A kind of preparation method of la-b containing high-strength and high-conductivity aluminum alloy and medium-thick plate

An aluminum alloy and high-conductivity technology, which is applied in the field of preparation of La-B-containing high-strength and high-conductivity aluminum alloys and their medium-thick plates, can solve problems such as hindering electron movement and reducing electrical conductivity, so as to reduce scattering, improve electrical conductivity, and ensure The effect of synchronous improvement

Active Publication Date: 2021-06-29
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy composition and the precipitation form of the second phase have a great influence on the mechanical properties and electrical conductivity. The increase of the alloy composition reduces the electrical conductivity of the material, but can improve the strength; the precipitation form of the second phase has a great influence on the lattice distortion of the microstructure Dislocations and dislocations have a greater impact, while lattice distortion and dislocations cause scattering effects on electron movement, hinder electron movement, and reduce electrical conductivity

Method used

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  • A kind of preparation method of la-b containing high-strength and high-conductivity aluminum alloy and medium-thick plate
  • A kind of preparation method of la-b containing high-strength and high-conductivity aluminum alloy and medium-thick plate

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Effect test

Embodiment 1

[0039] A preparation method for a high-strength and high-conductivity aluminum alloy plate containing La-B, the operation steps are as follows:

[0040] (1) Melting: use industrial-grade aluminum ingots with a purity of 99.85%, Al-La master alloy, Al B 3 The master alloy is used as the raw material, and the Al-La master alloy is added for purification treatment, and the AlB 3 The master alloy is subjected to boronization treatment, and the industrial grade aluminum ingot with a purity of 99.85% and elements other than the B element and the La element are mixed according to the corresponding weight percentages in Table 1, and then the Al-La master alloy is added for smelting to make the material Melting, smelting temperature is 760°C, heat preservation for 4 to 5 hours, to obtain molten aluminum;

[0041] (2) Purification, degassing and filtration: the temperature of the molten aluminum obtained in step (1) is kept at 760°C, after the Al-La master alloy is completely melted, k...

Embodiment 2

[0051] A preparation method for a high-strength and high-conductivity aluminum alloy plate containing La-B, the operation steps are as follows:

[0052] (1) Melting: use industrial-grade aluminum ingots with a purity of 99.85%, Al-La master alloy, Al B 3 The master alloy is used as the raw material, and the Al-La master alloy is added for purification treatment, and the AlB 3 The master alloy is subjected to boronization treatment, and the industrial grade aluminum ingot with a purity of 99.85% and elements other than the B element and the La element are mixed according to the corresponding weight percentages in Table 1, and then the Al-La master alloy is added for smelting to make the material Melting, smelting temperature is 770°C, heat preservation for 3-4 hours, to get molten aluminum;

[0053] (2) Purification, degassing and filtration: the temperature of the aluminum liquid obtained in step (1) is kept at 770°C, after the Al-La master alloy is completely melted, keep it...

Embodiment 3

[0063] A preparation method for a high-strength and high-conductivity aluminum alloy plate containing La-B, the operation steps are as follows:

[0064] (1) Melting: use industrial-grade aluminum ingots with a purity of 99.85%, Al-La master alloy, Al B 3 The master alloy is used as the raw material, and the Al-La master alloy is added for purification treatment, and the AlB 3 The master alloy is subjected to boronization treatment, and the industrial grade aluminum ingot with a purity of 99.85% and elements other than the B element and the La element are mixed according to the corresponding weight percentages in Table 1, and then the Al-La master alloy is added for smelting to make the material Melting, smelting temperature is 770°C, heat preservation for 3-4 hours, to get molten aluminum;

[0065] (2) Purification, degassing and filtration: the temperature of the aluminum liquid obtained in step (1) is kept at 770°C, after the Al-La master alloy is completely melted, keep it...

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Abstract

The invention discloses a high-strength and high-conductivity aluminum alloy containing La-B, which is composed of the following elements in terms of mass percentage: Si=0.5-0.6%, Mg=0.6-0.8%, B=0.1-0.3%, La=0.05- 0.2%, others are Al and some unavoidable impurity elements. The preparation method of the thick plate: (1) smelting; (2) purification, degassing and filtration; (3) casting; (4) soaking heat treatment; (5) sawing, milling; (6) preheating; (7) ) rolling; (8) solution quenching; (9) stretching; (10) aging. Through the optimization of the alloy composition and the optimization of processes such as casting, rolling, failure, etc., the present invention simultaneously improves the mechanical strength and electrical conductivity of the aluminum alloy, and improves the electrical conductivity of the material.

Description

technical field [0001] The invention relates to a preparation method of an aluminum alloy and a medium-thick plate, in particular to a preparation method of a La-B-containing high-strength and high-conductivity aluminum alloy and a medium-thick plate. Background technique [0002] Aluminum alloy is widely used in the electrical field for conductive materials, conductive electrodes, conductive base materials, etc. because of its good electrical conductivity, weather resistance, polishability, and mechanical strength. Industrial conductive base materials require plates to have high electrical conductivity. At the same time, it should have sufficient mechanical strength. Components, impurities, and structural defects in the manufacturing process of conventional aluminum alloy sheets will affect the electrical conductivity of the material. [0003] In order to meet the actual needs of industrial conductive base materials, aluminum alloy conductive plates have both high electric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/05
CPCC22C1/026C22C1/03C22C21/08C22F1/002C22F1/05
Inventor 周伟莫宇飞向晶周文标苏智琦李剑黄亮
Owner 广西南南铝加工有限公司
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