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A kind of high-strength composite aluminum alloy plate and preparation method thereof

An aluminum alloy sheet, high-strength technology, applied in the field of aluminum alloy materials, can solve the problems of poor plasticity of eutectic aluminum-silicon alloy materials, inability to carry out large deformation, plasticity decline, etc., to improve mechanical properties, good diffusion fusion effect, The effect of improving strength and hardness

Active Publication Date: 2021-04-06
马鞍山南实科技有限公司
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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 Al-Si alloys cannot be used for the preparation of high-strength composite aluminum alloy sheets

Method used

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  • A kind of high-strength composite aluminum alloy plate and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: Prepare high-strength composite aluminum alloy plates as follows:

[0035] 1. Raw material preparation:

[0036] The upper and lower aluminum alloy sheets adopt suction-cast eutectic aluminum-silicon alloy sheets with the same thickness, both of which have a thickness of 0.45cm. The chemical composition of the eutectic aluminum-silicon alloy material is: 7wt% Si, 0.3wt% Fe, 0.5wt% Cu, 0.5 wt% Mn, 0.1wt% Mg, 0.01wt% Zn, 0.1wt% P, the balance being Al. The melting and casting process of eutectic Al-Si alloy plate adopts Cu-P master alloy as modification agent, and it is obtained by vacuum suction casting after conventional smelting modification treatment.

[0037] The raw materials of the ceramic core layer are composed of the following mass fractions of raw materials: 6wt% SiO 2 ,, 5 wt% B 2 o 3 , 8wt% CaO, 1.5wt% MnO 2 , 2wt% MgO, 3wt% TiB 2 , 0.5 wt% CrO 3 , 1.5 wt% ZrO 2 , the other elements are all impurities, the content of a single element in ...

Embodiment 2

[0050] Embodiment 2: Prepare high-strength composite aluminum alloy plates as follows:

[0051] 1. Raw material preparation:

[0052] The upper and lower aluminum alloy plates adopt suction-cast eutectic aluminum-silicon alloy plates with the same thickness, both of which have a thickness of 1.8cm. The chemical composition of the eutectic aluminum-silicon alloy material is: 22wt% Si, 0.5wt% Fe, 1.0wt% Cu, 1.5 wt% Mn, 0.3wt% Mg, 0.11wt% Zn, 0.3wt% P, the balance being Al. The melting and casting process of eutectic Al-Si alloy plate adopts Cu-P master alloy as modification agent, and it is obtained by vacuum suction casting after conventional smelting modification treatment.

[0053] The raw materials of the ceramic core layer are composed of the following mass fractions of raw materials: 13wt% SiO 2 ,, 8 wt% B 2 o 3 , 10wt% CaO, 3.5wt% MnO 2 , 5wt% MgO, 5wt% TiB 2 , 1 wt% CrO 3 , 5.5wt% ZrO 2 , the other elements are all impurities, the content of a single element in o...

Embodiment 3

[0067] Embodiment 3: The high-strength composite aluminum alloy plate is prepared according to the following method:

[0068] 1. Raw material preparation:

[0069] The upper and lower aluminum alloy plates adopt suction-cast eutectic aluminum-silicon alloy plates with the same thickness, both of which have a thickness of 1.1cm. The chemical composition of the eutectic aluminum-silicon alloy material is: 14wt% Si, 0.4wt% Fe, 0.75wt% Cu, 1.0 wt% Mn, 0.2wt% Mg, 0.06wt% Zn, 0.2wt% P, the balance being Al. The melting and casting process of eutectic Al-Si alloy plate adopts Cu-P master alloy as modification agent, and it is obtained by vacuum suction casting after conventional smelting modification treatment.

[0070] The ceramic core material is composed of the following mass fractions: 9.5wt% SiO 2 ,, 6.5 wt% B 2 o 3 , 9wt% CaO, 2.5wt% MnO 2 , 3.5wt% MgO, 4wt% TiB 2 , 0.75 wt% CrO 3 , 3.5 wt% ZrO 2 , the other elements are all impurities, the content of a single element i...

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Abstract

The invention discloses a high-strength composite aluminum alloy sheet and a preparation method thereof. The suction-cast 7-22wt% eutectic aluminum-silicon alloy sheet is fully utilized as an outer interlayer, and the low-temperature co-fired ceramic oxide mixture powder sintered product is used as a ceramic core layer. Laser scanning sintering is carried out to form a sandwich structure without rolling, the diffusion and fusion effect of the component interface is good, and the overall bonding degree is high; taking advantage of the high strength of the eutectic aluminum-silicon alloy plate, combined with the ceramic core layer and friction stir processing surface strengthening, it is greatly strengthened Hardness and strength of aluminum alloy composite sheet. Both the ceramic core raw material and the stirred process filler contain SiO 2 , B 2 O 3 , MnO 2 , TiB 2 , CrO 3 , ZrO 2 High-hardness ceramic oxide raw materials, after high-temperature sintering, play the role of connecting and hardening the supporting framework, further improving the overall strength of the composite plate. The ceramic film layer deposited by micro-arc oxidation can improve the wear resistance and corrosion resistance of the composite plate, so that the application field of the invention is wide.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to a high-strength composite aluminum alloy 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 propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/01B32B33/00B32B3/08B23K26/352B23K26/146B23K26/14B23K20/12B02C17/10B02C23/08B02C25/00C21D9/00C22C21/04C22F1/043C25D11/08
CPCB02C17/10B02C23/08B02C25/00B23K20/122B23K26/14B32B3/085B32B15/016B32B33/00B32B2250/02B32B2255/06B32B2255/20B32B2307/54B23K26/146B23K26/352B23K2103/10C21D9/0081C22C21/04C22F1/043C25D11/026C25D11/08
Inventor 赵文娟孙道妹伍和龙吴辉
Owner 马鞍山南实科技有限公司