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Preparation method of high-strength and high-toughness thin strip aluminum of ultra-fine structure

A fine-structure, high-strength technology, applied in metal rolling, manufacturing tools, temperature control, etc., can solve the problems of complex ultra-fine-grained or nano-crystalline aluminum alloy process, difficult industrial application, and limited product size, so as to facilitate industrial application , low manufacturing cost and high production efficiency

Active Publication Date: 2020-04-10
上交(徐州)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of ultrafine or nanocrystalline aluminum alloys obtained by SPD methods such as HPT and ECAP is complicated, the production cost is high, and the size of the product is very limited due to the limitation of the mold, and the operation is difficult, so it is not easy to realize a wide range of industrial applications.

Method used

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  • Preparation method of high-strength and high-toughness thin strip aluminum of ultra-fine structure
  • Preparation method of high-strength and high-toughness thin strip aluminum of ultra-fine structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Taking the ordinary aluminum ingot in the industrial solid solution state as the initial material, the aluminum ingot may contain Si, Mn, Fe, Cu, Mg, Ti, Cr alloy elements and inevitable impurities, each of which is The mass percentage content does not exceed 1.0%, and the total amount of elements does not exceed 2.5%. The steps for preparing ultra-fine structure high-strength aluminum ribbon are as follows:

[0035] Step (1) Homogenization treatment: After sawing and milling the above aluminum casting billet or aluminum ingot, it is placed in a heat treatment furnace at 500°C for 7.0 hours to obtain a base material with homogeneous structure and properties for later rolling .

[0036] Step (2) Rough rolling: After cleaning the surface of the homogeneous aluminum cast slab, perform hot rolling, the hot rolling start-up temperature is 500°C, the final rolling temperature is 450°C, and the final rolling thickness is controlled at 20mm;

[0037] Step (3) Strong shear deformation...

Embodiment 2

[0042] Taking the ordinary aluminum ingot in the industrial solid solution state as the starting material, the mass percentage of Si, Mn, Fe, Cu, Mg, Ti, Cr and other alloying elements and inevitable impurities in the aluminum ingot shall not exceed 2.5%, The mass percentage content of each element does not exceed 0.5%. The steps for preparing ultra-fine structure high-strength aluminum ribbon are as follows:

[0043] Step (1) Homogenization treatment: After sawing and milling the above aluminum casting billet or aluminum ingot, it is placed in a heat treatment furnace at 580°C for 2.0 hours to obtain a base material with homogeneous structure and properties.

[0044] Step (2) Rough rolling: After cleaning the surface of the homogeneous aluminum cast slab, perform hot rolling, the hot rolling start-up temperature is 580°C, the final rolling temperature is 480°C, and the final rolling thickness is controlled at 20mm;

[0045] Step (3) Strong shear deformation rolling: rough-rolled alu...

Embodiment 3

[0050] Taking the ordinary aluminum ingot in the industrial solid solution state as the starting material, the mass percentage of Si, Mn, Fe, Cu, Mg, Ti, Cr and other alloying elements and inevitable impurities in the aluminum ingot shall not exceed 1.5%, The mass percentage content of each element does not exceed 0.3%. The steps for preparing ultra-fine structure high-strength aluminum ribbon are as follows:

[0051] Step (1) Homogenization treatment: After sawing and milling the aluminum casting billet or aluminum ingot, it is placed in a 450°C heat treatment furnace for 15.0 hours to obtain a base material with homogeneous structure and properties for later rolling.

[0052] Step (2) Rough rolling: After cleaning the surface of the homogeneous aluminum cast slab, perform hot rolling, the hot rolling start-up temperature is 450°C, the final rolling temperature is 430°C, and the final rolling thickness is controlled at 15mm;

[0053] Step (3) Strong shear deformation rolling: rough-...

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Abstract

The invention discloses a preparation method of high-strength and high-toughness thin strip aluminum of an ultra-fine structure, and the method comprises the following steps: homogenizing of an aluminum casting blank, rough rolling, strong shearing, deforming and rolling, asynchronous and synchronous mixing at a high speed, intermediate rolling, finish rolling and the like. The average grain sizeof the prepared thin strip aluminum of the ultra-fine structure is less than 500 nanometers, and the thin strip aluminum has high strength and good ductility and toughness. Compared with the prior art, the prepared thin strip aluminum is long in service life, simple in production process, low in manufacturing cost, capable of being achieved through common industrial equipment, high in production efficiency and convenient to apply industrially.

Description

Technical field [0001] The invention belongs to the technical field of metal aluminum profile processing, and specifically relates to a preparation method of ultra-fine structure high-strength and tough thin-band aluminum. Background technique [0002] Aluminum strip has light weight, high specific strength, good ductility, excellent corrosion resistance and excellent processing performance, and is widely used in many fields such as aerospace, chemical industry, automobile industry, modern construction and daily necessities. Modern industry is developing towards low energy consumption, high recycling rate and high use efficiency. The market demand for lightweight and high-strength aluminum and aluminum alloys is increasing. With the development of society, the requirements for material strength in practical applications are getting higher and higher. The application of aluminum and aluminum alloys in some occasions with high strength requirements is restricted. Improve the perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C22C21/00B21B1/26B21B37/16B21B37/56B21B37/74B21B45/00
CPCB21B1/26B21B37/16B21B37/56B21B37/74B21B45/004B21B2265/10C22C21/00C22F1/04
Inventor 付立铭单爱党
Owner 上交(徐州)新材料研究院有限公司
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