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High-strength magnesium alloy tube

A magnesium alloy and pipe technology, which is applied in the field of high-strength magnesium alloy pipes, can solve the problems of low strength, poor strength, and obstacles to the application of magnesium alloy pipes, and achieve increased strength, strong solid solution strengthening, fine grain strengthening and grain boundaries. Strong effect

Inactive Publication Date: 2010-08-18
嘉兴中科亚美合金技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnesium alloy pipes commonly used at present have low strength, which seriously hinders the further application of magnesium alloy pipes, and has the defect of poor strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: A high-strength magnesium alloy pipe, which contains aluminum, zinc, and manganese, and the mass percentages it contains are: 8.2% for aluminum Al, 0.65% for zinc Zn, 0.41% for manganese Mn, and 0.5% for adding rare earth RE , Its tensile strength is 351MPa, and its elongation is 8.4%.

Embodiment 2

[0008] Embodiment 2: A high-strength magnesium alloy pipe, which contains aluminum, zinc, and manganese, and the mass percentages it contains are: 8.2% for aluminum Al, 0.63% for zinc Zn, 0.43% for manganese Mn, and 1.0% for adding rare earth RE , Its tensile strength is 360MPa and its elongation is 10.2%.

Embodiment 3

[0009] Embodiment 3: A kind of high-strength magnesium alloy pipe material, it contains aluminum, zinc, manganese, and the mass percent that it contains is: aluminum Al is 8.3%, zinc Zn is 0.63%, manganese Mn is 0.41%, adds rare earth RE to be 1.5% , Its tensile strength is 345MPa and its elongation is 11.5%.

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Abstract

The invention relates to a high-strength magnesium alloy tube containing the following components in percent by weight: 7.8%-9.2% of aluminum Al, 0.2%-0.8% of zinc Zn and 0.2%-0.5% of manganese Mn. The high-strength magnesium alloy tube is characterized by also containing 0.5%-2.0% of rare earth RE in percent by weight. Because the rare earth RE can react with the aluminum Al to generate an Al-RE compound, the dispersion-strengthening function of the Al-RE compound can improve the strength of alloy and refine crystal particles so that the amount of a Mg17Al12 phase in the alloy is reduced, the original continuous and semi-continuous net-shaped crystal boundary structure is gradually changed into an interrupted and dispersion-distribution belt-shaped structure so that the fine crystal strengthening and the crystal boundary strengthening are more obvious, and meanwhile, the rare earth RE has the function of strong solid-dissolving strengthening, and the comprehensive mechanical properties of the alloy at room temperature are improved.

Description

technical field [0001] The invention relates to a magnesium alloy pipe, in particular to a high-strength magnesium alloy pipe suitable for mass production. Background technique [0002] Judging from the development trend of magnesium alloy applications in the world, magnesium alloy profiles are important structural materials for air transportation, land transportation and military industry in the future. Many plates, bars, pipes, etc. required by them cannot be replaced by casting products. Magnesium alloy plates, rods and pipes were mainly used in cutting-edge defense fields such as aerospace in the past. In recent years, due to the great development of the magnesium alloy industry, they have been widely used in civilian fields, such as 3C electrical product casings and vehicles. Supports, wheelchairs, medical equipment and rehabilitation, sports and fitness equipment, etc., the market prospect is very broad. However, the magnesium alloy pipes commonly used at present have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02
Inventor 周学华胡少峰张娅
Owner 嘉兴中科亚美合金技术有限责任公司
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