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A technology for aluminum alloy ingots and intermediate alloys, applied in the field of aluminum alloy ingots, can solve the problems of low density of aluminum alloys, prone to cracks and corrosion, and high strength of aluminum alloys, and achieve excellent corrosion resistance, improve the appearance of castings, and high-temperature mechanical properties Good results
Active Publication Date: 2016-11-09
肇庆南都再生铝业有限公司
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[0004] The density of aluminum alloy is low, but its strength is relatively high, which is close to or exceeds that of high-quality steel, and its plasticity is good. Therefore, aluminum alloys are mostly used in casting products. The existing aluminum alloys are prone to cracks and corrosion
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Embodiment 1
[0017] An aluminum alloy ingot, comprising the following components in weight percentage: Si: 7.2%, Cu: 1.2%, Mg: 0.1%, Fe: 0.2%, Zn: 1.2%, Ni: 0.2%, Sn: 0.1%, Sr : 1.2%, Ti: 2.1%, B: 2.1%, Sb: 1.2%, As: 0.3%, RE: 0.22%, LaCe: 0.4% and Pr: 0.3%, the balance is Al and unavoidable impurities, and Impurities ≤0.1%.
Embodiment 2
[0019] An aluminum alloy ingot, comprising the following components in weight percentage: Si: 11.4%, Cu: 1.5%, Mg: 0.3%, Fe: 0.4%, Zn: 1.4%, Ni: 0.4%, Sn: 0.3%, Sr : 2.4%, Ti: 2.4%, B: 2.4%, Sb: 1.4%, As: 0.5%, RE: 0.44%, LaCe: 1.4% and Pr: 0.5%, the balance is Al and unavoidable impurities, and Impurities ≤0.1%.
Embodiment 3
[0021] An aluminum alloy ingot, comprising the following components in weight percentage: Si: 9.3%, Cu: 1.4%, Mg: 0.2%, Fe: 0.3%, Zn: 1.3%, Ni: 0.3%, Sn: 0.2%, Sr : 1.8%, Ti: 2.3%, B: 2.3%, Sb: 1.3%, As: 0.4%, RE: 0.33%, LaCe: 0.9% and Pr: 0.4%, the balance is Al and unavoidable impurities, and Impurities ≤0.1%.
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Abstract
The invention relates to an aluminum alloy ingot. The aluminum alloy ingot is prepared from, by weight percent, 7.2%-11.4% of Si, 1.2%-1.5% of Cu, 0.1%-0.3% of Mg, 0.2%-0.4% of Fe, 1.2%-1.4% of Zn, 0.2%-0.4% of Ni, 0.1%-0.3% of Sn, 1.2%-2.4% of Sr, 2.1%-2.4% of Ti, 2.1%-2.4% of B, 1.2%-1.4% of Sb, 0.3%-0.5% of As, 0.22%-0.44% of RE, 0.4%-1.4% of LaCe, 0.3%-0.5% of Pr and the balance Al and inevitable impurities, wherein the content of the impurities is not larger than 0.1%. The aluminum alloy ingot is good in comprehensive performance, resistant to corrosion and stable in performance.
Description
technical field [0001] The invention relates to the field of metal materials, in particular to an aluminum alloy ingot. Background technique [0002] Aluminum alloy is an alloy composed of aluminum as a matrix element and then adding one or more alloying elements. The density of aluminum alloy is low, but its strength is relatively high, and it has excellent electrical conductivity, thermal conductivity and corrosion resistance, etc., which makes aluminum alloy materials widely used in the power industry. [0003] Aluminum alloy is an extended product of pure aluminum. The density of pure aluminum is small (ρ=2.7g / m3), about 1 / 3 of that of iron, and its melting point is low, about 660°C. Aluminum has a face-centered cubic structure, so it has High plasticity (δ: 32-40%, ψ: 70-90%), so it is easy to process, can be made into various profiles and plates, and has good corrosion resistance. However, the strength of pure aluminum is very low, so it is not suitable for structura...
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