Dislocation character and operative slip systems in α-Nb5Si3 tested at 1673 K

N. Sekido, S. Miura, Y. Yamabe-Mitarai, Y. Kimura, Y. Mishima

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13 Citations (Scopus)


Dislocation character and operative slip systems in α-Nb5Si3 were examined by transmission electron microscopy. Two-phase alloys comprised of (Nb) and α-Nb5Si3 were used in this study. Although few dislocations were present in the α-Nb5Si3 phase of a pre-deformed alloy, many developed after 15% of compressive deformation at 1673 K. Two types of the Burgers vectors were identified for α-Nb5Si3: <100] and 1/2 < 111]. The glide planes of dislocations were defined by the cross products between the Burgers vectors and the line vectors of the dislocations, by which the slip systems that operate in α-Nb5Si3 at 1673 K were determined as {011)<111], {100)<010], and {001)<100].

Original languageEnglish
Pages (from-to)841-845
Number of pages5
Issue number5
Publication statusPublished - 2010 May
Externally publishedYes


  • A. Silicides, various
  • B. Mechanical properties at high temperatures
  • D. Dislocation geometry and arrangement
  • F. Electron microscopy, transmission

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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