Effect of Shock Loading on ω Phase Formation in Pre-Strained Pure Titanium

This study examines the effect of shock loading on allotropic transformation of pure Ti. The samples are initially processed by high-pressure torsion under 2 and 6 GPa to impart intense shear strain and they are subjected to shock loading at an impact speed of 702 m/s. X-ray diffraction analysis as...

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Published inMATERIALS TRANSACTIONS Vol. 66; no. 5; pp. 584 - 589
Main Authors Masuda, Takahiro, Shiraishi, Takahisa, Tokuda, Makoto, Horita, Zenji, Hokamoto, Kazuyuki, Kiguchi, Takanori, Tanaka, Shigeru
Format Journal Article
LanguageEnglish
Published Sendai The Japan Institute of Metals and Materials 01.05.2025
公益社団法人 日本金属学会
Japan Science and Technology Agency
Subjects
Allotropic transformation
Hardness measurement
High pressure
high-pressure torsion
Impact velocity
pure Ti
severe plastic deformation
Shear strain
Shock loading
Vickers microhardness
XRD
Online AccessGet full text
ISSN1345-9678
1347-5320
DOI10.2320/matertrans.MT-MC2024020

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Abstract This study examines the effect of shock loading on allotropic transformation of pure Ti. The samples are initially processed by high-pressure torsion under 2 and 6 GPa to impart intense shear strain and they are subjected to shock loading at an impact speed of 702 m/s. X-ray diffraction analysis as well as hardness measurement is carried out to check the formation of ω phase. It is shown that intense shear strain before shock loading does not promote the ω phase formation but concurrent shear straining under high pressure is effective for the ω phase formation.
AbstractList This study examines the effect of shock loading on allotropic transformation of pure Ti. The samples are initially processed by high-pressure torsion under 2 and 6 GPa to impart intense shear strain and they are subjected to shock loading at an impact speed of 702 m/s. X-ray diffraction analysis as well as hardness measurement is carried out to check the formation of ω phase. It is shown that intense shear strain before shock loading does not promote the ω phase formation but concurrent shear straining under high pressure is effective for the ω phase formation.
This study examines the effect of shock loading on allotropic transformation of pure Ti. The samples are initially processed by high-pressure torsion under 2 and 6 GPa to impart intense shear strain and they are subjected to shock loading at an impact speed of 702 m/s. X-ray diffraction analysis as well as hardness measurement is carried out to check the formation of ω phase. It is shown that intense shear strain before shock loading does not promote the ω phase formation but concurrent shear straining under high pressure is effective for the ω phase formation.Fig. 2 XRD profiles after shock loading of annealed sample and HPT-processed samples under 2 GPa and 6 GPa through 1 turn. (Si peak is visible as standard.) (online color)
ArticleNumber MT-MC2024020
Author Hokamoto, Kazuyuki
Masuda, Takahiro
Tanaka, Shigeru
Shiraishi, Takahisa
Kiguchi, Takanori
Tokuda, Makoto
Horita, Zenji
Author_xml – sequence: 1
  fullname: Masuda, Takahiro
  organization: Graduate School of Engineering, Kyushu Institute of Technology
– sequence: 1
  fullname: Shiraishi, Takahisa
  organization: Magnesium Research Center, Kumamoto University
– sequence: 1
  fullname: Tokuda, Makoto
  organization: Institute of Industrial Nanomaterials (IINa), Kumamoto University
– sequence: 1
  fullname: Horita, Zenji
  organization: Synchrotron Light Application Center, Saga University
– sequence: 1
  fullname: Hokamoto, Kazuyuki
  organization: Institute of Industrial Nanomaterials (IINa), Kumamoto University
– sequence: 1
  fullname: Kiguchi, Takanori
  organization: Magnesium Research Center, Kumamoto University
– sequence: 1
  fullname: Tanaka, Shigeru
  organization: Institute of Industrial Nanomaterials (IINa), Kumamoto University
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Snippet This study examines the effect of shock loading on allotropic transformation of pure Ti. The samples are initially processed by high-pressure torsion under 2...
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SubjectTerms Allotropic transformation
Hardness measurement
High pressure
high-pressure torsion
Impact velocity
pure Ti
severe plastic deformation
Shear strain
Shock loading
Vickers microhardness
XRD
Title Effect of Shock Loading on ω Phase Formation in Pre-Strained Pure Titanium
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