Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi

Autores
Torra, Vicenç; Martorell, F.; Sun, Q. P.; Ahadi, A.; Lovey, Francisco Carlos; Sade Lichtmann, Marcos Leonel
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The transformation and retransformation paths realized at constant stress in wires of NiTi SMAs show a horizontal or “flat” behavior in the hysteretic cycle. After sinusoidal cycling at 0.01 Hz (i.e., training) with a maximal strain of 8 %, the thicker wires of NiTi SMAs, with a diameter of 2.46 mm, have the stress–strain cycles with one S-shaped behavior. A “similar” change appears by varying the grain sizes in the samples, i.e., from 80 to 20 nm. Furthermore, the local measurements of temperature suggest that cycling induces changes in the transformation mechanisms associated with the evolution from horizontal to S shape. For instance, the associated energy evolves from localized transformation to homogeneous heat production in S-shaped cycles. Thermodynamic analysis establishes a link between heat capacity and the slopes of the coexistence curve in f–x or in σ–ε via the (∂ε/∂σ)coex. The flat cycles were coherent with the classical latent heat, i.e., dissipation at constant stress. In the S-shaped cycles, the heat during the phase change seems redistributed as heat capacity against progressive stress. Preliminary direct measurements are coherent with the evolution of the (∂ε/∂σ)coex against strain.
Fil: Torra, Vicenç. Personal Research Group; España
Fil: Martorell, F.. Personal Research Group; España
Fil: Sun, Q. P.. Hong Kong University of Science and Technology; República de China
Fil: Ahadi, A.. Tsukuba University. National Institute For Materials Science; Japón. Wuhan University; China
Fil: Lovey, Francisco Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina
Fil: Sade Lichtmann, Marcos Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina
Materia
Grain Size
Heat Capacity
Latent Heat
Martensitic Transformation
Niti
S-Shaped Cycles
Sma
Thinner And Thick Wires
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:11336/79042
Acceder
id CONICETDig_b4ed33e90ee172e395ab3e9e33e67805
oai_identifier_str oai:ri.conicet.gov.ar:11336/79042
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTiTorra, VicençMartorell, F.Sun, Q. P.Ahadi, A.Lovey, Francisco CarlosSade Lichtmann, Marcos LeonelGrain SizeHeat CapacityLatent HeatMartensitic TransformationNitiS-Shaped CyclesSmaThinner And Thick Wireshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The transformation and retransformation paths realized at constant stress in wires of NiTi SMAs show a horizontal or “flat” behavior in the hysteretic cycle. After sinusoidal cycling at 0.01 Hz (i.e., training) with a maximal strain of 8 %, the thicker wires of NiTi SMAs, with a diameter of 2.46 mm, have the stress–strain cycles with one S-shaped behavior. A “similar” change appears by varying the grain sizes in the samples, i.e., from 80 to 20 nm. Furthermore, the local measurements of temperature suggest that cycling induces changes in the transformation mechanisms associated with the evolution from horizontal to S shape. For instance, the associated energy evolves from localized transformation to homogeneous heat production in S-shaped cycles. Thermodynamic analysis establishes a link between heat capacity and the slopes of the coexistence curve in f–x or in σ–ε via the (∂ε/∂σ)coex. The flat cycles were coherent with the classical latent heat, i.e., dissipation at constant stress. In the S-shaped cycles, the heat during the phase change seems redistributed as heat capacity against progressive stress. Preliminary direct measurements are coherent with the evolution of the (∂ε/∂σ)coex against strain.Fil: Torra, Vicenç. Personal Research Group; EspañaFil: Martorell, F.. Personal Research Group; EspañaFil: Sun, Q. P.. Hong Kong University of Science and Technology; República de ChinaFil: Ahadi, A.. Tsukuba University. National Institute For Materials Science; Japón. Wuhan University; ChinaFil: Lovey, Francisco Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; ArgentinaFil: Sade Lichtmann, Marcos Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; ArgentinaSpringer2017-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/79042Torra, Vicenç; Martorell, F.; Sun, Q. P.; Ahadi, A.; Lovey, Francisco Carlos; et al.; Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi; Springer; Journal of Thermal Analysis and Calorimetry; 128; 1; 1-4-2017; 259-2701388-6150CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10973-016-5886-8info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10973-016-5886-8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:47:57Zoai:ri.conicet.gov.ar:11336/79042instacron: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 09:47:57.458CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
title Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
spellingShingle Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
Torra, Vicenç
Grain Size
Heat Capacity
Latent Heat
Martensitic Transformation
Niti
S-Shaped Cycles
Sma
Thinner And Thick Wires
title_short Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
title_full Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
title_fullStr Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
title_full_unstemmed Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
title_sort Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi
dc.creator.none.fl_str_mv Torra, Vicenç
Martorell, F.
Sun, Q. P.
Ahadi, A.
Lovey, Francisco Carlos
Sade Lichtmann, Marcos Leonel
author Torra, Vicenç
author_facet Torra, Vicenç
Martorell, F.
Sun, Q. P.
Ahadi, A.
Lovey, Francisco Carlos
Sade Lichtmann, Marcos Leonel
author_role author
author2 Martorell, F.
Sun, Q. P.
Ahadi, A.
Lovey, Francisco Carlos
Sade Lichtmann, Marcos Leonel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Grain Size
Heat Capacity
Latent Heat
Martensitic Transformation
Niti
S-Shaped Cycles
Sma
Thinner And Thick Wires
topic Grain Size
Heat Capacity
Latent Heat
Martensitic Transformation
Niti
S-Shaped Cycles
Sma
Thinner And Thick Wires
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The transformation and retransformation paths realized at constant stress in wires of NiTi SMAs show a horizontal or “flat” behavior in the hysteretic cycle. After sinusoidal cycling at 0.01 Hz (i.e., training) with a maximal strain of 8 %, the thicker wires of NiTi SMAs, with a diameter of 2.46 mm, have the stress–strain cycles with one S-shaped behavior. A “similar” change appears by varying the grain sizes in the samples, i.e., from 80 to 20 nm. Furthermore, the local measurements of temperature suggest that cycling induces changes in the transformation mechanisms associated with the evolution from horizontal to S shape. For instance, the associated energy evolves from localized transformation to homogeneous heat production in S-shaped cycles. Thermodynamic analysis establishes a link between heat capacity and the slopes of the coexistence curve in f–x or in σ–ε via the (∂ε/∂σ)coex. The flat cycles were coherent with the classical latent heat, i.e., dissipation at constant stress. In the S-shaped cycles, the heat during the phase change seems redistributed as heat capacity against progressive stress. Preliminary direct measurements are coherent with the evolution of the (∂ε/∂σ)coex against strain.
Fil: Torra, Vicenç. Personal Research Group; España
Fil: Martorell, F.. Personal Research Group; España
Fil: Sun, Q. P.. Hong Kong University of Science and Technology; República de China
Fil: Ahadi, A.. Tsukuba University. National Institute For Materials Science; Japón. Wuhan University; China
Fil: Lovey, Francisco Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina
Fil: Sade Lichtmann, Marcos Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina
description The transformation and retransformation paths realized at constant stress in wires of NiTi SMAs show a horizontal or “flat” behavior in the hysteretic cycle. After sinusoidal cycling at 0.01 Hz (i.e., training) with a maximal strain of 8 %, the thicker wires of NiTi SMAs, with a diameter of 2.46 mm, have the stress–strain cycles with one S-shaped behavior. A “similar” change appears by varying the grain sizes in the samples, i.e., from 80 to 20 nm. Furthermore, the local measurements of temperature suggest that cycling induces changes in the transformation mechanisms associated with the evolution from horizontal to S shape. For instance, the associated energy evolves from localized transformation to homogeneous heat production in S-shaped cycles. Thermodynamic analysis establishes a link between heat capacity and the slopes of the coexistence curve in f–x or in σ–ε via the (∂ε/∂σ)coex. The flat cycles were coherent with the classical latent heat, i.e., dissipation at constant stress. In the S-shaped cycles, the heat during the phase change seems redistributed as heat capacity against progressive stress. Preliminary direct measurements are coherent with the evolution of the (∂ε/∂σ)coex against strain.
publishDate 2017
dc.date.none.fl_str_mv 2017-04-01
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/11336/79042
Torra, Vicenç; Martorell, F.; Sun, Q. P.; Ahadi, A.; Lovey, Francisco Carlos; et al.; Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi; Springer; Journal of Thermal Analysis and Calorimetry; 128; 1; 1-4-2017; 259-270
1388-6150
CONICET Digital
CONICET
url http://hdl.handle.net/11336/79042
identifier_str_mv Torra, Vicenç; Martorell, F.; Sun, Q. P.; Ahadi, A.; Lovey, Francisco Carlos; et al.; Metastable effects on martensitic transformation in SMAs: Part X. An approach to thermodynamic changes induced for the S-shaped cycles in thick wires of NiTi; Springer; Journal of Thermal Analysis and Calorimetry; 128; 1; 1-4-2017; 259-270
1388-6150
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10973-016-5886-8
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10973-016-5886-8
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 Springer
publisher.none.fl_str_mv Springer
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
_version_ 1842268893009149952
score 13.13397

Publicaciones similares