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038694.9A CN115747592B (en) | 2022-08-29 | 2022-08-29 | Isotropic high-strength deformed aluminum alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115747592A CN115747592A (en) | 2023-03-07 |
| CN115747592B true CN115747592B (en) | 2024-04-16 |
Family
ID=85349367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211038694.9A Active CN115747592B (en) | 2022-08-29 | 2022-08-29 | Isotropic high-strength deformed aluminum alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115747592B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441759A (en) * | 2015-11-27 | 2016-03-30 | 天津大学 | Sc-containing high-strength Al-Cu-Mg-Mn-Zr alloy and preparation method thereof |
| CN111020320A (en) * | 2019-09-23 | 2020-04-17 | 山东南山铝业股份有限公司 | High-strength aluminum alloy and production method thereof |
| CN112157220A (en) * | 2020-08-30 | 2021-01-01 | 长沙合丰耐磨材料有限公司 | Preparation method of Al-Cu-Mg-Mn series aluminum alloy casting |
| CN113564438A (en) * | 2021-07-15 | 2021-10-29 | 烟台南山学院 | Economical flame-retardant large-deformation aluminum alloy material and preparation method thereof |
| WO2022041268A1 (en) * | 2020-08-30 | 2022-03-03 | 中南大学 | High-strength al-cu-mg-mn aluminum alloy and preparation method therefor |
| CN114875286A (en) * | 2022-05-30 | 2022-08-09 | 山东南山铝业股份有限公司 | Rare earth-free low-alloy high-strength and high-toughness aluminum alloy and preparation method thereof |
-
2022
- 2022-08-29 CN CN202211038694.9A patent/CN115747592B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441759A (en) * | 2015-11-27 | 2016-03-30 | 天津大学 | Sc-containing high-strength Al-Cu-Mg-Mn-Zr alloy and preparation method thereof |
| CN111020320A (en) * | 2019-09-23 | 2020-04-17 | 山东南山铝业股份有限公司 | High-strength aluminum alloy and production method thereof |
| CN112157220A (en) * | 2020-08-30 | 2021-01-01 | 长沙合丰耐磨材料有限公司 | Preparation method of Al-Cu-Mg-Mn series aluminum alloy casting |
| WO2022041268A1 (en) * | 2020-08-30 | 2022-03-03 | 中南大学 | High-strength al-cu-mg-mn aluminum alloy and preparation method therefor |
| CN113564438A (en) * | 2021-07-15 | 2021-10-29 | 烟台南山学院 | Economical flame-retardant large-deformation aluminum alloy material and preparation method thereof |
| CN114875286A (en) * | 2022-05-30 | 2022-08-09 | 山东南山铝业股份有限公司 | Rare earth-free low-alloy high-strength and high-toughness aluminum alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115747592A (en) | 2023-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240035123A1 (en) | High-strength al-cu-mg-mn aluminum alloy and preparation method therefor | |
| CN102230118B (en) | Magnesium alloy of high intensity and high yield ratio and preparation method thereof | |
| EP2121997B1 (en) | Ai-cu alloy product suitable for aerospace application | |
| EP2274454B1 (en) | Alloy composition and preparation thereof | |
| EP3650561A1 (en) | Plastic wrought magnesium alloy and preparation method thereof | |
| CN110396629B (en) | 800 MPa-grade aluminum alloy extruded section and preparation method thereof | |
| US20040191111A1 (en) | Er strengthening aluminum alloy | |
| CN113430429A (en) | Multi-element heat-deformation-resistant rare earth aluminum alloy and preparation method thereof | |
| CN105132772A (en) | Low-cost non-rare-earth type high-strength magnesium alloy and preparing method thereof | |
| KR100434808B1 (en) | Method for making thin, high-strength, highly formable aluminium alloy strips | |
| US20150315689A1 (en) | Heat resistant aluminum base alloy and wrought semifinsihed product fabrication method | |
| CN110952005A (en) | Rapid-extrusion high-performance wrought aluminum alloy and preparation method thereof | |
| CN113444903A (en) | High-gadolinium rare earth magnesium alloy bar and preparation method thereof | |
| JP4856597B2 (en) | Magnesium alloy excellent in strength and elongation at high temperature and method for producing the same | |
| CN108707800A (en) | Low content of rare earth magnesium alloy materials of a kind of high-strength plasticity and preparation method thereof | |
| CN111218597B (en) | Low-cost high-heat-conductivity ultrahigh-plasticity magnesium alloy and preparation method thereof | |
| CN115747592B (en) | Isotropic high-strength deformed aluminum alloy and preparation method thereof | |
| CN111690846A (en) | Production process of superhard 6026 aluminum alloy profile | |
| CN114480930B (en) | Aluminum alloy section for passenger car body framework and preparation method thereof | |
| CN113444932A (en) | High-strength wrought aluminum alloy and preparation method thereof | |
| CN109097648A (en) | A kind of Mg-Al-Ca-Ce system magnesium alloy and preparation method thereof | |
| CN114525436A (en) | High-elongation deformation rare earth aluminum alloy and manufacturing method thereof | |
| CN114525421A (en) | Magnesium alloy and preparation method and application thereof | |
| CN113897567A (en) | Homogenization thermomechanical treatment method for rapidly refining and homogenizing cast aluminum-lithium alloy | |
| US20210332462A1 (en) | Aluminum alloy and manufacturing method thereof |
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 | ||
| GR01 | Patent grant |