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A kind of reinforced aluminum alloy composite plate and preparation method thereof

A technology for aluminum alloy sheets and composite sheets, applied in the field of aluminum alloy materials, can solve the problems of poor plasticity, inability to carry out large deformation, and plasticity decline of eutectic aluminum-silicon alloy materials, and achieves good fluidity, good diffusion and fusion effect, The effect of increasing hardness

Active Publication Date: 2021-12-10
龙泉市万嘉铝业型材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain a good interface composite effect and forming effect, the processing of composite plates requires multi-pass rolling. During multi-pass rolling, there are obvious undulations between layers, and even necking and fracture begin to appear. The manufacturing process requires that the cast aluminum alloy material has good plasticity and high elongation, but the eutectic aluminum-silicon alloy material with a silicon content greater than 7% has poor plasticity. Although the strength increases with the increase in the silicon content, the plasticity decreases significantly. Rolling with a large amount of deformation cannot be performed, so high-performance eutectic aluminum-silicon alloys cannot be used for the preparation of strengthened aluminum alloy composite plates

Method used

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  • A kind of reinforced aluminum alloy composite plate and preparation method thereof
  • A kind of reinforced aluminum alloy composite plate and preparation method thereof
  • A kind of reinforced aluminum alloy composite plate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: prepare the strengthened aluminum alloy composite plate according to the following method:

[0035] 1. Raw material preparation and prefabrication:

[0036] The upper and lower aluminum alloy plates adopt suction-cast eutectic aluminum-silicon alloy plates with the same thickness, with a thickness of 6.5mm. The chemical composition of the aluminum-silicon alloy material is: 2wt% Si, 0.3wt% Lanthanum, 0.4wt% Cu, 0.6wt% Cr, 2.5wt% Mg, 0.1wt% Ti, 0.04wt% B, and the balance is Al; the eutectic aluminum-silicon alloy sheet melting and casting process uses 0.3wt% composite sodium salt as a modifier, and vacuum suction casting after conventional melting and modification have to. Some rare earth elements can significantly improve the effect of refinement and modification, improve the mechanical properties, and increase the plasticity of aluminum alloy materials.

[0037] The solder is composed of the following mass fractions of raw materials: 6wt% BN, 8wt% Si 3...

Embodiment 2

[0050] Embodiment 2: Prepare the strengthened aluminum alloy composite plate according to the following method:

[0051] 1. Raw material preparation and prefabrication:

[0052] The upper and lower aluminum alloy sheets adopt suction-cast eutectic aluminum-silicon alloy sheets with the same thickness, with a thickness of 16mm. The chemical composition of the aluminum-silicon alloy material is: 23wt% Si, 0.5wt% Erbium, 1.5wt% Cu, 0.9wt% Cr, 4.9 wt% Mg, 0.5wt% Ti, 0.22wt% B, and the balance is Al; the melting and casting process of eutectic aluminum-silicon alloy plate uses 0.3wt% composite sodium salt as a modifier, and it is produced by vacuum suction casting after conventional melting and modification treatment .

[0053] The solder is composed of the following mass fractions of raw materials: 13wt% BN, 10wt% Si 3 N 4 , 5wt% AlN, 5wt% TiO 2 , 1wt% VC, 5.5wt% SiC, other elements are impurities, the content of a single element in other elements is ≤0.01wt%, the total amount...

Embodiment 3

[0066] Embodiment 3: Prepare the strengthened aluminum alloy composite plate according to the following method:

[0067] 1. Raw material preparation and prefabrication:

[0068] The upper and lower aluminum alloy sheets adopt suction-cast eutectic aluminum-silicon alloy sheets with the same thickness, the thickness is 10mm, and the chemical composition of the aluminum-silicon alloy material is: 12wt% Si, 0.4wt% neodymium, 1wt% Cu, 0.75wt% Cr, 3.7wt %Mg, 0.3wt% Ti, 0.13wt% B, and the balance is Al; the eutectic aluminum-silicon alloy sheet melting and casting process uses 0.3wt% composite sodium salt as a modifier, and is vacuum suction cast after conventional smelting and modification.

[0069] The solder is composed of the following mass fractions of raw materials: 9.5wt% BN, 9wt% Si 3 N 4 , 3.5wt% AlN, 4wt% TiO 2 , 0.75wt% VC, 3.5wt% SiC, other elements are impurities, the content of a single element in other elements is ≤0.01wt%, the total amount of impurities is ≤0.05wt...

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Abstract

The invention discloses a strengthened aluminum alloy composite plate and a preparation method thereof, which fully utilizes the aluminum-silicon alloy material covered by suction casting 2 to 23 wt% eutectic aluminum-silicon alloy material, and the composition of the aluminum alloy plate is composited The overall tensile strength and yield strength of the sheet are less affected. The surfaces of the upper and lower layers of eutectic aluminum-silicon alloy plates are sintered and embedded with strong and tough skeletons, and multiple parallel strengthening skeletons are formed on the surface. After the upper and lower layers of plates are welded together, the strong and tough skeletons form an angle of 45 to 90 degrees, which can complement each other to improve tensile strength. strength and yield strength. The two plates are welded by the pressure welding process of the brazing filler metal, without rolling, the diffusion and fusion effect of the component interface is good, and the overall bonding degree is high; the Al-Ni cladding layer can improve the wear resistance and corrosion resistance of the composite plate, making the composite plate more durable. The matrix of the inner layer composite plate is protected, so that the invention can be applied to various working conditions.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to a reinforced aluminum alloy composite plate and a preparation method thereof. Background technique [0002] The performance of a single aluminum alloy material is single, and the improvement of its mechanical properties by improving the casting process and post-casting processing technology is limited. In order to further improve the strength of aluminum alloy materials, laminated aluminum alloy composite materials have gradually developed into a high-performance, low-cost alternative material for aluminum alloys, which can reduce the amount of alloy used on the premise of meeting the strength of use, and can also be Under the same amount of aluminum alloy used, the mechanical properties are greatly improved. The performance of the laminated aluminum alloy composite panel has incomparable superiority of any component, and it is a combination of various excellent properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/01B32B3/08B32B37/00B32B33/00C22C21/02C22C21/08C22C21/00C22C32/00C22C29/02C23C4/06C23C4/129C22C30/00C22C19/05C23C4/18
CPCB32B15/016B32B3/08B32B37/00B32B33/00C22C21/02C22C21/08C22C21/003C22C32/0005C22C26/00C23C4/06C23C4/129C22C30/00C22C19/058C23C4/18C22C2026/005C22C2026/006C22C2026/008B32B2307/554B32B2307/714B32B2307/306B32B2307/54
Inventor 伍和龙孙道妹赵文娟吴辉
Owner 龙泉市万嘉铝业型材有限公司