Method for preparing layered titanium-based composite material based on powder laying - hot pressing sintering

A titanium-based composite material and hot-pressing sintering technology, which is applied in the field of powder coating and hot-pressing sintering to prepare layered titanium-based composite materials, can solve the problems of difficult layer thickness, low bonding strength, complicated material preparation process, etc. Achieve the effect of less defects, high interface bonding strength and simple preparation process

Active Publication Date: 2017-06-16
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of low interfacial bonding strength, layer thickness, difficult control of the components of each layer, and complex material preparation process of layered titanium-based composite materials, and provides a method for preparing layered titanium-based composite materials by powder spreading and hot pressing sintering. method

Method used

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  • Method for preparing layered titanium-based composite material based on powder laying - hot pressing sintering
  • Method for preparing layered titanium-based composite material based on powder laying - hot pressing sintering
  • Method for preparing layered titanium-based composite material based on powder laying - hot pressing sintering

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specific Embodiment approach 1

[0026] Specific implementation mode 1: A method for preparing layered titanium-based composite materials by powder spreading-hot pressing and sintering in this embodiment is carried out according to the following steps:

[0027] 1. Powder spreading: set a sieve above the mold, pour the plastic layer powder through the sieve into the mold, use a steel pressure head to flatten and compact the plastic layer powder, and then pour the high-strength layer powder into the mold through the sieve. Then use a steel pressure head to flatten and compact the high-strength layer powder, and repeat the above operations according to the required number of layers to obtain a composite material powder body;

[0028] The plastic layer powder is pure titanium powder, titanium alloy or a titanium-based composite material containing a low-content reinforcement; the content of the reinforcement in the titanium-based composite material containing a low-content reinforcement is ≤ 3vol.%;

[0029] The ...

specific Embodiment approach 2

[0039]Embodiment 2: The difference between this embodiment and Embodiment 1 is that the plastic layer powder in step 1 is TC4 powder. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the plastic layer powder in step 1 is a titanium-based composite material with a reinforcement content of 3 vol.%. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for preparing a layered titanium-based composite material based on powder laying - hot pressing sintering. The method aims to solve problems that the interface bonding strength of the layered titanium-based composite material is low, the layer thickness and ingredients of each layer cannot be controlled easily and the material preparation process is complex. According to the method, in a powder mixing - powder layering - hot pressing sintering mode, after titanium alloy powder and an enhanced body are evenly mixed, manual powder laying is performed, the process of preparing a blocky material is omitted, each layer of material does not need to be prepared in advance and the titanium-based composite material is prepared through direct hot pressing sintering. By adjusting the content of the enhanced body and powder laying parameters, preparation of the layered material with the controllable ingredients and the adjustable layer thickness is implemented. The method is used for preparing the layered titanium-based composite material.

Description

technical field [0001] The invention relates to a method for preparing a layered titanium-based composite material by powder spreading-hot pressing and sintering. Background technique [0002] Titanium-based composite materials have high specific strength and specific stiffness, and good high-temperature performance, which is the development direction of high-temperature structural materials in the future. The addition of reinforcing phase can improve the strength of titanium matrix composites to a certain extent, but reduces the plasticity and toughness of the material. Titanium alloys have excellent toughness and plasticity, but their strength and high-temperature performance are inferior to those of titanium-based composites. It can be seen that it is difficult for a homogeneous material to meet the contradictory requirements of high strength and good plasticity at the same time, while a layered structure material can be introduced into a high-strength titanium-based com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/14B22F7/02
CPCB22F3/14B22F7/02
Inventor 黄陆军王帅焦阳纪明张芮安琦向雪莲耿林
Owner HARBIN INST OF TECH
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