High-pressure twisting-electric field assistant thermal treatment fine grain method for ZrTiAlV alloy

An electric field-assisted, high-pressure spinning technology is applied in the field of ZrTiAlV alloy fine-grain treatment, which can solve problems such as shortening the heat treatment time of zirconium alloys, and achieve the effect of superior comprehensive mechanical properties

Inactive Publication Date: 2016-02-03
YANSHAN UNIV
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no further research has been done on the uniform and finer grain size of the 47Zr-45Ti-5Al-3V alloy and the shortening of the heat treatment time of the zirconium 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
  • High-pressure twisting-electric field assistant thermal treatment fine grain method for ZrTiAlV alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put the upper and lower ends of the 47Zr-45Ti-5Al-3V sheet sample 2 with a thickness of 1.5 to 2mm into the upper graphite mold 1 and the lower graphite mold 3 respectively, and place the assembled alloy sample and mold in the discharge plasma In the sintering machine, the upper pressure head goes down to apply a pressure of 5 MPa to the sample, and then the vacuum degree is evacuated to 10 -3 Pa. The specific sintering power supply and pressing pressure are applied to the 47Zr-45Ti-5Al-3V sheet sample by using the upper and lower indenters and energized electrodes. The plasma generated by the pulse current causes the internal ion discharge of the alloy sample to generate heat, and the alloy rapidly Heat up to 600°C for solid solution treatment, then strictly control the temperature and keep it warm for 20 minutes, and finally turn off the power and cool naturally. The plate after solid solution treatment is subjected to high-pressure twisting under a pressure of 4GPa,...

Embodiment 2

[0018] Put the upper and lower ends of the 1.5-2mm thick 47Zr-45Ti-5Al-3V sheet sample into the upper and lower graphite molds respectively, put the assembled alloy sample and mold in the spark plasma sintering machine, The indenter goes down to apply a pressure of 5MPa to the sample, and then pump the vacuum to 10 -3 Pa. The specific sintering power supply and pressing pressure are applied to the 47Zr-45Ti-5Al-3V sheet sample by using the upper and lower indenters and energized electrodes. The plasma generated by the pulse current causes the internal ion discharge of the alloy sample to generate heat, and the alloy rapidly Heat up to 600°C for solid solution treatment, then strictly control the temperature and keep it warm for 20 minutes, and finally turn off the power and cool naturally. The plate after solid solution treatment is subjected to high-pressure twisting under 5GPa pressure to rotate the lower mold at a rotation angle of 360°, and then annealed and recrystallize...

Embodiment 3

[0020] Put the upper and lower ends of the 1.5-2mm thick 47Zr-45Ti-5Al-3V sheet sample into the upper and lower graphite molds respectively, put the assembled alloy sample and mold in the spark plasma sintering machine, The indenter goes down to apply a pressure of 5MPa to the sample, and then pump the vacuum to 10 -3 Pa. The specific sintering power supply and pressing pressure are applied to the 47Zr-45Ti-5Al-3V sheet sample by using the upper and lower indenters and energized electrodes. The plasma generated by the pulse current causes the internal ion discharge of the alloy sample to generate heat, and the alloy rapidly Heat up to 700°C for solid solution treatment, then strictly control the temperature and keep it warm for 20 minutes, and finally turn off the power and let it cool naturally. The plate after solid solution treatment is subjected to high-pressure twisting under a pressure of 4GPa, that is, the lower mold is rotated at a rotation angle of 360°, and then ann...

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 sizeaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-pressure twisting-electric field assistant thermal treatment fine grain method for a ZrTiAlV alloy. The high-pressure twisting-electric field assistant thermal treatment fine grain method mainly comprises the following steps: performing vacuum electric field assistant solution treatment on 47Zr-45Ti-5Al-3V alloy plates on spark plasma sintering equipment at the temperature of 600 DEG C, 700 DEGC or 800 DEGC, keeping the temperature for 20 minutes, and subsequently turning off the power to naturally cool and reduce the temperature; performing high-pressure twisting on the plate after solution treatment under the pressure of 4GPa or 5GPa in a twisting angle of 360 degrees; performing vacuum electric field assistant recrystallization annealing treatment on the 47Zr-45Ti-5Al-3V alloy plates subjected to different solution treatment and high-pressure twisting processes at the temperature of 800 DEGC, and keeping the temperature for 20 minutes, wherein the vacuum degree is 10-3Pa. The crystal size of the finally prepared 47Zr-45Ti-5Al-3V alloy plate is within 20-120mu m, the yield strength is within 1173-1307MPa, the tensile strength is 1325-1484MPa, and the ductility is within 11.2-15.7%.

Description

technical field [0001] The invention relates to an alloy fine-grain treatment method, in particular to a ZrTiAlV alloy fine-grain treatment method. Background technique [0002] Zirconium and zirconium alloys have excellent radiation resistance, small neutron absorption cross-sectional area, good corrosion resistance and oxidation resistance, and are widely used in the nuclear industry and the acetic acid industry. The ZrTiAlV quaternary zirconium alloy not only has good plasticity, but also has high strength. It is one of the zirconium alloy varieties that develop rapidly in the field of structural materials. [0003] Liu Riping, Liang Shunxing and others first synthesized the 47Zr-45Ti-5Al-3V alloy, and conducted in-depth research on the material properties of the forged state, annealed state and solution treatment, and clarified the basic properties of the material in various states. Mechanical properties and microstructure. However, no further research has been done on...

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): C22F1/18C22F3/02
Inventor 骆俊廷张春祥刘日平赵伯俊
Owner YANSHAN UNIV
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