Preparation method of iron-based amorphous particle reinforced magnesium rare earth-based composite material and composite material

Through semi-solid stirring casting technology and subsequent solid solution treatment, hot extrusion and aging treatment, iron-based amorphous particle-enhanced magnesium rare earth-based composite materials were prepared, which solved the problem of insufficient performance of magnesium alloys in some application fields and achieved the improvement of the overall performance of the material.

CN119710316AActive Publication Date: 2025-03-28CHONGQING UNIV
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Patent Information

Application Number
CN202411636506.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-03-28
Estimated Expiration
2044-11-15

AI Technical Summary

Technical Problem

In some application fields, magnesium alloys have disadvantages such as low absolute strength, poor high-temperature creep performance, and thermal expansion coefficient, which are difficult to meet the high requirements for strength, hardness, wear resistance and corrosion resistance.

Method used

Semi-solid stirred casting technology is used to prepare iron-based amorphous particle-enhanced magnesium rare earth composite materials, and the structure and performance of the materials are optimized through solid solution treatment, hot extrusion molding and aging treatment.

Benefits of technology

The uniform distribution of iron-based amorphous particles in magnesium rare earth composite materials is achieved, the strength, toughness and plasticity of the material are improved, and its high-temperature performance and corrosion resistance are enhanced.

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Abstract

The invention provides a preparation method of an iron-based amorphous particle reinforced magnesium rare earth-based composite material, and belongs to the technical field of magnesium alloy materials. A magnesium-rare earth alloy serves as a matrix alloy, iron-based amorphous particles serve as a reinforcement phase, and the preparation method comprises the following steps that S1, semi-solid stirring casting forming is conducted, specifically, the matrix alloy is placed in a crucible, the temperature is increased under the condition that shielding gas is introduced till magnesium melt is formed, the temperature of the magnesium melt is reduced to the semi-solid temperature through a staged cooling method, and the magnesium melt is cooled to the semi-solid temperature; adding the preheated iron-based amorphous particles into a magnesium melt, stirring, heating, stirring, keeping the temperature, standing, and quickly cooling to obtain an as-cast composite material; s2, solution treatment; the invention provides a preparation method of an iron-based amorphous particle reinforced magnesium rare earth-based composite material, which is expected to prepare the iron-based amorphous particle reinforced magnesium rare earth-based composite material with excellent comprehensive performance by researching the influence of the content of iron-based amorphous particles, heat treatment and hot extrusion on the structure and performance of the composite material.
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