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Al-Mg-Si-Cu alloy and preparation method thereof

An alloy and percentage technology, applied in the field of Al-Mg-Si-Cu alloy and its preparation, can solve the problems of surface roughness and cracking, achieve high elongation, improve material elongation, and eliminate negative effects.

Active Publication Date: 2018-02-09
GUANGDONG HOSHION IND ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If an aluminum alloy with the above mechanical properties is used for large deformation flanging and CNC processing, due to its shortcomings in mechanical properties such as tensile strength and elongation strength and its grain structure characteristics, cracking and surface cracking are prone to occur during processing. rough condition

Method used

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  • Al-Mg-Si-Cu alloy and preparation method thereof
  • Al-Mg-Si-Cu alloy and preparation method thereof
  • Al-Mg-Si-Cu alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-4

[0037] A kind of Al-Mg-Si-Cu alloy described in the present embodiment 1-4, by mass percentage, includes the components as shown in Table 1, and the individual content of other impurities should not exceed 0.05%, and the total amount should not exceed 0.15% , the balance being Al.

[0038] components

Example 1

Example 2

Example 3

Example 4

Si

0.65％

0.70％

0.68％

0.60％

Mg

1.00％

1.10％

1.00％

1.05％

Fe

0.06％

0.10％

0.09％

0.10％

Cu

0.20％

0.15％

0.16％

0.13％

Cr

0.06％

0.08％

0.08％

0.04％

mn

0.03％

0.003％

0.01％

0.05％

Zn

0.08％

0.10％

0.12％

0.07％

Ti

0.02％

0.03％

0.03％

0.02％

Mn+Cr%

0.09％

0.083％

0.09％

0.09％

[0039] Table 1

[0040] The raw materials for preparing the above-mentioned Al-Mg-Si-Cu alloy are as follows:

[0041] Aluminum ingots: Al99.7 aluminum ingots are used, and the mass percentage of A...

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Abstract

The invention provides an Al-Mg-Si-Cu alloy which is high in strength and elongation. The Al-Mg-Si-Cu alloy comprises, by mass, 0.60-0.80% of Si, 1.05-1.15% of Mg, no more than 0.10% of Fe, 0.10-0.20%of Cu, 0.03-0.09% of Cr, no more than 0.05% of Mn, 0.05-0.12% of Zn, 0.01-0.04% of Ti, and the balance Al. The Al-Mg-Si-Cu alloy which is high in strength and elongation is designed through the reasonable proportion of the alloy components, the tensile strength of the prepared alloy material is 310MPa or over, the elongation is 18% or over, and the alloy material has good machinability such as the flanging performance and the turning performance.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials and its manufacture, and in particular relates to an Al-Mg-Si-Cu alloy and a preparation method thereof. Background technique [0002] Al-Mg-Si-Cu alloy is one of the most widely used aluminum alloy materials at present, accounting for more than 20% of the total aluminum application. Manufacture of rivets is one of the application fields of Al-Mg-Si-Cu alloy. In its manufacturing process, it needs to go through a lot of machining to meet the needs, including flanging, forging, CNC processing, etc., which often go through the center type CNC lathe Continuous processing requires strict dimensional accuracy of materials. According to the requirements of the national standard GB / T6892 for general industrial aluminum and aluminum alloy extrusion profiles, the mechanical properties of 6061-T6 aluminum alloy R m -Rp 0.2 -A 50mm should be 260-240-8%, respectively, and the mechanical properties ...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/06C22F1/047
CPCC22C1/06C22C21/08C22F1/047
Inventor 丁小理李建湘刘经发罗杰
Owner GUANGDONG HOSHION IND ALUMINUM CO LTD
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