Unusual complex high temperature structure of Fe2VSi

O. Nashima, Y. Yamaguchi, H. Higashi, T. Goto, T. Kaneko, S. Sasamori, H. Kimura, K. Kobayashi, R. Kainuma, K. Ishida, T. Kanomata

研究成果: Article査読

2 被引用数 (Scopus)


The α-Mn structure (A12) has been found above 1373 K as a new structure of Fe2VSi, which has the Heusler structure (L21) at room temperature. The Fe2VSi alloy with a single phase of the α-Mn structure was produced using the melt-quenching technique. When the sample was annealed at 1073 K, it transformed into the Heusler structure. In the next step, the Heusler Fe2VSi was annealed again at 1373 K and quenched into ice water, then the sample almost returned to the α-Mn structure. Detail of the crystal structure was investigated on the α-Mn phase by the neutron diffraction measurement. The high temperature α-Mn phase has more complex structure than the low temperature Heusler phase, and it is very unusual transformation because usually a high temperature phase has a simpler structure than its low temperature phase.

ジャーナルJournal of Alloys and Compounds
出版ステータスPublished - 2006 6 29

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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