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Die casting aluminium alloy with high strength

A casting aluminum alloy, high-strength technology, applied in the field of aluminum alloy, can solve the problems of low strength and elongation, and achieve the effect of good structure stability

Inactive Publication Date: 2015-09-02
LIUZHOU BAITIAN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-strength die-casting aluminum alloy, which can solve the problem of low strength and elongation of the existing die-casting aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The high-strength die-casting aluminum alloy of this embodiment is composed of the following components in weight percentage: Si10%, Cu5%, Zn1.2%, Mn0.3%, Mg0.1%, Ti0.05%, Sr0.01% , Cr0.15%, B0.02%, Fe0.22%, the total weight of other impurities is less than 0.25%, and the balance is Al; wherein, the Al is pure aluminum with a purity of 99.9%, Cu is electrolytic copper, and Mg is Industrial pure magnesium. After the die-casting is completed, aging treatment is carried out under the condition of 160° C., and the aging time is 9 hours. After the treatment is completed, the required die-casting aluminum alloy is obtained.

[0012] The properties of the die-cast aluminum alloy in this embodiment are as follows: the tensile strength is 290.8 MPa, the yield strength is 181.1 MPa, and the elongation is 7.16%.

Embodiment 2

[0014] The high-strength die-casting aluminum alloy of this embodiment is composed of the following components in weight percentage: 12.8% Si, 3.3% Cu, 0.8% Zn, 0.6% Mn, 0.4% Mg, 0.15% Ti, Sr0.015%, Cr0.05%, B0.025%, Fe0.2%, the total weight of other impurities is less than 0.25%, and the balance is Al. Among them, the Al is pure aluminum with a purity of 99.9%, and Cu is electrolytic copper , Mg is industrial pure magnesium. After the die-casting is completed, aging treatment is carried out under the condition of 150° C., and the aging time is 12 hours. After the treatment is completed, the required die-casting aluminum alloy is obtained.

[0015] The properties of the die-casting aluminum alloy in this embodiment are as follows: the tensile strength is 315.7 MPa, the yield strength is 216.4 MPa, and the elongation is 7.2%.

Embodiment 3

[0017] The high-strength die-casting aluminum alloy of this embodiment is composed of the following components in weight percentage: Si15%, Cu3%, Zn0.1%, Mn1%, Mg0.6%, Ti0.05%, Sr0.02%, Cr0 .1%, B0.04%, Fe0.1%, the total weight of other impurities is less than 0.25%, and the balance is Al. Among them, the Al is pure aluminum with a purity of 99.9%, Cu is electrolytic copper, and Mg is industrial pure magnesium . After the die-casting is completed, aging treatment is carried out under the condition of 155° C., and the aging time is 10 hours. After the treatment is completed, the required die-casting aluminum alloy is obtained.

[0018] The properties of the die-casting aluminum alloy in this embodiment are as follows: the tensile strength is 328.6 MPa, the yield strength is 222.3 MPa, and the elongation is 6.1%.

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Abstract

The invention discloses a die casting aluminium alloy with high strength, relating to the technical field of aluminium alloys. The die casting aluminium alloy comprises the following components by weight percent: 10-15% of Si, 3-5% of Cu, no more than 1.2% of Zn, 0.3-1% of Mn, 0.1-0.6% of Mg, 0.05-0.15% of Ti, 0.01-0.02% of Sr, no more than 0.15% of Cr, 0.02-0.04% of B, less than 0.25% of Fe, less than 0.25% of total other impurities and the balance of Al. The problems that the existing die casting aluminium alloys have lower strength and elongation are solved by adopting the die casting aluminium alloy.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength die-casting aluminum alloy. Background technique [0002] Aluminum alloy is a common lightweight metal material. It is widely used in industries such as automobiles, ships, aerospace, machinery, and communications. It has the characteristics of good processing performance and light weight. With the requirements of lightweight and low energy consumption, aluminum Alloy demand continues to expand. Die-casting aluminum alloy is an aluminum alloy obtained by pressure casting. This die-casting aluminum alloy can be used to produce workpieces with complex shapes, and its cost is low, so it is widely used. However, the strength and elongation of existing die-casting aluminum alloys are low, and are prone to deformation and even breakage of mechanical parts, which cannot meet the working requirements of some mechanical parts that need to withstand relatively larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043
Inventor 谭皓原
Owner LIUZHOU BAITIAN MACHINERY
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