Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da FEI |
Texto Completo: | https://repositorio.fei.edu.br/handle/FEI/3418 |
Resumo: | The presence of Cu-rich nanoprecipitates in a pearlitic spheroidal graphite (ductile) cast iron alloyed with 0.82 wt%Cu was studied. The size and distribution of the precipitates were examined by transmission electron microscopy at different locations of the pearlitic matrix. Some areas were nearly free from precipitates, while other regions showed precipitates at the cementite and ferrite lamellae and at the ferrite/cementite interface. Calculation of the thermodynamic equilibrium under stable and metastable conditions using Thermo-Calc led to the identification of the conditions controlling the formation of Cu-rich nanoprecipitates along three different stages depending on the Cu concentration. Together with a differential scanning calorimetry test and elemental diffusional calculations, thermodynamic predictions supported the observation of Cu-rich precipitates despite the low concentration of Cu of the alloy investigated and allowed the authors to explain the observed heterogeneity in the distribution of precipitates as resulting from the heterogeneous distribution of Cu in the alloy caused by microsegregation during solidification. The knowledge gained is relevant for the design of strengthening strategies in SGI based on the dispersion of Cu-rich nanoprecipitates. |
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Creative Commons "Este é um artigo publicado em acesso aberto sob uma licença Creative Commons (CC BY 4.0). Fonte: https://link.springer.com/article/10.1007%2Fs40962-020-00543-x. Acesso em: 28 out. 2021.info:eu-repo/semantics/openAccessGARCÍA, LAURA N.Rodrigo MagnaboscoBOERI, ROBERTO E.TOLLEY, ALFREDO J.SAAVEDRA, MARCELA E.https://orcid.org/0000-0003-0559-72242021-10-28T18:40:05Z2021-10-28T18:40:05Z2020-11-29GARCÍA, L. N.; MAGNABOSCO, R.; BOERI, R. E.; TOLLEY, A. J.; SAAVEDRA, M. E. Formation of Cu-rich nanoprecipitates in Cu containing pearlitic SGI. International Journal of Metalcasting, v. 15, n. 4, p. 1164-1174, 2020.2163-3193https://repositorio.fei.edu.br/handle/FEI/341810.1007/s40962-020-00543-xThe presence of Cu-rich nanoprecipitates in a pearlitic spheroidal graphite (ductile) cast iron alloyed with 0.82 wt%Cu was studied. The size and distribution of the precipitates were examined by transmission electron microscopy at different locations of the pearlitic matrix. Some areas were nearly free from precipitates, while other regions showed precipitates at the cementite and ferrite lamellae and at the ferrite/cementite interface. Calculation of the thermodynamic equilibrium under stable and metastable conditions using Thermo-Calc led to the identification of the conditions controlling the formation of Cu-rich nanoprecipitates along three different stages depending on the Cu concentration. Together with a differential scanning calorimetry test and elemental diffusional calculations, thermodynamic predictions supported the observation of Cu-rich precipitates despite the low concentration of Cu of the alloy investigated and allowed the authors to explain the observed heterogeneity in the distribution of precipitates as resulting from the heterogeneous distribution of Cu in the alloy caused by microsegregation during solidification. The knowledge gained is relevant for the design of strengthening strategies in SGI based on the dispersion of Cu-rich nanoprecipitates.15411641174International Journal of Metalcastingspheroidal graphite cast ironsCu-rich nanoprecipitatesnanostructured materialsThermo-Calcmicrosegregationstransmission electron microscopyFormation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGIinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlereponame:Biblioteca Digital de Teses e Dissertações da FEIinstname:Centro Universitário da Fundação Educacional Inaciana (FEI)instacron:FEIhttps://link.springer.com/article/10.1007%2Fs40962-020-00543-xORIGINALMagnabosco_pdfMagnabosco_pdfapplication/pdf1262343https://repositorio.fei.edu.br/bitstream/FEI/3418/1/Magnabosco_pdf663254bae459b724ad2bbba489c80c97MD51TEXTMagnabosco_pdf.txtMagnabosco_pdf.txtExtracted texttext/plain35179https://repositorio.fei.edu.br/bitstream/FEI/3418/2/Magnabosco_pdf.txtceb2074d869c346df262e717c2160162MD52THUMBNAILMagnabosco_pdf.jpgMagnabosco_pdf.jpgGenerated Thumbnailimage/jpeg1728https://repositorio.fei.edu.br/bitstream/FEI/3418/3/Magnabosco_pdf.jpg5c6a908f1d88e72f5743e26a1b002d24MD53FEI/34182021-10-29 03:00:29.043Biblioteca Digital de Teses e Dissertaçõeshttp://sofia.fei.edu.br/pergamum/biblioteca/PRI |
dc.title.pt_BR.fl_str_mv |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
title |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
spellingShingle |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI GARCÍA, LAURA N. spheroidal graphite cast irons Cu-rich nanoprecipitates nanostructured materials Thermo-Calc microsegregations transmission electron microscopy |
title_short |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
title_full |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
title_fullStr |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
title_full_unstemmed |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
title_sort |
Formation of Cu-rich Nanoprecipitates in Cu Containing Pearlitic SGI |
author |
GARCÍA, LAURA N. |
author_facet |
GARCÍA, LAURA N. Rodrigo Magnabosco BOERI, ROBERTO E. TOLLEY, ALFREDO J. SAAVEDRA, MARCELA E. |
author_role |
author |
author2 |
Rodrigo Magnabosco BOERI, ROBERTO E. TOLLEY, ALFREDO J. SAAVEDRA, MARCELA E. |
author2_role |
author author author author |
dc.contributor.authorOrcid.none.fl_str_mv |
https://orcid.org/0000-0003-0559-7224 |
dc.contributor.author.fl_str_mv |
GARCÍA, LAURA N. Rodrigo Magnabosco BOERI, ROBERTO E. TOLLEY, ALFREDO J. SAAVEDRA, MARCELA E. |
dc.subject.por.fl_str_mv |
spheroidal graphite cast irons Cu-rich nanoprecipitates nanostructured materials Thermo-Calc microsegregations transmission electron microscopy |
topic |
spheroidal graphite cast irons Cu-rich nanoprecipitates nanostructured materials Thermo-Calc microsegregations transmission electron microscopy |
description |
The presence of Cu-rich nanoprecipitates in a pearlitic spheroidal graphite (ductile) cast iron alloyed with 0.82 wt%Cu was studied. The size and distribution of the precipitates were examined by transmission electron microscopy at different locations of the pearlitic matrix. Some areas were nearly free from precipitates, while other regions showed precipitates at the cementite and ferrite lamellae and at the ferrite/cementite interface. Calculation of the thermodynamic equilibrium under stable and metastable conditions using Thermo-Calc led to the identification of the conditions controlling the formation of Cu-rich nanoprecipitates along three different stages depending on the Cu concentration. Together with a differential scanning calorimetry test and elemental diffusional calculations, thermodynamic predictions supported the observation of Cu-rich precipitates despite the low concentration of Cu of the alloy investigated and allowed the authors to explain the observed heterogeneity in the distribution of precipitates as resulting from the heterogeneous distribution of Cu in the alloy caused by microsegregation during solidification. The knowledge gained is relevant for the design of strengthening strategies in SGI based on the dispersion of Cu-rich nanoprecipitates. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-11-29 |
dc.date.accessioned.fl_str_mv |
2021-10-28T18:40:05Z |
dc.date.available.fl_str_mv |
2021-10-28T18:40:05Z |
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.citation.fl_str_mv |
GARCÍA, L. N.; MAGNABOSCO, R.; BOERI, R. E.; TOLLEY, A. J.; SAAVEDRA, M. E. Formation of Cu-rich nanoprecipitates in Cu containing pearlitic SGI. International Journal of Metalcasting, v. 15, n. 4, p. 1164-1174, 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.fei.edu.br/handle/FEI/3418 |
dc.identifier.issn.none.fl_str_mv |
2163-3193 |
dc.identifier.doi.none.fl_str_mv |
10.1007/s40962-020-00543-x |
identifier_str_mv |
GARCÍA, L. N.; MAGNABOSCO, R.; BOERI, R. E.; TOLLEY, A. J.; SAAVEDRA, M. E. Formation of Cu-rich nanoprecipitates in Cu containing pearlitic SGI. International Journal of Metalcasting, v. 15, n. 4, p. 1164-1174, 2020. 2163-3193 10.1007/s40962-020-00543-x |
url |
https://repositorio.fei.edu.br/handle/FEI/3418 |
dc.relation.ispartof.none.fl_str_mv |
International Journal of Metalcasting |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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