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Preparation method for improving mechanical properties of aluminum alloy by adding elemental silicon, manganese and magnesium

A technology of aluminum alloy and magnesium elements, applied in the field of materials, can solve problems such as poor mechanical properties of aluminum alloys, and achieve the effect of improving strength and plasticity

Inactive Publication Date: 2016-04-20
王晓芳
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation method for improving the mechanical properties of aluminum alloys by adding silicon, manganese, and magnesium elements, so as to solve the existing technical problems of poor mechanical properties of aluminum alloys

Method used

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  • Preparation method for improving mechanical properties of aluminum alloy by adding elemental silicon, manganese and magnesium
  • Preparation method for improving mechanical properties of aluminum alloy by adding elemental silicon, manganese and magnesium
  • Preparation method for improving mechanical properties of aluminum alloy by adding elemental silicon, manganese and magnesium

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Embodiment

[0016] Embodiment: a preparation method for adding silicon, manganese, and magnesium elements to improve the mechanical properties of aluminum alloys, comprising the following steps:

[0017] (1) Ingredients: Add 0.45%Fe, 0.25%Cu, 0.25%Zn, 0.3%Si, 1.2%Mn, 1.1%Mg to aluminum alloy;

[0018] (2) Put the ingredients into the resistance furnace, use graphite crucible to melt in the resistance furnace, and the melting temperature is 740-780°C;

[0019] (3) Preheat the mold to 200°C;

[0020] (4) After the ingot is subjected to homogenization annealing treatment at 570°C for 14 hours, it is cooled in water at room temperature;

[0021] Al-10Fe, Al-10Mn and Al-12Si master alloys are used for the high melting point alloy elements Fe, Mn, Si, etc. in the step (2), and other elements are added in the form of pure metals.

[0022] During the melting in the step (2), the special covering agent for aluminum alloy is used to cover.

[0023] When smelting in the step (2), use C 2 C l6 o...

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Abstract

The invention provides a preparation method for improving the mechanical properties of an aluminum alloy by adding elemental silicon, manganese and magnesium. According to the invention, 0.3% of Si, 1.2% of Mn and 1.1% of Mg are added and preparation process consisting of batching, melting and homogenizing annealing is carried out; so the obtained aluminum alloy has substantially improved mechanical properties, and it is measured that sigma b of the alloy is no less than 240 MPa, sigma 0.2 is no less than 150 MPa and delta is no less than 21%.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method for improving the mechanical properties of aluminum alloy by adding silicon, manganese and magnesium elements. Background technique [0002] Al-Mn-Mg series antirust aluminum alloy not only has high strength and excellent corrosion resistance, but also has excellent formability, and is widely used in can making plates. There are two main factors that restrict the quality of domestic plates. One is the high impurity content of raw materials and poor microstructure uniformity. In addition, the rolling process, especially the hot rolling process, is relatively backward, resulting in low precision of the plate. Various production enterprises and research units have carried out a lot of exploration on the rolling process by introducing foreign equipment and technology, and have made some progress; however, there is still a lack of systematic research...

Claims

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Application Information

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IPC IPC(8): C22C21/00
Inventor 王晓芳
Owner 王晓芳
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