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A kind of preparation method of spherical tc4 particle reinforced az91 magnesium matrix composite material

A technology of particle reinforcement and composite materials, applied in the field of composite materials, can solve problems such as poor wettability and poor material performance, and achieve good wettability, good interface bonding, and reduced gas volume

Active Publication Date: 2017-02-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, ceramic particles are widely used as the reinforcement of magnesium-based composite materials, such as SiC, B 4 C, TiC, TiC, Al 2 o 3 , Y 2 o 3 、TiO 2 , Mg 2 Si, etc., but the performance of the material is not good due to the poor wettability between the ceramic phase such as SiC and the matrix

Method used

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  • A kind of preparation method of spherical tc4 particle reinforced az91 magnesium matrix composite material
  • A kind of preparation method of spherical tc4 particle reinforced az91 magnesium matrix composite material
  • A kind of preparation method of spherical tc4 particle reinforced az91 magnesium matrix composite material

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specific Embodiment approach 1

[0021] Specific embodiment one: the preparation method of a kind of spherical TC4 particle reinforced AZ91 magnesium-based composite material of the present embodiment, it comprises the following steps:

[0022] 1. Preheating of TC4 particles: Preheat TC4 particles at 50-100°C for 30-60 minutes;

[0023] 2. Semi-solid stirring: first heat AZ91 to 560-620°C to melt AZ91 to a semi-solid state, then add the TC4 particles preheated in step 1 into the AZ91 semi-solid melt at a speed of 120g / min, adding While stirring, continue to stir for 20-30 minutes after adding to obtain a mixture;

[0024] 3. Ultrasonic treatment: Ultrasonic treatment is performed on the mixture obtained in step 2, the ultrasonic frequency is 20kHz, and the ultrasonic time is 20-30min;

[0025] 4. Self-sedimentation: Let the mixture after the ultrasonic treatment in step 3 stand naturally for 20-30 minutes to make the spherical TC4 particles settle;

[0026] 5. Cooling: cooling the melt treated in step 4 to ...

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle preheating temperature in step 1 is 60°C-100°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the particle preheating temperature in step 1 is 70°C to 100°C. Others are the same as in the first embodiment.

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Abstract

The invention relates to a preparation method of a reinforced AZ91 magnesium matrix composite, in particular to a preparation method of a spherical TC4 particle reinforced AZ91 magnesium matrix composite, and aims to provide a new method for preparing the TC4 / magnesium matrix composite. The method comprises steps as follows: 1, preheating of TC4 particles; 2, semi-solid state stirring; 3, ultrasonic treatment; 4, self-settlement; 5, cooling. Therefore, the spherical TC4 particle reinforced AZ91 magnesium matrix composite is prepared.

Description

technical field [0001] The invention relates to the control of the interface reaction between the spherical TC4 particles and the AZ91 matrix, so that the two can have a good interface combination, thereby obtaining a composite material with good comprehensive performance. Background technique [0002] At present, ceramic particles are widely used as the reinforcement of magnesium-based composite materials, such as SiC, B 4 C, TiC, TiC, Al 2 o 3 , Y 2 o 3 、TiO 2 , Mg 2 Si, etc., but the performance of the material is not good due to the poor wettability between the ceramic phase such as SiC and the matrix. The wettability between titanium and magnesium is particularly good, and the physical and chemical properties are similar, so the present invention uses Ti particles as the reinforcement of the composite material, and it is expected to obtain a magnesium-based composite material with high strength and good plasticity and toughness. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C1/10C22C23/00C22C32/00
Inventor 王晓军张春雷胡小石吴昆郑明毅
Owner HARBIN INST OF TECH
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