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Titanium/titanium carbide core-shell structure reinforced aluminum matrix composite material and preparation method thereof

A core-shell structure and composite material technology, applied in the field of aluminum matrix composite materials, can solve the problem of not being able to have high strength and high toughness at the same time, and achieve the effects of good toughness, good metallurgical bonding, and good interface bonding.

Active Publication Date: 2019-09-06
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material, which solves the problem that the existing aluminum matrix composite materials cannot have high strength and high toughness at the same time

Method used

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  • Titanium/titanium carbide core-shell structure reinforced aluminum matrix composite material and preparation method thereof
  • Titanium/titanium carbide core-shell structure reinforced aluminum matrix composite material and preparation method thereof
  • Titanium/titanium carbide core-shell structure reinforced aluminum matrix composite material and preparation method thereof

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preparation example Construction

[0039] The invention discloses a method for preparing a titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material, which specifically comprises the following steps:

[0040] Step 1, preparation of titanium / titanium carbide core-shell powder

[0041] Step 1.1, weighing the following components by mass percentage: 5.5% to 17.2% graphite powder, 72.8% to 84.5% titanium powder, and the rest are iron powder. The total weight percentage of the above components is 100%;

[0042]Step 1.2, mixing, mix the components weighed in step 1.1 evenly to get the mixed powder; the mixing adopts V-type mixing machine, the main process parameters of mixing: speed 60r / min~80r / min, mixing time 6h~24h;

[0043] Step 1.3, the compact is preformed, and the mixed powder is pressed and formed by ordinary molding to obtain a compact. During the molding process, paraffin wax accounting for 2 to 4 wt% of the mixed powder is used as a forming agent, and the pressing pressu...

Embodiment 1

[0050] The preparation of a titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material specifically comprises the following steps:

[0051] Step 1, preparation of titanium / titanium carbide core-shell powder

[0052] Step 1.1, weigh the following components by mass percentage: 5.5% graphite powder, 84.5% titanium powder, 10% iron powder, the total weight percentage of the above components is 100%, and the particle size of titanium powder is about 500 mesh, that is, The diameter is about 25 μm;

[0053] Step 1.2, mixing, mixing the components weighed in step 1.1 evenly to obtain the mixed powder; mixing using a V-type mixing machine, the main process parameters of mixing: speed 60r / min, mixing time 24h;

[0054] Step 1.3, preforming the green compact, adopting common molding to press the mixed powder to form a green compact, and using paraffin wax accounting for 4wt% of the mixed powder mass as a forming agent in the molding process, and determ...

Embodiment 2

[0062] The preparation of a titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material specifically comprises the following steps:

[0063] Step 1, preparation of titanium / titanium carbide core-shell powder

[0064] Step 1.1, weigh the following components respectively by mass percentage: 14.75% graphite powder, 75.25% titanium powder, 10% iron powder, the total weight percentage of the above components is 100%, and the particle size of titanium powder is about 3000 mesh, i.e. The diameter is about 5 μm;

[0065] Step 1.2, mixing, mixing the components weighed in step 1.1 evenly to obtain mixed powder; mixing using a V-shaped mixing machine, the main process parameters of mixing: speed 70r / min, mixing time 23h;

[0066] Step 1.3, compaction preforming, adopting ordinary molding to press the mixed powder to form a compact, that is, to obtain a compact. During the molding process, paraffin wax accounting for 3wt% of the mass of the mixed powder...

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Abstract

The invention discloses a titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material. The material is composed of pure aluminum or aluminum alloy matrix and a titanium / titanium carbide core-shell particle reinforced phase. According to the reinforced phase, titanium serves as the core, a titanium carbide ceramic layer serves as a shell, and the dimensions of titanium carbide particles inside the shell change in a gradient manner. The invention further discloses a preparation method of the titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material. According to the titanium / titanium carbide core-shell structure reinforced aluminum matrix composite material, the toughness of the composite material is improved because of thehigh-toughness titanium core, the strength of the composite material is improved because of the titanium carbide ceramic layer with the high volume fraction, and therefore, the aluminum matrix composite material has the high strength and the good toughness at the same time.

Description

technical field [0001] The invention belongs to the technical field of aluminum-based composite materials, and in particular relates to a titanium / titanium carbide core-shell structure reinforced aluminum-based composite material and a preparation method thereof. Background technique [0002] Aluminum matrix composites are widely used due to their excellent mechanical and physical properties such as high specific strength, specific stiffness, wear resistance, fatigue resistance, low thermal expansion, low density, high yield strength, good dimensional stability and thermal conductivity. Widely used in aerospace, military, automotive and other fields. [0003] At present, the annual output of aluminum-based composite wear-resistant parts has reached more than 1,000 tons, and the reinforcing phases in these aluminum-based composite wear-resistant parts are mainly SiC, TiC, B 4 C. Al 2 o 3 And other ceramic particles, because these ceramic phases have good wettability with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/10C22C21/00C22C1/10C22C1/02
CPCC22C29/10C22C29/067C22C21/00C22C21/003C22C1/1036C22C1/1068C22C1/1047
Inventor 许云华白海强钟黎声邓超商昭魏俊哲朱建雷惠鹏飞
Owner XIAN UNIV OF TECH
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