Influence of defects on the irreversible phase transition in the Fe-Pd doped with Co and Mn

The appearance of BCT martensite in Fe-Pd-based ferromagnetic shape memory alloys, which develops at lower temperatures than the thermoelastic martensitic transition, deteriorates the shape memory properties. In a previous work performed in Fe70Pd30, it was shown that a reduction in defects density reduces the non thermoelastic FCT-BCT transformation temperature. In the present work, the influence of quenched-in-defects upon the intensity and temperature of the thermoelastic martensitic (FCC-FCT) and the non thermoelastic (FCT-BCT) transitions in Fe-Pd doped with Co and Mn is studied. Differential scanning calorimetric and mechanical spectroscopy studies demonstrate that a reduction in the dislocation density the stability range of the FCC-FCT reversible transformation in Fe67Pd30Co3 and Fe66.8Pd30.7Mn2.5 ferromagnetic shape memory alloys.

Palabras clave: Fe-Pd-Co , Fe-Pd-Mn , FERROMAGNETIC SHAPE MEMORY ALLOYS , MARTENSITIC TRANSFORMATION , DISLOCATION DYNAMICS

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)

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URI: http://hdl.handle.net/11336/101137

URL: http://ref.scielo.org/twpj39

DOI: https://doi.org/10.1590/s1517-707620180002.0368

Colecciones

Articulos(CCT - ROSARIO)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - ROSARIO

Citación

Bonifacich, Federico Guillermo; Lambri, Osvaldo Agustin F.; Gargicevich, Damian; Zelada, Griselda Irene; Pérez Landazábal, J. I.; et al.; Influence of defects on the irreversible phase transition in the Fe-Pd doped with Co and Mn; Universidade Federal do Rio de Janeiro; Matéria; 23; 2; 7-2018; 1-11

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