Shape memory behavior of high strength Ni54Ti46 alloys

H. E. Karaca, I. Kaya, H. Tobe, B. Basaran, M. Nagasako, R. Kainuma, Y. Chumlyakov

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


Shape memory behavior of highly Ni-rich Ni54Ti46 alloys was studied after aging (550°C, 3h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500MPa is applied.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Publication statusPublished - 2013 Sept 5


  • High strength
  • Mechanical characterization
  • NiTi
  • R-phase transformation
  • Shape memory alloys


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