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Method for improving superplasticity of zinc-aluminum alloy through heat treatment

A zinc-aluminum alloy and superplasticity technology, which is applied in the field of improving the superplasticity of zinc-aluminum alloy through heat treatment, can solve the problems of low equipment requirements, special equipment, and high cost, and achieve low equipment requirements, increase superplasticity, and increase elongation. Effect

Inactive Publication Date: 2017-08-18
ANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processing techniques make zinc-aluminum alloy obtain superplasticity, but all require special equipment, high cost and low efficiency, and are not suitable for industrial scale manufacturing
[0005] Heat treatment has low equipment requirements, is suitable for industrial production, and has great application potential. However, the research on improving the superplasticity of alloys through heat treatment is mainly concentrated in the fields of magnesium alloys, aluminum alloys, and titanium alloys, and there is no report in the field of zinc-aluminum alloys.

Method used

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  • Method for improving superplasticity of zinc-aluminum alloy through heat treatment
  • Method for improving superplasticity of zinc-aluminum alloy through heat treatment
  • Method for improving superplasticity of zinc-aluminum alloy through heat treatment

Examples

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Effect test

Embodiment 1

[0019] The cast zinc-aluminum alloy, wherein the mass percentage of each component in the alloy is: 22%Al, 0.2%Cu, 0.005%Mg, and the balance is Zn, according to the national standard GB / T 228.1-2010 Metal material tensile test No. Part: The room temperature test method specifies that the specimen is cut into a thin plate shape for the tensile test specimen. The test specimen includes a gripping end and a deformation zone, the gripping end being symmetrical about the deformation zone. The length of the clamping end is 12 mm, and the width is 9 mm; the length and width of the deformation zone are both 3 mm; the thickness of the test sample is 2 mm.

[0020] The test specimens were first solution treated. The solution treatment is to heat the test sample at a constant temperature of 280 ° C for 10 hours to promote the transformation of the internal structure of the alloy into a face-centered cubic structure of zinc-rich α 2 Equivalent axis fine-grained structure. Zinc-rich alp...

Embodiment 2

[0025] Cast zinc-aluminum alloy, wherein the mass percentage of each component in the alloy is: 25%Al, 3%Cu, 0.005%Mg, and the balance is Zn, according to the national standard GB / T 228.1-2010 Metal material tensile test part one : The room temperature test method stipulates that the sample is cut into a tensile test sample in the shape of a thin plate. The test specimen includes a gripping end and a deformation zone, the gripping end being symmetrical about the deformation zone. The length of the clamping end is 12 mm, and the width is 9 mm; the length and width of the deformation zone are both 3 mm; the thickness of the test sample is 2 mm.

[0026] The test specimens were first solution treated. The solution treatment is to heat the test sample at a constant temperature of 360 ° C for 10 hours to promote the transformation of the internal structure of the alloy into a face-centered cubic structure of zinc-rich α 2 Equivalent axis fine-grained structure. Zinc-rich alpha ...

Embodiment 3

[0030] The cast zinc-aluminum alloy, wherein the mass percentage of each component in the alloy is: 15%Al, 1%Cu, 0.005%Mg, and the balance is Zn, according to the national standard GB / T 228.1-2010 Metal material tensile test No. Part: The room temperature test method specifies that the specimen is cut into a thin plate shape for the tensile test specimen. The test specimen includes a gripping end and a deformation zone, the gripping end being symmetrical about the deformation zone. The length of the clamping end is 12 mm, and the width is 9 mm; the length and width of the deformation zone are both 3 mm; the thickness of the test sample is 2 mm.

[0031] The test specimens were first solution treated. The solution treatment is to heat the test sample at a constant temperature of 320 ° C for 10 hours to promote the transformation of the internal structure of the alloy into a face-centered cubic zinc-rich α 2 Equivalent axis fine-grained structure. Zinc-rich alpha 2 The equia...

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Abstract

The invention discloses a method for improving superplasticity of a zinc-aluminum alloy through heat treatment. The provided method comprises the following steps that the zinc-aluminum alloy is subjected to solution treatment at the temperature ranging from 280 DEG C to 380 DEG C; the solution treatment time ranges from 8 h to 24 h; and water quenching is conducted after solution treatment is finished. By means of the above manner, the zinc-aluminum alloy can obtain an equiaxial fine grain structure composed of a large number of metastable alpha 2 phase grains with good plasticity, and accordingly the superplasticity of the alloy is greatly improved. The post-fracture elongation percentage of the zinc-aluminum alloy treated through the provided method reaches 1,970%; and compared with 200% which is the post-fracture elongation percentage of the zinc-aluminum alloy not treated through the method, the post-fracture elongation percentage of the alloy is greatly improved.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a method for improving the superplasticity of zinc-aluminum alloy through heat treatment. Background technique [0002] Zinc-aluminum alloy has high strength, high plasticity, excellent friction and wear performance, good vibration damping performance, no magnetism, no spark, good processing performance and low manufacturing cost. It is part of copper alloy, aluminum alloy and cast iron Alternative materials for parts. my country is a copper-poor and zinc-rich country. Research and development of high-performance zinc-aluminum alloys to replace copper alloys will enable my country to form an independent intellectual property system in the replacement and utilization of scarce resources, break through foreign technology trade barriers, and replace imports. The healthy development of the economy provides reliable technical support. [0003] Superplasticity refers to the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/16
CPCC22F1/002C22F1/165
Inventor 张阳明何强王志刚孙红英王吉波刘近平翟雁杨建军吕掌权刘嵩
Owner ANYANG INST OF TECH
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