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

Cryogenic treatment method of graphene reinforced Ti2AlNb composite material

A technology for cryogenic treatment and composite materials, which is applied in the field of cryogenic treatment of graphene-reinforced Ti2AlNb composite materials, can solve problems such as affecting the bonding performance of composite interfaces, reducing the comprehensive performance of composite materials, and large residual stress of composite materials, so as to improve the bonding performance of the interface. , Improve the comprehensive mechanical properties and reduce the effect of residual stress

Inactive Publication Date: 2021-02-26
NANCHANG HANGKONG UNIVERSITY
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to graphene and Ti 2 AlNb alloy has a large difference in thermal expansion coefficient. The high-temperature preparation process of the composite material will cause a large residual stress inside the composite material, which will affect the bonding performance of the composite interface and seriously reduce the comprehensive performance of the composite material.

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
  • Cryogenic treatment method of graphene reinforced Ti2AlNb composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A graphene-enhanced Ti 2 The cryogenic treatment method of AlNb composite material,

[0018] Step 1. Graphene Reinforced Ti 2 Put the AlNb composite material sample into the cryogenic treatment device, and seal the device;

[0019] Step 2. Fill liquid nitrogen into the airtight cryogenic treatment device to lower the internal temperature from room temperature to minus 130°C at a cooling rate of 10°C / min, keep the temperature for 5 hours, and then drop to minus 196°C at a cooling rate of 20°C / min. ℃, holding time is 20 hours;

[0020] Step 3. Raise the temperature of the sample in the cryogenic treatment device to room temperature at a heating rate of 5°C / min;

[0021] Step 4. Repeat the cryogenic treatment for 4 times as described in step 2 and step 3 with the cryogenically treated sample obtained in step 3 and then take out the sample.

Embodiment 2

[0023] A graphene-enhanced Ti 2 The cryogenic treatment method of AlNb composite material,

[0024] Step 1. Graphene Reinforced Ti 2 Put the AlNb composite material sample into the cryogenic treatment device, and seal the device;

[0025] Step 2. Fill liquid nitrogen into the airtight cryogenic treatment device, make its internal temperature drop from room temperature to minus 100°C at a cooling rate of 1°C / min, keep it warm for 1 hour, and then drop to minus 130°C at a cooling rate of 1°C / min ℃, holding time is 20 hours;

[0026] Step 3. Raise the temperature of the sample in the cryogenic treatment device to room temperature at a heating rate of 1°C / min;

[0027] Step 4. Repeat the cryogenic treatment for 4 times as described in step 2 and step 3 with the cryogenically treated sample obtained in step 3 and then take out the sample.

Embodiment 3

[0029] A graphene-enhanced Ti 2 The cryogenic treatment method of AlNb composite material,

[0030] Step 1. Graphene Reinforced Ti 2 Put the AlNb composite material sample into the cryogenic treatment device, and seal the device;

[0031] Step 2. Fill liquid nitrogen into the airtight cryogenic treatment device, make its internal temperature drop from room temperature to minus 130°C at a cooling rate of 30°C / min, keep it warm for 5 hours, and then drop to minus 150°C at a cooling rate of 30°C / min ℃, holding time is 20 hours;

[0032] Step 3. Raise the temperature of the sample in the cryogenic treatment device to room temperature at a heating rate of 20°C / min;

[0033] Step 4. Repeat the cryogenic treatment for 4 times as described in step 2 and step 3 with the cryogenically treated sample obtained in step 3 and then take out the sample.

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

No PUM Login to View More

Abstract

The invention discloses a cryogenic treatment method of a graphene reinforced Ti2AlNb composite material, and belongs to the technical field of metal matrix composite materials and preparation thereof. In order to eliminate or reduce interface stress inside the composite material, the graphene reinforced Ti2AlNb composite material is put into a cryogenic treatment device, then the cryogenic treatment device is filled with liquid nitrogen, so that the composite material is continuously or stepwise cooled to cryogenic treatment temperature according to a set cooling speed, heat preservation is performed for a certain period of time, the temperature is raised to the room temperature according to a set temperature raising speed, and one-time cryogenic treatment of the composite material is completed; the composite material can be subjected to one-time or multi-time repeated cryogenic treatment; and the cryogenic treatment can eliminate or reduce the residual stress at the interface beatween graphene and a Ti2AlNb matrix, optimize the stress state, improve the interface bonding performance and effectively improve the comprehensive mechanical properties.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite materials and their preparation, in particular to a graphene-reinforced Ti 2 Cryogenic treatment method of AlNb composites. Background technique [0002] Graphene reinforced Ti 2 AlNb composite materials have good high-temperature performance, low density, and good oxidation resistance. They are considered to be the key high-temperature structural materials used in aero-engines in the future to replace the current nickel-based superalloys, and have very important application prospects. Graphene reinforced Ti 2 AlNb composites compared to Ti 2 AlNb alloy has good room temperature plasticity and toughness. However, due to graphene and Ti 2 The AlNb alloy has a large difference in thermal expansion coefficient. The high-temperature preparation process of the composite material will cause a large residual stress inside the composite material, which will affect the bonding performan...

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): C22F1/18
CPCC22F1/183
Inventor 熊博文刘康严青松王振军彭放李君昱蔡长春
Owner NANCHANG HANGKONG UNIVERSITY
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