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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus


IMPACT FACTOR 2018: 0.975
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2196-7156
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Volume 230, Issue 4

Issues

X-ray Fluorescence Holography for a Ti–Nb Binary Alloy Consisting of the Martensite, Austenite and Omega Phase

Tokujiro Yamamoto
  • Corresponding author
  • Department of Mechanical and Intelligent Engineering, Utsunomiya University, 7-1-2 Yoto, 321-8585 Utsunomiya, Japan
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/ Kouichi Hayashi
  • Department of Materials Science and Engineering, Nagoya Institute of Technology, 466-8555 Nagoya, Japan
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/ Naohisa Happo
  • Department of Frontier Sciences, Graduate School of Information Sciences, Hiroshima City University, 731-3194 Hiroshima, Japan
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/ Shinya Hosokawa
  • Department of Physics, Graduate School of Science and Technology, Kumamoto University, 860-8555 Kumamoto, Japan
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Published Online: 2016-01-27 | DOI: https://doi.org/10.1515/zpch-2015-0670

Abstract

The local atomic structure near an Nb atom in a Ti–20 at. %Nb alloy single crystal, which consists of the β, α′′ and ω Ti phases, was investigated by means of X-ray fluorescence holography (XFH). The atomic images were reconstructed in the vicinity of an Nb atom, which is one of the typical β stabilizing elements in β Ti alloys. Most atoms in the β Ti primary phase were reconstructed clearly. The atoms in the α′′ Ti martensite phase could not be reconstructed, because the α′′ Ti martensite has the crystal structure with low symmetry. Some atoms in the ω Ti fine precipitates were reconstructed successfully, although the amount of the ω Ti phase was much smaller than that of the β phase. An Nb atom and its first nearest neighbors tend to keep the BCC structure even upon the ω Ti phase formation.

Keywords: Ti Alloys; Omega Phase; Martensite; X-ray Fluorescence Holography

About the article

Accepted: 2015-12-13

Received: 2015-07-30

Published Online: 2016-01-27

Published in Print: 2016-04-28


Citation Information: Zeitschrift für Physikalische Chemie, Volume 230, Issue 4, Pages 509–517, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2015-0670.

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