CN104513921A - A high-strength high-toughness aluminum alloy substrate for section bars and a preparing method thereof - Google Patents
A high-strength high-toughness aluminum alloy substrate for section bars and a preparing method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—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 silicon as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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Abstract
The invention discloses a high-strength high-toughness aluminum alloy substrate for section bars. The aluminum alloy substrate is characterized in that: the aluminum alloy substrate comprises 0.48-0.60% by weight of Mg, 0.48-0.50% by weight of Si, 0.08-0.4% by weight of Cu, 0.35-0.42% by weight of Fe, 0.05-0.5% by weight of Sb, 0.12-0.20% by weight of mixed rare earth RE, 0.03-0.05% by weight of Sr, and 0.056-0.168% by weight of Zr, with the balance being Al, and the total amount of the RE, the Sr and the Zr being controlled at 0.19-0.26%; the area percentage of an Al2O3 phase between the surface of the aluminum alloy substrate and 1 mm below the surface is 0.2-1%; the particle size of a Mg-Si intermetallic compound is 1.5-2.5 [mu]m; the maximum length of an Al-Fe intermetallic compound is 5 [mu]m; the particle size of the Mg-Si intermetallic compound in the center of longitudinal section of the substrate is 0.2-1 [mu]m; and the substrate has advantages of high strength and high toughness and has good surface smoothness.
Description
Technical field
The present invention relates to a kind of aluminium alloy base plate and preparation method thereof, particularly relate to a kind of section bar high strength, high toughness Al-alloy substrate and preparation method thereof.
Background technology
Aluminium alloy has that density is little, specific tenacity is high, conduction and thermal conductivity good, be easy to be shaped and the advantage such as cheap, being widely used in the departments such as aerospace, communications and transportation, light industry building materials, is most widely used in light alloy, that consumption is maximum alloys.Since aluminum electrolysis technology obtains application, world's Aluminum obtains swift and violent development, and aluminium alloy has become one of the most frequently used two kinds of industrial alloys.Aluminium alloy is the metallic substance of a kind of comparatively " youth " simultaneously, just starts the industrial application of mass-producing in 20 beginnings of the century.Now, more than the consumption of aluminium, scope is wide, is only second to iron and steel, becomes the second largest metallic substance of practical application.Developing rapidly of aluminium application is the result that Aluminum Industry in The World circle continually develops new aluminum alloy materials and high-level efficiency forming technology.Liu Jingan, Liu Zhiming are in " aluminium processing " 2008, (2) 4-8 has delivered " aluminium alloy extruded industry and technology and equipment development status and trend " one literary composition, wherein describes aluminum alloy extrusion section bar and more and more demonstrates its critical role at civil areas such as industrial circle and building such as automobile, boats and ships, railway, Aeronautics and Astronautics.At present, the development of aluminium alloy extrusions extrusion technique rapidly in the world, each developed country of the world has been equipped with the aluminum section extruder of various forms, various structure, different tonnage, Extrusion Process of Aluminum Alloy Profile is to maximization, complicated, precise treatment, multi items, many specifications, multi-usage future development, and extrusion production is serialization increasingly, automatization and specialization also.At present, not only develop the large-size extruder of the special construction of some advanced persons, and have developed the mould of polytype extrusion structure and new extrusion process, and the solid of various complex contour and hollow piece can have been squeezed out.
Aluminium alloy extrusions plastic processing method routine adopts hot extrusion, its basic operation regulation aluminum alloy blank is heated to certain temperature put into mould, mold preheating temperature is generally lower than aluminum alloy blank Heating temperature, that is aluminum alloy blank heart portion temperature is apparently higher than aluminum alloy blank surface temperature, add mould inner surface frictional influence, when making extruding, aluminum alloy blank heart portion metal deformation flow speed is apparently higher than blank surface, cause significant viscous deformation uneven, thus making Microstructure and properties uneven, material anisotropy is obvious.Significantly, when 300 ~ 450 DEG C of temperature extrusion, dynamic recovery and recrystallization after aluminium alloy large plastometric set, particularly with the remarkable temperature rise that severe friction causes, make extrusion bar or section bar coarse grains, cause main performance index as intensity and elongation lower.
The Extrusion Process of Aluminum Alloy Profile technology of China is started late, although the stateowned enterprise of existing thousands of production aluminium section bars at present, have multiple stage ten thousand tons of extrusion machines, but no matter from the performance of squeezing prod or from production efficiency and standardization level, all there is larger gap with advanced international standard.Improve aluminium alloy over-all properties, optimal path is refining aluminum alloy tissue; Only make aluminum grain refinement to less than 10 μm, just likely significantly improve aluminium alloy over-all properties, and be conducive to subsequent heat treatment strengthening or further plastic working forming part.In recent decades in order to improve the performance of aluminium alloy, people concentrate on two differences but the direction be parallel to each other the direction of attention and effort: one is the ageing strengthening process considering aluminium alloy, separate out by adding new alloy element such as RE (rare earth), Zr, Sc and Ag etc. the performance that new strengthening phase improves aluminium alloy, other direction is exactly that the new plastic forming of metals technique of development controls tissue and then improves alloy mechanical performance.
In the past, as this aluminium alloy plate, based on have mechanical workout such as tolerance mirror finish etc. intensity, the reasons such as enough surface smoothnesss can be obtained.Meanwhile, in order to improve the shock-resistance of disk, also require that the intensity of substrate improves.Pressurization annealing is the method for existing conventional processing aluminium alloy extrusions, has a great impact mutually in its annealing temperature alloy, sometimes separates out the Al compared with volume particle size in the place that should not occur
3mg
2phase (β phase), thus worsen its performance.
Summary of the invention
An object of the present invention is to propose section bar high strength, high toughness Al-alloy substrate;
Two of object of the present invention is the preparation method proposing this section bar high strength, high toughness Al-alloy substrate.
For reaching this object, the present invention by the following technical solutions:
Each component is made up of following weight percentage:
Mg:0.48% ~ 0.60%; Si:0.48% ~ 0.50%; Cu0.08-0.4wt%; Fe:0.35 ~ 0.42%; Sb0.05-0.5wt%; Mixed rare earth: 0.12% ~ 0.20%; Sr:0.03% ~ 0.05%; Zr:0.056 ~ 0.168%; RE+Sr+Zr overall control exists: 0.19% ~ 0.26%; Surplus is Al;
The surperficial area occupation ratio to surperficial Al3Mg2 phase down between 1mm of described aluminium alloy base plate is the granularity of 0.2 ~ 1%, Mg-Si intermetallic compound is 1.5 ~ 2.5 μm, and the maximum length of Al-Fe intermetallic compound is 5 μm; The granularity of the Mg-Si intermetallic compound at center, substrate vertical section is 0.2 ~ 1 μm.
Described mixed rare earth is with Ce-La system mishmetal, wherein Ce:85 ~ 90wt%; La:10 ~ 15wt%.
Preferred each component is consisted of by following weight percentage: Mg:0.52% ~ 0.58%; Si:0.48% ~ 0.50%; Cu0.28-0.40wt%; Fe:0.38 ~ 0.40%; Sb0.42-0.48wt%; Mixed rare earth: 0.18% ~ 0.20%; Sr:0.04% ~ 0.05%; Zr:0.068 ~ 0.076%; RE+Sr+Zr overall control exists: 0.24% ~ 0.26%; Surplus is Al; .
The preparation method of section bar high strength, high toughness Al-alloy substrate, comprises the following steps:
(1) prepare burden: preparation Al-RE, Al-Sr, Al-Zr, Al-Sb, Al-Mg, Al-Si, Al-Fe and Al-Cu master alloy, aluminium adopts purity to be greater than the aluminium ingot of 99.97wt%, according to aforementioned desired raw material proportions raw material;
(2) melt: load weighted aluminium ingot is added in shaft furnace, heat up, treat that temperature rises to 730-758 DEG C and adds Al-Fe master alloy, treat that temperature rises to 760-800 DEG C, add Al-Cu, Al-Mg, Al-Si master alloy, stir, after all melting, at 760-800 DEG C of insulation 20 ~ 25min, add Al-Sb master alloy again, stir 5 ~ 10min, finally add Al-RE, Al-Sr, Al-Zr master alloy, stir 10 ~ 15min, stir; After insulation 20 ~ 25min, carry out on-the-spot sample analysis, adjust each constituent content in formula range;
(3) cast and casting: teeming temperature controls at 720 DEG C ~ 740 DEG C, and casting temp controls at 700 DEG C ~ 710 DEG C, adopts continuous casting;
(4) homogenizing thermal treatment: the temperature of Homogenization Treatments is: 520 DEG C ~ 530 DEG C, the treatment time is: 4 ~ 6h; Come out of the stove after Homogenization Treatments and cool fast, speed of cooling 150 ~ 180 DEG C/min;
(5) hot extrusion: before extruding, ingot blank carries out rapid heating, adopt electromagnetic induction to heat, Heating temperature is 470 DEG C-500 DEG C, and heat-up time is 50-70min; Extrusion billet temperature in is 460 DEG C ~ 490 DEG C, and temperature out is 450 DEG C ~ 470 DEG C, and extrusion speed is 12m/min ~ 15m/min;
(6) press quenching: online air blast quenching, wind speed is 5 ~ 10m/s, and Wind Volume cools, and speed of cooling is 280 ~ 320 DEG C/min;
(7) pressurization annealing: aluminium alloy plate step 6 obtained carries out pressurization anneal, keep within 1 ~ 2 hour, carrying out pressurization annealing the temperature of 300 ~ 320 DEG C, afterwards, cool with speed of cooling 50 ~ 68 DEG C/h, when being cooled to 150 DEG C, be cooled to less than 100 DEG C with speed of cooling 100 ~ 120 DEG C/h;
(8) T5 state ageing treatment: aging temp is 190 ~ 205 DEG C, the time is 2 ~ 4h.
Stirring in described fusing step is induction stirring.
Quenching described in step (6), adopts forced air cooling, the single or Compound cooling mode of warm water quench and/or cold-water quench cools.
Effect of the present invention is: can improve its heterogeneous microstructure and then improve composite technology performance, thus reaches and improve its extrusion processing performance, the mechanical property of shape product and chemical physics performance, and has significant energy conservation and consumption reduction effects.Improve the ununiformity of distortion; Can significantly crystal grain thinning, the obdurability after aluminium alloy process all improves a lot, and elongation can reach more than 40%, improves a lot than Al-alloy parts elongation, and its unit elongation at least improves 60%, is conducive to further plastic working forming part.Have a extensive future.
Accompanying drawing explanation
Fig. 1 is production technological process of the present invention.
Embodiment
Embodiment 1
Product consists of: Mg:0.54%; Si:0.48%; Cu0.35wt%; Fe:0.40%; Sb0.48wt%; Mixed rare earth: 0.18%; Sr:0.05%; Zr:0.068%; Surplus is Al;
(1) prepare burden: preparation Al-RE, Al-Sr, Al-Zr, Al-Sb, Al-Mg, Al-Si, Al-Fe and Al-Cu master alloy, aluminium adopts purity to be greater than the aluminium ingot of 99.97wt%, according to above-mentioned desired raw material proportions raw material;
(2) melt: load weighted aluminium ingot is added in shaft furnace, heat up, treat that temperature rises to 748 DEG C and adds Al-Fe master alloy, treat that temperature rises to 790 DEG C, add Al-Cu, Al-Mg, Al-Si master alloy, stir, after all melting, at 790 DEG C of insulation 20min, add Al-Sb master alloy again, stir 5min, finally add Al-RE, Al-Sr, Al-Zr master alloy, stir 10min, stir; After insulation 20min, carry out on-the-spot sample analysis, adjust each constituent content in formula range;
(3) cast and casting: teeming temperature controls at 720 DEG C, and casting temp controls at 710 DEG C, adopts continuous casting;
(4) homogenizing thermal treatment: the temperature of Homogenization Treatments is: 520 DEG C, the treatment time is: 4h; Come out of the stove after Homogenization Treatments and cool fast, speed of cooling 150 DEG C/min;
(5) hot extrusion: before extruding, ingot blank carries out rapid heating, adopt electromagnetic induction to heat, Heating temperature is 470 DEG C, and heat-up time is 50min; Extrusion billet temperature in is 460 DEG C, and temperature out is 460 DEG C, and extrusion speed is 12m/min;
(6) press quenching: online air blast quenching, wind speed is 5m/s, and Wind Volume cools, and speed of cooling is 320 DEG C/min;
(7) pressurization annealing: aluminium alloy plate step 6 obtained carries out pressurization anneal, keep within 1 hour, carrying out pressurization annealing the temperature of 300 DEG C, afterwards, cool with speed of cooling 50 DEG C/h, when being cooled to 150 DEG C, be cooled to less than 100 DEG C with speed of cooling 100 DEG C/h;
(8) T5 state ageing treatment: aging temp is 200 DEG C, the time is 2h.
Al between the lower 1mm in aluminium alloy base plate surface to surface of the present embodiment
3mg
2the area occupation ratio of phase is the granularity of 0.28%, Mg-Si intermetallic compound is 1.5 ~ 2.5 μm, and the maximum length of Al-Fe intermetallic compound is 5 μm; The granularity of the Mg-Si intermetallic compound at center, substrate vertical section is 0.2 ~ 1 μm.
Embodiment 2:
Product consists of: Mg:0.52%; Si:0.0.50%; Cu0.38wt%; Fe:0.42%; Sb0.42wt%; Mixed rare earth: 0.0.20%; Sr:0.03%; Zr:0.056%; Surplus is Al;
(1) prepare burden: preparation Al-RE, Al-Sr, Al-Zr, Al-Sb, Al-Mg, Al-Si, Al-Fe and Al-Cu master alloy, aluminium adopts purity to be greater than the aluminium ingot of 99.97wt%, according to the said products desired raw material proportions raw material;
(2) melt: load weighted aluminium ingot is added in shaft furnace, heat up, treat that temperature rises to 758 DEG C and adds Al-Fe master alloy, treat that temperature rises to 800 DEG C, add Al-Cu, Al-Mg, Al-Si master alloy, stir, after all melting, at 800 DEG C of insulation 25min, add Al-Sb master alloy again, stir 10min, finally add Al-RE, Al-Sr, Al-Zr master alloy, stir 15min, stir; After insulation 25min, carry out on-the-spot sample analysis, adjust each constituent content in formula range;
(3) cast and casting: teeming temperature controls at 740 DEG C, and casting temp controls at 710 DEG C, adopts continuous casting;
(4) homogenizing thermal treatment: the temperature of Homogenization Treatments is: 530 DEG C, the treatment time is: 6h; Come out of the stove after Homogenization Treatments and cool fast, speed of cooling 180 DEG C/min;
(5) hot extrusion: before extruding, ingot blank carries out rapid heating, adopt electromagnetic induction to heat, Heating temperature is 500 DEG C, and heat-up time is 70min; Extrusion billet temperature in is 470 DEG C, and temperature out is 450 DEG C DEG C, and extrusion speed is 15m/min;
(6) press quenching: online air blast quenching, wind speed is 10m/s, and Wind Volume cools, and speed of cooling is 320 DEG C/min;
(7) pressurization annealing: aluminium alloy plate step 6 obtained carries out pressurization anneal, keep within 2 hours, carrying out pressurization annealing the temperature of 320 DEG C, afterwards, cool with speed of cooling 68 DEG C/h, when being cooled to 150 DEG C, be cooled to less than 100 DEG C with speed of cooling 120 DEG C/h;
(8) T5 state ageing treatment: aging temp is 205 DEG C, the time is 4h.
Al between the lower 1mm in aluminium alloy base plate surface to surface of the present embodiment
3mg
2the area occupation ratio of phase is the granularity of 0.46%, Mg-Si intermetallic compound is 1.6 ~ 2.3 μm, and the maximum length of Al-Fe intermetallic compound is 5 μm; The granularity of the Mg-Si intermetallic compound at center, substrate vertical section is 0.4 ~ 0.9 μm.
Claims (6)
1. section bar high strength, a high toughness Al-alloy substrate, is characterized in that: each component is made up of following weight percentage:
Mg:0.48% ~ 0.60%; Si:0.48% ~ 0.50%; Cu0.08-0.4wt%; Fe:0.35 ~ 0.42%; Sb0.05-0.5wt%; Mixed rare earth: 0.12% ~ 0.20%; Sr:0.03% ~ 0.05%; Zr:0.056 ~ 0.168%; RE+Sr+Zr overall control exists: 0.19% ~ 0.26%; Surplus is Al;
Al between the lower 1mm in described aluminium alloy base plate surface to surface
3mg
2the area occupation ratio of phase is the granularity of 0.2 ~ 1%, Mg-Si intermetallic compound is 1.5 ~ 2.5 μm, and the maximum length of Al-Fe intermetallic compound is 5 μm; The granularity of the Mg-Si intermetallic compound at center, substrate vertical section is 0.2 ~ 1 μm.
2. section bar high strength according to claim 1, high toughness Al-alloy substrate, is characterized in that: described mixed rare earth is with Ce-La system mishmetal, wherein Ce:85 ~ 90wt%; La:10 ~ 15wt%.
3. section bar high strength according to claim 1 and 2, high toughness Al-alloy substrate, is characterized in that: each component is made up of following weight percentage:
Mg:0.52% ~ 0.58%; Si:0.48% ~ 0.50%; Cu0.28-0.40wt%; Fe:0.38 ~ 0.40%; Sb0.42-0.48wt%; Mixed rare earth: 0.18% ~ 0.20%; Sr:0.04% ~ 0.05%; Zr:0.068 ~ 0.076%; RE+Sr+Zr overall control exists: 0.24% ~ 0.26%; Surplus is Al; .
4. prepare the preparation method of section bar high strength, high toughness Al-alloy substrate described in any one of claims 1 to 3, it is characterized in that: comprise the following steps:
(1) prepare burden: preparation Al-RE, Al-Sr, Al-Zr, Al-Sb, Al-Mg, Al-Si, Al-Fe and Al-Cu master alloy, aluminium adopts purity to be greater than the aluminium ingot of 99.97wt%, according to any one of claims 1 to 3 desired raw material proportions raw material;
(2) melt: load weighted aluminium ingot is added in shaft furnace, heat up, treat that temperature rises to 730-758 DEG C and adds Al-Fe master alloy, treat that temperature rises to 760-800 DEG C, add Al-Cu, Al-Mg, Al-Si master alloy, stir, after all melting, at 760-800 DEG C of insulation 20 ~ 25min, add Al-Sb master alloy again, stir 5 ~ 10min, finally add Al-RE, Al-Sr, Al-Zr master alloy, stir 10 ~ 15min, stir; After insulation 20 ~ 25min, carry out on-the-spot sample analysis, adjust each constituent content in formula range;
(3) cast and casting: teeming temperature controls at 720 DEG C ~ 740 DEG C, and casting temp controls at 700 DEG C ~ 710 DEG C, adopts continuous casting;
(4) homogenizing thermal treatment: the temperature of Homogenization Treatments is: 520 DEG C ~ 530 DEG C, the treatment time is: 4 ~ 6h; Come out of the stove after Homogenization Treatments and cool fast, speed of cooling 150 ~ 180 DEG C/min;
(5) hot extrusion: before extruding, ingot blank carries out rapid heating, adopt electromagnetic induction to heat, Heating temperature is 470 DEG C-500 DEG C, and heat-up time is 50-70min; Extrusion billet temperature in is 460 DEG C ~ 490 DEG C, and temperature out is 450 DEG C ~ 470 DEG C, and extrusion speed is 12m/min ~ 15m/min;
(6) press quenching: online air blast quenching, wind speed is 5 ~ 10m/s, and Wind Volume cools, and speed of cooling is 280 ~ 320 DEG C/min;
(7) pressurization annealing: aluminium alloy plate step 6 obtained carries out pressurization anneal, keep within 1 ~ 2 hour, carrying out pressurization annealing the temperature of 300 ~ 320 DEG C, afterwards, cool with speed of cooling 50 ~ 68 DEG C/h, when being cooled to 150 DEG C, be cooled to less than 100 DEG C with speed of cooling 100 ~ 120 DEG C/h;
(8) T5 state ageing treatment: aging temp is 190 ~ 205 DEG C, the time is 2 ~ 4h.
5. the preparation method of section bar high strength according to claim 4, high toughness Al-alloy substrate, is characterized in that: the stirring in fusing step is induction stirring.
6. the preparation method of section bar high strength according to claim 4, high toughness Al-alloy substrate, is characterized in that: the quenching described in step (6), adopts forced air cooling, the type of cooling of warm water quench and/or cold-water quench cools.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803274A (en) * | 2016-03-15 | 2016-07-27 | 江苏亿禾新材料有限公司 | Solar photovoltaic aluminum alloy and preparation method thereof |
| CN107164670A (en) * | 2017-05-13 | 2017-09-15 | 青岛辰达生物科技有限公司 | A kind of high-strength and high ductility wrought aluminium alloy and preparation method thereof |
| CN107267897A (en) * | 2017-06-22 | 2017-10-20 | 江苏宇马铝业有限公司 | A kind of processing method of aluminium alloy extrusions |
| CN116875859A (en) * | 2023-09-05 | 2023-10-13 | 小米汽车科技有限公司 | Aluminum alloy material and preparation method thereof, motor rotor aluminum alloy, induction alternating current asynchronous motor and vehicle |
| CN116904785A (en) * | 2023-09-13 | 2023-10-20 | 湖南卓创精材科技股份有限公司 | Aluminum magnesium alloy mirror surface material, preparation method and application |
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2013
- 2013-09-27 CN CN201310450374.9A patent/CN104513921A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803274A (en) * | 2016-03-15 | 2016-07-27 | 江苏亿禾新材料有限公司 | Solar photovoltaic aluminum alloy and preparation method thereof |
| CN107164670A (en) * | 2017-05-13 | 2017-09-15 | 青岛辰达生物科技有限公司 | A kind of high-strength and high ductility wrought aluminium alloy and preparation method thereof |
| CN107267897A (en) * | 2017-06-22 | 2017-10-20 | 江苏宇马铝业有限公司 | A kind of processing method of aluminium alloy extrusions |
| CN116875859A (en) * | 2023-09-05 | 2023-10-13 | 小米汽车科技有限公司 | Aluminum alloy material and preparation method thereof, motor rotor aluminum alloy, induction alternating current asynchronous motor and vehicle |
| CN116875859B (en) * | 2023-09-05 | 2023-12-05 | 小米汽车科技有限公司 | Aluminum alloy material and preparation method thereof, motor rotor aluminum alloy, induction alternating current asynchronous motor and vehicle |
| CN116904785A (en) * | 2023-09-13 | 2023-10-20 | 湖南卓创精材科技股份有限公司 | Aluminum magnesium alloy mirror surface material, preparation method and application |
| CN116904785B (en) * | 2023-09-13 | 2023-12-01 | 湖南卓创精材科技股份有限公司 | Aluminum magnesium alloy mirror surface material, preparation method and application |
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