Constrained martensitic transformation in an in situ lamella TiNi/NbTi shape memory composite

  • Daqiang Jiang
  • , Lishan Cui*
  • , Yanjun Zheng
  • , Xinqing Zhao
  • , Yan Li
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

An in situ lamella TiNi/NbTi shape memory composite was obtained by hot-forging and cold-rolling of an as-cast NbTiNi alloy. Scanning electron microscope (SEM) analysis showed that the TiNi lamella achieved micron level. The constrained martensitic transformation of the TiNi phase was investigated by using differential scanning calorimeter (DSC) and thermal dilatation analyzer. Experimental results indicated that the thermal dilatation test could reveal some delicate details of the constrained martensitic transformation and therefore was an important compensation to the traditional DSC measurement. Based on these results, a schematic illustration was presented for elucidating the constrained martensitic transformation of TiNi in shape memory composite.

Original languageEnglish
Pages (from-to)131-133
Number of pages3
JournalMaterials Science and Engineering: A
Volume515
Issue number1-2
DOIs
StatePublished - 25 Jul 2009

Keywords

  • Martensitic transformation
  • NbTiNi
  • Shape memory materials

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