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Method for preparing TiC/TiB2 biphase ceramic granule partial reinforced manganese steel composite material

A technology of ceramic particles and local reinforcement, which is applied in the field of preparation of TiC and TiB2 dual-phase ceramic particles locally reinforced manganese-steel composite materials, which can solve the problems of reduced toughness and achieve the effects of inhibiting precipitation, good comprehensive performance, and reducing reaction temperature

Inactive Publication Date: 2008-07-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current traditional particle-reinforced metal matrix composites are generally integrally reinforced (Chinese patent, patent number: ZL98101890.4), which cannot solve the fatal contradiction between wear resistance and toughness in one part. That is to say, the wear part should have high wear resistance, and the matrix (non-wear part) needs high strength and toughness in order to bear different loads (because the toughness decreases when there are particles), therefore, the ceramic particles locally strengthen the steel matrix composite material to become a composite material. Research hotspots in the field of materials

Method used

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  • Method for preparing TiC/TiB2 biphase ceramic granule partial reinforced manganese steel composite material
  • Method for preparing TiC/TiB2 biphase ceramic granule partial reinforced manganese steel composite material

Examples

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Effect test

Embodiment 1

[0029] 10wt.% Cu-Ti-B 4 TiC and TiB prepared by C system 2 Particle locally reinforced manganese-steel composites.

[0030] Cu powder (particle size less than 45 microns), Ti powder (particle size less than 38 microns) and B 4 C powder (particle size less than 3.5 microns) according to Ti and B 4 The molar ratio of C is Ti:B 4 C=3:1, the proportion of Cu content is 10wt.%, put the prepared powder into the low-speed mixer, mix for 6 hours, and press it into a cylindrical reaction prefabrication of Ф22×10mm at room temperature block, the compactness rate of the prefabricated block is 75±5%; the pressed Cu-Ti-B 4 C prefabricated block is placed in a low vacuum heating device, heated to 200°C at a heating rate of 15°C / min, and vacuum degassed for 2 hours; the reaction prefabricated block is taken out and placed in the mold where the casting needs to be strengthened. The matrix is ​​manganese steel (mass percentage of chemical composition: C, 0.5 ~ 1.5, Mn, 5.0 ~ 25.0, Si 2 Th...

Embodiment 2

[0034] 30wt.% Cu-Ti-B 4 TiC and TiB prepared by C system 2 Particle locally reinforced manganese-steel composites.

[0035] Cu powder (particle size less than 45 microns), Ti powder (particle size less than 28 microns) and B 4 C powder (particle size less than 3.5 microns) according to Ti and B4 The molar ratio of C is Ti:B 4 C=3:1, the proportion of Cu content is 30wt.%, put the prepared powder into the low-speed mixer, mix for 7 hours, and press it into a cylindrical reaction prefabrication of Ф22×10mm at room temperature block, the compactness rate of the prefabricated block is 75±5%; the pressed Cu-Ti-B 4 C prefabricated block is placed in a low vacuum heating device, heated to 300°C at a heating rate of 25°C / min, and vacuum degassed for 3 hours; the reaction prefabricated block is taken out and placed in the casting mold where the casting needs to be strengthened. The matrix is ​​manganese steel (mass percentage of chemical composition: C, 0.6~1.4, Mn, 6.0~20.0, Si2 T...

Embodiment 3

[0037] 60wt.% Cu-Ti-B 4 TiC and TiB prepared by C system 2 Particle locally reinforced manganese-steel composites.

[0038] Cu powder (particle size less than 45 microns), Ti powder (particle size less than 25 microns) and B 4 C powder (particle size less than 45 microns) according to Ti and B 4 The molar ratio of C is Ti:B 4 C=3:1, the proportion of Cu content is 60wt.%, put the prepared powder into the low-speed mixer, mix for 8 hours, and press it into a cylindrical reaction prefabrication of Ф22×10mm at room temperature block, the compactness rate of the prefabricated block is 75±5%; the pressed Cu-Ti-B 4 C prefabricated block is placed in a low vacuum heating device, heated to 400°C at a heating rate of 35°C / min, and vacuum degassed for 4 hours; the reaction prefabricated block is taken out and placed in the casting mold where the casting needs to be strengthened. The matrix is ​​manganese steel (mass percentage of chemical composition: C, 0.7~1.3, Mn, 7.0~13.0, Si2 ...

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Abstract

The invention relates to a method for preparing a partial reinforcing manganese steel compound material of TiC / TiB2 double-phase ceramics particles by compounding a self-expansion reaction in-situ of a Cu-Ti-B4C system in steel liquid with a traditional casting method. The preparing process includes that a Cu-Ti-B4C precast block which has been vacuumized to remove gas is arranged at a part that a cast needs reinforcing and is poured by the manganese steel liquid and the Cu-Ti-B4C precast block is ignited by the high temperature of the poured steel liquid to prepare the partial reinforcing manganese steel compound material of the TiC / TiB2 double-phase ceramics particles. A basic body of the manganese steel compound material prepared by the technique is better combined with a reinforcing area and has a better comprehensive performance compared with a single ceramics particle; and simultaneously a partial reinforced mechanical part not only has the basic body with high obdurability, but also has a working position with the advantages of high rigidity, high strength, wearing resistance, anti-high temperature tiredness and oxidation; can be broadly used for various wearing resistance parts served under a working condition that impact abrasive particles are worn.

Description

technical field [0001] The present invention relates to the preparation method of metal matrix composite material, especially relates to TiC and TiB 2 Preparation method of manganese-steel composite material locally reinforced by dual-phase ceramic particles. Background technique [0002] With the development of modern industry, there is an urgent need for structural parts that can work for a long time under high temperature, high speed and severe wear conditions. It is increasingly difficult for structural parts made of pure steel materials to meet the long-life and high-efficiency work requirements of the modern chemical industry. Therefore, developing new wear-resistant materials, improving the service life of wear-resistant materials and reducing their manufacturing costs are important issues that research and production departments at home and abroad urgently need to solve, and have great national economic significance. One of the most effective ways to improve the wea...

Claims

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Application Information

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IPC IPC(8): B22D19/02B22D27/20B22F1/00B22F3/02
Inventor 姜启川梁云虹王慧远杨亚锋赵如意
Owner JILIN UNIV
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