Preparation method of high anti-elastic aluminum alloy plate

An aluminum alloy plate, anti-ballistic technology, applied in the field of preparation of high anti-elastic aluminum alloy plate, can solve the problems of stress corrosion cracking sensitivity, etc., achieve the effect of improving mechanical properties, excellent stress corrosion resistance, and improving battlefield survivability

Inactive Publication Date: 2019-04-12
JIANGSU HAORAN SPRAY FORMING ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

7A52 aluminum alloy has been successfully applied to tank parts, and has good strength, toughness and elastic resistance, but it has the disadvantage of being sensitive to stress corrosion cracking, so it is not suitable for use under corrosive conditions

Method used

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  • Preparation method of high anti-elastic aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In some illustrative embodiments, embodiment 1: a method for preparing a high anti-ballistic aluminum alloy plate, comprising the following steps:

[0036] S1: The aluminum alloy ingot is made into an aluminum alloy plate by extrusion; the aluminum alloy ingot is an aluminum alloy ingot produced by conventional high-temperature melting of raw materials and then using a conventional casting process.

[0037] The specific steps are:

[0038] S101: heating the aluminum alloy ingot with a diameter of 500mm to 440-450°C and keeping it warm for 10-12h;

[0039] S102: The preheating temperature of the extrusion die is 400-420°C, and the preheating temperature of the extrusion barrel is 420-430°C;

[0040] S103: placing the aluminum alloy ingot in the extrusion cylinder for extrusion at an extrusion speed of 0.2-0.3mm / s;

[0041] S103: extruding to obtain an aluminum alloy plate with a final extruded size of 30mm*710mm;

[0042] S2: heat-treating the aluminum alloy plate obt...

Embodiment 2

[0055]Embodiment 2:, by mass percentage, the chemical composition of the aluminum alloy ingot is as follows: Zn: 8.2%, Cu: 2.0%, Mg: 2.0%, Zr: 0.15%, CeO2: 0.1%, Fe≤0.10 %, Cr+Ti≤0.07%, and the balance is Al. The preparation method is the same as in Example 1.

Embodiment 3

[0056] Embodiment 3: Calculated by mass percentage, the chemical composition of the aluminum alloy ingot is as follows: Zn: 8.8%, Cu: 2.5%, Mg: 2.6%, Zr: 0.30%, CeO2: 0.3%, Fe≤0.10% , Cr+Ti≤0.07%, and the balance is Al. The preparation method is the same as in Example 1.

[0057] The finished product prepared by embodiment 1 is compared with existing 7A52 aluminum alloy for performance test:

[0058] The comparison of mechanical properties is shown in the table below:

[0059]

[0060] Ballistic performance comparison parts in the following table:

[0061]

[0062] Comparing 7A52 and the aluminum alloy prepared by the present invention, it can be found that the tensile strength of the aluminum alloy obtained by the present invention is 29.6% higher than that of the existing 7A52 aluminum alloy armor material, and the elongation is equivalent to that of the 7A52 aluminum alloy. The mechanical properties are obviously better than the existing aluminum alloy armor materi...

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Abstract

The invention provides a preparation method of a high anti-elastic aluminum alloy plate. The preparation method comprises the following steps that S1 an aluminum alloy ingot is prepared into an aluminum alloy plate through an extrusion method; according to the mass percent, the aluminum alloy ingot comprises the following chemical compositions including 8.2%-8.8% of Zn, 2.0%-2.5% of Cu, 2.0%-2.6%of Mg, 0.15%-0.30% of Zr, 0.1%-0.3% of CeO2 , not larger than 0.10% of Fe, not larger than 0.07% of the sum of Cr and Ti and the balance Al. The preparation method has the beneficial effects that theprepared aluminum alloy plate has ultra-high anti-elastic performance and excellent stress corrosion resistance. The battlefield survivability of armored vehicles can be improved, the weight of a vehicle body is reduced, and the mechanical performance is improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation technology, and in particular relates to a preparation method of a high anti-ballistic aluminum alloy plate. Background technique [0002] Aluminum alloy is one of the commonly used materials in armored vehicles. Its consumption is second only to armored steel. It is mainly used to prevent small-caliber projectiles and shrapnel, and is mostly used in light armored vehicles. Without reducing the anti-ballistic performance, the use of aluminum alloy armor instead of steel armor can greatly reduce the weight of the armored vehicle and improve the maneuverability of the armored vehicle. In addition, aluminum alloy has low density, good toughness, especially low temperature performance. And it has good machinability and welding performance. [0003] With the increasing power of anti-tank weapons and the emergence of special weapons, modern warfare has put forward higher requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053B21C23/06
CPCB21C23/06C22C21/10C22F1/002C22F1/053
Inventor 张学杰吕天民范曦郭书彦张豪
Owner JIANGSU HAORAN SPRAY FORMING ALLOY
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