Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Titanium alloy and preparation method thereof

A technology of titanium alloy and titanium powder, which is applied in the field of titanium alloy and its preparation, can solve the problems of poor toughness of Ti-Fe alloy and achieve the effect of solving poor toughness, high strength and realizing continuous production

Active Publication Date: 2019-05-24
GUANGDONG INST OF NEW MATERIALS
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention includes providing a preparation method of titanium alloy, which can not only reduce the preparation cost of titanium alloy, but also effectively solve the problem of poor toughness of Ti-Fe alloy

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
  • Titanium alloy and preparation method thereof
  • Titanium alloy and preparation method thereof
  • Titanium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the titanium alloy provided by the application comprises the following steps:

[0029] The titanium powder and iron powder are mixed according to the mass ratio of 99.5:0.5-95:5, followed by forming, sintering, thermal deformation processing and vacuum heat treatment in sequence; wherein, the sintering is carried out in a hydrogen-containing atmosphere.

[0030] Among them, the oxygen content of the titanium powder and the oxygen content of the iron powder are not more than 0.3wt%. The reason may be that the toughness of the titanium alloy is sensitive to the oxygen content. When the oxygen content is higher than 0.3wt%, the toughness of the material will be greatly reduced.

[0031] Usually, the strength and hardness of pure titanium are relatively low, and it is often necessary to add some alloying elements to make the strength and hardness meet the requirements of use. However, adding Fe to Ti will greatly reduce the toughness of the alloy. ...

Embodiment 1

[0056] Using hydrogenated dehydrogenation Ti powder (oxygen content 0.2%) with an average particle size of 69 μm and 2.5 μm Fe powder (oxygen content 0.3%) as raw materials, the powder is weighed according to the mass ratio Ti:Fe=99.5:0.5. Mix on a mixer for 8 hours; put the powder into a rubber mold, and after being vibrated, shape it in a cold isostatic press with a pressure of 180 MPa and keep the pressure for 6 minutes; 100%), sintering at 1250°C, heat preservation for 2 hours, then lower the temperature to 250°C, heat preservation for 3 hours, and cool down to room temperature with the furnace to prepare the sintered billet; preheat the sintered billet at 950°C for 1 hour, then carry out hot rolling treatment, single deformation The amount is 10%, and the cumulative deformation is 50%; the degree of vacuum is 1×10 -2 Heat treatment is carried out in a Pa vacuum sintering furnace, the treatment temperature is 650 °C, the holding time is 8 hours, and the temperature is lowe...

Embodiment 2

[0059] Using hydrogenated dehydrogenation Ti powder (oxygen content 0.2%) with an average particle size of 69 μm and 2.5 μm Fe powder (oxygen content 0.3%) as raw materials, the powder is weighed according to the mass ratio Ti:Fe=99:1. Mix on a mixer for 8 hours; put the powder into a rubber mold, and after vibration, shape it in a cold isostatic press with a pressure of 180 MPa and keep the pressure for 6 minutes; 10%), sintering at 1200°C, heat preservation for 1h, then cooling down to 300°C, heat preservation for 2h, cooling down to room temperature with the furnace, and preparing sintered billet; preheating the sintered billet at 960°C for 1h, then hot rolling, single The amount of deformation is 10%, and the cumulative amount of deformation is 60%; the degree of vacuum is 1×10 -2 Heat treatment is carried out in a Pa vacuum sintering furnace, the treatment temperature is 700 ° C, the holding time is 7 hours, and the temperature is lowered to room temperature with the furn...

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
Tensile strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a titanium alloy and a preparation method thereof, and belongs to the technical field of powder metallurgy. The preparation method comprises the following steps that titanium powder and iron powder are mixed according to the mass ratio of (99.5: 0.5)-(95: 5) of the titanium powder to the iron powder, and then forming, sintering, heat deformation processing and vacuum heat treatment are conducted sequentially; and sintering is conducted in an atmosphere containing hydrogen. According to the preparation method, the preparation cost of the titanium alloy can be lowered, theproblem of poor toughness of a Ti-Fe alloy can be effectively solved, and the titanium alloy prepared through the preparation method has high strength, hardness and elongation.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a titanium alloy and a preparation method thereof. Background technique [0002] Titanium alloy has the characteristics of low density, high specific strength, corrosion resistance and excellent biocompatibility. It has very important application value and broad application prospects in aerospace, navigation, chemical industry, automobile, sports and leisure, medical and other fields. However, the high cost greatly limits its practical applications. The search for high-performance and low-cost preparation technology has always been the research focus of titanium-based materials. [0003] As a less-cut or no-cut manufacturing technology, powder metallurgy technology has a material utilization rate close to 100%, and is considered to be an important method that can effectively reduce the cost of titanium alloy products. Powder metallurgy titanium products with propertie...

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
IPC IPC(8): B22F3/10B22F3/24B22F3/04B22F3/18C22C1/04C22C14/00
Inventor 闫志巧陈峰许荣君施麒
Owner GUANGDONG INST OF NEW MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com