Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jmrt.2022.04.096 http://hdl.handle.net/11449/242134 |
Resumo: | Ultrasonic velocity and attenuation measurements of a commercially available Ni-rich polycrystalline Ni-Ti alloy were simultaneously obtained upon cooling from room temperature (RT) down to 130 K. The anelastic spectra show multiple anomalies in both velocity and attenuation curves, which evidence a complex nature of structural rearrangements exhibited by Ni-Ti alloy, associated with relaxations and phase transformations. In particular, some evident anomalies at 285 and 180 K, not previously exploited using ultrasonic measurements on Ni-rich polycrystalline Ni-Ti alloy, were associated with austenite to pre-martensitic (B2 → R) and pre-martensitic to martensitic (R → B19') phase transitions, respectively. The peculiar temperature separation between these transformations was interpreted based on chemical composition and the Ni-Ti alloy microstructure evolution. X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) were also used to add complementary results about phase transformations and thermal events exhibited by Ni-Ti alloy at low temperatures. XRD, Rietveld refinement, SEM and transmission electron microscopy (TEM) analyses confirm the coexistence of the austenite B2, martensite B19', and Ni4Ti3 phases at RT. DSC measurements indicated reversible two-stage martensitic transitions involving B2 → R → B19' phase transformations at similar temperatures than the observed from ultrasonic anomalies. Besides that, several anelastic relaxation events identified around the phase transitions reveal the occurrence of complex physical mechanisms, such as accommodation of the twinned R-phase and martensite domain walls, twinning boundaries mobility, and the coupling between stress-induced dislocation motion and interstitial diffusion, not reported simultaneously in the literature. The ferroelastic nature of martensite and pre-martensite phase transformations was confirmed for a commercially available Ni-rich polycrystalline Ni-Ti alloy studied in this work. |
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Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloysCryogenic temperatureMartensitic transformationsNi-Ti alloyThermal propertiesUltrasonic characterizationUltrasonic velocity and attenuation measurements of a commercially available Ni-rich polycrystalline Ni-Ti alloy were simultaneously obtained upon cooling from room temperature (RT) down to 130 K. The anelastic spectra show multiple anomalies in both velocity and attenuation curves, which evidence a complex nature of structural rearrangements exhibited by Ni-Ti alloy, associated with relaxations and phase transformations. In particular, some evident anomalies at 285 and 180 K, not previously exploited using ultrasonic measurements on Ni-rich polycrystalline Ni-Ti alloy, were associated with austenite to pre-martensitic (B2 → R) and pre-martensitic to martensitic (R → B19') phase transitions, respectively. The peculiar temperature separation between these transformations was interpreted based on chemical composition and the Ni-Ti alloy microstructure evolution. X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) were also used to add complementary results about phase transformations and thermal events exhibited by Ni-Ti alloy at low temperatures. XRD, Rietveld refinement, SEM and transmission electron microscopy (TEM) analyses confirm the coexistence of the austenite B2, martensite B19', and Ni4Ti3 phases at RT. DSC measurements indicated reversible two-stage martensitic transitions involving B2 → R → B19' phase transformations at similar temperatures than the observed from ultrasonic anomalies. Besides that, several anelastic relaxation events identified around the phase transitions reveal the occurrence of complex physical mechanisms, such as accommodation of the twinned R-phase and martensite domain walls, twinning boundaries mobility, and the coupling between stress-induced dislocation motion and interstitial diffusion, not reported simultaneously in the literature. The ferroelastic nature of martensite and pre-martensite phase transformations was confirmed for a commercially available Ni-rich polycrystalline Ni-Ti alloy studied in this work.Laboratorio de Acústica Ultrasonora Instituto de Fisica Facultad de Ciencias, UdelaR. IguáDepartment of Physics Federal University of São Carlos (UFSCar), SPIFSP - Federal Institute of Education Science and Technology Grupo de Pesquisa em Materiais Metálicos Avançados, SPGraduate Program in Materials Science and Engineering (PPG-CEM) Federal University of São Carlos (UFSCar), SPDepartment of Materials Engineering (DEMa) Federal University of São Carlos (UFSCar), SPLaboratório de Anelasticidade e Biomateriais UNESP - Universidade Estadual Paulista, SPIBTN/BR - Brazilian Branch Institute of Biomaterials Tribocorrosion and Nanomedicine, SPLaboratório de Anelasticidade e Biomateriais UNESP - Universidade Estadual Paulista, SPFacultad de CienciasUniversidade Federal de São Carlos (UFSCar)Grupo de Pesquisa em Materiais Metálicos AvançadosUniversidade Estadual Paulista (UNESP)Tribocorrosion and NanomedicineMoreno-Gobbi, ArielSilva, Paulo SergioNespeque Correa, Diego RafaelMilá, Alfredo MasóMuñoz Chaves, Javier AndrésGrandini, Carlos Roberto [UNESP]Macedo Dos Santos, Rafael FormentonMoreira Afonso, Conrado Ramos2023-03-02T09:49:00Z2023-03-02T09:49:00Z2022-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4990-5004http://dx.doi.org/10.1016/j.jmrt.2022.04.096Journal of Materials Research and Technology, v. 18, p. 4990-5004.2238-7854http://hdl.handle.net/11449/24213410.1016/j.jmrt.2022.04.0962-s2.0-85135756769Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Materials Research and Technologyinfo:eu-repo/semantics/openAccess2024-04-25T17:40:00Zoai:repositorio.unesp.br:11449/242134Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-25T17:40Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
title |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
spellingShingle |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys Moreno-Gobbi, Ariel Cryogenic temperature Martensitic transformations Ni-Ti alloy Thermal properties Ultrasonic characterization |
title_short |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
title_full |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
title_fullStr |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
title_full_unstemmed |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
title_sort |
Experimental assessment of low-temperature martensite transformations in Ni-rich polycrystalline Ni-Ti alloys |
author |
Moreno-Gobbi, Ariel |
author_facet |
Moreno-Gobbi, Ariel Silva, Paulo Sergio Nespeque Correa, Diego Rafael Milá, Alfredo Masó Muñoz Chaves, Javier Andrés Grandini, Carlos Roberto [UNESP] Macedo Dos Santos, Rafael Formenton Moreira Afonso, Conrado Ramos |
author_role |
author |
author2 |
Silva, Paulo Sergio Nespeque Correa, Diego Rafael Milá, Alfredo Masó Muñoz Chaves, Javier Andrés Grandini, Carlos Roberto [UNESP] Macedo Dos Santos, Rafael Formenton Moreira Afonso, Conrado Ramos |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Facultad de Ciencias Universidade Federal de São Carlos (UFSCar) Grupo de Pesquisa em Materiais Metálicos Avançados Universidade Estadual Paulista (UNESP) Tribocorrosion and Nanomedicine |
dc.contributor.author.fl_str_mv |
Moreno-Gobbi, Ariel Silva, Paulo Sergio Nespeque Correa, Diego Rafael Milá, Alfredo Masó Muñoz Chaves, Javier Andrés Grandini, Carlos Roberto [UNESP] Macedo Dos Santos, Rafael Formenton Moreira Afonso, Conrado Ramos |
dc.subject.por.fl_str_mv |
Cryogenic temperature Martensitic transformations Ni-Ti alloy Thermal properties Ultrasonic characterization |
topic |
Cryogenic temperature Martensitic transformations Ni-Ti alloy Thermal properties Ultrasonic characterization |
description |
Ultrasonic velocity and attenuation measurements of a commercially available Ni-rich polycrystalline Ni-Ti alloy were simultaneously obtained upon cooling from room temperature (RT) down to 130 K. The anelastic spectra show multiple anomalies in both velocity and attenuation curves, which evidence a complex nature of structural rearrangements exhibited by Ni-Ti alloy, associated with relaxations and phase transformations. In particular, some evident anomalies at 285 and 180 K, not previously exploited using ultrasonic measurements on Ni-rich polycrystalline Ni-Ti alloy, were associated with austenite to pre-martensitic (B2 → R) and pre-martensitic to martensitic (R → B19') phase transitions, respectively. The peculiar temperature separation between these transformations was interpreted based on chemical composition and the Ni-Ti alloy microstructure evolution. X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) were also used to add complementary results about phase transformations and thermal events exhibited by Ni-Ti alloy at low temperatures. XRD, Rietveld refinement, SEM and transmission electron microscopy (TEM) analyses confirm the coexistence of the austenite B2, martensite B19', and Ni4Ti3 phases at RT. DSC measurements indicated reversible two-stage martensitic transitions involving B2 → R → B19' phase transformations at similar temperatures than the observed from ultrasonic anomalies. Besides that, several anelastic relaxation events identified around the phase transitions reveal the occurrence of complex physical mechanisms, such as accommodation of the twinned R-phase and martensite domain walls, twinning boundaries mobility, and the coupling between stress-induced dislocation motion and interstitial diffusion, not reported simultaneously in the literature. The ferroelastic nature of martensite and pre-martensite phase transformations was confirmed for a commercially available Ni-rich polycrystalline Ni-Ti alloy studied in this work. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05-01 2023-03-02T09:49:00Z 2023-03-02T09:49:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jmrt.2022.04.096 Journal of Materials Research and Technology, v. 18, p. 4990-5004. 2238-7854 http://hdl.handle.net/11449/242134 10.1016/j.jmrt.2022.04.096 2-s2.0-85135756769 |
url |
http://dx.doi.org/10.1016/j.jmrt.2022.04.096 http://hdl.handle.net/11449/242134 |
identifier_str_mv |
Journal of Materials Research and Technology, v. 18, p. 4990-5004. 2238-7854 10.1016/j.jmrt.2022.04.096 2-s2.0-85135756769 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Materials Research and Technology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4990-5004 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803649900832882688 |