Titanium boride nanowhisker reinforced titanium-based composite material and preparation method thereof

A technology of titanium-based composite materials and nano-whiskers is applied in the field of metal-based nano-structure composite materials, which can solve the problems of insignificant strengthening effect and low plasticity.

Active Publication Date: 2018-07-31
BAOSHAN IRON & STEEL CO LTD
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this type of method continues to use TiB micro-whiskers as a strengthening phase, its strengthening ...

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 boride nanowhisker reinforced titanium-based composite material and preparation method thereof
  • Titanium boride nanowhisker reinforced titanium-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Proportion the Ti6Al4V powder with a particle size of 45-75 μm and the nano-boron (B) powder with a particle size of 100 nm, so that the TiB content in the titanium matrix after reaction is 5 vol.%. The ball makes the ball-to-material ratio 2:1, and argon (Ar) is sealed in the container as a protective gas; the stainless steel container is placed on the Turbula mixer, the speed is 150rmp, and the mixing time is 4h; the mixed powder is taken out and placed into a graphite mold, and then discharge plasma sintering at 30MPa and 1000°C for 7 minutes to obtain a TiB nano-whisker strengthened α+β-Ti alloy-based composite material; the length of the nano-whiskers is 5-30 μm, and the diameter is 50-300 nm. The aspect ratio is greater than 60. Its microstructure is as figure 1 shown.

[0032] The room temperature tensile strength of the obtained composite material is 1285MPa, the yield strength is 1140MPa, and the elongation is 7%. Compared with Ti6Al4V without TiB, its streng...

Embodiment 2

[0034] Pure Ti powder with a particle size of less than 45 μm and nano-B with a particle size of 50 nm 4C powder proportioning, make the TiB content after the reaction in the titanium matrix be 6.2vol.%; Proportioning powder is placed in the stainless steel container, and add stainless steel iron ball and make ball material ratio be 2:1, and argon (Ar ) is used as a protective gas and sealed in the container; the stainless steel container is placed on the Turbula mixer, the speed is 150rmp, and the mixing time is 4h; the mixed powder is taken out, placed in a graphite mold, and then discharged plasma sintering at 35MPa and 1100°C After 7 minutes, the TiB nano-whisker-strengthened Ti-based composite material is obtained; the nano-whiskers have a length of 5-30 μm, a diameter of 50-300 nm, and an aspect ratio greater than 60.

[0035] The room temperature tensile strength of the obtained composite material is 870MPa, the yield strength is 730MPa, and the elongation is 16%. Compa...

Embodiment 3

[0037] Mix pure Ti powder with a particle size of less than 45 μm and Fe powder with a particle size of less than 10 μm with nano-BN powder with a particle size of 30 nm, so that the composition of the composite material is Ti-0.25BN-2.5Fe; put the proportioned powder into a stainless steel container , and add stainless steel iron balls so that the ball-to-material ratio is 1:2, and argon (Ar) is sealed in the container as a protective gas; the stainless steel container is placed on the Turbula mixer, the rotating speed is 150rmp, and the mixing time is 3h; Take out the mixed powder, put it into a graphite mold, and then discharge plasma sintering at 30MPa and 1000°C for 8 minutes to obtain a TiB nano-whisker-strengthened β-Ti alloy matrix composite material; the nano-whiskers have a length of 5-30 μm and a diameter of 50 ~300nm, aspect ratio greater than 60.

[0038] The room temperature tensile strength of the obtained composite material is 958MPa, the yield strength is 830M...

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
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a titanium boride nanowhisker reinforced titanium-based composite material and a preparation method of the composite material. The composite material comprises a base body anda reinforcement phase. The base body is pure titanium or titanium alloy. The reinforcement phase is TiB nanowhiskers, the content is 0.5-12vol.%, and the distribution of the TiB nanowhiskers is of a net woven structure. The titanium alloy comprises alpha, alpha and beta and beta titanium alloy. Nanometer boron or nanometer boride is used as a raw material for generating TiB nanowhiskers to be mixed with pure titanium powder or titanium and alloying element mixed powder or titanium alloy prefabricated alloy powder to form a blank, selective discharge plasma low-temperature pressurization sintering is carried out for compactness, and the net woven distributed TiB nanowhiskers are obtained. The tensile strength of the titanium-based composite material is obviously improved, the tensile plasticity is excellently kept, and the elongation can reach 20% or above. The long-standing key problem that a titanium-based composite material prepared in the prior art is poor in plasticity when bearingtensile loads even being high in strength is solved.

Description

technical field [0001] The invention relates to the technical field of metal-based nanostructure composite materials that can be used as advanced structures and functional materials, aiming at realizing a titanium boride nano-whisker-reinforced titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium-based composites refer to composite materials strengthened by introducing ceramic reinforcement phases into the titanium or titanium alloy matrix. Its strength, wear resistance, and heat resistance are superior to similar titanium alloys. Broad application prospects. Generally speaking, the strength index of titanium-based composites can be significantly improved by introducing a higher content of ceramic reinforcement phase (>5vol.%), but the introduction of a large amount of reinforcement phase will greatly reduce the plasticity and toughness of the material. This is a common problem that plagues the development of metal ma...

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): C22C47/14C22C49/11C22C49/14C22C101/22
CPCC22C47/14C22C49/11C22C49/14
Inventor 黄立清马前邹进孙继锋赵欣
Owner BAOSHAN IRON & STEEL CO LTD
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