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Method of improving tensile property of aluminum alloy

A technology for tensile properties and aluminum alloys, which is applied in the field of aluminum alloys, can solve the problems of general tensile properties of cast aluminum alloys and poor tensile properties of aluminum alloys, achieve the elimination of coarse non-equilibrium solidification eutectic and dendrite segregation, and improve tensile properties. elongation, grain refinement effect

Inactive Publication Date: 2020-01-03
含山县能华铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the tensile properties of cast aluminum alloys processed by existing methods are average and cannot meet the needs of the market.
[0003] Iron is an unavoidable impurity element in cast aluminum-silicon alloys. In aluminum-silicon alloys, iron elements generally exist in the aluminum-silicon alloy in the form of elongated flaky β-Fe iron-rich phases. During the casting process , the aluminum alloy castings will severely split the aluminum-silicon alloy casting matrix due to the elongated flaky β-Fe iron-rich phase, which will become the crack source and crack propagation direction of the aluminum-silicon alloy fracture under force, resulting in the tensile strength of the aluminum alloy. poor performance

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] A method for improving the tensile properties of aluminum alloys, which includes ultrasonic treatment of aluminum alloy solutions and high-temperature and high-pressure treatment of formed aluminum alloy castings;

[0021] The percentage mass of strontium in the aluminum alloy is: 0.022%;

[0022] The percentage mass of cerium in the aluminum alloy is: 0.011%;

[0023] The mass percentage of zirconium in the aluminum alloy is: 0.22%.

[0024] As a further technical solution, the percentages of other elements in the aluminum alloy are: Si0.32%, Mn0.14%, Cr0.06%, Mg1.3%, Cu0.18%, Ti0.5%, B0.03 %, Sb0.10%, Fe0.12%, and the rest is aluminum.

[0025] As a further technical solution, the mass ratio of strontium to cerium in the aluminum alloy is 2:1.

[0026] As a further technical solution, the mass ratio of strontium to zirconium in the aluminum alloy is 1:10.

[0027] As a further technical solution, the ultrasonic treatment of the aluminum alloy solution is to perfor...

Embodiment 2

[0033] A method for improving the tensile properties of aluminum alloys, which includes ultrasonic treatment of aluminum alloy solutions and high-temperature and high-pressure treatment of formed aluminum alloy castings;

[0034] The percentage mass of strontium in the aluminum alloy is: 0.026%;

[0035] The percentage mass of cerium in the aluminum alloy is: 0.013%;

[0036] The percentage mass of zirconium in the aluminum alloy is: 0.26%.

[0037] As a further technical solution, the percentages of other elements in the aluminum alloy are: Si0.32%, Mn0.14%, Cr0.06%, Mg1.3%, Cu0.18%, Ti0.5%, B0.03 %, Sb0.10%, Fe0.12%, and the rest is aluminum.

[0038] As a further technical solution, the mass ratio of strontium to cerium in the aluminum alloy is 2:1.

[0039] As a further technical solution, the mass ratio of strontium to zirconium in the aluminum alloy is 1:10.

[0040] As a further technical solution, the ultrasonic treatment of the aluminum alloy solution is to perfor...

Embodiment 3

[0046] A method for improving the tensile properties of aluminum alloys, which includes ultrasonic treatment of aluminum alloy solutions and high-temperature and high-pressure treatment of formed aluminum alloy castings;

[0047] The percentage mass of strontium in the aluminum alloy is: 0.024%;

[0048] The percentage mass of cerium in the aluminum alloy is: 0.012%

[0049] The percentage mass of zirconium in the aluminum alloy is: 0.24%.

[0050] As a further technical solution, the percentages of other elements in the aluminum alloy are: Si0.32%, Mn0.14%, Cr0.06%, Mg1.3%, Cu0.18%, Ti0.5%, B0.03 %, Sb0.10%, Fe0.12%, and the rest is aluminum.

[0051] As a further technical solution, the mass ratio of strontium to cerium in the aluminum alloy is 2:1.

[0052] As a further technical solution, the mass ratio of strontium to zirconium in the aluminum alloy is 1:10.

[0053] As a further technical solution, the ultrasonic treatment of the aluminum alloy solution is to perform...

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Abstract

The invention discloses a method of improving the tensile property of an aluminum alloy and relates to the technical field of aluminum alloys. The method comprises the following steps of carrying outultrasonic treatment on an aluminum alloy solution; and carrying out high-temperature and high-pressure treatment on a formed aluminum alloy casting. By matching component contents reasonably, the aluminum alloy, the tensile strength of which is greater than or equal to 650 MPa, can be obtained.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to a method for improving the tensile properties of aluminum alloys. Background technique [0002] As a traditional metal material, cast aluminum alloy has the characteristics of low specific gravity, high specific strength, easy processing, low cost, good heat dissipation and corrosion resistance, flexible and simple production parts, and easy mass production. It is widely used in aviation, aerospace, Automobile, machinery and other industries. With the development of modern industry, there is an increasing demand for cast aluminum alloys, especially for cast aluminum alloys with comprehensive mechanical properties of high tensile strength and elongation. However, the tensile properties of the cast aluminum alloys processed by the existing methods are average, which cannot meet the needs of the market. [0003] Iron is an unavoidable impurity element in cast a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02
CPCC22C1/026C22C21/08
Inventor 江进华
Owner 含山县能华铸造有限公司
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