Crystallography and morphology of twins in equiatomic TiPt martensite

M. Nishida, M. Matsuda, Y. Yasumoto, S. Yano, Y. Yamabe-Mitarai, T. Hara

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Twins in the B19 (2H) martensite in Ti-Pt shape memory alloy have been investigated by transmission electron microscopy. There are three twinning modes evident, i.e. {111}2H Type I, 〈121〉2H Type II and {101}2H compound twins. In addition to the 2H martensite, various long period stacking structures are observed such as 21̄12̄ stacking and incommensurate like modulated martensites. It Is frequently observed that two martensite structures derived from the identical closed packed plane of the parent phase coexist in the same area, namely, 'two-in-one' morphology. The crystallographic aspects of the 'two-in-one' morphology are also discussed.

Original languageEnglish
Pages (from-to)884-889
Number of pages6
JournalMaterials Science and Technology
Volume24
Issue number8
DOIs
Publication statusPublished - 2008

Keywords

  • Crystallography
  • Martensite
  • Shape memory alloy
  • Ti-Pt
  • Twinning

ASJC Scopus subject areas

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

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