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Method for preparing metal layered micro-gradient composite material

A composite material and metal composite plate technology, which is applied in the direction of metal rolling, rolling force/roll gap control, etc., to achieve the effect of simple process and broad application prospect.

Inactive Publication Date: 2015-03-25
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is still room for improvement in the bonding quality of the metal bonding interface of the metal laminated composite sheet in the prior art

Method used

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  • Method for preparing metal layered micro-gradient composite material
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  • Method for preparing metal layered micro-gradient composite material

Examples

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Embodiment 1

[0025] A method for preparing a metal layered microgradient composite material, comprising the following steps:

[0026] 1) Pre-treatment of metal sheets: prepare two kinds of metal sheets, which are denoted as sheet metal I and sheet metal II respectively. Sheet metal I and sheet metal II have the same or similar thickness. In the embodiment, the metal plate I is a soft metal with a thickness of about 1-3 mm; the metal plate II is a hard metal with a thickness of about 1-3 mm. . Sheet metal Ⅰ and sheet metal Ⅱ belong to the same alloy series, but the contents of the main alloying elements are different.

[0027] Preferably, the difference in the main alloying elements of the two sheets is significant. For example, the metal plate I is selected from industrial pure aluminum 1100 or industrial pure aluminum 1050; the metal plate II is selected from aluminum alloy 7050 or aluminum alloy 7075.

[0028] For example, the content (%) of alloying elements in industrial pure alumi...

Embodiment 2

[0047]Select metal plates made of the same series of aluminum alloys. The material of metal plate I is industrial pure aluminum 1100, and the material of metal plate II is high-strength aluminum alloy 7075. The thickness of metal plate Ⅰ and metal plate Ⅱ are both 1 mm, the content of alloy elements in the former is low, and the content of alloy elements in the latter is high. Perform annealing pretreatment on metal plate I and metal plate II, metal plate I1100 was annealed at 300 ° C for 1 h, metal plate II 7075 was annealed at 350 ° C for 2 h, and then taken out and cooled to room temperature. Surface treatment of the two metals, using a stainless steel brush with a diameter of 0.2mm for grinding to ensure uniform grinding, then rinse the surface with clean water, and dry the surface with a hair dryer. Follow the order of 1100 / 7075 / 1100 / 7075 / 1100 for 5-layer lamination, use aluminum nails to rivet and fix the four corners, and the total thickness of the 5-layer blank is abo...

Embodiment 3

[0049] Select metal plates made of the same series of aluminum alloys. The material of metal plate I is industrial pure aluminum 1050, and the material of metal plate II is high-strength aluminum alloy 7050. The thickness of metal plate Ⅰ and metal plate Ⅱ are both 1 mm, the content of alloy elements in the former is low, and the content of alloy elements in the latter is high. Perform annealing pretreatment on metal plate I and metal plate II, metal plate I1050 was annealed at 300 ° C for 1 h, metal plate II 7050 was annealed at 350 ° C for 2 h, and then taken out and cooled to room temperature. Surface treatment is carried out on the two metal plates, and the stainless steel brush with a diameter of 0.2mm is used for grinding to ensure that the grinding degree is uniform, and then the surface is rinsed with clean water, and the surface is dried with a hair dryer. Laminate 7 layers in the order of 1050 / 7050 / 1050 / 7050 / 1050 / 7050 / 1050, use aluminum nails to rivet and fix the fo...

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Abstract

The invention discloses a method for preparing a metal layered micro-gradient composite material. The method is mainly characterized in that the micro-gradient composite material is obtained through interface diffusion of alloy elements with the homologous-series heterogeneous multi-layer metal rolling bonding and heat processing technology. Metal with two kinds of alloy content is adopted for rolling bonding, and the to-be-bonded surfaces are grinded and washed; after the ends are fixed, rolling bonding is carried out, and a multi-layer heterogeneous metal composite board is prepared; then heat processing is carried out on the composite board, the temperature is kept for a certain period of time according to requirements, the alloy elements are diffused on interfaces, and therefore the layered micro-gradient composite material is obtained. According to the metal layered micro-gradient composite material prepared with the method, obvious micro-gradients in chemical components and performance exist nearby the interfaces, and the good interface bonding strength can be achieved; the number of the micro-gradient interfaces and the thickness of micro-gradient layers can be adjusted and controlled by changing the rolling bonding technology, the laminating order and the heat processing technology.

Description

technical field [0001] The invention relates to the technical field of processing metal layered composite plates, in particular to a plastic processing method for accelerating grain refinement. Background technique [0002] The rapid development of modern high-tech has caused continuous changes in the field of material science, resulting in the emergence of various new materials that adapt to the development of high-tech. Gradient materials just meet this need and become a new flower in the field of materials. Gradient materials are different from homogeneous materials from the material's structural point of view. It selects two (or more) materials with different properties, and continuously changes the composition and structure of the two (or more) materials to make the interface disappear, so that the properties of the material change with the composition and structure of the material. And changes slowly, forming a gradient material. [0003] Metal layered composite she...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B37/58
CPCB21B1/38B21B37/58B21B2001/386
Inventor 陈泽军王新筑沈宇腾王国军王强
Owner CHONGQING UNIV
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