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Preparation method of multi-grain-scale lamellar structure aluminum alloy

An aluminum alloy, strengthening layer technology, applied in mechanical equipment, heat exchange equipment, rotors, etc., can solve the problems of difficult to control interface oxidation, complex process, single mixed crystal material components, etc., to achieve large microstructure design directivity and The effect of flexibility

Inactive Publication Date: 2019-10-18
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the preparation of layered aluminum alloys by cumulative rolling, there are technically the following problems: (1) it is difficult to control the oxidation of the interface; (2) the plasticity of the material decreases after cumulative rolling; (3) the layered aluminum alloys The strengthening and toughening performance of composite materials has obvious directionality, which limits its application in many parts that require multi-directional force
However, the components of the mixed crystal material prepared in this way are relatively single, and the process is complicated

Method used

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  • Preparation method of multi-grain-scale lamellar structure aluminum alloy
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  • Preparation method of multi-grain-scale lamellar structure aluminum alloy

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0021] Such as Figure 1-5 As shown, taking solid AA8006 aluminum alloy and liquid Al-0.1Mg aluminum alloy as examples, detailed implementation and specific operations are given. The following examples involve three steps including: pretreatment, casting, plastic deformation, multi-grain scale, where:

[0022] Such as figure 1 As shown, the surface of the solid AA8006 aluminum alloy is chemically cleaned to remove oil and oxides on the surface, and then the surface is galvanized. The galvanized layer is electroplated, and the thickness of the zinc layer is 30 μm. The processed solid pure aluminum is preset in th...

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Abstract

The invention discloses a preparation method of a multi-grain-scale lamellar structure aluminum alloy. The preparation method comprises the steps of pretreatment, casting, plastic deformation, multi-grain scale formation and the like, two or more kinds of aluminum alloys with different alloy components are selected, solid-liquid embedding casting is carried out, and the multi-layer composite aluminum alloy is formed. Plastic deformation and subsequent annealing treatment are performed to form phases with different grain sizes between adjacent layers to obtain the multi-grain-scale reinforced lamellar structure aluminum alloy material.

Description

technical field [0001] The present invention relates to a preparation method of a multi-grain-scale strengthened lamellar structure aluminum alloy, specifically a method for preparing a large multi-grain-scale strengthened aluminum alloy by using an inlaid casting method, coupled with specific plastic deformation and heat treatment to control the microstructure The technology of laminate structure aluminum alloy. Background technique [0002] Aluminum has better characteristics than other non-ferrous metals and steel, such as low density, only 2.7g / cm 3 , about 1 / 3 of copper or steel; good corrosion resistance and weather resistance; good plasticity and processing properties. In addition, the high temperature performance, formability, machinability, riveting and surface treatment performance of aluminum are also relatively good. Therefore, aluminum has been widely used in various fields such as aerospace, navigation, aviation, automobiles, transportation, bridges, construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04B22D19/00
CPCB22D19/00B22D19/0081C22C1/026C22C21/00C22F1/04
Inventor 潘志驿周浩高波陈雪飞曹阳聂金凤李玉胜
Owner NANJING UNIV OF SCI & TECH
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