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A High Strength and Corrosion Resistant al-mg Alloy

An alloy and corrosion-resistant technology, applied in the field of high-strength and corrosion-resistant Al-Mg alloys, can solve the problem that the corrosion resistance cannot fully meet the requirements, and achieve the effect of improving the strength of the alloy

Inactive Publication Date: 2017-01-04
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, for ships, containers and other equipment that have been in seawater or coastal service for a long time, the existing 5083 aluminum alloy corrosion resistance cannot fully meet the requirements

Method used

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  • A High Strength and Corrosion Resistant al-mg Alloy
  • A High Strength and Corrosion Resistant al-mg Alloy

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with examples and comparative examples.

[0024] Alloy chemical composition weight percent in each embodiment: Fe<0.25%; Si<0.2%; Cu<0.1%; Mn=0.4~1.2%; Mg=4.5~6.0%; Zn=0.25~0.55%; Cr=0.10~ 0.3%; Zr<0.15%; Ti<0.15%; single impurity ≤0.05%, total impurity ≤0.15%; the balance is Al.

[0025] Weight percentage of alloy chemical composition in each comparative example (5083 aluminum alloy): Fe<0.4%; Si<0.4%; Cu<0.1%; Mn=0.4~1.0%; Mg=4.0~4.9%; Zn<0.25%; Cr =0.05~0.25%;; Ti<0.15%; single impurity ≤0.05%, total impurity ≤0.15%; the balance is Al.

[0026] The high-strength corrosion-resistant Al-Mg alloy of the present invention can be prepared into materials of required specifications by means of rolling, extrusion, etc. Taking rolling and extrusion as examples, the preparation methods are as follows:

[0027] A. Plate preparation by rolling. Select the alloy components within the scope of the present in...

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Abstract

The invention discloses a high-strength corrosion-resistant Al-Mg alloy, the chemical composition weight percent is: Fe≤0.3%; Si≤0.25%; Cu≤0.1%; Mn=0.4-1.2%; Mg=4.5-6.0%; Zn =0.25~0.55%; Cr=0.10~0.3%; Zr≤0.15%; Ti≤0.15%; the balance is Al. The invention solves the problem of insufficient strength and corrosion resistance of the existing 5083 aluminum alloy in the manufacture of vehicles, and the obtained alloy has a tensile strength σb≥320 Mpa, a yield strength σ0.2≥160 Mpa, and an elongation δ≥23%. The exfoliation corrosion test grade reaches PA grade.

Description

technical field [0001] The invention specifically relates to an Al-Mg alloy, especially a high-strength corrosion-resistant Al-Mg alloy. Background technique [0002] In recent years, with the rapid development of my country's transportation industry, lightweight transportation has become an inevitable trend, and replacing steel materials with aluminum alloys is an important and effective way to lightweight transportation. [0003] 5083 aluminum alloy is the most widely used in the manufacture of automobiles, trucks, high-speed rail, freight trains, ships and other vehicles, and has become an important material in the manufacture of vehicles. 5083 aluminum alloy has the characteristics of light weight, medium strength, easy forming, and corrosion resistance, which reduces the weight of the vehicle, improves its carrying capacity, and reduces energy consumption. [0004] However, there are still some problems in the application of the current 5083 aluminum alloy. According ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/02
Inventor 邓运来戴青松付平张佳琪廖飞欧世声肖涛
Owner CENT SOUTH UNIV
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