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Martensitic transformation of Ti-Ni-Gd shape memory alloy

  • Ai Lian Liu*
  • , Ye Wu
  • , Wei Cai
  • , Min Li
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Shen Yang Liming Aero-Engine Group Corp.

Research output: Contribution to journalArticlepeer-review

Abstract

Martensitic transformation of (Ti49.3Ni50.7)1-xGdx(x=0, 1at%, 2at%, 10at%) shape memory alloys are investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show that the martensitic transformation type differs with different content of Gd adding to Ti-Ni alloys. In the alloy containing 2at% Gd, a two-step martensitic transformation is observed, whereas a one-step martensitic transformation is observed in the alloy containing 10at% Gd. The martensitic transformation temperatures increase rapidly with increasing Gd content to 2at%, and then tend to be stable when the Gd content is further increased. B19' martensite is observed in Ti-Ni-Gd alloys and its lattice is distorted with Gd addition.

Original languageEnglish
Pages (from-to)1765-1767
Number of pages3
JournalGongneng Cailiao/Journal of Functional Materials
Volume37
Issue number11
StatePublished - Nov 2006
Externally publishedYes

Keywords

  • Martensitic transformation
  • Rare earth Gd
  • TiNi shape memory alloys

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