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Aluminum alloy strip

A technology for aluminum alloy strips and impurities, applied in the field of aluminum alloys, can solve the problems of inability to meet the needs of high-strength use, low tensile strength and yield strength, and poor processing performance, so as to improve corrosion resistance and processing performance. , the effect of processing performance improvement

Active Publication Date: 2017-06-13
中电科技(武汉)电子信息发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main alloying element of the 5 series aluminum alloy is Mg. With the increase of Mg content, the strength of the aluminum alloy material increases, but the plasticity decreases, and the processing performance deteriorates, which makes subsequent processing relatively difficult.
[0004] The Mg content in existing aluminum alloys is usually less than 5%. Although the processing is relatively easy, the tensile strength and yield strength are relatively low at the same elongation, which cannot meet the needs of high-strength applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The composition of the aluminum alloy strip in this embodiment is: Si: 0.02wt%, Fe: 0.2wt%, Mn: 0.25wt%, Mg: 5.2wt%, and the balance is Al and unavoidable impurities.

[0037] The aluminum alloy strip material of the present embodiment can be made by following method:

[0038] 1. Manufacture ingot

[0039]According to the set composition, after melting industrial pure aluminum ingots, add pure magnesium ingots, aluminum-manganese master alloys, aluminum-iron master alloys, aluminum-silicon master alloys, melt and purify, degas and then melt and cast to obtain a size of 560mm*1420mm*5200mm wherein, the composition of the ingot is: Si: 0.02wt%, Fe: 0.2wt%, Mn: 0.25wt%, Mg: 5.2wt%, and the balance is Al and unavoidable impurities.

[0040] When manufacturing ingots, the process control conditions are: refining temperature 740°C; casting speed 45mm / min, water flow 210m 3 / h, the casting temperature is 680°C; in addition, in the manufacture of ingots, the grain size should...

Embodiment 2

[0059] The composition of the aluminum alloy strip in this embodiment is: Si: 0.10wt%, Fe: 0.15wt%, Mn: 0.23wt%, Mg: 5.3wt%, and the balance is Al and unavoidable impurities.

[0060] The aluminum alloy strip material of the present embodiment can be made by following method:

[0061] 1. Manufacture ingot

[0062] According to the set composition, after melting industrial pure aluminum ingots, add pure magnesium ingots, aluminum-manganese master alloys, aluminum-iron master alloys, aluminum-silicon master alloys, melt and purify, degas and then melt and cast to obtain a size of 560mm*1420mm*5200mm wherein, the composition of the ingot is: Si: 0.10wt%, Fe: 0.15wt%, Mn: 0.23wt%, Mg: 5.3wt%, and the balance is Al and unavoidable impurities.

[0063] When manufacturing ingots, the process control conditions are: refining temperature 735°C; casting speed 40mm / min, water flow 200m 3 / h, the casting temperature is 665°C; in addition, in the manufacture of ingots, the grain size sho...

Embodiment 3

[0082] The composition of the aluminum alloy strip in this embodiment is: Si: 0.08wt%, Fe: 0.1wt%, Mn: 0.18wt%, Mg: 5.4wt%, and the balance is Al and unavoidable impurities.

[0083] The aluminum alloy strip material of the present embodiment can be made by following method:

[0084] 1. Manufacture ingot

[0085] According to the set composition, after melting industrial pure aluminum ingots, add pure magnesium ingots, aluminum-manganese master alloys, aluminum-iron master alloys, aluminum-silicon master alloys, melt and purify, degas and then melt and cast to obtain a size of 560mm*1420mm*5200mm wherein, the composition of the ingot is: Si: 0.08wt%, Fe: 0.1wt%, Mn: 0.18wt%, Mg: 5.4wt%, and the balance is Al and unavoidable impurities.

[0086] When manufacturing ingots, the process control conditions are: refining temperature 750°C; casting speed 50mm / min, water flow 220m 3 / h, the casting temperature is 690°C; in addition, when making ingots, the grain size should be contr...

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Abstract

The invention provides an aluminum alloy strip. The aluminum alloy strip comprises smaller than or equal to 0.10 wt% of Si, smaller than or equal to 0.2 wt% of Fe, 0.18 wt%-0.25 wt% of Mn, 5.0 wt%-6.5 wt% of Mg and the balance Al and inevitable impurities. The aluminum alloy strip can the prepared in the manner that a cast ingot with set components is subjected to soaking, hot rolling, cold rolling and annealing in sequence; and particularly, cold rolling and annealing comprise first cold rolling, first annealing, second cold rolling, second annealing and third cold rolling, all of which are sequentially conducted. The aluminum alloy strip is good in machinability, high in tensile strength and yield strength and excellent in comprehensive performance.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to an aluminum alloy strip. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. The main alloying element of the 5-series aluminum alloy is Mg. With the increase of Mg content, the strength of the aluminum alloy material increases, but the plasticity decreases, and the processing performance deteriorates, which makes subsequent processing relatively difficult. Therefore, the Mg content of the 5-series aluminum alloy is usually controlled below 5.0%. [0003] 5182 alloy is a representative 5-series aluminum alloy, its composition is: Si: 0.10wt%, Fe: 0.2wt%, Mn: 0.3wt%, Mg: 4.8wt%, the balance is Al and unavoidable Impurities. The manufacturing method of 5182H32 alloy is usually: after processing the alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/06C22C21/08C22F1/047
Inventor 周礼泉崔昊段纯滨孙林生
Owner 中电科技(武汉)电子信息发展有限责任公司
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