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High-strength and high-toughness multi-element Al-Cu alloy and preparation method and application thereof

A high-strength, high-toughness, alloying technology, applied in the field of multi-component Al-Cu alloy materials, can solve the problem that Al-Cu alloy materials cannot meet the performance requirements of high-strength and high-toughness materials for bullet casings, and achieve micro-alloying efficiency and huge economy. Effective and practical effect

Active Publication Date: 2017-12-15
安徽建业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A technical problem to be solved in the present invention is to provide a high-strength and high-toughness multi-element Al-Cu alloy for the Al-Cu alloy material prepared by the traditional method that cannot meet the high-strength and high-toughness performance requirements of the bullet casing material. Ratio, based on the Al-Cu alloy system for micro-alloying composition design, combined with 3D spray forming-rapid solidification technology to prepare high-strength and high-toughness multi-component Al-Cu alloy materials for lightweight shells

Method used

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  • High-strength and high-toughness multi-element Al-Cu alloy and preparation method and application thereof
  • High-strength and high-toughness multi-element Al-Cu alloy and preparation method and application thereof
  • High-strength and high-toughness multi-element Al-Cu alloy and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] In the method for preparing a high-strength and high-toughness multi-component Al-Cu alloy provided in this example, the raw material is heated into a molten state, and then sprayed by an aluminum alloy spray forming equipment to form a multi-component Al-Cu alloy. The multi-component Al-Cu alloy is composed of Al , Cu, Mn, Ni, V, Sc and impurity Si, Fe elements. It consists of the following alloy components in mass percentage: as shown in Table 1. Pure aluminum, Al-40Cu, Al-30Mn, Al-10Ni, Al-5V and Al-5Sc master alloys are used as raw materials, and the sum of all the above alloy components is 100%.

[0065] Specifically include the following steps:

[0066] S1. Take pure aluminum with a purity of 99.98% and place it in a smelting furnace, and heat it at 800°C until all of it becomes molten;

[0067] S2. Add Al-40Cu, Al-30Mn, Al-10Ni, Al-5V and Al-5Sc master alloys in sequence, lower the temperature to 720°C, stir thoroughly, and let stand for 15-25min; The method o...

Embodiment 2

[0071] In the method for preparing a high-strength and high-toughness multi-component Al-Cu alloy provided in this example, the raw material is heated into a molten state, and then sprayed by an aluminum alloy spray forming equipment to form a multi-component Al-Cu alloy. The multi-component Al-Cu alloy is composed of Al , Cu, Mn, Ni, V, Sc and impurity Si, Fe elements. It consists of the following alloy components in mass percentage: as shown in Table 1. Pure aluminum, Al-40Cu, Al-30Mn, Al-10Ni, Al-5V and Al-5Sc master alloys are used as raw materials, and the sum of all the above alloy components is 100%.

[0072] The specific production steps are the same as in Example 1, except that the melting temperature in step S1 is 820°C, and in step S2, the temperature of the master alloy is lowered to 700°C, and then the anhydrous The method of high-purity nitrogen to remove slag, the time is 60min; the rest of the steps are the same as in Example 1. Prepare the deposition blank o...

Embodiment 3

[0074] In the method for preparing a high-strength and high-toughness multi-component Al-Cu alloy provided in this example, the raw material is heated into a molten state, and then sprayed by an aluminum alloy spray forming equipment to form a multi-component Al-Cu alloy. The multi-component Al-Cu alloy is composed of Al , Cu, Mn, Ni, V, Sc and impurity Si, Fe elements. It consists of the following alloy components in mass percentage: as shown in Table 1. Pure aluminum, Al-40Cu, Al-30Mn, Al-10Ni, Al-5V and Al-5Sc master alloys are used as raw materials, and the sum of all the above alloy components is 100%.

[0075] The specific production steps are the same as in Example 1, except that the melting temperature in step S1 is 840°C, the temperature of nitrogen in step S3 is -15°C, and the injection temperature of the alloy melt is 700°C; the remaining steps Same as Example 1. Prepare the deposition blank of spray forming multi-element Al-Cu alloy, the size of the deposition bl...

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Abstract

The invention discloses a preparation method of a high-strength and high-toughness multi-element Al-Cu alloy. The preparation method comprises the following steps: raw materials is heated into a molten state, spray forming process is carried out through spray forming equipment, so that the multi-element Al-Cu alloy is formed, and the multi-element Al-Cu alloy is composed of Al, Cu, Mn, Ni, V, Sc, impurity Si and Fe. According to the preparation method, the high-strength and high-toughness multi-element Al-Cu alloy material for a lightweight cartridge case is prepared through the proportion of the raw material components, based on the micro-alloying component design of a Al-Cu alloy system and by combining 3d spraying forming-rapid solidification technology; the high-strength high-toughness multi-element Al-Cu alloy material has the advantages that crystal grains are fine, the structure is uniform, and the high-strength and high-toughness performance is achieved; according to the structure and the performance of the multi-element Al-Cu alloy, a reasonable cartridge case preparation technology is selected so that the use requirements of various lightweight cartridge cases can be met, and the Al-Cu alloy material can also be applied to a shell and a launching component of a short-range, medium-range and even a remote missile; and the Al-Cu alloy material has huge economic benefits.

Description

technical field [0001] The invention relates to the field of multi-element Al-Cu alloy materials, more specifically, relates to a high-strength and high-toughness multi-element Al-Cu alloy and its preparation method and application. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Because of its low density and relatively high strength, which is close to or exceeds that of ordinary steel, it has good plasticity, excellent electrical conductivity, thermal conductivity, and corrosion resistance. Processed into various profiles, it has been widely used in aerospace, construction machinery and marine ships and other fields. [0003] With the rapid development of my country's aircraft carrier and the enhancement of the combat capability in the open sea, the traditional iron and copper shells can no longer meet the requirements of the navy and air force for bullets with light weight, corrosion resistance, l...

Claims

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Application Information

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IPC IPC(8): C22C21/12C22C1/03C22F1/057B22F3/115
CPCB22F3/115C22C1/026C22C1/03C22C21/12C22F1/057
Inventor 范才河曾广胜陈喜红刘咏刘彬周承商周新鹏
Owner 安徽建业科技有限公司
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