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High-strength and high-conductivity wrought aluminum alloy and preparation method thereof

A technology of deforming aluminum alloy and high conductivity, applied in metal rolling, metal rolling, temperature control and other directions, can solve the problems of high energy consumption, complex process, long production cycle, etc., achieve simple operation process and reduce production cost , the effect of low production cost

Active Publication Date: 2021-10-22
广东华昌集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As the most widely used light metal structural material, aluminum alloy has broad development prospects in the field of power transmission; the traditional Al-Mg-Si series deformed aluminum alloy production process includes semi-continuous casting, homogenization heat treatment, extrusion, solution-aging Steps such as heat treatment, the process is complicated, the production cycle is long and the energy consumption is large

Method used

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  • High-strength and high-conductivity wrought aluminum alloy and preparation method thereof
  • High-strength and high-conductivity wrought aluminum alloy and preparation method thereof
  • High-strength and high-conductivity wrought aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The alloy composition of this example is Al-0.6Mg-0.4Si-0.2Fe-0.3Ni-0.1Cu-0.06B, using industrial pure aluminum, Al-10Mg, Al-20Si, Al-20Fe, Al-10Ni and Al- The 50Cu master alloy is prepared, and the composition is as follows by mass percentage: Mg: 0.6%; Si: 0.4%; Fe: 0.2%; Ni: 0.3%; Cu: 0.1%; B: 0.06%, and the rest is Al.

[0058] Compared with the comparative example, the main differences of the preparation process in this example are: the alloy element Ni is added; sub-rapid solidification is adopted in the casting preparation process, and the homogenization treatment process is canceled. The preparation process mainly includes: alloy smelting and melt treatment; alloy casting and sub-rapid solidification preparation, alloy rolling plastic forming, and alloy solution-aging heat treatment. The detailed process flow and its parameters are as follows:

[0059] (1) Alloy smelting and melt treatment

[0060] The weighed industrial pure aluminum is melted, and the meltin...

Embodiment 2

[0079] The element composition of the alloy in this example is the same as that in Example 1, except that the element content is slightly different. The composition of the alloy in this embodiment is: Mg: 0.8%; Si: 0.6%; Fe: 0.1%; Ni: 0.2%; Cu: 0.1%; B: 0.09%, and the rest is Al. The used raw material of compound alloy is identical with embodiment 1.

[0080] The alloy preparation process of this embodiment is basically the same as that of Embodiment 1, including: alloy smelting and melt treatment; alloy casting and sub-rapid solidification preparation, alloy rolling plastic forming, and alloy solution-aging heat treatment. The difference is that the preparation process parameters are different. details as follows:

[0081] (1) Alloy smelting and melt treatment

[0082] The weighed industrial pure aluminum is melted, and the melting temperature is 730°C. After all the industrial pure aluminum is melted, add Al-10Mg, Al-20Si, Al-20Fe and Al-50Cu master alloys. After the in...

Embodiment 3

[0093] The element composition of the alloy in this example is the same as that in Example 1, except that the element content is slightly different. The composition of the alloy in this embodiment is: Mg: 0.3%; Si: 0.2%; Fe: 0.3%; Ni: 0.5%; Cu: 0.1%; B: 0.05%, and the rest is Al. The used raw material of compound alloy is identical with embodiment 1.

[0094] The alloy preparation process of this embodiment is basically the same as that of Embodiment 1, including: alloy smelting and melt treatment; alloy casting and sub-rapid solidification preparation, alloy rolling plastic forming, and alloy solution-aging heat treatment. The difference is that the preparation process parameters are different. details as follows:

[0095] (1) Alloy smelting and melt treatment

[0096] Melt the weighed industrial pure aluminum with a melting temperature of 700°C. After all the industrial pure aluminum is melted, add Al-10Mg, Al-20Si, Al-20Fe and Al-50Cu master alloys. After the intermedi...

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Abstract

The invention discloses a high-strength and high-conductivity wrought aluminum alloy. The wrought aluminum alloy comprises the following alloy elements: 0.3 to 0.8% of Mg; 0.2 to 0.6% of Si; 0.1 to 0.3% of Fe; 0.2 to 0.5% of Ni; 0.05 to 0.3% of Cu; 0.05 to 0.2% of B; and the balance of Al. The invention further discloses a preparation method of the high-strength and high-conductivity wrought aluminum alloy. The preparation method comprises the specific steps of pure aluminum melting, basic alloying treatment, melt modification treatment, sub-rapid solidification, rolling plastic forming and solid solution-ageing heat treatment, the preparation process is simple, the cost is low, and the comprehensive performance is excellent. According to the method, the Ni element is adopted to improve the morphology and distribution of an iron-rich phase, precipitation of an Mg2Si phase is promoted, and the strengthening effect of the Mg2Si phase is achieved. According to the high-strength and high-conductivity wrought aluminum alloy, the defects are eliminated and the structure is improved by adopting sub-rapid solidification, rolling treatment and solid solution-ageing treatment, the mechanical property and the conductivity of the alloy are improved, the problem that the conductivity and the mechanical property in the alloy are mutually impeded is solved, and the high-strength and high-conductivity wrought aluminum alloy is obtained.

Description

technical field [0001] The invention relates to the technical field of deformed aluminum alloys, in particular to a deformed aluminum alloy with high strength and high electrical conductivity and a preparation method thereof. Background technique [0002] With the rapid development of power transmission technology, the requirements for the mechanical and conductive properties of conductive materials in the field of power transmission are also getting higher and higher. However, for the existing metal conductive materials, due to the influence of the metal's own strength and the microscopic mechanism of conductivity, the metal strength and conductivity are mutually restricted, that is, the better the strengthening effect, the lower the conductivity. [0003] The main strengthening mechanisms of metal materials include: solid solution strengthening, deformation strengthening, fine grain strengthening and second phase strengthening. According to the microscopic mechanism of me...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C21/08C22C1/03C22C21/00C22F1/043C22F1/047C22F1/04B21B3/00B21B37/00B21B37/74
CPCC22C21/04C22C21/08C22C21/00C22C1/026C22C1/03C22F1/043C22F1/047C22F1/04B21B3/00B21B37/00B21B37/74B21B2003/001
Inventor 杜军黄嘉俊郭加林周明君曾阳阳
Owner 广东华昌集团有限公司
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