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Erschienen in: Journal of Materials Science 11/2017

21.02.2017 | Original Paper

Electrical resistivity mapping of titanium and zirconium discs processed by high-pressure torsion for homogeneity and phase transformation evaluation

verfasst von: Rin Haraguchi, Yuuki Yoshimatsu, Takashi Nagaoka, Makoto Arita, Kaveh Edalati, Zenji Horita

Erschienen in: Journal of Materials Science | Ausgabe 11/2017

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Abstract

High-pressure torsion (HPT) was applied to discs of pure Ti and Zr under pressures of 2 and 6 GPa, and the evolution of electrical resistivity was investigated. The electrical resistivity increased with increasing the distance from the disc centre in both Ti and Zr, but the distribution of electrical resistivity became more homogenous with increasing the number of HPT turns, i.e. with increasing the shear strain. The electrical resistivity increased more significantly when Ti and Zr were processed under 6 GPa because of the formation of high-pressure ω phase. The distribution of hardness with distance from disc centre and number of HPT turns were basically similar to those of electrical resistivity distribution. In situ electrical resistivity measurements during heating confirmed that the ω-Zr phase was thermally more stable than the ω-Ti phase.

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Metadaten
Titel
Electrical resistivity mapping of titanium and zirconium discs processed by high-pressure torsion for homogeneity and phase transformation evaluation
verfasst von
Rin Haraguchi
Yuuki Yoshimatsu
Takashi Nagaoka
Makoto Arita
Kaveh Edalati
Zenji Horita
Publikationsdatum
21.02.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 11/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-0916-x

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