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High-performance magnesium metal matrix composite material and preparation method thereof

A composite material, magnesium metal technology, applied in the new material and preparation process, high-performance LPSO structure reinforced magnesium metal matrix composite material and its preparation field, to achieve the effect of flexible addition, expansion of effective existence and application range, and improvement of performance

Active Publication Date: 2014-04-02
北京二七铁丰龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved in the present invention is how to introduce the LPSO structure into other magnesium and magnesium alloys that cannot produce the LPSO structure in situ, and make the size smaller and uniformly dispersed, which can significantly improve the mechanical properties of the alloy

Method used

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  • High-performance magnesium metal matrix composite material and preparation method thereof
  • High-performance magnesium metal matrix composite material and preparation method thereof
  • High-performance magnesium metal matrix composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Taking industrial pure magnesium as the base material as an example, firstly, industrial pure magnesium and LPSO structure master alloy (65%) are ground and processed to obtain metal particles and mixed. The mass ratios of the two are respectively 90% and 10%. After uniformity, place it in a grinder and grind for 25 minutes. Secondly, the mixed and ground powder is placed in a multi-cycle plastic deformation device for compression processing, the number of times of pressing is 5 times, and the load force is 20t, and finally an extrusion blank is obtained. Thirdly, the extruded blank was annealed in a furnace at a temperature of 400° C., kept for 15 minutes, protected by argon, and cooled naturally in air. Fourth, the extrusion blank is subjected to extrusion processing. First, it is kept in a holding furnace at a temperature of 250°C for 1.5h, and then extruded immediately. The extrusion ratio is 16. Finally, the tensile and yield strengths of the obtained alloy are re...

Embodiment 2

[0028] Taking industrial pure magnesium as the base material as an example, firstly, industrial pure magnesium and LPSO structure master alloy (65%) are ground and processed to obtain metal particles and mixed. The mass ratios of the two are respectively 75% and 25%. After uniformity, place it in a grinder and grind for 15 minutes. Secondly, the mixed and ground powder is placed in a multi-cycle plastic deformation device for compression processing, the number of times of pressing is 5 times, and the load force is 30t, and finally an extrusion blank is obtained. Thirdly, the extruded blank was annealed in a furnace at a temperature of 400° C., kept for 25 minutes, protected by argon, and cooled naturally in air. Fourth, carry out extrusion processing on the extruded blank, first heat it in a holding furnace at a temperature of 300°C for 0.5h, and then extrude immediately, with an extrusion ratio of 16. Finally, the tensile and yield strengths of the obtained alloy are respect...

Embodiment 3

[0030] Taking AZ31 as the base material as an example, first, AZ31 and LPSO structure master alloy (65%) are ground and processed to obtain metal particles and mixed. The mass ratios of the two are 90% and 10% respectively. In a grinder, grind for 30 min. Secondly, the mixed and ground powder is placed in a multi-cycle plastic deformation device for compression processing, the number of times of pressing is 5 times, and the load force is 40t, and finally an extrusion blank is obtained. Thirdly, the extruded blank was annealed in a furnace at a temperature of 400° C., kept for 30 minutes, protected by argon, and cooled naturally in air. Fourth, the extrusion blank is subjected to extrusion processing. First, it is kept in a holding furnace at a temperature of 300°C for 1 hour, and then extruded immediately. The extrusion ratio is 16. Finally, the tensile and yield strengths of the obtained alloy are 270MPa and 185MPa respectively.

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Abstract

A high-performance magnesium metal matrix composite material and a preparation method thereof belong to the technical field of magnesium alloy. The enhanced particles are prepared from intermediate alloy with an LPSO structure and have an initial size of 0.1-0.5 cm. Pure magnesium or magnesium alloy in the same size, as the base material, is mixed with the enhanced particles, and a certain processing method and heat treatment are employed to prepare an extrusion blank of enhanced particles mixed with the pure magnesium matrix. A weight proportion of the enhanced particles and the pure magnesium matrix in the alloy is regulated at 10-40%, so as to an obtain an LPSO structure reinforced magnesium metal matrix composite material with excellent mechanical properties. The composite material can be used in the preparation of various structural components to meet the needs of different aspects.

Description

technical field [0001] The invention relates to a high-performance LPSO structure-reinforced magnesium metal-based composite material and a preparation method thereof, in particular to a new material and a preparation process, and belongs to the technical field of magnesium alloys. Background technique [0002] In the 21st century, energy shortage and environmental deterioration have become the focus of attention at home and abroad. As the lightest energy-saving and environment-friendly metal structure material, the application of magnesium alloy can effectively alleviate the above problems. However, most magnesium alloys have poor mechanical properties, which limits their wide application in automotive, rail transit, aerospace and other fields. How to improve its mechanical properties has become a hot research issue for material science researchers. Among the many research solutions, adding alloying elements is one of the most commonly used means. Among them, rare earth ...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C23/00B22F3/02B22F3/20B22F3/24C22F1/06
Inventor 刘轲杜文博王朝辉李淑波
Owner 北京二七铁丰龙科技有限公司
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