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High performance Al-Mg-Si aluminum alloy extrusion material and preparation method thereof

An aluminum alloy material, al-mg-si technology, applied in the field of aluminum alloy materials, can solve the problems of not being able to meet the higher performance of materials, and achieve the effects of strong precipitation strengthening, comprehensive performance improvement, and performance improvement

Active Publication Date: 2020-01-10
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasing requirements for high-end products on material quality, higher requirements are put forward for the degree of grain refinement and mechanical properties. The current control method can no longer meet the requirements for higher performance of materials.

Method used

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  • High performance Al-Mg-Si aluminum alloy extrusion material and preparation method thereof
  • High performance Al-Mg-Si aluminum alloy extrusion material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a high-performance rare earth Al-Mg-Si aluminum alloy extrusion material, comprising the following steps:

[0026] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The ratio of the mass percentage of each element of the aluminum alloy plate raw material is as follows:

[0027] element Si Mg Cu mn Cr Ti Er Zn Fe Al content 0.61 0.65 0.16 0.40 0.17 0.016 0.16 0.01 0.12 margin

[0028] The prepared aluminum-chromium master alloy, aluminum-copper master alloy, aluminum-manganese master alloy, and industrial silicon block (purity above 99.9%, volume range of each small block is less than 50cm 3 ) and aluminum ingots (purity above 99.9%) are respectively transferred into the melting furnace, and the upper middle layer of the melting furnace is placed with aluminum-chromium master alloy, aluminum-copper master alloy, aluminum-manga...

Embodiment 2

[0035] A method for preparing a high-performance rare earth Al-Mg-Si aluminum alloy extrusion material, comprising the following steps:

[0036] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The ratio of the mass percentage of each element of the aluminum alloy plate raw material is as follows:

[0037] element Si Mg Cu mn Cr Ti sc Zn Fe Al content 0.45 0.50 0.02 0.06 0.01 0.018 0.18 0.01 0.10 margin

[0038] The prepared aluminum-chromium master alloy, aluminum-copper master alloy, aluminum-manganese master alloy, and industrial silicon block (purity above 99.9%, volume range of each small block is less than 50cm 3 ) and aluminum ingots (purity above 99.9%) are respectively transferred into the melting furnace, and the upper middle layer of the melting furnace is placed with aluminum-chromium master alloy, aluminum-copper master alloy, aluminum-mang...

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Abstract

The invention belongs to the technical field of aluminum alloy materials, and relates to a high performance Al-Mg-Si aluminum alloy extrusion material and a preparation method thereof. The high performance Al-Mg-Si aluminum alloy extrusion material is prepared from the following element components in percent by weight: 0.4-0.7% of Si, 0.5-0.7% of Mg, 0.01-0.2% of Cu, 0.05-0.45% of Mn, 0.01-0.3% ofCr, 0.01-0.02% of Ti, 0.05-0.30% of rare earth elements, less than or equal to 0.1% of Zn, less than or equal to 0.15% of Fe and the balance Al, wherein the content of single elements is less than orequal to 0.05%, the total content of impurities is less than or equal to 0.15%, and any one or two of the rare earth elements Er and Sc are mixed. The preparation method can optimize the alloy components obviously, balance and refine crystal grains, purify and clean a melt, reduce the casting flaws and improve the quality of a cast ingot greatly. In addition, the surface quality of an extruded profile can be better improved, and the extrusion speed and the thermal treatment comprehensive mechanical property of the extruded profile product are improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and relates to a high-performance rare earth Al-Mg-Si aluminum alloy extruded material and a preparation method thereof. Background technique [0002] With the increase in the demand for aluminum alloy extrusion profiles in high-end technical fields such as national defense and military industry, rail transit, and aerospace, higher requirements are also put forward for its performance. The requirements for high speed, safety, energy saving, comfort, and environmental protection put forward by rail transit and vehicles are one of the major issues facing the domestic modernization drive. Al-Mg-Si aluminum alloy has been widely used in the manufacture of rail transit and vehicles because of its medium strength, good weldability and extrusion formability, especially it can extrude different thickness and thin walls with complex cross-sectional shapes Hollow profiles. At present, va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/03C22F1/043C22F1/047C22F1/05
CPCC22C1/026C22C1/03C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05
Inventor 冯艳飞孙巍谢方亮杨路冯枭王克张宇郑建吴楠
Owner CHINA ZHONGWANG
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