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Preparation method of titanium particle reinforced magnesium base composite material

A technology of particle reinforcement and composite materials, applied in the field of composite materials, can solve problems such as plasticity decline, and achieve the effects of weakened interface reaction, wide application prospects, and uniform distribution

Inactive Publication Date: 2006-01-11
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Found through the document retrieval of prior art, " Ti-6Al-4V particle reinforcedmagnesium matrix composite by powder metallurgy [J] that Y.L.Xi et al published on " Mater.Letters " (Material Letters) 2005 59:1831-1835 (Preparation of Ti-6Al-4V particle-reinforced magnesium-based composite material by powder metallurgy method)", this paper prepared titanium alloy TC (Ti-6Al-4V) particle-reinforced magnesium alloy MB15 by powder metallurgy method, and the composite material prepared by them Compared with the base magnesium alloy, the plasticity is greatly reduced, and it does not involve the change of damping performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) The industrially pure Mg powder with an average particle diameter of 40 μm and a purity of ≥99.7wt.% (percentage by weight) is mixed with Ti powder with an average particle diameter of 40 μm and a purity of >=99wt% at a volume percentage of 98:2;

[0016] (2) Put the mixed powder into a ball mill, and the ball milling time is 10 hours.

[0017] (3) Put the uniformly mixed powder into a mould, and press to form at room temperature with a pressure of 200 MPa.

[0018] (4) The pressed block is sintered in a vacuum furnace, the sintering temperature is 450° C., and the sintering time is 2 hours.

[0019] (5) The sintered block is hot-extruded, the extrusion temperature is 350° C., and the extrusion ratio is 10:1. Finished products are machined.

Embodiment 2

[0021] (1) The industrially pure Mg powder with an average particle size of 40 μm and a purity of ≥99.7wt.% is mixed with Ti powder with an average particle size of 40 μm and a purity of >=99wt% at a volume percentage of 95:5;

[0022] (2) Put the mixed powder into a ball mill, and the ball milling time is 20 hours.

[0023] (3) Put the uniformly mixed powder into a mould, and press to form at room temperature with a pressure of 250 MPa.

[0024] (4) The pressed block is sintered in a vacuum furnace, the sintering temperature is 500° C., and the sintering time is 3 hours.

[0025] (5) The sintered block is hot-extruded, the extrusion temperature is 400° C., and the extrusion ratio is 10:1. Finished products are machined.

Embodiment 3

[0027] (1) The industrially pure Mg powder with an average particle size of 40 μm and a purity of ≥99.7wt.% is mixed with Ti powder with an average particle size of 40 μm and a purity of >=99wt% at a volume percentage of 90:10;

[0028] (2) Put the mixed powder into a ball mill, and the ball milling time is 24 hours.

[0029] (3) Put the uniformly mixed powder into a mould, and press to form at room temperature with a pressure of 300 MPa.

[0030] (4) The pressed block is sintered in a vacuum furnace, the sintering temperature is 550° C., and the sintering time is 3 hours.

[0031] (5) The sintered block is hot-extruded, the extrusion temperature is 450° C., and the extrusion ratio is 10:1. Finished products are machined.

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Abstract

A process for preparing the Ti particle reinforced Mg-base composition includes such steps as proportionally mixing Ti particles with Mg or Mg-alloy powder, proportionally adding agate pellets, ball grinding, die pressing to become blocks, vacuum sintering, hot squeezing and cold machining to obtain parts with light weight, high specific strength and specific rigidity, and electromagnetic shielding function.

Description

technical field [0001] The invention relates to a preparation method in the technical field of composite materials, in particular to a preparation method of titanium particle-reinforced magnesium-based composite materials. Background technique [0002] At present, ceramic particles such as SiC and TiB are widely used 2 As the reinforcement of magnesium-based composites, while improving the strength of the material, the plasticity is much lower than that of the matrix material. This problem limits the wider application of Mg-based composites. In addition, magnesium, as a material with the best damping performance among the commonly used metal structural materials, plays an important role in shock absorption and noise reduction. It has also become a research topic for the application of magnesium-based composite materials to improve the strength of the material while maintaining the high plasticity of magnesium. One of the core subjects. In the prior art, titanium particle ...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22F1/06B22F3/16
Inventor 赵常利张小农
Owner SHANGHAI JIAO TONG UNIV
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