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
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[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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