WO2023103787A1 - Matériau d'alliage d'aluminium, procédé de préparation pour celui-ci et application de celui-ci - Google Patents

Matériau d'alliage d'aluminium, procédé de préparation pour celui-ci et application de celui-ci Download PDF

Info

Publication number
WO2023103787A1
WO2023103787A1 PCT/CN2022/133871 CN2022133871W WO2023103787A1 WO 2023103787 A1 WO2023103787 A1 WO 2023103787A1 CN 2022133871 W CN2022133871 W CN 2022133871W WO 2023103787 A1 WO2023103787 A1 WO 2023103787A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum alloy
alloy material
particles
electron microscope
scanning electron
Prior art date
Application number
PCT/CN2022/133871
Other languages
English (en)
Chinese (zh)
Inventor
丁小理
罗杰
刘志成
周武军
李建湘
李信
Original Assignee
广东和胜工业铝材股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东和胜工业铝材股份有限公司 filed Critical 广东和胜工业铝材股份有限公司
Publication of WO2023103787A1 publication Critical patent/WO2023103787A1/fr

Links

Classifications

    • 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
    • C22C1/10—Alloys containing non-metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • 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

Definitions

  • the invention belongs to the technical field of aluminum alloys, and in particular relates to an aluminum alloy material and its preparation method and application.
  • Aluminum alloy has many characteristics such as light specific gravity, high specific strength, good heat dissipation, easy processing, excellent anodic oxidation decoration effect, and recyclable reuse, so it is widely used in the manufacture of various commodities.
  • As a commonly used material for 3C structural parts in order to give more room for mobile phone internal structure designers, and due to the lightweight requirements of mobile phones, it is required to further increase the yield strength of materials in order to meet the structural strength test requirements of complete mobile phone parts. At the same time, customers are also very concerned about the appearance of mobile phones.
  • the surface treatment is mostly high-brightness anodizing, which can be dyed in various colors, and the oxide film is transparent and shiny. After oxidation, the finished product needs to be tested for salt spray and acid-base reliability, and there must be no film bursting or cracking.
  • the main strengthening phases Mg 2 Si, free Si, and CuAl 2 in 6-series alloys have a positive effect on the strength when dispersed and precipitated, and when the amount exceeds a certain amount, the color and permeability of the oxide film will be seriously deteriorated;
  • the temperature range between its solvus and solidus is about 20°C.
  • the temperature range between the solvus line and the solidus line is about 10°C, and it is extremely easy to appear over-burned structure or insufficient solid solution during the production process; (3)
  • the hardness of the over-burned product is high, because The flow rate is different from that of aluminum, and it will be elongated, forming strip defects in the extruded material. These impurity phases dissolve and fall off during the oxidation process, leaving pits at the falling position, visually presenting black line-like defects, resulting in anodic effects that cannot meet customer needs.
  • Large particles with insufficient solid solution (larger than 1 ⁇ m) have a large difference in electrochemical performance from the substrate.
  • the 6-series alloy only relies on the control of alloy content, and its yield strength is up to 400MPa. If higher strength is required, and it can meet the needs of 3C products with small stress deformation and bright and transparent anodizing effect under the condition of multi-process and large-scale processing of 3C products, it must be completed through innovation of alloy composition and process conditions.
  • the 7-series alloy can easily achieve a strength of 500MPa, or even more than 600MPA, due to the high composition of the 7-series alloy, anodic oxidation is prone to cracking defects, so it cannot be used on high-brightness anodized mobile phone casings. Therefore, it is necessary to develop aluminum alloy materials with a yield strength of more than 450MPa and suitable for high-brightness anodic oxidation.
  • This type of product can be widely used in 3C products that require high material structural strength, low material residual stress and good surface treatment performance. 5G and future 6G requirements.
  • the present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. For this reason, the invention provides an aluminum alloy material, the yield strength of the aluminum alloy material is greater than 450MPa and the surface treatment performance is good.
  • the present invention also provides a preparation method of the above-mentioned aluminum alloy material.
  • the present invention also provides the application of the above-mentioned aluminum alloy material.
  • the first aspect of the present invention provides an aluminum alloy material prepared from the following components in mass percentage.
  • Si 0.30% to 0.80%.
  • the balance is Al.
  • the aluminum alloy material contains free Si, the mass percentage of the free Si is 0.06-0.35%, and the calculation method of the free Si is: Si%-Mg% ⁇ 0.578.
  • Si exists in the form of Mg 2 Si and free Si.
  • Si and Mg form Mg 2 Si
  • Mg: Si composition content 24.3 ⁇ 2/28.09, that is, when the Si content is 1%, the Mg required to form Mg 2 Si is 1.73%, therefore, the calculation of free Si
  • the aluminum alloy material of the present invention through the design of the alloy composition, enables the material to have good surface treatment and performance while the yield strength is greater than 450 MPa.
  • the aluminum alloy material of the present invention has small stress deformation after being processed by a numerically controlled lathe. Taking the finished product of the middle frame of a straight mobile phone with a length of 170mm x width 80mm x thickness 7mm as an example, the flatness can be controlled within 0.15.
  • the aluminum alloy material of the present invention has no trailing lines when the aluminum alloy is mechanically polished, the oxide film is transparent, and the high-quality anodic oxidation effect of high brightness can be realized.
  • Si and Mg elements are the main alloy elements forming the strengthening phase, and the strength of the material is controlled by the formed Mg 2 Si, and the maximum solid solubility of Mg 2 Si in the aluminum matrix is 1.85%.
  • the total amount of Mg 2 Si is closer to 1.85%, its solid solution temperature and solidus temperature are very close, which is difficult to control in extrusion industrial production. If the temperature is too low, the solid solution is insufficient, and Mg 2 Si cannot function well. If the temperature is too high and exceeds the solidus temperature of the material, cracking will occur during extrusion.
  • Si is controlled at 0.3-0.8%, and Mg is controlled at 0.35-0.90%, so the total amount of Mg 2 Si can be controlled to be less than 1.494%, which effectively ensures the mass production of the process window.
  • a certain amount of free Si is set in the material, and the total amount of free Si is controlled at 0.09-0.35%, which can be used as the nucleation core of the strengthening precipitation phase during the aging treatment, so that the strengthening precipitation phase is finely dispersed and evenly distributed. If the total amount of free Si exceeds 0.35%, the elongation of the extruded profile will be seriously reduced, resulting in cracking in subsequent cold working and low elongation of the final product.
  • the Cu content is controlled at 0.90-2.2%, and an appropriate amount of Cu is added to form a CuAl 2 phase, so as to significantly improve the age hardening performance of the material.
  • the solid solubility of Fe in aluminum alloy is low, and Fe is an impurity element of the raw material, which inevitably exists.
  • the large granular and long Fe phase affects the anodic oxidation effect.
  • an appropriate amount of Mn is added to effectively promote the transformation of the needle-shaped Fe-containing phase into the spherical Fe-phase.
  • the Fe control is ⁇ 0.09%, and the Mn content is controlled at 0.05%-0.15%.
  • the spheroidization rate of Fe phase is improved.
  • B as an impurity element in the raw material aluminum ingot, inevitably exists.
  • an appropriate amount of Ti-B refiner is added during the alloy casting process.
  • the B content exceeds a certain range, it is very easy to form TiB particle agglomeration, as a hard phase, it is easy to embed into the softer aluminum alloy matrix during subsequent mechanical polishing of the aluminum alloy profile, resulting in the appearance of lines.
  • Ti is controlled at 0.0020-0.0150%, and B is controlled at ⁇ 0.0050%.
  • the content of boron element is ⁇ 0.0050%
  • the content of iron element is ⁇ 0.09%
  • the content of a single impurity element is ⁇ 0.03%
  • the total content of impurity elements is ⁇ 0.15%.
  • Mg 2 Si particles are precipitated at the nanoscale to the greatest extent. Under the 100 times field of view of the scanning electron microscope, no white Mg 2 Si particles with a length exceeding 5 ⁇ m appear; and no more than 5 Mg 2 Si particles with a length of 2-5 ⁇ m.
  • Mg 2 Si belongs to strengthening phase particles, and its constituent elements are Mg and Si.
  • the number exceeding 2 ⁇ m is no more than 5.
  • the length of the Fe phase particles is ⁇ 7 ⁇ m, and the number of Fe phase particles exceeding 3 ⁇ m is no more than 10.
  • Fe phase particles belong to insoluble impurity particles.
  • the length of the TiB phase particles is ⁇ 3 ⁇ m, and the number of particles exceeding 2 ⁇ m under the 100x field of view of the scanning electron microscope is no more than 2.
  • the main component of TiB phase particles is TiB.
  • the yield strength of the aluminum alloy material is ⁇ 450 MPa.
  • a second aspect of the present invention provides a method for preparing the above-mentioned aluminum alloy material, including the following steps.
  • the melting temperature of the aluminum ingot is 740°C-780°C.
  • step S2 after adding a refining agent for refining, argon gas is introduced to refine the aluminum alloy liquid, the slag is removed, and the aluminum alloy liquid II is obtained.
  • step S3 the online grain refinement can be realized by adding a conventional grain refiner.
  • step S4 after the aluminum alloy liquid III is filtered, the aluminum alloy liquid IV is obtained by degassing through the double box of the launder, 80ppi ceramic filter plate + a tubular filter above RC level , and then cast and homogenize the aluminum alloy liquid IV.
  • the casting temperature is 700°C to 730°C.
  • the homogenization treatment method is as follows: first heat the material to 480°C-500°C, keep it warm for 2h-6h, continue to raise the temperature to 550°C-575°C, and keep it warm for 12h-24h.
  • the method further includes, after step S4, performing a molding treatment on the material.
  • the method of forming treatment is.
  • the temperature of the cast rod on the machine is controlled at 520°C to 560°C, the extrusion ratio is greater than 20, and the cast rod is extruded.
  • the temperature at the extrusion outlet is controlled at 530°C to 570°C, and quenched and cooled by passing through water within 60s to obtain an extruded profile.
  • the deformation of the cold deformation processing area is controlled at 4% to 15%.
  • the calculation method of the deformation of the cold processing area is: (cross-sectional area before cold processing-cross-sectional area after cold processing)/cross-sectional area before cold processing.
  • Aluminum alloy can improve product strength through cold work hardening.
  • a certain amount of cold working is applied to improve the strength and ensure the anodic oxidation effect.
  • the cold deformation processing in the preparation method includes but is not limited to drawing, rolling, forging and other modes of deformation processing at normal temperature.
  • the cold deformation processing in the preparation method includes but is not limited to drawing, rolling, forging and other modes of deformation processing at normal temperature.
  • Fig. 1 is the scanning electron microscope detection result of the microscopic morphology of the aluminum alloy material prepared in Example 1.
  • Fig. 2 is the scanning electron microscope detection result of the microscopic morphology of the aluminum alloy material prepared in Comparative Example 1.
  • an aluminum alloy material is prepared from the following components.
  • Si 0.65%, Mg: 0.7%, Cu: 1.8%, Mn: 0.12%, Ti: 0.012%, B: 0.004%, Fe: 0.08%, and the balance is Al.
  • the content of a single impurity element is ⁇ 0.03%, and the total content of impurity elements is ⁇ 0.15%.
  • the specific preparation method is as follows.
  • W -713-3 Refining Agent or Pyrique's PROMAG Ri refining agent can be used, which belongs to sodium salt and potassium salt refining agent.
  • the aluminum alloy liquid III is degassed through the double box of the launder, and the 80ppi ceramic filter plate + the tubular filter above the RC level is obtained to obtain the aluminum alloy liquid IV.
  • the aluminum alloy liquid IV was cast at 710° C. to obtain aluminum alloy cast rods.
  • the aluminum alloy casting rod was homogenized, and the specific process was: heating up to 480° C. for 6 hours and then continuing to heat up to 570° C. for 16 hours to obtain the aluminum alloy casting rod A.
  • the aluminum alloy cast rod A is heated, and the temperature is kept at 530-570° C. for 1 hour.
  • the temperature of the cast rod is controlled at 540-550°C, the extrusion ratio is 40, and the cast rod is extruded.
  • the extrusion outlet temperature is controlled at 550-570°C, and quenched and cooled through water within 60 seconds to obtain an extruded profile.
  • the heating of the cast rod is a process of gradually increasing the temperature.
  • the length of the material extruded by each cast rod is about 50m. Because of the frictional heating, the temperature of the head and tail actually has a process of change, so the above The temperature is set as a temperature interval.
  • the deformation of the cold deformation processing area is controlled at 13% to 15%.
  • Example 2 an aluminum alloy material is prepared, the difference from Example 1 is that the magnesium content is 0.86%.
  • Example 2 an aluminum alloy material is prepared, the difference from Example 1 is that the silicon content is 0.74%.
  • Example 1 an aluminum alloy material is prepared, the difference from Example 1 is that the content of copper is 0.9%.
  • an aluminum alloy material is prepared, which differs from the embodiment 1 in that the content of manganese is 0.05%.
  • an aluminum alloy material is prepared, which differs from that in Embodiment 1 in that the content of boron is 0.001%.
  • an aluminum alloy material is prepared from the following components.
  • Si 0.65%, Mg: 0.7%, Cu: 1.8%, Mn: 0.12%, Ti: 0.012%, B: 0.004%, Fe: 0.08%, and the balance is Al.
  • the content of a single impurity element is ⁇ 0.03%, and the total content of impurity elements is ⁇ 0.15%.
  • the specific preparation method is as follows.
  • the aluminum alloy liquid III is degassed through the double box of the launder, and the 80ppi ceramic filter plate + the tubular filter above the RC level is obtained to obtain the aluminum alloy liquid IV.
  • the aluminum alloy liquid IV was cast at 710° C. to obtain aluminum alloy cast rods.
  • the aluminum alloy casting rod was homogenized, and the specific process was: heating up to 480° C. for 6 hours and then continuing to heat up to 570° C. for 16 hours to obtain the aluminum alloy casting rod A.
  • the aluminum alloy cast rod A is heated, and the temperature is kept at 530-570° C. for 1 hour.
  • the temperature of the cast rod on the machine is controlled at 520-530°C, the extrusion ratio is 40, and the cast rod is extruded.
  • the extrusion outlet temperature is controlled at 540-560°C, and quenched and cooled through water within 60 seconds to obtain an extruded profile.
  • the deformation of the cold deformation processing area is controlled at 13% to 15%.
  • This example prepares an aluminum alloy material.
  • the difference from Example 1 is that during the preparation process, during the preheating treatment of the profile, the extruded material is preheated and heated to 160° C. for 2 hours.
  • This example prepares an aluminum alloy material, and the difference from Example 1 lies in that during the preparation process, the profile is cold deformed, and the deformation of the cold deformed area is controlled at 4% to 5.5%.
  • an aluminum alloy material is prepared.
  • the difference from Example 1 is that the aluminum alloy material is prepared from the following components.
  • Si 0.3%, Mg: 0.35%, Cu: 2.2%, Mn: 0.12%, Ti: 0.012%, B: 0.004%, Fe: 0.08%, and the balance is Al.
  • the content of a single impurity element is ⁇ 0.03%, and the total content of impurity elements is ⁇ 0.15%.
  • Example 2 an aluminum alloy material is prepared, the difference from Example 1 is that the silicon content is 0.25%.
  • Example 2 an aluminum alloy material is prepared, the difference from Example 1 is that the content of Mg is 0.30%.
  • the content of free Si exceeds the range of 0.09-0.35% limited by the present invention.
  • Example 1 an aluminum alloy material is prepared, the difference from Example 1 is that the content of copper is 0.8%.
  • Example 2 an aluminum alloy material is prepared, the difference from Example 1 is that the content of boron is 0.0.006%.
  • Example 2 an aluminum alloy material is prepared, one of the differences from Example 1 is that the content of titanium is 0.02%.
  • the second difference is that among the Al-Ti-B refiners, 90% of TiB 2 single particle diameters are less than 3 ⁇ m, and some of them are agglomerated.
  • Example 2 an aluminum alloy material is prepared.
  • the difference from Example 1 is that the aluminum alloy cast rod is directly heated to 570° C. for 16 hours during homogenization treatment.
  • Example 2 an aluminum alloy material is prepared.
  • the temperature of the casting rod on the machine is controlled at 500-520° C., and the extrusion ratio is 40, and the casting rod is extruded.
  • the extrusion outlet temperature is controlled at 520-540°C, and quenched and cooled through water within 60 seconds to obtain an extruded profile.
  • Example 1 an aluminum alloy material is prepared, and the difference from Example 1 is that during the cold deformation process of the profile, the deformation amount of the cold deformation processing area is controlled at 16%-17%.
  • Example 2 an aluminum alloy material is prepared.
  • the difference from Example 1 is that during the artificial aging treatment of the profile, the cold-processed aluminum alloy profile is heated to 180° C. for 2 hours.
  • Example 1 an aluminum alloy material is prepared, and the difference from Example 1 is that no preheating treatment is performed during the profile extrusion process.
  • the aluminum alloy materials prepared in the examples and the comparative examples were polished, and it was observed whether there was a trailing line defect.
  • the aluminum alloy materials prepared in the examples and the comparative examples were machined with a numerical control machine tool. Specifically, the materials were processed into a straight mobile phone middle frame with a length of 170mm x width 80mm x thickness 7mm, and the flatness was tested.
  • the anodic oxidation surface treatment was carried out on the middle frame of the straight mobile phone, and the appearance and performance of the oxide film were observed.
  • the aluminum alloy material prepared in Comparative Example 2 cracked at the edge during the cold working process.
  • the microstructure and morphology of the aluminum alloy materials prepared in the examples and comparative examples were observed with a scanning electron microscope. The specific situation is.
  • Example 1 The maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, there are 0 particles exceeding 2 ⁇ m.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • the morphology of the particles prepared in Example 1 is shown in Figure 1.
  • Example 2 The maximum length of Mg 2 Si particles is 3 ⁇ m, and under the 100 times field of view of the scanning electron microscope, no more than 2 particles exceed 2 ⁇ m.
  • the maximum length of Fe phase particles is 4 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 3 The maximum length of Mg 2 Si particles is 1.8 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 4 The maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 2 ⁇ m is 0.
  • the maximum length of Fe phase particles is 4 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 5 The maximum length of Mg 2 Si particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 6 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m does not exceed 7.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 6 The maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 2 ⁇ m is 0.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the TiB phase, Ti particles and B particles could not be found.
  • Example 7 The maximum length of Mg 2 Si particles is 3 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the maximum number of particles exceeding 2 ⁇ m is 3.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 8 The maximum length of MgSi particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 2 ⁇ m is 0.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 9 The maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 2 ⁇ m is 0.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Example 10 Mg 2 Si particles cannot be observed under a scanning electron microscope with a field of view of 100 times.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Comparative Example 1 No Mg 2 Si particles could be observed under the 100 ⁇ field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • the morphology of the particles prepared in Comparative Example 1 is shown in FIG. 2 .
  • Comparative Example 2 No Mg 2 Si particles could be observed under the 100 ⁇ field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Comparative example 3 the maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, there are 0 particles exceeding 2 ⁇ m.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of the TiB phase and Ti particles does not exceed 1 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Comparative example 4 the maximum length of Mg 2 Si particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 4 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Comparative example 5 the maximum length of Mg 2 Si particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 5 ⁇ m, and the number of them exceeds 2 ⁇ m under the 100 times field of view of the scanning electron microscope.
  • Comparative example 6 the maximum length of Mg 2 Si particles is 2 ⁇ m, and under the 100 times field of view of the scanning electron microscope, there are 0 particles exceeding 2 ⁇ m.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 1 ⁇ m, and the number of them exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • Comparative example 7 the maximum length of Mg 2 Si particles is 7 ⁇ m, and under the 100 times field of view of the scanning electron microscope, there are 20 particles exceeding 2 ⁇ m.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 1 ⁇ m, and the number of them exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • Comparative Example 8 The maximum length of MgSi particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 1 ⁇ m, and the number of them exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • Comparative Example 9 The maximum length of Mg 2 Si particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 1 ⁇ m, and the number of them exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • Comparative Example 10 The maximum length of Mg 2 Si particles is 2 ⁇ m, and the number of particles exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.
  • the maximum length of Fe phase particles is 5 ⁇ m, and under the 100 times field of view of the scanning electron microscope, the number of particles exceeding 3 ⁇ m shall not exceed 3.
  • the maximum length of TiB phase and Ti particles is 1 ⁇ m, and the number of them exceeding 2 ⁇ m is 0 under the 100 times field of view of the scanning electron microscope.

Abstract

La présente invention concerne un matériau d'alliage d'aluminium, un procédé de préparation pour celui-ci et une application de celui-ci. Selon le matériau d'alliage d'aluminium de la présente invention, au moyen d'une conception de constituant d'alliage, le matériau peut avoir de bonnes performances de traitement de surface tandis que la limite d'élasticité est supérieure à 450 MPa. Le matériau d'alliage d'aluminium de la présente invention présente une faible déformation sous contrainte après avoir été usiné par un tour à commande numérique. En prenant un produit fini d'un cadre intermédiaire d'un téléphone en barre ayant la longueur de 170 mm, la largeur de 80 mm et l'épaisseur de 7 mm à titre d'exemple, la planéité peut être maîtrisée dans les 0,15. Selon le matériau d'alliage d'aluminium de la présente invention, l'alliage d'aluminium est mécaniquement poli sans lignes de traînée, et un film d'oxydation est transparent, de telle sorte qu'une brillance élevée peut être obtenue, et l'effet d'oxydation anodique est bon. La présente invention concerne en outre un procédé de préparation pour le matériau d'alliage d'aluminium et une application de celui-ci dans la préparation d'un boîtier de produit 3C.
PCT/CN2022/133871 2021-12-06 2022-11-24 Matériau d'alliage d'aluminium, procédé de préparation pour celui-ci et application de celui-ci WO2023103787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111476570.4A CN114351019B (zh) 2021-12-06 2021-12-06 一种铝合金材料及其制备方法和应用
CN202111476570.4 2021-12-06

Publications (1)

Publication Number Publication Date
WO2023103787A1 true WO2023103787A1 (fr) 2023-06-15

Family

ID=81098379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/133871 WO2023103787A1 (fr) 2021-12-06 2022-11-24 Matériau d'alliage d'aluminium, procédé de préparation pour celui-ci et application de celui-ci

Country Status (2)

Country Link
CN (1) CN114351019B (fr)
WO (1) WO2023103787A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114351019B (zh) * 2021-12-06 2023-02-03 广东和胜工业铝材股份有限公司 一种铝合金材料及其制备方法和应用

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010019777A1 (en) * 2000-02-04 2001-09-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Chamber material made of Al alloy and heater block
CN102703773A (zh) * 2012-06-11 2012-10-03 东莞市闻誉实业有限公司 铝合金板及其生产工艺
CN107385290A (zh) * 2017-08-10 2017-11-24 广东和胜工业铝材股份有限公司 一种具有优异氧化效果的高强度铝合金及其制备方法和应用
CN110358951A (zh) * 2019-08-06 2019-10-22 广东和胜工业铝材股份有限公司 一种高导高强铝合金及其制备方法
CN111118353A (zh) * 2020-01-17 2020-05-08 广东和胜工业铝材股份有限公司 一种铝合金及制造方法
CN114351019A (zh) * 2021-12-06 2022-04-15 广东和胜工业铝材股份有限公司 一种铝合金材料及其制备方法和应用

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010019777A1 (en) * 2000-02-04 2001-09-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Chamber material made of Al alloy and heater block
CN102703773A (zh) * 2012-06-11 2012-10-03 东莞市闻誉实业有限公司 铝合金板及其生产工艺
CN107385290A (zh) * 2017-08-10 2017-11-24 广东和胜工业铝材股份有限公司 一种具有优异氧化效果的高强度铝合金及其制备方法和应用
CN110358951A (zh) * 2019-08-06 2019-10-22 广东和胜工业铝材股份有限公司 一种高导高强铝合金及其制备方法
CN111118353A (zh) * 2020-01-17 2020-05-08 广东和胜工业铝材股份有限公司 一种铝合金及制造方法
CN114351019A (zh) * 2021-12-06 2022-04-15 广东和胜工业铝材股份有限公司 一种铝合金材料及其制备方法和应用

Also Published As

Publication number Publication date
CN114351019B (zh) 2023-02-03
CN114351019A (zh) 2022-04-15

Similar Documents

Publication Publication Date Title
CN107385290B (zh) 一种具有优异氧化效果的高强度铝合金及其制备方法和应用
CN109402466B (zh) Al-Mg-Si-Cu-Mn合金及其制备方法
CN110042332B (zh) 一种铝合金及其制备方法
CN102796925B (zh) 一种压力铸造用的高强韧压铸铝合金
US9512510B2 (en) High-strength aluminum alloy and process for producing same
CN111118353A (zh) 一种铝合金及制造方法
WO2020113944A1 (fr) Alliage d'aluminium à haute résistance pour pièces externes de produit électronique et procédé de préparation d'alliage d'aluminium à haute résistance
WO2015127805A1 (fr) Alliage d'aluminium durci par cuisson à température élevée pour carrosserie d'automobile et procédé de préparation de celui-ci
CN102796922B (zh) 用连续铸轧法生产的电容器专用合金负极箔及制备方法
WO2015025706A1 (fr) Alliage d'aluminium de haute résistance et son procédé de production
WO2012176345A1 (fr) Matériau d'alliage d'aluminium à haute résistance et procédé de production de ce dernier
JP4498180B2 (ja) Ｚｒを含むＡｌ−Ｚｎ−Ｍｇ−Ｃｕ系アルミニウム合金及びその製造方法
WO2018072052A1 (fr) Alliage de zinc déformable apte à être frappé à froid et son application
CN114107752B (zh) 一种阳极氧化用高Cr铝合金板带材及其制备方法
WO2017107511A1 (fr) Alliage d'aluminium et son procédé de fabrication
CN103205608A (zh) 用于铝蜂窝板芯的稀土铝锰合金箔及其制备方法
WO2023103787A1 (fr) Matériau d'alliage d'aluminium, procédé de préparation pour celui-ci et application de celui-ci
CN102851551A (zh) 一种铝合金蒸发器内壁薄板及其连续铸轧生产工艺
CN110373583A (zh) 一种优质氧化效果高强铝合金及其制备方法
JP2007186747A (ja) 高温高速成形用アルミニウム合金材及びその製造方法、並びにアルミニウム合金成形品の製造方法
CN112760532A (zh) 一种装卸转运平台用铝合金型材及其制备方法
WO2019023818A1 (fr) Matériau d'alliage de zinc déformable facilement façonnable à froid, procédé de préparation s'y rapportant et application correspondante
CN109434319A (zh) 一种铝合金用tig焊丝及其制备方法
CN114351016B (zh) 一种粗晶铝合金及其制备方法和应用
CN115927930A (zh) 一种高强度铝合金型材加工工艺

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22903210

Country of ref document: EP

Kind code of ref document: A1