Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing

Detalhes bibliográficos
Autor(a) principal: Bernardi,Heide Heloise
Data de Publicação: 2017
Outros Autores: Sandim,Hugo Ricardo Zschommler, Zilnyk,Kahl Dick, Verlinden,Bert, Raabe,Dierk
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501238
Resumo: A [211]-oriented niobium single crystal was deformed by equal channel angular pressing (ECAP) at room temperature using the route Bc to a total strain of 9.2. A sharp cube texture develops after ECAP processing. The deformed samples were annealed in vacuum from 400ºC (673 K) to 900ºC (1173 K) for 1 h to evaluate their microstructural stability. Scanning electron microscopy (SEM) was used to image the microstructures of as-deformed and annealed specimens. Electron backscatter diffraction (EBSD) was employed to determine the respective microtextures before and after annealing. Coarsening of the microstructure occurs at a maximum rate at 550ºC (823 K) due to discontinuous recrystallization. Normal grain growth replaces discontinuous recrystallization as the main coarsening mechanism above 700ºC (973 K).
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spelling Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular PressingNiobiumrecrystallizationgrain growthECAPEBSDA [211]-oriented niobium single crystal was deformed by equal channel angular pressing (ECAP) at room temperature using the route Bc to a total strain of 9.2. A sharp cube texture develops after ECAP processing. The deformed samples were annealed in vacuum from 400ºC (673 K) to 900ºC (1173 K) for 1 h to evaluate their microstructural stability. Scanning electron microscopy (SEM) was used to image the microstructures of as-deformed and annealed specimens. Electron backscatter diffraction (EBSD) was employed to determine the respective microtextures before and after annealing. Coarsening of the microstructure occurs at a maximum rate at 550ºC (823 K) due to discontinuous recrystallization. Normal grain growth replaces discontinuous recrystallization as the main coarsening mechanism above 700ºC (973 K).ABM, ABC, ABPol2017-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501238Materials Research v.20 n.5 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2017-0288info:eu-repo/semantics/openAccessBernardi,Heide HeloiseSandim,Hugo Ricardo ZschommlerZilnyk,Kahl DickVerlinden,BertRaabe,Dierkeng2017-10-06T00:00:00Zoai:scielo:S1516-14392017000501238Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-10-06T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
title Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
spellingShingle Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
Bernardi,Heide Heloise
Niobium
recrystallization
grain growth
ECAP
EBSD
title_short Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
title_full Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
title_fullStr Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
title_full_unstemmed Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
title_sort Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing
author Bernardi,Heide Heloise
author_facet Bernardi,Heide Heloise
Sandim,Hugo Ricardo Zschommler
Zilnyk,Kahl Dick
Verlinden,Bert
Raabe,Dierk
author_role author
author2 Sandim,Hugo Ricardo Zschommler
Zilnyk,Kahl Dick
Verlinden,Bert
Raabe,Dierk
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bernardi,Heide Heloise
Sandim,Hugo Ricardo Zschommler
Zilnyk,Kahl Dick
Verlinden,Bert
Raabe,Dierk
dc.subject.por.fl_str_mv Niobium
recrystallization
grain growth
ECAP
EBSD
topic Niobium
recrystallization
grain growth
ECAP
EBSD
description A [211]-oriented niobium single crystal was deformed by equal channel angular pressing (ECAP) at room temperature using the route Bc to a total strain of 9.2. A sharp cube texture develops after ECAP processing. The deformed samples were annealed in vacuum from 400ºC (673 K) to 900ºC (1173 K) for 1 h to evaluate their microstructural stability. Scanning electron microscopy (SEM) was used to image the microstructures of as-deformed and annealed specimens. Electron backscatter diffraction (EBSD) was employed to determine the respective microtextures before and after annealing. Coarsening of the microstructure occurs at a maximum rate at 550ºC (823 K) due to discontinuous recrystallization. Normal grain growth replaces discontinuous recrystallization as the main coarsening mechanism above 700ºC (973 K).
publishDate 2017
dc.date.none.fl_str_mv 2017-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501238
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501238
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2017-0288
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.20 n.5 2017
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212671112085504

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