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Re2O3, TiB and TiC doped reinforced titanium-base composite material and method for making same

A titanium-based composite material, re2o3 technology, which is used in reinforcement materials and their preparation, Re2O3, TiB and TiC hybrid reinforced titanium-based composite materials and their preparation fields, can solve the problem of single composite material performance, poor comprehensive mechanical properties, and limited application scope and other problems, to achieve the effects of excellent comprehensive mechanical properties, improved hardness and wear resistance, and low cost

Inactive Publication Date: 2008-03-05
浙江嘉钛金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite material uses a single TiB particle reinforcement, so the performance of the obtained composite material is single, and the comprehensive mechanical properties are poor, which limits its application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare reinforcement with a volume fraction of 1% (Nd 2 o 3 +TiB+TiC) / Ti composite (Nd 2 o 3 :TiB:TiC=6:76:1).

[0030] Weigh 99.56% of titanium powder, 0.43% of rare earth neodymium hexaboride and 0.01% of boron carbide according to the proportion, mix the above powders evenly with a ball mill, and press the mixed powder into a green body with a predetermined shape by molding , put the prepared green body into a vacuum sintering furnace for high-temperature sintering, and the vacuum degree is controlled at 1×10 -3 Pa, the sintering temperature is 1200°C, the sintering time is 2 hours, and finally cooled with the furnace to obtain the in-situ self-generated titanium-based composite material. Compared with the titanium alloy without reinforcement, the obtained composite material has a 3% reduction in grain size, a 2% increase in fatigue performance, a 1% increase in room temperature strength, a 1% increase in room temperature modulus, a 1% increase in hardness, and ...

Embodiment 2

[0032] Prepare reinforcement with a volume fraction of 1% (Nd 2 o 3 +TiB+TiC) / Ti composite (Nd 2 o 3 :TiB:TiC=1:572:140).

[0033] Weigh 99.56% of titanium powder, 0.01% of rare earth neodymium hexaboride and 0.19% of boron carbide according to the proportion, mix the above powders evenly with a ball mill, and press the mixed powder into a green body with a predetermined shape by molding , put the prepared green body into a vacuum sintering furnace for high-temperature sintering, and the vacuum degree is controlled at 1×10 -2 Pa, the sintering temperature is 1500°C, the sintering time is 10 hours, and finally cooled with the furnace to obtain the in-situ self-generated titanium-based composite material. Compared with the titanium alloy without reinforcement, the obtained composite material has a 1% reduction in grain size, a 1% increase in fatigue performance, a 3% increase in room temperature strength, a 3% increase in room temperature modulus, a 2% increase in hardness, ...

Embodiment 3

[0035] Prepare reinforcement with a volume fraction of 5% (La 2 o 3 +TiB+TiC) / Ti-6Al-4V composite (La 2 o 3 :TiB:TiC=1:24:3).

[0036] Weigh titanium powder (88.99%), rare earth hexaboride lanthanum hexaboride (1.06%), boron carbide (0.43%) and alloying elements required aluminum vanadium master alloy 6.92% (containing 55% vanadium) and aluminum wire 2.60%. Use a ball mill to mix the above powders evenly, use cold isostatic pressing to press the mixed powder into a green body with a predetermined shape, put the prepared green body into a vacuum sintering furnace for high-temperature sintering, and control the vacuum degree to 1× 10 -2 Pa, the sintering temperature is 1400°C, the sintering time is 10 hours, and finally cooled with the furnace to obtain the in-situ self-generated titanium-based composite material. Compared with the titanium alloy without reinforcement, the obtained composite material has a 10% reduction in grain size, a 6% increase in fatigue performance, an...

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Abstract

The present invention relates to material technology, and is Re2O3, TiB and TiC reinforced Ti-base composite material and its preparation process. The reinforced Ti-base composite material has the components, including RE hexaboride 0.01-4.31 wt%, boron carbide 0.01-4.58 wt%, alloying elements 0-11.04 wt% and Ti for the rest. It is prepared through mixing Ti powder, RE hexaboride, boron carbide and alloying elements; pressing the powder mixture to form green compact; sintering in a vacuum sintering furnace and cooling in the furnace. The present invention can prepare high performance Ti-base composite material simply in low cost, and the prepared Ti-base composite material may have different reinforcer contents, molar proportions and alloy components.

Description

technical field [0001] The present invention relates to a reinforcing material in the technical field of composite materials and a preparation method thereof, specifically, to a Re 2 o 3 , TiB and TiC hybrid reinforced titanium matrix composite material and its preparation method. Background technique [0002] Titanium has the advantages of low density, high specific strength, high temperature resistance, low temperature resistance, corrosion resistance, strong damping resistance, small thermal conductivity, non-magnetic, non-toxic, and small linear expansion coefficient. The application of titanium has expanded from the initial aerospace and military fields to various industries such as energy, electric power, petroleum, chemical industry, biology, and medicine in modern society and daily life, and has achieved good economic and social benefits. When the traditional titanium alloy materials are developed close to a certain performance limit, there is a tendency to transfe...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/05B22F3/16B22F9/04
Inventor 吕维洁卢俊强刘阳覃继宁张荻
Owner 浙江嘉钛金属科技有限公司
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