Isothermal Martensitic Transformations in an Aged Ni-Rich Ti-Ni Alloy Containing Coherent Ti3Ni4 Particles

Hiroshi Akamine, Yohei Soejima, Tadaaki Nakamura, Farjami Sahar, Takashi Fukuda, Tomoyuki Kakeshita, Minoru Nishida

Research output: Contribution to journalArticle


The time dependence nature of B2 (ordered cubic) to R (trigonal) and R to B19A (monoclinic) martensitic transformations in an aged Ni-rich Ti-Ni alloy was investigated by electrical resistivity measurements. Both B2 to R and R to B19A transformations exhibit time dependence nature in the aged alloy containing coherent lenticular Ti3Ni4 precipitates with an average diameter of about 110 nm. However, the successive B2-R-B19A isothermal transformation is not detected by electrical resistivity measurements. The isothermal R-B19A transformation is visualized by in situ scanning electron microscopy (SEM) observations.

Original languageEnglish
Pages (from-to)37-41
Number of pages5
JournalMaterials Transactions
Issue number1
Publication statusPublished - Jan 1 2020


All Science Journal Classification (ASJC) codes

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

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