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Reversible and irreversible martensitic transformations in Fe-Pd and Fe-Pd-Co alloys
|Vicente Sanchez-Alarcos 1, Vicente Recarte 1, José Ignacio Pérez-Landazábal 1, Cristina Gomez-Polo 1, Volodymyr A. Chernenko 2, Miguel A. Gonzalez 3,4
1. Universidad Pública de Navarra (UPNA), Campus Arrosadia, Pamplona 31006, Spain
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 and has associated the shape memory effect. On further cooling an irreversible FCT to BCT transformation occurs that destroys the memory effect. Nevertheless, the transformation from reversible to irreversible phase is not complete since a volume fraction of the alloy is retained in the reversible phase even if the sample has been cool down well below the irreversible limit.
Presentation: Poster at E-MRS Fall Meeting 2007, Symposium E, by Vicente Recarte
See On-line Journal of E-MRS Fall Meeting 2007
Submitted: 2007-05-14 12:33 Revised: 2009-06-07 00:44