In situ observation of stress-induced martensitic transformation and plastic deformation in TiNi alloy

Xiaoping Jiang, Moritaka Hida, Yoshito Takemoto, Akira Sakakibara, Hidehiro Yasuda, Hirotaro Mori

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Stress-induced martensitic transformation and plastic deformation in TiNi alloy have been investigated using transmission electron microscope with an in situ deformation technique. It was found that martensite bands were formed and grew with increasing strain and shrank with decreasing strain in tension. In the second deformation stage, a high density of looped dislocations was formed in the reverse-transformed matrix, while in the first deformation stage dislocations were not formed in the reverse-transformed matrix. The formation of dislocation in the second deformation stage is considered as bearing a relation to reverse martensitic transformation and twinning dislocations lying inside the stress-induced martensite.

Original languageEnglish
Pages (from-to)303-308
Number of pages6
JournalMaterials Science and Engineering A
Volume238
Issue number2
DOIs
Publication statusPublished - Nov 15 1997

Keywords

  • In situ deformation
  • Looped dislocation
  • Martensite band
  • Reverse martensitic transformation
  • Twin

ASJC Scopus subject areas

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

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