WO2016177095A1 - Matériau d'alliage d'aluminium et son procédé de préparation - Google Patents

Matériau d'alliage d'aluminium et son procédé de préparation Download PDF

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Publication number
WO2016177095A1
WO2016177095A1 PCT/CN2016/076070 CN2016076070W WO2016177095A1 WO 2016177095 A1 WO2016177095 A1 WO 2016177095A1 CN 2016076070 W CN2016076070 W CN 2016076070W WO 2016177095 A1 WO2016177095 A1 WO 2016177095A1
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Prior art keywords
alloy material
aluminum alloy
zinc
nickel
iron
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PCT/CN2016/076070
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English (en)
Chinese (zh)
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刘金
杨洪亮
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中兴通讯股份有限公司
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Publication of WO2016177095A1 publication Critical patent/WO2016177095A1/fr

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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
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent

Definitions

  • the application relates to, but is not limited to, the field of metal materials, and in particular to an aluminum alloy material and a preparation method thereof.
  • aluminum alloy material Because aluminum alloy material has the characteristics of good processing performance, light specific gravity, beautiful surface, excellent corrosion resistance, high production efficiency and low cost, it is the preferred material for mass production. Therefore, aluminum alloy materials have obtained a large number of applications in many industries such as automobiles, electronics, communications, and aerospace. Although there are many types of aluminum alloys, there are fewer types of aluminum alloys used for die casting, especially those with high thermal conductivity. At present, the thermal conductivity of the current die-cast aluminum alloy such as ADC12 in the as-cast state is about (96-110) W / (m ⁇ K), and AlSi12 is about 121 W / (m ⁇ K) in the as-cast state.
  • ADC1 belongs to The die-casting aluminum alloy with castability deviation has a thermal conductivity of about 142 W/(m ⁇ K). It is already a material with high thermal conductivity in die-cast aluminum alloy, but it is pure relative to the thermal conductivity of 230 W/(m ⁇ K). There is still a big gap between aluminum and deformed aluminum alloy 6063 with a thermal conductivity of up to 192 W/(m ⁇ K). Moreover, most of the die-casting parts have many defects such as internal pores, and heat treatment cannot solve the problem.
  • NIKKEI MC ALUMINIUM has developed Al-2Ni-Fe die-casting aluminum alloys with a thermal conductivity of 190 W/(m ⁇ K in the as-cast state. ), but the casting performance is more than 35% lower than ADC12, and its hardness is low and its strength is low.
  • the embodiment of the invention provides an aluminum alloy material which has good casting performance and mechanical properties and high thermal conductivity.
  • Embodiments of the present invention provide an aluminum alloy material.
  • An aluminum alloy material includes silicon, iron, zinc, nickel, aluminum and impurities, and the mass percentages of silicon, iron, zinc and nickel are respectively 2-4% of silicon, 0.01-0.8% of iron, 0.01-3% of zinc and 0.01 of nickel. ⁇ 3.5%, the impurity mass percentage does not exceed 0.3%, and the rest is aluminum;
  • the aluminum alloy material further comprises at least one of cerium, zirconium and vanadium;
  • the mass percentage of cerium, zirconium and vanadium is 0.001 to 0.2%, zirconium 0.001 to 0.2%, and vanadium 0.001 to 0.2%.
  • an embodiment of the present invention further provides a method for preparing the above aluminum alloy material, comprising the following steps: alloy melting and casting molding;
  • At least one of Al-Sr, Al-V, and Al-Zr intermediate alloys is added to the alloy when it is melted.
  • the utility model has the advantages that the aluminum alloy provided by the technical solution of the present application has good casting performance and can be used for a thin-walled shell with a complicated die-casting structure, and the heat-transducing rate of the die-casting part produced by the method is higher than 196 W/(m ⁇ K under normal temperature conditions. ), the tensile strength is not less than 180MPa, the thermal conductivity is excellent, and the mechanical properties are more prominent.
  • FIG. 1 Three aluminum alloy forming ratios of the embodiments of the present invention are provided in FIG. 1
  • the composition of the aluminum alloy material in the first embodiment is 2.09 wt% silicon, 0.06 wt% iron, 2.96 wt% nickel, 1.53 wt% zinc, 0.05 wt% bismuth, the balance being aluminum and impurities, and the impurity mass percentage does not exceed 0.3%.
  • Step 1 According to 2.09wt% silicon, 0.06wt% iron, 2.96wt% nickel, 1.53wt% zinc, 0.05wt% bismuth, the balance is aluminum, weigh the ingredients according to the total weight of 99.5Kg, and prepare 0.5 Kg of Al-10Sr master alloy.
  • Step 2 Preheat the crucible. When the temperature reaches 300 °C or higher, add aluminum, zinc, silicon, and iron to melt. When the temperature rises above 780 °C, add nickel and niobium, and keep the temperature within 680-850 °C. After the feed was melted, the Al-10Sr master alloy was added, and after it was completely melted, the solution temperature was adjusted to 700 ⁇ 10 ° C, and refined with a general-purpose aluminum alloy refining agent for 10 min. After refining, remove the solvent and scum from the liquid surface. Then let stand for 5 min to make the inclusions fully float or sink, and slag.
  • Step 3 After adjusting the solution to 680-720 ° C, the aluminum alloy melt is poured into a high-pressure die-casting machine for die-casting production.
  • the composition of the aluminum alloy material in the second embodiment is 3.08 wt% silicon, 0.07 wt% iron, 2.58 wt% nickel, 1.71 wt% zinc, 0.05 wt% zirconium, and the balance is aluminum and impurities, and the impurity mass percentage does not exceed 0.3%.
  • Step 1 According to 3.08wt% silicon, 0.07wt% iron, 2.58wt% nickel, 1.71wt% zinc, 0.05wt% zirconium, the balance is aluminum and impurities, the impurity mass percentage does not exceed 0.3%, according to the total Weighing 99Kg of ingredients, while preparing 1Kg of Al-5Zr master alloy.
  • Step 2 Preheat the crucible. When the temperature reaches 300 °C or higher, add aluminum, zinc, silicon and iron to melt. When the temperature rises above 780 °C, add nickel and zirconium and keep the temperature within 680-850 °C. After the feed was melted, the Al-5Zr master alloy was added, and after the whole was melted, the temperature of the solution was adjusted to 700 ⁇ 10 ° C, and argon gas was refined by GBF (Gas Bubbling Filtration) for 8 min. After refining, remove the solvent and scum from the liquid surface. Then let stand for 10 min to make the inclusions fully float or sink, and slag.
  • GBF Gas Bubbling Filtration
  • Step 3 After adjusting the solution to 680-720 ° C, the aluminum alloy melt is subjected to semi-solid pulping treatment and then poured into a die-casting machine for die-casting production.
  • composition of the aluminum alloy material in the third embodiment is 3.79 wt% silicon, 0.08 wt% iron, 1.21 wt% nickel, 2.50 wt% zinc, 0.11 wt% vanadium, the balance being aluminum and impurities, wherein the impurity quality The percentage does not exceed 0.3%.
  • Step 1 According to 3.79 wt% silicon, 0.08 wt% iron, 1.21 wt% nickel, 2.50 wt% zinc, 0.11 wt% vanadium, the balance being aluminum and impurities, wherein the impurity mass percentage does not exceed 0.3%, The ingredients were weighed at a total weight of 100 Kg while preparing a 0.2 Kg Al-55V master alloy.
  • Step 2 preheating ⁇ , when the temperature reaches 300 ° C or more, aluminum, zinc, silicon, iron, vanadium, Al-55V intermediate alloy is sequentially added for melting. When the temperature rises above 780 ° C, nickel, manganese and copper are added. After all of it was melted, the temperature of the solution was adjusted to 700 ⁇ 10 ° C, and nitrogen gas refining was carried out for 12 min by GBF (bubble filtration). After refining, remove the solvent and scum from the liquid surface. Then, it was allowed to stand for 12 minutes to make the inclusions fully float or sink, and slag.
  • GBF bubble filtration
  • Step 3 After adjusting the solution to 680-700 ° C, the aluminum alloy melt is poured into a high-pressure die-casting machine for die-casting production.
  • Figure 2 is a graph showing the performance parameters of the aluminum alloy materials prepared in the above three examples.
  • the performance parameters of the aluminum alloy material in the first embodiment are tensile strength of 175.7 MPa, elongation after fracture of 4.2%, and thermal conductivity of 209.3 W/(m ⁇ K).
  • the performance parameters of the aluminum alloy material in the second embodiment are tensile strength 193.9 MPa, elongation after fracture 3.9%, and thermal conductivity 206.5 W/(m ⁇ K).
  • the performance parameters of the aluminum alloy material in the third embodiment are tensile strength 203.2 MPa, elongation after fracture 3.8%, and thermal conductivity 196.8 W/(m ⁇ K).
  • the embodiment of the invention provides an aluminum alloy material and a preparation method thereof.
  • the aluminum alloy material has good casting performance and can be used for a thin-walled shell with a complicated die-casting structure, and the heat-transfer rate of the die-casting part produced under normal temperature conditions It is more than 196W/(m ⁇ K), the tensile strength is not less than 180MPa, the thermal conductivity is excellent, and the mechanical properties are more prominent.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)

Abstract

L'invention concerne un matériau d'alliage d'aluminium et son procédé de préparation. Le matériau d'alliage d'aluminium comprend du silicium, du fer, du zinc, du nickel, de l'aluminium et des impuretés, les pourcentages massiques de silicium, de fer, de zinc et de nickel étant respectivement de 2 % à 4 % de silicium, 0,01 % à 0,8 % de fer, 0,01 % à 3 % de zinc et 0,01 % à 3,5 % de nickel, le pourcentage massique des impuretés n'étant pas supérieur à 0,3 % et le reste étant constitué d'aluminium. Le procédé comprend des étapes de fusion, de coulée et de moulage de l'alliage, un ou plusieurs alliages intermédiaires, choisis parmi Al-Sr, Al-V et Al-Zr, étant ajouté pendant l'étape de fusion de l'alliage. Le matériau d'alliage d'aluminium et son procédé de préparation permettent de résoudre les problèmes de faible conductivité thermique et faibles propriétés mécaniques de matériaux d'alliage d'aluminium connus dans l'état de la technique.
PCT/CN2016/076070 2015-10-10 2016-03-10 Matériau d'alliage d'aluminium et son procédé de préparation WO2016177095A1 (fr)

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CN201510655296.5A CN106566959B (zh) 2015-10-10 2015-10-10 一种铝合金材料及其制备方法
CN201510655296.5 2015-10-10

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Cited By (1)

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CN108050853A (zh) * 2017-12-14 2018-05-18 沈阳市东盛金属制品有限公司 一种铸造201z5铝合金的方法和熔炼炉

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CN108048701A (zh) * 2018-01-10 2018-05-18 深圳市金立通信设备有限公司 一种铝合金材料、手机壳及其制作方法
CN112176234B (zh) * 2019-07-05 2022-03-18 比亚迪股份有限公司 铝合金及其制备方法、铝合金结构件和电子设备
CN113355565B (zh) * 2021-06-02 2022-04-15 山东宏和轻量化科技有限公司 一种适于挤压铸造的可耐高温焊接的铝合金及其制备方法

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JPH09184037A (ja) * 1995-12-27 1997-07-15 Fuji Corp:Kk ブレーキディスク用アルミニウム合金複合材
CN103540811A (zh) * 2013-10-17 2014-01-29 常熟市良益金属材料有限公司 一种铝合金

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JPH06228692A (ja) * 1992-10-15 1994-08-16 Furukawa Alum Co Ltd アルミニウム合金フィン材およびアルミニウム合金製熱交換器の製造方法
JPH09184037A (ja) * 1995-12-27 1997-07-15 Fuji Corp:Kk ブレーキディスク用アルミニウム合金複合材
CN103540811A (zh) * 2013-10-17 2014-01-29 常熟市良益金属材料有限公司 一种铝合金

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Publication number Priority date Publication date Assignee Title
CN108050853A (zh) * 2017-12-14 2018-05-18 沈阳市东盛金属制品有限公司 一种铸造201z5铝合金的方法和熔炼炉

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