Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys

In this work we have focused in the study of the influence of the microstructure in metamagnetic shape memory alloys (Ni-Mn-In and Ni-Mn-Sn systems) together with the effect of Co-doping, in order to gain insight into these effects and to control and improve the properties of these materials. Starti...

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Detalles Bibliográficos
Autor: López García, Javier
Tipo de recurso: tesis doctoral
Fecha de publicación:2019
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/36477
Acceso en línea:https://hdl.handle.net/2454/36477
Access Level:acceso abierto
Palabra clave:Martensitic transformation
Metamagnetic shape memory alloys
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spelling Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloysLópez García, JavierMartensitic transformationMetamagnetic shape memory alloysIn this work we have focused in the study of the influence of the microstructure in metamagnetic shape memory alloys (Ni-Mn-In and Ni-Mn-Sn systems) together with the effect of Co-doping, in order to gain insight into these effects and to control and improve the properties of these materials. Starting with the ternary Ni-Mn-Sn system, we have stablished the correlation between microstructural parameters and magnetostructural properties in these alloys. We have characterized the different microstructural states induced by thermo-mechanical treatments and correlated them with the properties of the alloys. The cobalt-doped quaternary system, Ni-Co-Mn-Sn-Co has been the next subject of study. With the aim of obtaining further understanding of the effect of Cobalt doping the magnetic coupling, we have selected the Ni-Mn-In system as case study. Since in the systematic study of the effect of milling we have observed that long milling times lead to amorphous states, we have extended our study to the recrystallization processes in Ni-Co-Mn-Sn and Ni-Co-Mn-In alloys, with the analysis of the evolution of the different phases, the cell parameters and microstrutural parameters as grain size, micro and macrostrains.This thesis was financed by Institut Laue-Langevin (ILL).Programa de Doctorado en Ciencias y Tecnologías Industriales (RD 99/2011)Industria Zientzietako eta Teknologietako Doktoretza Programa (ED 99/2011)Recarte Callado, VicenteRodríguez Velamazán, José AlbertoCienciasZientziak2019info:eu-repo/semantics/doctoralThesisapplication/pdfhttps://hdl.handle.net/2454/36477reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/364772026-06-17T12:41:47Z
dc.title.none.fl_str_mv Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
title Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
spellingShingle Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
López García, Javier
Martensitic transformation
Metamagnetic shape memory alloys
title_short Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
title_full Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
title_fullStr Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
title_full_unstemmed Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
title_sort Influence of microstructure in the martensitic transformation and in the physical and magnetic properties in metamagnetic shape memory alloys
dc.creator.none.fl_str_mv López García, Javier
author López García, Javier
author_facet López García, Javier
author_role author
dc.contributor.none.fl_str_mv Recarte Callado, Vicente
Rodríguez Velamazán, José Alberto
Ciencias
Zientziak
dc.subject.none.fl_str_mv Martensitic transformation
Metamagnetic shape memory alloys
topic Martensitic transformation
Metamagnetic shape memory alloys
description In this work we have focused in the study of the influence of the microstructure in metamagnetic shape memory alloys (Ni-Mn-In and Ni-Mn-Sn systems) together with the effect of Co-doping, in order to gain insight into these effects and to control and improve the properties of these materials. Starting with the ternary Ni-Mn-Sn system, we have stablished the correlation between microstructural parameters and magnetostructural properties in these alloys. We have characterized the different microstructural states induced by thermo-mechanical treatments and correlated them with the properties of the alloys. The cobalt-doped quaternary system, Ni-Co-Mn-Sn-Co has been the next subject of study. With the aim of obtaining further understanding of the effect of Cobalt doping the magnetic coupling, we have selected the Ni-Mn-In system as case study. Since in the systematic study of the effect of milling we have observed that long milling times lead to amorphous states, we have extended our study to the recrystallization processes in Ni-Co-Mn-Sn and Ni-Co-Mn-In alloys, with the analysis of the evolution of the different phases, the cell parameters and microstrutural parameters as grain size, micro and macrostrains.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/36477
url https://hdl.handle.net/2454/36477
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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