Quenched-in vacancies in a β Ti-Nb-Sn alloy studied by positron lifetime spectroscopy

Y. Nagai; T. Toyama; Z. Tang; M. Hasegawa; Hiroaki Matsumoto; S. Hanada

doi:10.1016/j.scriptamat.2006.01.040

Quenched-in vacancies in a β Ti-Nb-Sn alloy studied by positron lifetime spectroscopy

Y. Nagai, T. Toyama, Z. Tang, M. Hasegawa, Hiroaki Matsumoto, S. Hanada

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19 Citations (Scopus)

Abstract

Quenched-in vacancies in a β Ti-Nb-Sn alloy are studied by positron annihilation spectroscopy. It has been reported that the superelastic properties of the alloy are strongly affected by the quenching temperature between 700 and 900 °C, as a consequence of the different concentrations of quenched-in vacancies. However, the present positron lifetime experiments and the corresponding first-principles calculations show that the vacancy concentration is very low (sub ppm level) for all specimens quenched from 700, 800 and 900 °C, suggesting that the variation in superelastic properties should be attributed to other factors.

Original language	English
Pages (from-to)	1751-1753
Number of pages	3
Journal	Scripta Materialia
Volume	54
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2006.01.040
Publication status	Published - 2006 May

Keywords

Positron annihilation
Titanium alloys
Vacancies

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2006.01.040

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title = "Quenched-in vacancies in a β Ti-Nb-Sn alloy studied by positron lifetime spectroscopy",

abstract = "Quenched-in vacancies in a β Ti-Nb-Sn alloy are studied by positron annihilation spectroscopy. It has been reported that the superelastic properties of the alloy are strongly affected by the quenching temperature between 700 and 900 °C, as a consequence of the different concentrations of quenched-in vacancies. However, the present positron lifetime experiments and the corresponding first-principles calculations show that the vacancy concentration is very low (sub ppm level) for all specimens quenched from 700, 800 and 900 °C, suggesting that the variation in superelastic properties should be attributed to other factors.",

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author = "Y. Nagai and T. Toyama and Z. Tang and M. Hasegawa and Hiroaki Matsumoto and S. Hanada",

note = "Funding Information: This work is partly supported by the Radioactive Waste Management Funding and Research Center and a Grant-in-Aid for Scientific Research of the Ministry of Education, Science and Culture (Nos. 170020009, 15106015 and 15360330).",

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T1 - Quenched-in vacancies in a β Ti-Nb-Sn alloy studied by positron lifetime spectroscopy

AU - Nagai, Y.

AU - Toyama, T.

AU - Tang, Z.

AU - Hasegawa, M.

AU - Matsumoto, Hiroaki

AU - Hanada, S.

N1 - Funding Information: This work is partly supported by the Radioactive Waste Management Funding and Research Center and a Grant-in-Aid for Scientific Research of the Ministry of Education, Science and Culture (Nos. 170020009, 15106015 and 15360330).

PY - 2006/5

Y1 - 2006/5

N2 - Quenched-in vacancies in a β Ti-Nb-Sn alloy are studied by positron annihilation spectroscopy. It has been reported that the superelastic properties of the alloy are strongly affected by the quenching temperature between 700 and 900 °C, as a consequence of the different concentrations of quenched-in vacancies. However, the present positron lifetime experiments and the corresponding first-principles calculations show that the vacancy concentration is very low (sub ppm level) for all specimens quenched from 700, 800 and 900 °C, suggesting that the variation in superelastic properties should be attributed to other factors.

AB - Quenched-in vacancies in a β Ti-Nb-Sn alloy are studied by positron annihilation spectroscopy. It has been reported that the superelastic properties of the alloy are strongly affected by the quenching temperature between 700 and 900 °C, as a consequence of the different concentrations of quenched-in vacancies. However, the present positron lifetime experiments and the corresponding first-principles calculations show that the vacancy concentration is very low (sub ppm level) for all specimens quenched from 700, 800 and 900 °C, suggesting that the variation in superelastic properties should be attributed to other factors.

KW - Positron annihilation

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KW - Vacancies

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Quenched-in vacancies in a β Ti-Nb-Sn alloy studied by positron lifetime spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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