Method for processing an aluminum alloy to inhibit large grains from forming

A processing method and aluminum alloy technology, applied in the field of metal materials, can solve problems such as large changes in compressive stress and grain recrystallization, and achieve the effect of inhibiting grain growth

Inactive Publication Date: 2013-02-06
虞海香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the application of this type of material, especially in the process of casting or extrusion, the internal structure of the aluminum alloy will cause crystallization during the quenching process after forming due to a series of reasons such as large changes in compressive stress and large temperature rise. grain recrystallization

Method used

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Embodiment Construction

[0010] The technical solutions of the present invention are described below through specific examples, and the following examples are only for illustrating the present invention rather than limiting the scope of the present invention.

[0011] Raw material is prepared by following composition, and its composition comprises by mass percentage, the magnesium of 0.72%, the silicon of 1.2%, the manganese of 0.25%, the chromium of 0.05%, the copper of 0.35%, the iron of 0.21%, the titanium of 0.005%, the rest The amount is aluminum and unavoidable impurities. The above composition is smelted, and the smelting method is the prior art;

[0012] The above-mentioned components are melted and cast into aluminum alloy ingots, and die-casting and quenching are performed on the aluminum alloy ingots to obtain specified aluminum alloy profiles.

[0013] The die-casting quenching process is to heat the aluminum alloy ingot to 500-530°C and then carry out constant-temperature die-casting, wh...

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Abstract

The invention relates to a method for processing an aluminum alloy to inhibit large grains from forming. The aluminum alloy comprises, by mass, 0.72% of magnesium, 1.2% of silicon, 0,25% of manganese, 0.05% of chromium, 0.35% of copper, 0.21% of iron, 0.005% of titanium, and the balance aluminum and inevitable impurities. The components are melted and casted into alloy ingots, and the alloy ingots are subjected to die-casting and quenching to obtain prescribed aluminum alloy profiles. According to the method for processing the aluminum alloy inhibit large grains from forming, the growth of crystallized particle sizes can be inhabited, and the growth of particle sizes is inhabited through a specific processing technology.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to an aluminum alloy material processing method for suppressing the formation of large crystal grains. Background technique [0002] At this stage, aluminum alloy profiles are widely used for their light weight, high ductility, and even high strength. However, in the application of this type of material, especially in the process of casting or extrusion, the internal structure of the aluminum alloy will cause crystallization during the quenching process after forming due to a series of reasons such as large changes in compressive stress and large temperature rise. grain recrystallization. The grains in the tissue body grow excessively, forming coarse grains. This type of grain has a great influence on the mechanical properties, fatigue resistance, corrosion resistance and later processing of aluminum alloy materials. [0003] Therefore, in the field of profile processing, how to su...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22F1/043C21D1/18B22D17/00
Inventor虞海香
Owner虞海香