High-elongation aluminum alloy section bar and making method thereof

A technology of aluminum alloy profiles and high elongation, applied in the field of aluminum alloy materials, can solve the problems that cannot meet the needs of special industries, and achieve the effect of high tensile strength and yield strength

Inactive Publication Date: 2014-08-20
池州市光明塑钢有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the elongation rate of aluminum alloy profiles in the existing market is generally only about 10%, which is increasingly unable to meet the needs of special industries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] A high-elongation aluminum alloy profile, the chemical composition of the alloy is: Si 0.15-0.35, Cu 0.04-0.08, Mg 1.8-2.6, Zn≤0.10, Mn 0.5-0.9, Li 0.45-0.65, Cr 0.1 according to the mass percentage -0.3, Fe≤0.25, Ti≤0.05, Ta 0.15-0.25, Be 0.1-0.2, Y 0.03-0.06, Lu 0.02-0.04, and the balance is Al.

[0017] A method for preparing a high-elongation aluminum alloy profile, comprising the following steps:

[0018] (1) Calculate and weigh the charge according to the formula ratio, take aluminum ingots and magnesium ingots and add them to the melting furnace for heating and melting. When the temperature of the melt reaches 720°C, add Al-8wt%Li intermediate alloy and Al-4wt%Cr intermediate Alloy, Al-2wt%Be intermediate alloy, after stirring evenly, continue to heat up to 750°C, add Al-10wt%Mn intermediate alloy, Al-3wt%Ta intermediate alloy in turn, after all the furnace materials are melted, stir for 20min to make the composition uniform, adjust When the temperat...

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Abstract

The invention discloses a high-elongation aluminum alloy section bar and a making method thereof. The high-elongation aluminum alloy section bar comprises, by mass, 0.15-0.35% of Si, 0.04-0.08% of Cu, 1.8-2.6% of Mg, 0.10% or less of Zn, 0.5-0.9% of Mn, 0.45-0.65% of Li, 0.1-0.3% of Cr, 0.25% or less of Fe, 0.05% or less of Ti, 0.15-0.25% of Ta, 0.1-0.2% of Be, 0.03-0.06% of Y, 0.02-0.04% of Lu, and the balance Al. The aluminum alloy section bar has a high elongation reaching above 15%, also has a high tensile strength and a high yield strength, and completely meets performance demands of bridges, thin walls and complex section industrial section bars.

Description

technical field [0001] The invention relates to a high-elongation aluminum alloy profile and a preparation method thereof, belonging to the field of aluminum alloy materials. Background technique [0002] Aluminum alloy has low density, but relatively high strength, close to or exceeding high-quality steel, good plasticity, easy to process, can be made into various profiles, and has excellent mechanical properties, physical properties and corrosion resistance. Aluminum alloy profiles are widely used in aerospace, transportation, machinery manufacturing, building decoration, chemical industry, etc., and are an important non-ferrous metal structural material. With the rapid development of science and technology and industrial economy, the requirements for the elongation of aluminum alloys such as bridges, thin walls, and complex sections are increasing. However, the elongation rate of aluminum alloy profiles on the existing market is generally only about 10%, which is increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
Inventor 丁兴
Owner 池州市光明塑钢有限公司
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