Shape memory functionality under multi-cycles in NiTiHf

H. Sehitoglu, Y. Wu, L. Patriarca

Research output: Contribution to journalArticlepeer-review


The functionality of NiTiHf (25%Hf) shape memory alloy (SMA) was studied under isobaric temperature cycling experiments. Both the local and overall strains, determined with digital image correlation (DIC), displayed excellent stability and no measurable unrecovered elongation. The external stress levels were higher than 250 MPa and transformation temperature was 420 °C which exceeds other NiTi based alloys, demonstrating the outstanding potential of the NiTiHf alloys.

Original languageEnglish (US)
Pages (from-to)11-15
Number of pages5
JournalScripta Materialia
StatePublished - Mar 1 2017


  • Functional fatigue
  • High temperature shape memory alloy
  • NiTiHf
  • Shape memory effect

ASJC Scopus subject areas

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

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