Method for preparing 6061 aluminum alloy fine crystalline material

An aluminum alloy and fine-grained technology, which is applied in the field of preparation of 6061 aluminum alloy fine-grained materials, can solve problems such as coarse grains, poor mechanical properties, and mottled product surfaces, achieving excellent mechanical properties, stable performance, and eliminating unevenness sexual effect

Active Publication Date: 2018-06-29
GUANGDONG HOSHION IND ALUMINUM CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] When producing 6061 extrusion products according to conventional methods, only fibrous crystal structure or coarse recrystallization structure can be produced
With the continuous improvement of product appearance requirements, the appearance and performance defects brought by these two organizations have been unable to be accepted by the market.
Coarse recrystallized structure Due to the coarse crystal grains, there are mottled phenomena on the surface of the oxidized product, and the mechanical properties are poor

Method used

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  • Method for preparing 6061 aluminum alloy fine crystalline material
  • Method for preparing 6061 aluminum alloy fine crystalline material
  • Method for preparing 6061 aluminum alloy fine crystalline material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3、 comparative example 1-3

[0031] A kind of 6061 aluminum alloy fine-grained material described in the present embodiment 1-3 is selected as a raw material of 6061 aluminum alloy rod with an outer diameter of 258mm, and is prepared by a conventional method in the aluminum alloy industry, that is, heating and melting the raw material, Alloying, refining, slag removal, standing still, degassing and filtering, semi-continuous water-cooled casting, homogenization treatment, mist cooling, and it is ready.

[0032] The composition of the above-mentioned aluminum alloy rods used as raw materials is shown in Table 1, which conforms to the GB / T 3190-2008 standard.

[0033] Table 1 Composition of 6061 aluminum alloy bars

[0034]

[0035]

[0036] After verification, it can be seen that the crystal form of the 6061 aluminum alloy rod prepared according to the above components and methods is fiber crystal, and the observation results of the typical profile section are as follows figure 2 shown.

[0037] A...

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Abstract

The invention provides a method for preparing a 6061 aluminum alloy fine crystalline material. The method comprises the following steps: (1) taking and heating a 6061 aluminum alloy bar; (2) loading the heated 6061 aluminum alloy bar to a machine, and extruding the bar at an extruding temperature of 220-370 DEG C under an extrusion ratio of 10-30; (3) cooling the extruded bar with water to room temperature; and (4) performing offline solid solution treatment: performing the offline solid solution treatment at 480-570 DEG C to obtain the 6061 aluminum alloy fine crystalline material. The preparation method can realize the transformation of the crystal grain type from a fiber crystal to recrystallization in order to form a fine recrystallized structure, and the fine recrystallized structurehas a beautiful appearance and excellent mechanical properties after being oxidized.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials and their manufacture, and in particular relates to a preparation method of 6061 aluminum alloy fine-grained materials. Background technique [0002] The main alloying elements of 6061 alloy are magnesium and silicon, which has good formability, weldability and machinability, and can still maintain good operability after annealing, and has excellent welding characteristics and electroplating properties, good Excellent corrosion resistance, high toughness, no deformation after processing, dense material without defects, easy polishing, easy coloring film, excellent oxidation effect and other excellent characteristics. Therefore, 6061 alloy is widely used in decoration, packaging, construction, transportation, electronics, aviation, aerospace, weapons and other industries. [0003] When producing 6061 extrusion products according to conventional methods, only fibrous crystal structure or coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047
Inventor 宋海海李建湘丁小理李正阳张伟波
Owner GUANGDONG HOSHION IND ALUMINUM CO LTD
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