Reversible and irreversible martensitic transformations in Fe-Pd and Fe-Pd-Co alloys

  • V. Sánchez-Alarcos
  • V. Recarte
  • J. I. Pérez-Landazábal
  • C. Gómez-Polo
  • V. A. Chernenko
  • M. A. González


Ferromagnetic Fe-Pd shape memory alloys (SMA) undergo a martensitic phase transformation during cooling from a parent FCC phase to a tetragonal FCT martensite. This transformation is thermoelastic and reversible giving rise to the shape memory effect. On further cooling an irreversible FCT to BCT transformation occurs that makes impossible the memory effect. Nevertheless, the transformation from reversible to irreversible phase has been not complete since a volume fraction of reversible phase in the alloy is retained even after cooling below the temperature of appearance of the irreversible phase. The addition of Co lowers the temperature of the reversible and irreversible phase transformations but also reduces the amount of transformed irreversible martensite after cooling to 10 K.


Martensite Shape Memory Alloy Transformation Temperature European Physical Journal Special Topic Ferromagnetic Shape Memory Alloy 
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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • V. Sánchez-Alarcos
    • 1
  • V. Recarte
    • 1
  • J. I. Pérez-Landazábal
    • 1
  • C. Gómez-Polo
    • 1
  • V. A. Chernenko
    • 2
  • M. A. González
    • 3
    • 4
  1. 1.Universidad Pública de Navarra (UPNA)PamplonaSpain
  2. 2.Institute of MagnetismKievUkraine
  3. 3.Institut Laue Langevin (ILL)GrenobleFrance
  4. 4.Instituto de Ciencias de Materiales de Aragón (ICMA), CSIC-Universidad de ZaragozaZaragozaSpain

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