Method for preparing high-performance in-situ TIC-reinforced titanium matrix composite workpieces based on cnts and laser additive manufacturing processing technology

A titanium-based composite material and laser additive technology, which is applied in the fields of material science and engineering, and mechanical engineering, can solve the problems of weakening the enhancement effect, coarse particles of the enhancement phase, and difficult dispersion of CNTs, so as to improve the comprehensive mechanical properties and laser absorption. rate, the effect of rapid solidification properties
CN105033254BActive Publication Date: 2016-08-24南京瑞德增域三维技术发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
南京瑞德增域三维技术发展有限公司
Publication Date
2016-08-24

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Abstract

The invention discloses a method for manufacturing a high-performance in-situ TiC reinforced titanium-based composite workpiece on the basis of CNTs and a laser additive manufacturing and processing technology. The method includes the following steps that (1) the carbon nano tubes are subjected to preliminary ultrasonic dispersion treatment; (2) pure titanium powder with the average particle size of 45-75 microns is mixed with the carbon nano tubes to obtain a mixture, and CNTs / Ti mixed powder is obtained by ball-milling the mixture through a ball mill under the protection of argon; and (3) the ball-milled CNTs / Ti mixed powder is shaped through a laser additive manufacturing and processing method so as to obtain a high-performance in-situ TiC reinforced titanium-based composite body. The method has the advantages that in-situ TiC reinforcement phases are formed on the basis of a CNTs in-situ reaction and evenly distributed in a titanium substrate, and the interface bonding strength is high; grains of a composite are refined remarkably; net forming or near-net forming of a test piece can be achieved; any complex heterogeneous part can be formed.
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Description

technical field

[0001] The invention belongs to the fields of material science and engineering and mechanical engineering, and especially relates to a method for preparing an in-situ TiC-reinforced Ti-based composite material with high strength, high hardness, and a novel enhanced microstructure based on CNTs and laser additive manufacturing processing technology. Background technique

[0002] As a rare metal, titanium has excellent properties such as small specific gravity, high specific strength, good corrosion resistance, high heat resistance, and easy welding. It is a high-quality new structural material, functional material and bioengineering material, and is widely used in aviation. Aerospace, industrial ships, energy power and biomedicine, etc. However, titanium and titanium alloys generally have the characteristics of low hardness, poor wear resistance, and high chemical activity, which limit their further applications. Therefore, further improving the hardness, wea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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