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Stress-corrosion-resistant aluminum alloy

A stress corrosion resistant, aluminum alloy technology, applied in the field of material engineering, to achieve the effect of high hardness, not easy to corrode, and long service life

Inactive Publication Date: 2016-06-01
QINGDAO YUANZHILIN AGRI SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the aluminum alloy of marine operation equipment is often at the seawater-air interface, and the corrosion at the junction of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] The weight percentages of the components in the aluminum alloy in this example are as follows: Si: 0.40%, Mg: 0.64%, Cu: 0.02%, Fe: 0.23%, Sr: 0.03%, La: 0.14%, Nd: 0.18%, Zn : 0.03%, Ti: 0.05%, and the rest is Al.

[0014] The above components are used to prepare aluminum alloy profile products. The specific preparation method is: after mixing the components evenly, they are homogenized in the aluminum rod furnace to improve the uniformity of the overall performance, so that the material has both appropriate hardness and toughness. Then it is cooled by air, and the ingot is heated at 450-500°C, and then sent to the extruder for extrusion. The temperature of the extrusion barrel is 400°C±10°C, and the extrusion speed is 3-6m / min. After mist quenching, after cutting, cooling bed cooling, stretching and straightening, artificial aging is carried out. The holding temperature is 250°C±10°C, and the time is 180min, to obtain the finished aluminum alloy. ...

Example Embodiment

[0016] Example 2

[0017] The weight percentages of the components in the aluminum alloy in this example are as follows: Si: 0.44%, Mg: 0.66%, Cu: 0.02%, Fe: 0.25%, Sr: 0.02%, La: 0.14%, Nd: 0.18%, Zn : 0.05%, Ti: 0.02%, and the rest is Al.

[0018] The above components are used to prepare aluminum alloy profile products. The specific preparation method is: after mixing the components evenly, they are homogenized in the aluminum rod furnace to improve the uniformity of the overall performance, so that the material has both appropriate hardness and toughness. Then it is cooled by air, and the ingot is heated at 450-500°C, and then sent to the extruder for extrusion. The temperature of the extrusion barrel is 400°C±10°C, and the extrusion speed is 3-6m / min. After mist quenching, after cutting, cooling bed cooling, stretching and straightening, artificial aging is carried out. The holding temperature is 250°C±10°C, and the time is 180min, to obtain the finished aluminum alloy. ...

Example Embodiment

[0020] Example 3

[0021] The weight percentages of the components in the aluminum alloy in this example are as follows: Si: 0.42%, Mg: 0.65%, Cu: 0.02%, Fe: 0.24%, Sr: 0.03%, La: 0.14%, Nd: 0.18%, Zn : 0.05%, Ti: 0.04%, and the rest is Al.

[0022] The above components are used to prepare aluminum alloy profile products. The specific preparation method is: after mixing the components evenly, they are homogenized in the aluminum rod furnace to improve the uniformity of the overall performance, so that the material has both appropriate hardness and toughness. Then it is cooled by air, and the ingot is heated at 450-500°C, and then sent to the extruder for extrusion. The temperature of the extrusion barrel is 400°C±10°C, and the extrusion speed is 3-6m / min. After mist quenching, after cutting, cooling bed cooling, stretching and straightening, artificial aging is carried out. The holding temperature is 250°C±10°C, and the time is 180min, to obtain the finished aluminum alloy. ...

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Abstract

The invention discloses stress-corrosion-resistant aluminum alloy. The stress-corrosion-resistant aluminum alloy is composed of, by weight, 0.40%-0.44% of Si, 0.64%-0.66% of Mg, 0.02% of Cu, 0.23%-0.25% of Fe, 0.02%-0.03% of Sr, 0.14% of La, 0.18% of Nd, 0.03%-0.05% of Zn, 0.02%-0.05% of Ti and the balance Al. The aluminum alloy is smooth in surface, wider in hardness range and good in stress-corrosion resistance and can be widely applied to manufacturing of various ocean operation devices.

Description

technical field [0001] The invention relates to the field of material engineering, in particular to a stress corrosion resistant aluminum alloy. Background technique [0002] Aluminum alloy has the advantages of light weight and easy availability of raw materials, and has been gradually used in marine operation equipment. Although aluminum alloys used in marine operation equipment have certain corrosion resistance, in the process of measuring the corrosion resistance of aluminum alloys, the aluminum alloys are often completely submerged in seawater as a prerequisite or evaluated under salt spray conditions. In fact, the aluminum alloy of marine operation equipment is often on the seawater-air interface, and the corrosion at this two-phase interface is more serious than that completely submerged in seawater. At present, few aluminum alloys can cope with this situation. In addition, aluminum alloys for marine operation equipment are often subjected to various stress loads, so...

Claims

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Application Information

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IPC IPC(8): C22C21/08
CPCC22C21/08
Inventor 刘书元
Owner QINGDAO YUANZHILIN AGRI SCI & TECH DEV
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