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Martensite deformation during the phase transformation of TiNi shape-memory alloy under constraint

  • Yan Li*
  • , Lishan Cui
  • , Xinqing Zhao
  • , Dazhi Yang
  • *Corresponding author for this work
  • China University of Petroleum - Beijing

Research output: Contribution to journalConference articlepeer-review

Abstract

Martensite deformation in constrained phase transformation of TiNi shape memory alloy has been studied with differential scanning calorimeter (DSC) and strain recovery measurements. It is shown that martensite deformation occurs in both the reverse and forward transformations for prestrained TiNi shape memory alloy fibers under constraint with constant strain. Two sorts of martensite, the redeformed martensite and the inheriting deformation martensite, exist after a constrained thermal cycle. In the subsequent free reverse transformation, two-stages of strain recovery appear corresponding to the reverse transformations of the inheriting deformation martensite and the redeformed martensite, respectively.

Original languageEnglish
Pages (from-to)265-268
Number of pages4
JournalMaterials Science Forum
Volume394-395
DOIs
StatePublished - 2002
Externally publishedYes
EventProceedings of the International Conference on Shape Memory and Superelastic Technologies and Shape Memory Materials (SMST-SMM 2001) - Kumning, China
Duration: 2 Sep 20016 Sep 2001

Keywords

  • Constrained Thermal Cycles
  • Martensite Deformation
  • Martensitic Transformation
  • TiNi Shape-Memory Alloy

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