Reinforced magnesium-based composite material and preparation method thereof

A composite material and mass percentage technology, applied in the field of metal materials, can solve the problems of poor hardness and high cost, and achieve the effect of low cost, low cost and expanded application range

Inactive Publication Date: 2018-04-13
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reinforced magnesium-based alloy disclosed in this patent has many types of elements and high cost. Although the tensile strength is high, the hardness is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The reinforced magnesium-based composite material of this embodiment is composed of the following components in mass percentage: Gd is 3%, Sm is 3%, Zr is 0.3%, SiC is 1%, and the balance is metal magnesium and unavoidable impurities; Wherein the average particle size of SiC is less than 5 μm.

[0038] The preparation method of the reinforced magnesium-based composite material of the present embodiment comprises the following steps:

[0039] 1) Weigh raw material pure magnesium, master alloys Mg-30Gd, Mg-30Sm, Mg-30Zr according to the weight converted from the above mass percentage, and set aside;

[0040] 2) In order to prevent SiC powder from agglomerating, first dissolve SiC powder in absolute ethanol to form a suspension, then ultrasonically vibrate for 30 minutes to disperse the agglomerated SiC powder, then dry and evaporate absolute ethanol to obtain dry SiC powder , after weighing a certain weight according to the above mass percentage, wrap it with aluminum fo...

Embodiment 2

[0045] The reinforced magnesium-based composite material of this embodiment is composed of the following components in mass percentage: Gd is 5%, Sm is 4%, Zr is 0.5%, SiC is 3%, and the balance is magnesium and unavoidable impurities; wherein The average grain size of SiC is less than 5 μm.

[0046] The preparation method of the reinforced magnesium-based composite material of the present embodiment comprises the following steps:

[0047]1) Weigh raw material pure magnesium, master alloys Mg-30Gd, Mg-30Sm, Mg-30Zr according to the weight converted from the above mass percentage, and set aside;

[0048] 2) In order to prevent the agglomeration of SiC powder, first dissolve the SiC powder in absolute ethanol to form a suspension, and perform ultrasonic vibration treatment for 40 minutes to disperse the agglomerated SiC powder, then dry and evaporate absolute ethanol to obtain dry SiC powder , after weighing a certain weight according to the above mass percentage, wrap it with ...

Embodiment 3

[0053] The reinforced magnesium-based composite material of this embodiment is composed of the following components in mass percentage: Gd is 6%, Sm is 2%, Zr is 0.6%, SiC is 6%, and the balance is magnesium and unavoidable impurities; wherein The average grain size of SiC is less than 5 μm.

[0054] The preparation method of the reinforced magnesium-based composite material of the present embodiment comprises the following steps:

[0055] 1) Weigh raw material pure magnesium, master alloys Mg-30Gd, Mg-30Sm, Mg-30Zr according to the weight converted from the above mass percentage, and set aside;

[0056] 2) In order to prevent the SiC powder from agglomerating, first dissolve the SiC powder in absolute ethanol to form a suspension, and perform ultrasonic vibration treatment for 30 minutes to disperse the agglomerated SiC powder, then dry and evaporate absolute ethanol to obtain a dry SiC powder , after weighing a certain weight according to the above mass percentage, wrap it ...

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Abstract

The invention relates to reinforced magnesium-based composite material and a preparation method thereof, and relates to the field of metal material. The reinforced magnesium-based composite material comprises, by mass percentage, 3-6% of Gd, 2-4% of Sm, 0.3-0.6% of Zr, 1-9% of SiC and the balance of magnesium and inevitable impurities. According to the reinforced magnesium-based composite material, the component is simple in component, the cost is relatively low, micron-sized SiC particles are added, so that strength, hardness and wear resistance of the material are greatly improved, and the application range of the material is expanded; and room temperature tensile strength is as high as 258.35MPa, Brinell Hardness is as high as 118.4, and therefore, compared with the magnesium-based alloy of Mg-5Gd-3Sm-0.5Zr, the room temperature tensile strength is increased by 44.65%, and the hardness is increased by 59.30%.

Description

technical field [0001] The invention relates to a reinforced magnesium-based composite material and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] As the lightest engineering structural metal material, magnesium alloy has many excellent properties, but there are also some disadvantages, such as poor toughness, insufficient high temperature strength, poor wear resistance, etc., which limit the application of magnesium alloy in some fields. In order to meet the needs of production, various series of rare earth magnesium alloys have been developed in recent years, such as Mg-Gd series, Mg-Sm series, Mg-Y series, etc. The performance and structure of magnesium alloys with mixed rare earths have also been studied. To a certain extent, the room temperature and high temperature mechanical properties of the magnesium alloy are improved. [0003] Magnesium-based composites have low density, high specific stiffness and specific ...

Claims

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Application Information

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IPC IPC(8): C22C23/06C22C23/00C22C32/00C22C1/10C22F1/06
CPCC22C1/1005C22C1/1036C22C23/00C22C23/06C22C32/0063C22F1/06C22C1/1047
Inventor 李全安朱利敏陈晓亚王颂博张帅关海昆
Owner HENAN UNIV OF SCI & TECH
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