Preparation method of TiBw/Ti-6Al-4V composite bar adopting quasi-continuous reticular structure

A technology of ti-6al-4v and composite materials, which is applied in the field of material preparation, can solve problems such as incapable of large-scale production, low production efficiency, and complicated preparation process, and achieve good tissue uniformity, short production cycle, and simplified preparation process Effect

Active Publication Date: 2015-01-07
HARBIN INST OF TECH AT WEIHAI
View PDF1 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of the existing TiBw / Ti-6Al-4V composite material with complex preparation process, high cost, low production efficiency, high equipment requirements and incapable of large-scale production, and provides a simple process, low cost, production Preparation method of quasi-continuous network structure TiBw / Ti-6Al-4V composite material rod with high efficiency, low equipment requirements, and large-scale production

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of TiBw/Ti-6Al-4V composite bar adopting quasi-continuous reticular structure
  • Preparation method of TiBw/Ti-6Al-4V composite bar adopting quasi-continuous reticular structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Low-energy ball mill mixed powder: spherically atomized Ti-6Al-4V powder with a particle size of 130 μm and TiB with a particle size of 2 μm 2 The powder is mixed by ball milling to make the fine TiB 2 The powder is uniformly coated on the surface of the large particle Ti-6Al-4V, thus obtaining TiB 2 / Ti-6Al-4V mixed powder, the process conditions are as follows: the ball milling speed is 120r / min, the ball milling time is 8h, and the mass ratio of ball to material is 5:1.

[0024] (2) Cold press forming: TiB 2 / Ti-6Al-4V mixed powder is placed in a metal sheath, and is formed by cold pressing at a pressure of 900MPa, then vacuum degassed, sealed and welded to obtain an extrusion billet, and the vacuum degree is 10 -3 Pa.

[0025] (3) Pre-sintering and hot extrusion: pre-sinter the extruded billet obtained in step (2) at 1050°C for 1 hour, and in situ react self-generated TiB whiskers (TiBw) to obtain a pre-sintered extruded billet . Then, the pre-sintered extr...

Embodiment 2

[0028] (1) Low-energy ball mill mixed powder: spherically atomized Ti-6Al-4V powder with a particle size of 75 μm and TiB with a particle size of 3 μm 2 The powder is mixed by ball milling to make the fine TiB 2 The powder is uniformly coated on the surface of the large particle Ti-6Al-4V, thus obtaining TiB 2 / Ti-6Al-4V mixed powder, the process conditions are as follows: the ball milling speed is 90r / min, the ball milling time is 10h, and the mass ratio of ball to material is 5:1.

[0029] (2) Cold press forming: TiB 2 / Ti-6Al-4V mixed powder is placed in a metal sheath, and is formed by cold pressing at a pressure of 800MPa, then vacuum degassed, sealed and welded to obtain an extrusion billet, and the vacuum degree is 10 -3 Pa.

[0030] (3) Pre-sintering and hot extrusion: Pre-sinter the extruded billet obtained in step (2) at 1000°C for 2 hours, and in situ react self-generated TiB whiskers (TiBw) to obtain a pre-sintered extruded billet . Then, the pre-sintered extr...

Embodiment 3

[0033] (1) Low-energy ball mill mixed powder: spherically atomized Ti-6Al-4V powder with a particle size of 175 μm and TiB with a particle size of 1 μm 2 The powder is mixed by ball milling to make the fine TiB 2 The powder is uniformly coated on the surface of the large particle Ti-6Al-4V, thus obtaining TiB 2 / Ti-6Al-4V mixed powder, the process conditions are as follows: the ball milling speed is 150r / min, the ball milling time is 6h, and the mass ratio of ball to material is 5:1.

[0034] (2) Cold pressing forming: TiB 2 / Ti-6Al-4V mixed powder is placed in a metal sheath, and it is formed by cold pressing at a pressure of 1000MPa, then vacuum degassed, sealed and welded to obtain an extrusion billet, and the vacuum degree is 10 -3 Pa.

[0035] (3) Pre-sintering and hot extrusion: Pre-sinter the extrusion billet obtained in step (2) at 1200°C for 0.5h, and in situ react self-generated TiB whiskers (TiBw) to obtain pre-sintered extrusion billet. Then, the pre-sintered ...

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
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a TiBw/Ti-6Al-4V composite bar adopting a quasi-continuous reticular structure and solves problems that existing Ti-6Al-4V composites are harsh in technological condition, high in equipment requirement, low in production efficiency, difficult to produce on a large scale and the like. The method comprises steps as follows: low-energy ball milling and mixing are performed on spherical Ti-6Al-4V powder and TiB2 powder firstly; then TiB2/Ti-6Al-4V mixed powder is placed in a metal sheath for cold press molding, and vacuum degassing and sheath sealing welding are performed to obtain an extrusion billet; finally, short-time pre-sintering is performed on the obtained extrusion billet, and hot extrusion deformation is performed on the pre-sintered extrusion billet to obtain a required material. The method can be applied to preparation of a TiBw/Ti-6Al-4V composite adopting the quasi-continuous reticular structure.

Description

technical field [0001] The invention relates to a material preparation method, in particular to a preparation method of a quasi-continuous network structure TiBw / Ti-6Al-4V composite material bar. Background technique [0002] Titanium-based composites have better high-temperature performance and creep resistance than titanium alloys, and can be widely used in aerospace, automobiles, ships, and chemicals. However, titanium-based composites are limited by the high cost of preparation and difficulty in forming. its wider application. [0003] Usually, in order to prepare TiBw / Ti-6Al-4V composite material rods, the TiBw / Ti-6Al-4V composite material billets are first prepared by melting casting or powder metallurgy, and then thermally deformed to obtain the required specifications of the titanium base. Composite rods. However, the TiBw / Ti-6Al-4V composite ingot prepared by melting and casting method has coarse structure, shrinkage cavity, porosity and component segregation, etc...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C14/00
Inventor 张文丛陈文振杨建雷于洋冯养巨
Owner HARBIN INST OF TECH AT WEIHAI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap