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Magnesium-containing aluminum alloy for hot working of pipe

A magnesium-aluminum alloy, hot working technology, applied in the field of alloy materials, can solve the problems of decreased strength, decreased fatigue resistance, and can not meet processing requirements, and achieves the effect of increasing tensile strength and decreasing grain diameter

Inactive Publication Date: 2017-05-31
虞海盈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grains of the currently used magnesium-containing aluminum alloys are coarse, which will cause a decrease in fatigue strength.
In addition, when the aluminum alloy wall is expanded or holed, it will cause a decrease in strength
However, the existing magnesium-containing aluminum alloys cannot meet the processing requirements during thermal processing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A magnesium-containing aluminum alloy for hot-working pipes, the composition of which includes, by mass percentage, 1.8% magnesium, 0.1% silicon, 0.2% iron, 0.17% chromium, 0.01% yttrium, 0.001% titanium, and 0.0045% Boron, the rest is aluminum and unavoidable impurities.

Embodiment 2

[0022] A magnesium-containing aluminum alloy for hot-working pipes, the composition of which includes, by mass percentage, 2.1% magnesium, 0.15% silicon, 0.3% iron, 0.20% chromium, 0.03% yttrium, 0.003% titanium, and 0.014% Boron, the rest is aluminum and unavoidable impurities.

Embodiment 3

[0024] A magnesium-containing aluminum alloy for hot-working pipes, the composition of which includes, by mass percentage, 2.0% magnesium, 0.13% silicon, 0.25% iron, 0.18% chromium, 0.015% yttrium, 0.001% titanium, 0.0045% Boron, the rest is aluminum and unavoidable impurities.

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PUM

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Abstract

The invention relates to a magnesium-containing aluminum alloy for hot working of a pipe. The magnesium-containing aluminum alloy for hot working of the pipe comprises, by mass percentage, 1.8%-2.1% of magnesium, 0.1%-0.15% of silicon, 0.2%-0.3% of iron, 0.01%-0.03% of yttrium, 0.17%-0.20% of chromium, 0.001%-0.003% of titanium, 0.003%-0.015% of boron and the balance aluminum and inevitable impurities. In the hot working process, the tensile strength of the magnesium-containing aluminum alloy for hot working of the pipe is greatly improved compared with that of an existing magnesium-containing aluminum alloy.

Description

technical field [0001] The invention belongs to the field of alloy materials, and in particular relates to a magnesium-containing aluminum alloy for hot processing pipes. Background technique [0002] As the weight of vehicle parts is required to be reduced, it is gradually becoming normal to use aluminum alloy parts instead of steel products. However, for some thin-walled products, the effect of casting or die-casting is not good, and when the aluminum alloy is made into parts with complex shapes by means of elongation, the cold working method used in the past is prone to material cracking. [0003] Therefore, the use of thermal processing methods has been valued. However, the currently used magnesium-containing aluminum alloys have coarse grains, which will cause a decrease in fatigue strength. In addition, when the aluminum alloy wall is expanded or drilled, the strength will decrease. However, the existing magnesium-containing aluminum alloys cannot meet the processin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08
CPCC22C21/08
Inventor 虞海盈
Owner 虞海盈
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