Al-Mg-Si-Cu-Mn-Er alloy material and preparation method thereof

A technology of al-mg-si-cu-mn-er and al-mg-si-cu-mn, applied in the field of Al-Mg-Si-Cu-Mn-Er alloy material and its preparation, can solve the unseen Any problems such as reports, to achieve the effect of uniform grain size distribution, improved comprehensive performance, and low production cost

Inactive Publication Date: 2014-08-20
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Al-Mg-Si-Cu-Mn-Er alloy material and preparation method thereof
  • Al-Mg-Si-Cu-Mn-Er alloy material and preparation method thereof
  • Al-Mg-Si-Cu-Mn-Er alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment prepares Al-Mg-Si-Cu-Mn-0.15Er alloy material according to the following steps:

[0042] Step 1: Preparation of Alloy Ingot

[0043] 1a, ingredients: according to the mass percentage of 97.45% Al, 0.9% Mg, 0.6% Si, 0.7% Cu, 0.2% Mn and 0.15% Er, weigh 1142.5g metal Al (purity is 99.99%), 23.2gAl-50.38% Mg master alloy, 71.4gAl-10.92%Si master alloy, 25gAl-10.4%Mn master alloy, 18.2gAl-50.02%Cu master alloy and 19.7gAl-9.92%Er master alloy are batched, and the total mass of the batch is 1300g;

[0044] 1b. Melting: First, add metal 1142.5g Al, 25g Al-Mn master alloy, 71.4g Al-Si master alloy and 18.2g Al-Cu master alloy as raw material group A into a crucible preheated to 280°C, and heat to 730°C, constant temperature until raw material group A softens and collapses (5 minutes in this embodiment), sprinkle 6.5g of covering agent on the surface of raw material group A; continue to keep constant temperature until raw material group A is completely melted, ...

Embodiment 2

[0057] This embodiment prepares the Al-Mg-Si-Cu-Mn-0.3Er alloy material according to the same steps as in Example 1, the difference is that in step 1a, 97.3% Al, 0.9% Mg, 0.6% Si, 0.7% Cu, 0.2 The mass percent of %Mn and 0.3% Er, weighing 1122.8g metal Al (purity is 99.99%), 23.2gAl-50.38%Mg master alloy, 71.4gAl-10.92%Si master alloy, 25gAl-10.4%Mn master alloy, 18.2 gAl-50.02%Cu master alloy and 39.4gAl-9.92%Er master alloy are batched, and the total mass of the batch is 1300g;

[0058] Carry out room temperature tensile test to Al-Mg-Si-Cu-Mn-0.3Er alloy material by the same method of embodiment 1, gained mechanical property index: tensile strength is 402MPa, yield strength is 378MPa, elongation is 26.27%, See Table 1 for details.

Embodiment 3

[0060] This embodiment prepares the Al-Mg-Si-Cu-Mn-0.45Er alloy material according to the same steps as in Example 1, the difference is that in step 1a, 97.15% Al, 0.9% Mg, 0.6% Si, 0.7% Cu, 0.2 The mass percentage of %Mn and 0.45% Er, weighing 1103.1g metal Al (purity is 99.99%), 23.2gAl-50.38%Mg master alloy, 71.4gAl-10.92%Si master alloy, 25gAl-10.4%Mn master alloy, 18.2 gAl-50.02%Cu master alloy and 59.1gAl-9.92%Er master alloy are batched, and the total mass of the batch is 1300g;

[0061] Carry out the tensile test at room temperature to Al-Mg-Si-Cu-Mn-0.45Er alloy material by the same method of embodiment 1, gained mechanical property index: tensile strength is 394MPa, yield strength is 369MPa, elongation is 24.48%, See Table 1 for details.

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Abstract

The invention discloses an Al-Mg-Si-Cu-Mn-Er alloy material and a preparation method thereof. The alloy material is characterized by containing rare earth Er of which the mass percentage is 0.15%-0.45%. According to the alloy material and the preparation method disclosed by the invention, since rare earth Er of which the mass percentage is 0.15%-0.45% is added into the Al-Mg-Si-Cu-Mn alloy material, the contents of other alloying elements are reasonably designed, and a reasonable melting process and rapid solidification technology are adopted and repeated rolling and a suitable heat treatment are carried out, and thus the Al-Mg-Si-Cu-Mn-Er alloy material with uniform and fine microstructure is prepared; the obtained material has the advantages of relatively high plasticity and strength, tensile strength not less than 388MPa and elongation not less than 24%.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metals, in particular to an Al-Mg-Si-Cu-Mn-Er alloy material and a preparation method thereof Background technique [0002] Aluminum alloy has low density, high strength, easy processing, and good corrosion resistance. It is widely used in aerospace, transportation and other fields. It is the most widely used alloy in light metals, and its usage is second only to steel. In aerospace, marine, transportation and other fields, using aluminum alloy instead of steel is an effective way to reduce energy consumption. 6xxx series aluminum alloys (Al-Mg-Si alloys) have low density, excellent weldability and corrosion resistance, high impact toughness and easy processing and forming, and have always been a research hotspot for material scientists. [0003] In the new century, with the continuous advancement of science and technology, in order to further adapt to the comprehensive performance requiremen...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22F1/047
Inventor 陈文琳吴跃高妍
Owner HEFEI UNIV OF TECH
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