Isothermal martensitic transformation kinetics in Ni-Mn-Sn ferromagnetic shape memory alloys Conference Paper uri icon

abstract

  • This study examines the kinetics of the martensitic phase transformation in a representative Ni-Mn-Sn Heusler alloy. Here, we present data on isothermal and continuous cooling/warming transformations in both bulk polycrystalline and individual small particle samples. We demonstrate that while the martensite to austenite transformation proceeds very rapidly (faster than the time-scale of our observations), the austenite to martensite transformation has a significant isothermal component. A similar asymmetry is also noted in transformation behavior of individual martensite plates. We conclude that the observed time dependence is due primarily to nucleation-limited kinetics. 2010 Materials Research Society.

published proceedings

  • Materials Research Society Symposium Proceedings

author list (cited authors)

  • Shamberger, P. J., Pakhomov, A. B., & Ohuchi, F. S.

publication date

  • January 1, 2010 11:11 AM