Tensile strain-hardening behavior and related deformation mechanisms of pure titanium at cryogenic temperature

The tensile strain-hardening behavior of pure Ti at 100 K was investigated using X-ray diffraction line-profile analysis and plasticity simulation. The strain hardening was significantly increased at 100 K, compared with that observed at 298 K. Thus, at 100 K, necking was suppressed during tensile t...

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Bibliographic Details
Published inJournal of materials research and technology Vol. 26; pp. 1669 - 1676
Main Authors Won, Jong Woo, Suh, Byeong-Chan, Jeong, Jae Suk, Hyun, Yong-Taek, Lee, Min-Su, Jun, Tea-Sung
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2023
Elsevier
Subjects
Cryogenic deformation
Slip
Tension test
Titanium
Work hardening
Titanium
Work hardening
Cryogenic deformation
Tension test
Slip
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Summary:The tensile strain-hardening behavior of pure Ti at 100 K was investigated using X-ray diffraction line-profile analysis and plasticity simulation. The strain hardening was significantly increased at 100 K, compared with that observed at 298 K. Thus, at 100 K, necking was suppressed during tensile testing, which greatly increased material ductility. The remarkable increase in strain hardening at 100 K was attributed to the dominant activation of prismatic slip and the exceptionally increased rate of its activation stress with tensile strain at 100 K. This finding significantly advances the understanding of the strain-hardening behavior of pure Ti at low temperatures, and it can also guide the development of texture-engineering strategies to increase the low-temperature ductility of pure Ti.
ISSN:2238-7854
DOI:10.1016/j.jmrt.2023.08.010