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Heat resistant magnesium alloy and composite material containing heat resistant magnesium alloy and its preparation method

A technology for porous composite materials and magnesium alloys is applied in the field of heat-resistant magnesium alloys and composite materials containing heat-resistant magnesium alloys, and can solve the problems of unstable absorption rate of alloys, affecting alloy properties, etc., and achieves low cost and high production efficiency. The effect of low cost and good damping performance

Inactive Publication Date: 2010-01-20
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical defect in the above patents is that the element Ca is used, because the nature of Ca is very active, and the absorption rate in the alloy is unstable, which ultimately affects the performance of the alloy.

Method used

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  • Heat resistant magnesium alloy and composite material containing heat resistant magnesium alloy and its preparation method
  • Heat resistant magnesium alloy and composite material containing heat resistant magnesium alloy and its preparation method

Examples

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Effect test

Embodiment 1

[0012] A heat-resistant magnesium alloy, the composition of which is composed of 3% Al, 0.5% Zn, 0.5% Ti, 1% Sn, 0.01% La, 0.5% Si, 0.05% Zr and the rest is Mg.

[0013] A porous composite material containing a heat-resistant magnesium alloy, the material is a metal-based composite material containing inorganic non-metallic phase mixed particles, the metal matrix is ​​a heat-resistant magnesium alloy, and the inorganic non-metallic phase mixed particles have pores Perlite and floating beads, the size of the mixed particles of perlite and floating beads in the alloy is 0.5mm, and the density of perlite is 1g / cm 3 , the density of floating beads is 0.8g / cm 3 , the volume percentage of the inorganic non-metal phase mixed particles in the porous composite material is 20%, and the weight ratio of perlite and floating beads in the inorganic non-metal phase mixed particles is 9.5:0.5.

[0014] A method for preparing a heat-resistant magnesium alloy, the preparation steps are as foll...

Embodiment 2

[0017] A heat-resistant magnesium alloy, the composition of which is composed of 7% Al, 5% Zn, 2% Ti, 6% Sn, 0.1% La, 4% Si, 0.6% Zr, and the rest is Mg.

[0018] A porous composite material containing a heat-resistant magnesium alloy, the material is a metal-based composite material containing inorganic non-metallic phase mixed particles, the metal matrix is ​​a heat-resistant magnesium alloy, and the inorganic non-metallic phase mixed particles have pores Perlite and floating beads, the size of the mixed particles of perlite and floating beads in the alloy is 2mm, and the density of perlite is 2.2g / cm 3 , the density of floating beads is 1.2g / cm 3 , the volume percentage of the inorganic non-metal phase mixed particles in the porous composite material is 75%, and the weight ratio of perlite and floating beads in the inorganic non-metal phase mixed particles is 0.5:9.5.

[0019] A method for preparing a heat-resistant magnesium alloy, the preparation steps are: first, accord...

Embodiment 3

[0022] A heat-resistant magnesium alloy, the composition of which is composed of 7% Al, 2% Zn, 2% Ti, 3% Sn, 0.08% La, 4% Si, 0.5% Zr, and the rest is Mg.

[0023] A porous composite material containing a heat-resistant magnesium alloy, the material is a metal-based composite material containing inorganic non-metallic phase mixed particles, the metal matrix is ​​a heat-resistant magnesium alloy, and the inorganic non-metallic phase mixed particles have pores Perlite and floating beads, the size of the mixed particles of perlite and floating beads in the alloy is 1mm, and the density of perlite is 1.5g / cm 3 , the floating bead density is 1.0g / cm 3 The volume percentage of the inorganic non-metal phase mixed particles in the porous composite material is 50%, and the weight ratio of perlite and floating beads in the inorganic non-metal phase mixed particles is 1:1.

[0024] A method for preparing a heat-resistant magnesium alloy, the preparation steps are: first, according to th...

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Abstract

The invention provides a heat-resistant magnesium alloy, and the compositions in mass percentage of the alloy are: more than or equal to 3 percent and less than or equal to 7 percent of Al, more than or equal to 0.5 percent and less than or equal to 7 percent of Zn more than or equal to 0.5 percent and less than or equal to 2 percent of Ti, more than or equal to 1 percent and less than or equal to 6 percent of Sn, more than or equal to 0.01 percent and less than or equal to 0.1 percent of La, more than or equal to 0.5 percent and less than or equal to 4 percent of Si and more than or equal to 0.05 percent and less than or equal to 0.6 percent of Zr and the balance being manganese. The heat-resistant magnesium alloy uses only such normal non-precious rare elements as Al, Zn, Ti, Sn, La, Si and Zr, has low cost and keeps good heat-resistant property without adding the elements; and the plastic deformation rate of the alloy is 0.2 to 0.35 percent at the temperature of 250 DEG C and under the stress of 30Mpa, and the alloy can be widely applied in the working environment of high temperature. The heat-resistant magnesium-based porous composite material consists of heat-resistant magnesium alloy and a minimum-density heat-resistant inorganic porous material, has heat-resistant function and good damping property below the temperature of 250 DEG C, can be widely applied to the heat-resistant vibration-absorption parts and components of rapid machinery like an automobile, and has the advantages of good vibration-absorption, sound insulation and voice confusion. The composite material is simple in preparation process and low in production cost.

Description

1. Technical field [0001] The invention belongs to the technical field of magnesium alloys, in particular to a heat-resistant magnesium alloy, a composite material containing the heat-resistant magnesium alloy and a preparation method thereof. 2. Background technology [0002] Magnesium alloys are widely used in the manufacture of industrial products because of their high specific strength and specific stiffness. However, the existing common magnesium alloys have poor heat resistance. If such an alloy is used as the matrix of the composite material, the heat resistance of the composite material will also be poor. At present, there are many studies on heat-resistant magnesium alloys: patent 200710056175.4 proposes a preparation method of porous magnesium-expanded perlite composite material. The matrix used in this patent is metal Mg or AZ91 magnesium alloy, which has low resistance to heat resistance. In addition, due to the vacuum infiltration method, the requirements for p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C23/04C22C1/10
Inventor 王玲赵浩峰颜开
Owner NANJING UNIV OF INFORMATION SCI & TECH
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