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A method for regulating the reinforcement phase of tib-reinforced titanium-based composites

A technology of titanium-based composite material and reinforcing phase, which is applied in the field of enhanced phase regulation of TiB-reinforced titanium-based composite material, can solve problems such as enhanced phase regulation, and achieves improved mechanical properties, widened the scope of preparation and application, and has strong process applicability. Effect

Active Publication Date: 2020-04-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation methods of the network-structured titanium-based composites provided by the above two patents require raw materials with strict powder parameters, and this method cannot regulate the reinforcing phase in the formed titanium-based composites.

Method used

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  • A method for regulating the reinforcement phase of tib-reinforced titanium-based composites
  • A method for regulating the reinforcement phase of tib-reinforced titanium-based composites
  • A method for regulating the reinforcement phase of tib-reinforced titanium-based composites

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using TiB (2vol.%) reinforced titanium-based composite material as the matrix, the TiB-reinforced titanium-based composite material is firstly melted by electron beam technology, in which the current is 9mA, the voltage is 40kV, the scanning speed is 10mm / s, and the heat output is 3.6J / mm . Then, low-temperature aging treatment is carried out on the melted composite material, wherein the aging temperature is 500°C, the holding time is 8h, and it is cooled with the furnace.

Embodiment 2

[0023] The difference between this embodiment and Embodiment 1 lies in the electron beam melting treatment, in which the current is 6 mA, the voltage is 60 kV, the scanning speed is 10 mm / s, and the heat output is 3.6 J / mm.

Embodiment 3

[0025] The difference between this embodiment and Embodiment 1 lies in the electron beam melting treatment, wherein the current is 6 mA, the voltage is 50 kV, the scanning speed is 10 mm / s, and the heat output is 3 J / mm.

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Abstract

The invention relates to a reinforced phase regulation and control method for a TiB reinforcing titanium-based composite. The reinforced phase regulation and control method comprises the following steps that firstly, an electron beam technology is utilized to conduct melting treatment on the TiB reinforcing titanium-based composite; and then the melted composite is subjected to low-temperature aging treatment. According to the reinforced phase regulation and control method for the TiB reinforcing titanium-based composite, the nano-scale reinforced phase and the sub-micron TiB reinforced phasecan be obtained and distributed in a net structure, and the titanium-based composite has the excellent mechanical property.

Description

technical field [0001] The invention relates to the field of metal-based composite materials, in particular to a method for regulating the reinforcement phase of a TiB-reinforced titanium-based composite material. Background technique [0002] Titanium matrix composites (TMCs) have high specific strength, high temperature resistance, heat resistance and wear resistance, so they have broad application prospects in aviation, aerospace, automobile industry and other fields. TiB is the best reinforcing phase for titanium-based composites, because TiB and titanium matrix have similar density and thermal expansion coefficient, high elastic modulus and hardness, and excellent thermal stability. At present, the preparation methods of titanium matrix composites mainly include smelting casting, hot pressing sintering and so on. However, the TiB reinforcement phase in the titanium-based composites prepared by these methods is coarse (micron-sized) and prone to fracture, which deterior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C32/00C22F1/18C22F3/00
CPCC22C14/00C22C32/0073C22F1/183C22F3/00
Inventor 姚正军陶学伟李中张莎莎刘莹莹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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