A kind of preparation method of nano-titanium particle reinforced magnesium-based composite material

A technology of composite materials and nano-titanium, which is applied in the field of preparation of magnesium-based composite materials, can solve the problems of uneven distribution of nano-titanium particles, poor comprehensive mechanical properties, and unsatisfactory reinforcing effect of reinforcements, so as to facilitate dispersion and improve The effect of wettability

Active Publication Date: 2020-12-01
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0003] The present invention aims to solve the technical problems that the existing nano-titanium particles are unevenly distributed in the magnesium matrix, resulting in unsatisfactory reinforcing effects of reinforcements and poor comprehensive mechanical properties, and provides a nano-titanium particle-reinforced magnesium-based composite material. Preparation

Method used

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  • A kind of preparation method of nano-titanium particle reinforced magnesium-based composite material
  • A kind of preparation method of nano-titanium particle reinforced magnesium-based composite material
  • A kind of preparation method of nano-titanium particle reinforced magnesium-based composite material

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specific Embodiment approach 1

[0019] Specific implementation mode 1: This implementation mode is a preparation method of nano-titanium particle-reinforced magnesium-based composite material, which is specifically carried out according to the following steps:

[0020] 1. Melting of the matrix alloy and preheating of the nano-titanium particles of the reinforcement: put the magnesium alloy into the crucible, and then smelt it into a liquid magnesium alloy at a temperature of 720°C to 800°C; at the same time, put the nano-titanium particles at a temperature of Preheat for 20 minutes to 40 minutes at 150°C to 250°C;

[0021] 2. Semi-solid stirring: the temperature of the liquid magnesium alloy in step 1 is lowered to 620°C to 660°C to obtain a semi-solid magnesium alloy. Add hot nano-titanium particles into the semi-solid magnesium alloy, and then continue to stir for 20-30 minutes under the conditions of differential forward and reverse stirring and magnesium alloy semi-solid, to obtain a semi-solid mixed mel...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the magnesium alloy described in step 1 is a microalloyed Mg-Zn alloy. Others are the same as the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the titanium nanoparticles are preheated for 30 minutes at a temperature of 200° C. at the same time. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a magnesium-based composite, in particular to a preparation method of a nano titanium particle reinforced magnesium-based composite. The preparation method aims to solve the technical problems that existing nano titanium particles are distributed in a magnesium matrix unevenly, and the comprehensive mechanical property is poor. The preparation method comprises the steps of firstly, smelting of a matrix alloy and preheating of reinforcement nano titanium particles, secondly, semi-solid stirring, thirdly, ultrasonic treatment and fourthly, die-cast formation. The preparation method comprises the following advantages that the nano titanium particle reinforced high-strength magnesium-based composite is prepared by adopting differential forward and reverse stirring and slow rotating crucible ultrasonic treatment, the magnesium matrix alloy is firstly warmed and then cooled to form a semi-solid state, then preheated nano titanium particles areadded into semi-solid melt to be subjected to differential forward and reverse stirring, after stirring is completed, the mixed melt is warmed to a liquid state to be subjected to slow rotating crucible ultrasonic treatment, and finally die-cast formation is carried out to prepare out the cast magnesium-based composite.

Description

technical field [0001] The invention relates to a preparation method of a magnesium-based composite material. Background technique [0002] Commonly used reinforcement particles for magnesium-based composites include TiC, SiC, B 4 C, Ti, Y 2 o 3 、TiO 2 and Al 2 o 3 etc. Some of these reinforcement particles have poor wettability with the magnesium alloy matrix, while some have better wettability. Among them, the biocompatibility of nano-titanium particles is very good, but the existing nano-titanium particles are not well distributed in the magnesium matrix. Uniformity, resulting in unsatisfactory reinforcement effect and poor comprehensive mechanical properties. Contents of the invention [0003] The present invention aims to solve the technical problems that the existing nano-titanium particles are unevenly distributed in the magnesium matrix, resulting in unsatisfactory reinforcing effects of reinforcements and poor comprehensive mechanical properties, and provide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C23/00B22D17/00
CPCB22D17/007C22C1/03C22C23/00
Inventor 聂凯波韩俊刚邓坤坤朱智浩杨安
Owner TAIYUAN UNIV OF TECH
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