Mechanical response of NiFeGa alloys containing second-phase particles

R. F. Hamilton, H. Sehitoglu, C. Efstathiou, H. J. Maier

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Tensile and compressive strain-temperature and stress-strain responses have been used for the first time to investigate the effects of second-phase particles on the deformation of NiFeGa shape memory alloys. Particles are conducive to the dissipation of stored energy; stress and thermal hysteresis increase three-fold in aged alloys. Although dissipation is severe, recoverable strain levels are as large as +12% and -6%, which match strains for the unaged alloys. These results demonstrate that second-phase particles can be used to tailor the hysteresis while maintaining large transformation strains.

Original languageEnglish (US)
Pages (from-to)497-499
Number of pages3
JournalScripta Materialia
Issue number6
StatePublished - Sep 2007

All Science Journal Classification (ASJC) codes

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


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