A kind of high-strength, high-plasticity and corrosion-resistant aluminum alloy layered composite material and preparation method thereof

A technology of aluminum alloy material and aluminum alloy layer, which is applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of instability, high production cost, and inability to produce, so as to improve the interface bonding strength and excellent durability. Corrosion performance, the effect of achieving strength and plasticity

Active Publication Date: 2021-05-18
UNIV OF SCI & TECH BEIJING
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  • Description
  • Claims
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Problems solved by technology

Although the interfacial bonding strength of aluminum alloy layered composites prepared by the traditional hot-rolling composite method is higher than that prepared by the traditional cold-rolling composite method, the interfacial bonding quality is still not high enough and unstable, and aluminum alloy coils cannot be used as raw materials for production. The coil weight of the obtained aluminum alloy layered composite material is small, the material utilization rate is low, the production cost is high, and it is difficult to produce an aluminum alloy layered composite material with a thinner overall thickness or a thinner cladding layer, and the uniformity and consistency of the cladding layer sex is difficult to guarantee
[0004] Therefore, in view of the problem that the traditional single aluminum alloy material cannot take into account the mechanical properties and corrosion resistance, an aluminum alloy layered composite material with high strength, high plasticity and excellent corrosion resistance is developed, and a low-cost, high-efficiency It is of great significance to efficiently prepare high-strength, high-plasticity, corrosion-resistant aluminum alloy layered composite materials

Method used

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  • A kind of high-strength, high-plasticity and corrosion-resistant aluminum alloy layered composite material and preparation method thereof

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preparation example Construction

[0032] The invention provides a method for preparing a high-strength, high-plasticity and corrosion-resistant aluminum alloy layered composite material. The preparation process is as follows: figure 1 shown. This preparation method comprises the steps:

[0033] Step 1: performing heat treatment on the aluminum alloy clad material and the aluminum alloy base material, the aluminum alloy clad material is subjected to O state heat treatment, and the aluminum alloy base material is subjected to O state or T4 state heat treatment;

[0034] Step 2: Use a louver, a grinding wheel or a wire brush to polish the surface to be compounded of the aluminum alloy cladding material and the aluminum alloy base material after surface cleaning and degreasing, to remove pollutants and oxidation on the surface to be compounded layer to obtain a clean and rough surface to be compounded, and the direction of the grinding stripes formed by the grinding treatment is perpendicular to the rolling direc...

Embodiment 1

[0047] Preparation of high-strength, high-plasticity and corrosion-resistant AA3003 / AA6061 / AA3003 aluminum alloy layered composites.

[0048] The 1mm thick AA3003 slab and the 6mm thick AA6061 slab were annealed to make them into the O state. The annealing system was 420°C for 0.5h and then air cooled; the AA3003 slabs and The surface to be compounded of AA6061 slab is mechanically polished to remove pollutants and oxide layers on the surface to be compounded, and a clean and rough surface to be compounded is obtained. The direction of the grinding stripes formed by the grinding process is perpendicular to the rolling direction; The AA3003 slab and AA6061 slab are stacked and placed in the order of AA3003 / AA6061 / AA3003, and the two sides of the head of the AA3003 slab and AA6061 slab are riveted and fixed with aluminum rivets to obtain a combined blank, AA3003 slab and AA6061 slab The length and width of the billet are equal; 3 pairs of rolls are used to carry out single-pass ...

Embodiment 2

[0050] Preparation of high-strength, high-plasticity and corrosion-resistant AA1100 / AA6063 / AA3A21 aluminum alloy layered composites.

[0051] The 1mm-thick AA1100 slab and the 2mm-thick AA3A21 slab were annealed to make them into O state. The annealing system was 420°C for 0.5h and then air-cooled. The 5mm-thick AA6063 slab was subjected to solution-aging treatment to make it It becomes T4 state, and the solid solution-aging system is 520°C for 40 minutes and quenching, then natural aging for 100 hours; use a wire brush to mechanically polish the surface of the AA1100 slab, AA3A21 slab and AA6063 slab to be composited after surface cleaning and degreasing, and remove Pollutants and oxide layers on the surface to be compounded to obtain a clean and rough surface to be compounded, and the direction of the grinding stripes formed by the grinding treatment is perpendicular to the rolling direction; the AA1100 slab, AA3A21 slab and AA6063 slab to be compounded surface treated accord...

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Abstract

The invention discloses a high-strength, high-plasticity, corrosion-resistant aluminum alloy layered composite material and a preparation method thereof, belonging to the technical field of aluminum alloy layered composite materials. The high-strength, high-plasticity and corrosion-resistant aluminum alloy layered composite material is composed of a 1-series or 3-series aluminum alloy cladding material and a 6-series aluminum alloy base material. Anneal the aluminum alloy cladding material and the aluminum alloy base material, clean, degrease and polish the surface to be composited. The direction of the grinding stripes is perpendicular to the rolling direction. A high-strength, high-plasticity, corrosion-resistant aluminum alloy layered composite material with a strong metallurgical interface is obtained by cold-rolling pre-compositing, heating, single-pass hot-rolling and compounding, and finally solution-aging treatment. The invention has low equipment requirements, simple process flow, short cycle, high production efficiency, low energy consumption and low cost, and the prepared aluminum alloy layered composite material has high strength, high plasticity and excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy layered composite materials, and in particular relates to a high-strength, high-plasticity, corrosion-resistant aluminum alloy layered composite material and a preparation method thereof. Background technique [0002] Aluminum alloy has low density, high specific strength, and excellent thermal conductivity, electrical conductivity, and corrosion resistance. It is the most widely used non-ferrous metal material. With the development of modern society and economy, the service environment of aluminum alloy materials is becoming more and more complex. Aluminum alloy materials serving in corrosive media not only require high strength and high plasticity, but also have excellent corrosion resistance. However, traditional single aluminum alloy materials often cannot have both good mechanical properties and corrosion resistance. The aluminum alloy layered composite material formed by laminating t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B3/00B21B37/00B21B37/46B21B37/74C22F1/04C21D9/00
CPCB21B1/38B21B3/00B21B37/00B21B37/46B21B37/74B21B2001/386B21B2003/001C21D9/0081C22F1/002C22F1/04
Inventor 刘雪峰白于良石章智张丹丹王浩
Owner UNIV OF SCI & TECH BEIJING
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