Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die

Detalhes bibliográficos
Autor(a) principal: Zhilyaev,Alexander P.
Data de Publicação: 2013
Outros Autores: Langdon,Terence G.
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=S1516-14392013000300005
Resumo: Equal-channel angular pressing (ECAP) is widely recognized as an effective method for processing ultrafine-grained and even nanostructured materials. Important details on processes occurring in the die intersections can be obtained by mapping the microhardness and EBSD microstructures in partially-pressed aluminum and copper through the 90º die of ECAP. Precise measurements were made using grids of partially-pressed Al and Cu and detailed color maps were plotted and compared with EBSD maps. A narrow region along the bisector of two channels reflects altering in microhardness level of the material subjected to simple shear. The microstructural evolution suggests significant refining of the grain structure but there is noticeable inhomogeneity in the microhardness and microstructure for both materials. Factors contributing to the inhomogeneous hardness distribution include the coarse initial grain size, and inhomogeneous deformation across the plane of the die channel intersection due to die wall friction and the formation of a dead zone at the outer corner.
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spelling Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP dieequal channel angular pressingmicrostructureEBSDaluminiumcopperEqual-channel angular pressing (ECAP) is widely recognized as an effective method for processing ultrafine-grained and even nanostructured materials. Important details on processes occurring in the die intersections can be obtained by mapping the microhardness and EBSD microstructures in partially-pressed aluminum and copper through the 90º die of ECAP. Precise measurements were made using grids of partially-pressed Al and Cu and detailed color maps were plotted and compared with EBSD maps. A narrow region along the bisector of two channels reflects altering in microhardness level of the material subjected to simple shear. The microstructural evolution suggests significant refining of the grain structure but there is noticeable inhomogeneity in the microhardness and microstructure for both materials. Factors contributing to the inhomogeneous hardness distribution include the coarse initial grain size, and inhomogeneous deformation across the plane of the die channel intersection due to die wall friction and the formation of a dead zone at the outer corner.ABM, ABC, ABPol2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000300005Materials Research v.16 n.3 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000037info:eu-repo/semantics/openAccessZhilyaev,Alexander P.Langdon,Terence G.eng2013-06-04T00:00:00Zoai:scielo:S1516-14392013000300005Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-06-04T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
title Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
spellingShingle Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
Zhilyaev,Alexander P.
equal channel angular pressing
microstructure
EBSD
aluminium
copper
title_short Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
title_full Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
title_fullStr Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
title_full_unstemmed Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
title_sort Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die
author Zhilyaev,Alexander P.
author_facet Zhilyaev,Alexander P.
Langdon,Terence G.
author_role author
author2 Langdon,Terence G.
author2_role author
dc.contributor.author.fl_str_mv Zhilyaev,Alexander P.
Langdon,Terence G.
dc.subject.por.fl_str_mv equal channel angular pressing
microstructure
EBSD
aluminium
copper
topic equal channel angular pressing
microstructure
EBSD
aluminium
copper
description Equal-channel angular pressing (ECAP) is widely recognized as an effective method for processing ultrafine-grained and even nanostructured materials. Important details on processes occurring in the die intersections can be obtained by mapping the microhardness and EBSD microstructures in partially-pressed aluminum and copper through the 90º die of ECAP. Precise measurements were made using grids of partially-pressed Al and Cu and detailed color maps were plotted and compared with EBSD maps. A narrow region along the bisector of two channels reflects altering in microhardness level of the material subjected to simple shear. The microstructural evolution suggests significant refining of the grain structure but there is noticeable inhomogeneity in the microhardness and microstructure for both materials. Factors contributing to the inhomogeneous hardness distribution include the coarse initial grain size, and inhomogeneous deformation across the plane of the die channel intersection due to die wall friction and the formation of a dead zone at the outer corner.
publishDate 2013
dc.date.none.fl_str_mv 2013-06-01
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=S1516-14392013000300005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000300005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392013005000037
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.16 n.3 2013
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_ 1754212662859792384

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