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Aluminium alloy and preparation technology thereof

A preparation process, aluminum alloy technology, applied in the field of metal material smelting, can solve the problems of poor quenching residual stress relief, easy deformation, large quenching residual stress, etc., to reduce the sensitivity of stress corrosion cracking, refine grains, Effect of Fracture Toughness Improvement

Inactive Publication Date: 2018-04-27
朱旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the aluminum alloy produced by the prior art, the quenching residual stress elimination effect is not good, resulting in the defects that the produced aluminum alloy has a large quenching residual stress and is easily deformed during machining. The purpose of the present invention is to provide an aluminum alloy and its preparation process, which has It can effectively reduce the quenching residual stress, and the advantages of subsequent machining are not easy to deform

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An aluminum alloy and its preparation process described in this embodiment, in parts by weight, the aluminum alloy includes the following components: 80 parts of Al, 2 parts of Mg, 3 parts of Zn, 0.8 parts of Cu, 3 parts of Si, Cr 0.1 part, Ge 0.1 part, Zr 0.12 part.

[0022] The preparation process comprises the following steps:

[0023] (1) smelting, Al, Mg, Zn, Cu, Si, Cr, Ge and Zr are placed in the smelting furnace for smelting in parts by weight, and the temperature of the molten aluminum alloy in the smelting furnace is controlled at 650°C and kept warm. time is 40 minutes;

[0024] (2) Casting the alloy into a preheated mold to obtain an alloy ingot, the preheating temperature being 500°C;

[0025] (3) Under vacuum conditions, the aluminum alloy ingot is heated to above 500°C, kept for 2 hours, rapidly quenched into water at 60°C, and then naturally cooled to room temperature to obtain an aluminum alloy material;

[0026] (4) Put the aluminum alloy material i...

Embodiment 2

[0029] An aluminum alloy and its preparation process. In parts by weight, the aluminum alloy includes the following components: 85 parts of Al, 3 parts of Mg, 4 parts of Zn, 1.8 parts of Cu, 5 parts of Si, 0.3 parts of Cr, and 0.15 parts of Ge , Zr 0.14 parts.

[0030] The preparation process comprises the following steps:

[0031] (1) smelting, Al, Mg, Zn, Cu, Si, Cr, Ge and Zr are placed in the smelting furnace for smelting in parts by weight, and the temperature of the molten aluminum alloy in the smelting furnace is controlled at 750°C and kept warm. 80 minutes;

[0032] (2) Casting the alloy into a preheated mold to obtain an alloy ingot, the preheating temperature being 600°C;

[0033] (3) Under vacuum conditions, the aluminum alloy ingot is heated to above 500°C, kept for 6 hours, rapidly quenched into water at 100°C, and then naturally cooled to room temperature to obtain an aluminum alloy material;

[0034] (4) Put the aluminum alloy material in step (3) into a que...

Embodiment 3

[0037] An aluminum alloy and its preparation process. In parts by weight, the aluminum alloy includes the following components: 88 parts of Al, 4 parts of Mg, 5 parts of Zn, 2 parts of Cu, 5.5 parts of Si, 0.35 parts of Cr, 0.2 parts of Ge, Zr 0.15.

[0038] Its preparation technology is as embodiment 1.

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PUM

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Abstract

The invention discloses an aluminum alloy and a preparation process thereof, belonging to the technical field of metal material smelting. The aluminum alloy comprises the following components in parts by weight: 80-92 parts of Al, 2-6 parts of Mg, and 3-3 parts of Zn 7 parts, Cu 0.8-3.2 parts, Si 3-8 parts, Cr 0.1-0.5 parts, Ge 0.1-0.3 parts, Zr 0.12-0.18 parts. The invention provides an aluminum alloy and a preparation process thereof, which have the advantages of effectively reducing quenching residual stress and not being easily deformed in subsequent machining.

Description

technical field [0001] The invention belongs to the technical field of metal material smelting, and in particular relates to an aluminum alloy and a preparation process thereof. Background technique [0002] Aluminum alloy is an alloy assembly based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. Cast aluminum alloys can be divided into aluminum-silicon alloys, aluminum-copper alloys, aluminum-magnesium alloys, aluminum-zinc alloys and aluminum-rare-earth alloys according to their chemical composition. Among them, aluminum-silicon alloys have simple aluminum-silicon alloys, which cannot be strengthened by heat treatment and have low mechani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C21/10C22C21/18C22C1/02C22F1/043C22F1/047C22F1/053C22F1/057C22F1/02
CPCC22C21/02C22C1/026C22C21/08C22C21/10C22C21/14C22C21/16C22C21/18C22F1/002C22F1/02C22F1/043C22F1/047C22F1/053C22F1/057
Inventor 朱旭
Owner 朱旭
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