Strain path change effect on dislocation microstructure of multicrystalline copper sheets
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4226 https://doi.org/10.1016/j.matchemphys.2006.01.038 |
Resumo: | In this study, coarse-grained copper sheets were subjected to tension-rolling and rolling-tension strain path sequences. In both cases, two different types of strain path change were studied: the tensile and rolling directions were parallel and normal to each other. TEM observations of deformed samples showed the typical dislocation structures for the prestraining paths in tension and rolling. Special microband features, not observed during prestrain, were found during the second strain path, whatever the sequence and type of strain path change. The microstructure observed during reloading is discussed in terms of the sequence and type of strain path change, parallel or normal. The frequency of appearance of microbands is discussed in terms of the activity of new slip systems, i.e. not active during the prestrain path and connected with the number of the active slip systems after reloading. The results from this study, obtained for coarse-grained multicrystalline copper sheets, are compared with previous ones for fine and medium-grained copper. |
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Strain path change effect on dislocation microstructure of multicrystalline copper sheetsMechanical testingElectron microscopyMicrostructureIn this study, coarse-grained copper sheets were subjected to tension-rolling and rolling-tension strain path sequences. In both cases, two different types of strain path change were studied: the tensile and rolling directions were parallel and normal to each other. TEM observations of deformed samples showed the typical dislocation structures for the prestraining paths in tension and rolling. Special microband features, not observed during prestrain, were found during the second strain path, whatever the sequence and type of strain path change. The microstructure observed during reloading is discussed in terms of the sequence and type of strain path change, parallel or normal. The frequency of appearance of microbands is discussed in terms of the activity of new slip systems, i.e. not active during the prestrain path and connected with the number of the active slip systems after reloading. The results from this study, obtained for coarse-grained multicrystalline copper sheets, are compared with previous ones for fine and medium-grained copper.http://www.sciencedirect.com/science/article/B6TX4-4JCSJV2-4/1/ab2200b34036ad6e07a87cccc392eb1e2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4226http://hdl.handle.net/10316/4226https://doi.org/10.1016/j.matchemphys.2006.01.038engMaterials Chemistry and Physics. 98:1 (2006) 44-50Sakharova, N. A.Fernandes, J. V.info: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:RCAAP2020-11-06T16:49:14Zoai:estudogeral.uc.pt:10316/4226Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:32.093675Repositório 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 |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
title |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
spellingShingle |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets Sakharova, N. A. Mechanical testing Electron microscopy Microstructure |
title_short |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
title_full |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
title_fullStr |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
title_full_unstemmed |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
title_sort |
Strain path change effect on dislocation microstructure of multicrystalline copper sheets |
author |
Sakharova, N. A. |
author_facet |
Sakharova, N. A. Fernandes, J. V. |
author_role |
author |
author2 |
Fernandes, J. V. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Sakharova, N. A. Fernandes, J. V. |
dc.subject.por.fl_str_mv |
Mechanical testing Electron microscopy Microstructure |
topic |
Mechanical testing Electron microscopy Microstructure |
description |
In this study, coarse-grained copper sheets were subjected to tension-rolling and rolling-tension strain path sequences. In both cases, two different types of strain path change were studied: the tensile and rolling directions were parallel and normal to each other. TEM observations of deformed samples showed the typical dislocation structures for the prestraining paths in tension and rolling. Special microband features, not observed during prestrain, were found during the second strain path, whatever the sequence and type of strain path change. The microstructure observed during reloading is discussed in terms of the sequence and type of strain path change, parallel or normal. The frequency of appearance of microbands is discussed in terms of the activity of new slip systems, i.e. not active during the prestrain path and connected with the number of the active slip systems after reloading. The results from this study, obtained for coarse-grained multicrystalline copper sheets, are compared with previous ones for fine and medium-grained copper. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 |
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/10316/4226 http://hdl.handle.net/10316/4226 https://doi.org/10.1016/j.matchemphys.2006.01.038 |
url |
http://hdl.handle.net/10316/4226 https://doi.org/10.1016/j.matchemphys.2006.01.038 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Chemistry and Physics. 98:1 (2006) 44-50 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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