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
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ISSN1345-9678
1347-5320
DOI10.2320/matertrans.MT-MC2024020

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Summary: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.
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ISSN:1345-9678
1347-5320
DOI:10.2320/matertrans.MT-MC2024020