High-elongation aluminum alloy and preparation method thereof

A high elongation, aluminum alloy technology, applied in the field of aluminum alloy materials, can solve the problem of low elongation, achieve the effect of increasing elongation, refining internal grains, and reducing harmful effects

Pending Publication Date: 2022-08-05
CHONGQING YUJIANG DIE CASTING +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The present invention intends to provide a high-elongation aluminum alloy to solve the technical problem of low elongation of existing aluminum alloy materials

Method used

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  • High-elongation aluminum alloy and preparation method thereof
  • High-elongation aluminum alloy and preparation method thereof
  • High-elongation aluminum alloy and preparation method thereof

Examples

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Embodiment 1

[0031] Table 1 shows the differences in aluminum alloy raw materials and contents between Examples 1 to 5 and Comparative Examples 1 to 3 (existing AlSi7Mg). Taking Example 1 as an example, the raw material composition and preparation process of a high elongation aluminum alloy are described.

[0032]A high elongation aluminum alloy, the raw materials of the following mass fractions: silicon (Si) 6%-8%, magnesium (Mg) 0.15%-0.3%, manganese (Mn) 0.4-1%, iron (Fe)≤0.15% , strontium (Sr) 0.01-0.03%, lanthanum-cerium (La-Ce) mixture 0.1-0.25%, the balance is aluminum and inevitable impurities; impurity weight ≤ 0.5%, including the following mass fraction of raw materials: titanium (Ti) 0.11~0.16%, calcium (Ca)≤0.0009%, phosphorus (P)≤0.04%, beryllium (Be)≤0.0001%, zinc (Zn)≤0.04%, tin (Sn)≤0.04%, lead (Pb)≤ 0.04%, nickel (Ni)≤0.04%, chromium (Cr)≤0.04%.

[0033] The composition and percentage content of each element in this embodiment specifically include: silicon 8%, magnesium ...

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Abstract

The invention relates to the technical field of aluminum alloy materials, and discloses a high-elongation aluminum alloy and a preparation method thereof.The high-elongation aluminum alloy comprises, by mass, 6%-8% of silicon, 0.15%-0.3% of magnesium, 0.4%-1% of manganese, smaller than or equal to 0.15% of iron, 0.01%-0.03% of strontium, 0.1%-0.25% of lanthanum-cerium mixture and the balance aluminum and inevitable impurities. According to the scheme, the ductility of the aluminum alloy material is improved by optimally configuring metal elements in the aluminum alloy, controlling the content of Fe in the alloy and reducing the content of brittle needle-shaped FeAl3, so that the plasticity of the alloy material is improved; and the Mg content is controlled, the Mg element is compensated through the Mn element, and the situation that the ductility of the alloy material is reduced due to the too high Mg content is avoided. In addition, different rare earth elements are added, harmful impurity elements are purified through the rare earth, grains are refined, the purpose of refined grain strengthening is achieved, meanwhile, the compound form among iron-rich multi-element metal in the die-casting aluminum alloy is effectively changed, and therefore the ductility of the alloy material is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a high elongation aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy has the characteristics of low density, high specific strength and specific stiffness, good corrosion resistance, excellent electrical and thermal conductivity, easy recycling, and good low temperature performance. It is widely used in transportation, aerospace, electronic appliances and other fields. With the increasingly fierce competition in the automotive market, aluminum alloys have low density, high strength, especially some even surpass high-quality steel, good plasticity, and can be processed into various types of materials. Corrosion and other characteristics make aluminum alloy parts one of the commonly used materials for automobiles. For example, the existing battery separators are all made of AlSi7Mg aluminum alloy, which is welded in the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/06
CPCC22C21/02C22C1/026C22C1/06Y02E60/10
Inventor 雷华均高仲明周志明解洪权杨会唐小刚杨德志杨浩坤涂坚王军军黄灿
Owner CHONGQING YUJIANG DIE CASTING
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