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2117 aluminum alloy added with zr or mg, and preparation process thereof

A preparation process and technology of aluminum alloy, applied in the field of 2117 aluminum alloy added with Zr or Mg element and its preparation process, can solve the problems of low strength of pure aluminum, unsuitable structural material and the like

Inactive Publication Date: 2016-05-11
何小红
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of pure aluminum is very low, so it is not suitable for structural materials, annealed Al plate, =80~100MPa

Method used

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  • 2117 aluminum alloy added with zr or mg, and preparation process thereof
  • 2117 aluminum alloy added with zr or mg, and preparation process thereof
  • 2117 aluminum alloy added with zr or mg, and preparation process thereof

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Embodiment Construction

[0018] Since the melting points of Zr, Mg and aluminum are quite different, and the flash point of Zr is low, it is easy to be burned directly, so it is generally added in the form of a master alloy, for which it is necessary to prepare a master alloy.

[0019] In order to facilitate calculation and weighing, it is determined to prepare 7.5% Al-Mg master alloy and 5% Al-Zr master alloy. The melting process of the master alloy is shown in Table 1.1.

[0020]

[0021] A corundum crucible with a capacity of 50g is used to melt the alloy, which is convenient to take out the remaining slag after pouring and saves cost. A steel pipe with a diameter of 11 mm and a length of 120 mm is used as the mold for pouring the sample, which is convenient for taking out the sample and measuring the performance of the sample. The alloy is smelted in a well-type resistance furnace, which is convenient for adding and stirring alloy elements.

[0022] The specific pouring process of the sample ...

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Abstract

The present invention discloses a 2117 aluminum alloy added with Zr or Mg, wherein the 2117 aluminum alloy is added with Mg with a mass fraction of 0.1-0.5% or Zr with a mass fraction of 0.01-0.05%, the optimal Mg addition amount is 0.3%, and the optimal Zr addition amount is 0.01-0.02%. The preparation process is characterized by comprising: placing weighed aluminum into a crucible, heating in a well resistance furnace until achieving a melting state, removing the membrane on the aluminum liquid surface by using a titanium rod, adding a corresponding interalloy Al-Zr or Al-Mg when the temperature is increased to 780-800 DEG C, stirring for 3-5 min, standing, casting into a mold pre-heated at a temperature of about 400 DEG C when the temperature is increased to 800 DEG C, cooling, and taking out.

Description

technical field [0001] The invention relates to a preparation process of 2117 aluminum alloy, in particular to a 2117 aluminum alloy added with Zr or Mg element and the preparation process thereof. Background technique [0002] Aluminum is one of the most widely distributed and abundant non-ferrous metals in the earth's crust. Since it was discovered in the 19th century, it has been widely used due to a series of good comprehensive properties. At present, it is the second most used metal after steel. The atomic number of Al is 13, the atomic weight is 26.9815, the density is 2.7×103kg / m3 (25°C), the melting point is 660.24°C, and the boiling point is 2467°C. Pure aluminum is a light metal with silver-white metallic luster, soft, with a face-centered cubic lattice (a=0.40486nm) structure, and no allotropic transformation. [0003] Aluminum has good light reflection performance, good electrical conductivity, and is a good conductor of heat. Pure aluminum has good ductility, s...

Claims

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Application Information

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IPC IPC(8): C22C21/18C22C1/03
Inventor 何小红
Owner 何小红