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Method for preparing composite material

A technology of composite materials and raw materials, which is applied in the field of preparation of composite materials, can solve the problems of coarse and rough grains, reduce ductility and strength, etc., achieve high interface bonding strength, increase the number of nuclei, and improve the internal structure.

Inactive Publication Date: 2018-09-28
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in situ endogenous Mg 2 Primary Mg in Si / Al Composite 2 Si phase, easy to form rough Chinese characters or dendrites, and the grains are relatively coarse, mostly sharp-edged, splitting the matrix, reducing its ductility and strength, and hindering its wide application

Method used

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  • Method for preparing composite material
  • Method for preparing composite material
  • Method for preparing composite material

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0032] figure 1 It is a method flowchart of a method for preparing a composite material provided by an embodiment of the present invention.

[0033] Such as figure 1 As shown, in one embodiment of the present invention, a kind of method for preparing composite material is provided, and this method comprises the following steps:

[0034] S1: Weigh the raw materials with a preset mass ratio and dry them.

[0035] S2: Co...

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Abstract

The embodiment of the invention discloses a method for preparing a composite material. The method is characterized by comprising the steps of weighing raw materials based on the preset mass ratio, anddrying the raw materials; controlling the smelting temperature of the raw materials; maintaining the temperature of the raw materials for preset time; melting the raw materials to obtain molten alloy; standing and refining the molten alloy; transferring the refined molten alloy in an electromagnetic field, and pouring; controlling the strength and direction of the electromagnetic field and the stirring time during pouring in order to electromagnetically stir the molten alloy; and then cooling the molten alloy to obtain a composite material casting. According to the method for preparing the composite material, the electromagnetic stirring technology is carried out, so that the compatibility of a base body and a reinforcement phase is high; the interface bonding strength is high; and the fine-grain strengthening effect is achieved; and meanwhile, the method is simple in operation processes, low in cost, and easy to realize industrialization.

Description

technical field [0001] The invention relates to a method for preparing composite materials, belonging to the technical field of material smelting and casting. Background technique [0002] With the development of the automobile industry, environmental and energy consumption issues are becoming more and more prominent, and the demand for lightweight materials with low density, high specific strength and high temperature resistance is becoming more and more urgent. Compared with traditional metal materials, metal matrix composites have higher specific strength and specific modulus; good thermal conductivity, electrical conductivity, wear resistance, high temperature resistance and low thermal expansion coefficient, making them widely used in electronics, automobiles, etc. It has broad application prospects in the field. [0003] Among metal matrix composites, aluminum matrix composites have many excellent properties, especially dispersion-reinforced aluminum matrix composites...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/03C22C21/08B22D1/00
Inventor 任玉艳李英民刘桐宇陈圣元
Owner SHENYANG POLYTECHNIC UNIV