Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments

Autores
Pelegrina, Jorge Luis; Yawny, Alejandro Andres; Olbricht, J.; Eggeler, G.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Martensitic phase transformations were studied in ultrafine grained Ni-rich pseudoelastic NiTi wires during cyclic deformation under small imposed strain amplitudes. Small strain variation tests were complemented by a thermographic analysis of the emerging temperature distributions in the specimens. The characteristics of the observed thermal profiles result from the specific phase transitions which take place at different stress levels. Homogeneous temperature changes, corresponding to a non-localized transformation activity along the specimen length, were observed throughout the whole range of applied stresses, starting from values as low as 100 MPa. This behavior is in line with previous literature reports for the stress-induced transformation from B2 austenite to R-phase as long as the critical stress for B19′ martensite formation is not reached. In the present study, similar type of transformation activity could also be demonstrated at higher strains/stresses, even after the stress induced transformation to B19′ was apparently completed. These findings suggest that transformation activity involving the B2 phase is present throughout the whole pseudoelastic stress-strain cycle; i.e., it is not restricted to the initial loading portion. Finally, non-localized transformation to or from B19′ was identified during small amplitude strain variations in the plateau-like coexistence ranges of the pseudoelastic cycle.
Fil: Pelegrina, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Yawny, Alejandro Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Olbricht, J.. Ruhr University Bochum; Alemania
Fil: Eggeler, G.. Ruhr University Bochum; Alemania
Materia
Niti Shape-Memory Alloys
Pseudoelasticity
R-Phase
Stress-Induced Phase Transformations
Thermal Analysis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/50243
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/50243
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experimentsPelegrina, Jorge LuisYawny, Alejandro AndresOlbricht, J.Eggeler, G.Niti Shape-Memory AlloysPseudoelasticityR-PhaseStress-Induced Phase TransformationsThermal Analysishttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Martensitic phase transformations were studied in ultrafine grained Ni-rich pseudoelastic NiTi wires during cyclic deformation under small imposed strain amplitudes. Small strain variation tests were complemented by a thermographic analysis of the emerging temperature distributions in the specimens. The characteristics of the observed thermal profiles result from the specific phase transitions which take place at different stress levels. Homogeneous temperature changes, corresponding to a non-localized transformation activity along the specimen length, were observed throughout the whole range of applied stresses, starting from values as low as 100 MPa. This behavior is in line with previous literature reports for the stress-induced transformation from B2 austenite to R-phase as long as the critical stress for B19′ martensite formation is not reached. In the present study, similar type of transformation activity could also be demonstrated at higher strains/stresses, even after the stress induced transformation to B19′ was apparently completed. These findings suggest that transformation activity involving the B2 phase is present throughout the whole pseudoelastic stress-strain cycle; i.e., it is not restricted to the initial loading portion. Finally, non-localized transformation to or from B19′ was identified during small amplitude strain variations in the plateau-like coexistence ranges of the pseudoelastic cycle.Fil: Pelegrina, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Yawny, Alejandro Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Olbricht, J.. Ruhr University Bochum; AlemaniaFil: Eggeler, G.. Ruhr University Bochum; AlemaniaElsevier Science Sa2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50243Pelegrina, Jorge Luis; Yawny, Alejandro Andres; Olbricht, J.; Eggeler, G.; Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments; Elsevier Science Sa; Journal of Alloys and Compounds; 651; 12-2015; 655-6650925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2015.08.159info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838815308550info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:23Zoai:ri.conicet.gov.ar:11336/50243instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:23.274CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
title Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
spellingShingle Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
Pelegrina, Jorge Luis
Niti Shape-Memory Alloys
Pseudoelasticity
R-Phase
Stress-Induced Phase Transformations
Thermal Analysis
title_short Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
title_full Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
title_fullStr Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
title_full_unstemmed Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
title_sort Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments
dc.creator.none.fl_str_mv Pelegrina, Jorge Luis
Yawny, Alejandro Andres
Olbricht, J.
Eggeler, G.
author Pelegrina, Jorge Luis
author_facet Pelegrina, Jorge Luis
Yawny, Alejandro Andres
Olbricht, J.
Eggeler, G.
author_role author
author2 Yawny, Alejandro Andres
Olbricht, J.
Eggeler, G.
author2_role author
author
author
dc.subject.none.fl_str_mv Niti Shape-Memory Alloys
Pseudoelasticity
R-Phase
Stress-Induced Phase Transformations
Thermal Analysis
topic Niti Shape-Memory Alloys
Pseudoelasticity
R-Phase
Stress-Induced Phase Transformations
Thermal Analysis
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Martensitic phase transformations were studied in ultrafine grained Ni-rich pseudoelastic NiTi wires during cyclic deformation under small imposed strain amplitudes. Small strain variation tests were complemented by a thermographic analysis of the emerging temperature distributions in the specimens. The characteristics of the observed thermal profiles result from the specific phase transitions which take place at different stress levels. Homogeneous temperature changes, corresponding to a non-localized transformation activity along the specimen length, were observed throughout the whole range of applied stresses, starting from values as low as 100 MPa. This behavior is in line with previous literature reports for the stress-induced transformation from B2 austenite to R-phase as long as the critical stress for B19′ martensite formation is not reached. In the present study, similar type of transformation activity could also be demonstrated at higher strains/stresses, even after the stress induced transformation to B19′ was apparently completed. These findings suggest that transformation activity involving the B2 phase is present throughout the whole pseudoelastic stress-strain cycle; i.e., it is not restricted to the initial loading portion. Finally, non-localized transformation to or from B19′ was identified during small amplitude strain variations in the plateau-like coexistence ranges of the pseudoelastic cycle.
Fil: Pelegrina, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Yawny, Alejandro Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Olbricht, J.. Ruhr University Bochum; Alemania
Fil: Eggeler, G.. Ruhr University Bochum; Alemania
description Martensitic phase transformations were studied in ultrafine grained Ni-rich pseudoelastic NiTi wires during cyclic deformation under small imposed strain amplitudes. Small strain variation tests were complemented by a thermographic analysis of the emerging temperature distributions in the specimens. The characteristics of the observed thermal profiles result from the specific phase transitions which take place at different stress levels. Homogeneous temperature changes, corresponding to a non-localized transformation activity along the specimen length, were observed throughout the whole range of applied stresses, starting from values as low as 100 MPa. This behavior is in line with previous literature reports for the stress-induced transformation from B2 austenite to R-phase as long as the critical stress for B19′ martensite formation is not reached. In the present study, similar type of transformation activity could also be demonstrated at higher strains/stresses, even after the stress induced transformation to B19′ was apparently completed. These findings suggest that transformation activity involving the B2 phase is present throughout the whole pseudoelastic stress-strain cycle; i.e., it is not restricted to the initial loading portion. Finally, non-localized transformation to or from B19′ was identified during small amplitude strain variations in the plateau-like coexistence ranges of the pseudoelastic cycle.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/50243
Pelegrina, Jorge Luis; Yawny, Alejandro Andres; Olbricht, J.; Eggeler, G.; Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments; Elsevier Science Sa; Journal of Alloys and Compounds; 651; 12-2015; 655-665
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/50243
identifier_str_mv Pelegrina, Jorge Luis; Yawny, Alejandro Andres; Olbricht, J.; Eggeler, G.; Transformation activity in ultrafine grained pseudoelastic NiTi wires during small amplitude loading/unloading experiments; Elsevier Science Sa; Journal of Alloys and Compounds; 651; 12-2015; 655-665
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2015.08.159
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838815308550
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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