Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy

Detalhes bibliográficos
Autor(a) principal: Freitas Rodrigues, Patrícia
Data de Publicação: 2021
Outros Autores: Reshie, Hatim, Sousa, Talita Gama de, Paula, Andersan dos Santos, Braz Fernandes, Francisco Manuel, Basu, Ritwik
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/128271
Resumo: PTDC/CTM-CTM/29101/2017 – POCI-01-0145-FEDER-029101 UIDB/EMS/00285/2020 UIDB/50025/2020-2023 CAPES (APQ-1 2009/02 E-26/110.414/2010 APQ-1 2011-2 E-26/110.269.2012 E-26/111.435/2012 307798/2015-1
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spelling Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloyElectron back-scattered diffractionShape memory alloysSynchrotron radiation X-ray diffractionThermomechanical processCeramics and CompositesBiomaterialsSurfaces, Coatings and FilmsMetals and AlloysPTDC/CTM-CTM/29101/2017 – POCI-01-0145-FEDER-029101 UIDB/EMS/00285/2020 UIDB/50025/2020-2023 CAPES (APQ-1 2009/02 E-26/110.414/2010 APQ-1 2011-2 E-26/110.269.2012 E-26/111.435/2012 307798/2015-1A detailed microstructural analysis during the intermediate stages of fabrication of NiTi orthodontic archwire is carried out in this study. These microstructural findings were related to the phase transformation characteristics such as start and finish transformation temperature, thermal hysteresis, etc. The objective was to monitor the transformation window during the different stages of thermomechanical processing. The casted alloy was further subjected to combinations of hot and cold forging steps with intermediate annealing. Four different sample conditions were prepared. The microstructure development in these samples was studied through electron back-scattered diffraction and synchrotron radiation X-ray diffraction (SR-XRD) techniques. The phase transformation temperatures were determined by differential scanning calorimetric measurements. The microstructures showed grain boundary serrations, very large grains of austenite, twin-like features within austenite grains and mixed-phase distribution of austenite and martensite. The differences in microstructures were also clear in terms of local in-grain misorientation and grain boundary fractions. SR-XRD measurements further revealed possible precipitation of Ni4Ti3 and Ni3Ti. The martensite start temperature (Ms) was seen to be a clear function of high angle grain boundary fraction, while the finish temperature (Mf) showed an inverse trend. The transformation interval, Ms–Mf is related to the stored energy of austenite grains that determines the driving force to overcome the frictional work opposing the movement of the habit plane, while and Af –As largely depends on the elastic energy stored of the martensite plates during its growth. The hysteresis during reverse transformation (M → A) was related to the local in-grain misorientation.DCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNFreitas Rodrigues, PatríciaReshie, HatimSousa, Talita Gama dePaula, Andersan dos SantosBraz Fernandes, Francisco ManuelBasu, Ritwik2021-11-25T23:42:41Z2021-11-012021-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article11application/pdfhttp://hdl.handle.net/10362/128271eng2238-7854PURE: 34842728https://doi.org/10.1016/j.jmrt.2021.10.008info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:07:56Zoai:run.unl.pt:10362/128271Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:46:16.801801Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
title Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
spellingShingle Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
Freitas Rodrigues, Patrícia
Electron back-scattered diffraction
Shape memory alloys
Synchrotron radiation X-ray diffraction
Thermomechanical process
Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys
title_short Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
title_full Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
title_fullStr Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
title_full_unstemmed Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
title_sort Controlling the phase transformation window during stages of hot/cold forging of Ni-rich Ni–Ti alloy
author Freitas Rodrigues, Patrícia
author_facet Freitas Rodrigues, Patrícia
Reshie, Hatim
Sousa, Talita Gama de
Paula, Andersan dos Santos
Braz Fernandes, Francisco Manuel
Basu, Ritwik
author_role author
author2 Reshie, Hatim
Sousa, Talita Gama de
Paula, Andersan dos Santos
Braz Fernandes, Francisco Manuel
Basu, Ritwik
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DCM - Departamento de Ciência dos Materiais
CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
RUN
dc.contributor.author.fl_str_mv Freitas Rodrigues, Patrícia
Reshie, Hatim
Sousa, Talita Gama de
Paula, Andersan dos Santos
Braz Fernandes, Francisco Manuel
Basu, Ritwik
dc.subject.por.fl_str_mv Electron back-scattered diffraction
Shape memory alloys
Synchrotron radiation X-ray diffraction
Thermomechanical process
Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys
topic Electron back-scattered diffraction
Shape memory alloys
Synchrotron radiation X-ray diffraction
Thermomechanical process
Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys
description PTDC/CTM-CTM/29101/2017 – POCI-01-0145-FEDER-029101 UIDB/EMS/00285/2020 UIDB/50025/2020-2023 CAPES (APQ-1 2009/02 E-26/110.414/2010 APQ-1 2011-2 E-26/110.269.2012 E-26/111.435/2012 307798/2015-1
publishDate 2021
dc.date.none.fl_str_mv 2021-11-25T23:42:41Z
2021-11-01
2021-11-01T00:00:00Z
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://hdl.handle.net/10362/128271
url http://hdl.handle.net/10362/128271
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2238-7854
PURE: 34842728
https://doi.org/10.1016/j.jmrt.2021.10.008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11
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dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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