Plastic deformation behavior and mechanism of bismuth single crystals in principal axes

Yuichi Yanaka, Yoshiharu Kariya, Hirohiko Watanabe, Hiroaki Hokazono

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6 Citations (Scopus)


Tensile tests of single-crystal bismuth were performed for the a1-axis [21-1-0], a2-axis [121-0] and c-axis [0001]. The mechanism of the a1-axis and a2-axis plastic deformation at 298 K is twinning deformation at the initial deformation stage. Subsequent plastic deformation mechanism is the slip deformation that occurs by the changes in the crystallographic orientation inside twin crystals that is advantageous to the slip. The mechanism of the c-axis plastic deformation at 298 K is slip deformation, where the secondary slip system becomes activated. On the other hand, the slip deformation is the primary deformation mechanism and twinning deformation is not observed for any axes at 423 K.

Original languageEnglish
Pages (from-to)819-823
Number of pages5
JournalMaterials Transactions
Issue number6
Publication statusPublished - 2016



  • Bismuth
  • Plastic deformation
  • Single crystal
  • Slip system
  • Tensile test
  • Twin deformation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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