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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Proceedings Of The International Conference On Martensitic Transformations, Icomat-08 Título del capítulo: Influence of Fe-addition on Ni-Mn-Ga ferromagnetic shape-memory alloys
Autores UNAM: DAVID RIOS JARA;
Autores externos: Idioma: Año de publicación: 2009Palabras clave:
Atomic species; Calorimetric measurements; Enthalpy change; Fe-addition; Ferromagnetic shape-memory alloys; Intermediate phasis; Magnetic shape-memory alloy; Martensitic transitions; Ni-Mn-Ga; Quaternary systems; Structural and magnetic properties; Transition temperature; Cerium alloys; Ferromagnetic materials; Gallium; Gallium alloys; Iron alloys; Magnetic properties; Magnetism; Manganese compounds; Martensite; Martensitic transformations; Phase stability; Shape memory effect; Temperature; Manganese
Resumen:
The effect of Fe-addition on the structural and magnetic properties of Ni-Mn-Ga has been studied by substituting systematically each atomic species by Fe. Transition temperatures (structural and magnetic) and martensitic transition entropy and enthalpy changes have been obtained from magnetic and calorimetric measurements. From these results the influence of Fe-addition on the relative phase stability of the martensitic and intermediate phases has been analyzed. Deviations from the reported scaling of transition temperatures with e/a for Ni-Mn-Ga are obtained in the studied quaternary system.
