Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/31851 |
Resumo: | Sn-34 wt%Bi, Sn-34 wt%Bi-2wt%Ag and Sn-34 wt%Bi-0.7 wt%Cu alloys have been directionally solidified (DS) under a broad range of solidification cooling rates. Microstructures have been characterized with emphasis on both eutectic growth and precipitation of Bi within the β-Sn dendritic matrix. The eutectic growth, for all alloys examined, is shown to be associated with the coexistence of coarse and fine lamellar structures with different length-scale of lamellar spacing (λ). Experimental growth relations of λ vs. the cooling rate have been proposed. The length-scale of the lamellae in the fine eutectic ranges from 0.8 to 2.5 μm while in the coarse eutectic from 1.8 to 4.0 μm. Taking as reference the Sn-Bi alloy, both the spacing between Bi precipitates (λp) and the fine eutectic spacing (λfine) increase with Cu and Ag additions, whereas λcoarse remains roughly unaltered. Both ternary Sn-Bi-Ag and Sn-Bi-Cu alloys are shown to have worse distributions of both lamellae in the fine eutectic and of precipitates within Sn-rich dendrites, which resulted in decrease in hardness |
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Silva, Bismarck LuizGarcia, AmauriSpinelli, José Eduardo2021-03-12T21:12:37Z2021-03-12T21:12:37Z2017-01-15SILVA, Bismarck Luiz; GARCIA, Amauri; SPINELLI, José Eduardo. Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys. Journal Of Alloys And Compounds, [S.L.], v. 691, p. 600-605, jan. 2017. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0925838816327372?via%3Dihub. Acesso em: 26 jan. 2021. http://dx.doi.org/10.1016/j.jallcom.2016.09.0030925-8388https://repositorio.ufrn.br/handle/123456789/3185110.1016/j.jallcom.2016.09.003ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessSn-Bi-(Ag/Cu) alloysTernary eutecticSolidificationMicrostructureEutectic spacingComplex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloysinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSn-34 wt%Bi, Sn-34 wt%Bi-2wt%Ag and Sn-34 wt%Bi-0.7 wt%Cu alloys have been directionally solidified (DS) under a broad range of solidification cooling rates. Microstructures have been characterized with emphasis on both eutectic growth and precipitation of Bi within the β-Sn dendritic matrix. The eutectic growth, for all alloys examined, is shown to be associated with the coexistence of coarse and fine lamellar structures with different length-scale of lamellar spacing (λ). Experimental growth relations of λ vs. the cooling rate have been proposed. The length-scale of the lamellae in the fine eutectic ranges from 0.8 to 2.5 μm while in the coarse eutectic from 1.8 to 4.0 μm. Taking as reference the Sn-Bi alloy, both the spacing between Bi precipitates (λp) and the fine eutectic spacing (λfine) increase with Cu and Ag additions, whereas λcoarse remains roughly unaltered. Both ternary Sn-Bi-Ag and Sn-Bi-Cu alloys are shown to have worse distributions of both lamellae in the fine eutectic and of precipitates within Sn-rich dendrites, which resulted in decrease in hardnessengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/31851/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/31851/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53ORIGINALComplexEutecticGrowth_SILVA_2017.pdfComplexEutecticGrowth_SILVA_2017.pdfapplication/pdf2134655https://repositorio.ufrn.br/bitstream/123456789/31851/1/ComplexEutecticGrowth_SILVA_2017.pdf428ec8af1578980309145b0ed767c07fMD51TEXTComplexEutecticGrowth_SILVA_2017.pdf.txtComplexEutecticGrowth_SILVA_2017.pdf.txtExtracted texttext/plain26126https://repositorio.ufrn.br/bitstream/123456789/31851/4/ComplexEutecticGrowth_SILVA_2017.pdf.txt31ed6d98a32f9b59618d20e2d807c686MD54THUMBNAILComplexEutecticGrowth_SILVA_2017.pdf.jpgComplexEutecticGrowth_SILVA_2017.pdf.jpgGenerated Thumbnailimage/jpeg1554https://repositorio.ufrn.br/bitstream/123456789/31851/5/ComplexEutecticGrowth_SILVA_2017.pdf.jpg1c4084675b357ff383c134e43632e99fMD55123456789/318512021-03-14 05:46:20.174oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-03-14T08:46:20Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
title |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
spellingShingle |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys Silva, Bismarck Luiz Sn-Bi-(Ag/Cu) alloys Ternary eutectic Solidification Microstructure Eutectic spacing |
title_short |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
title_full |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
title_fullStr |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
title_full_unstemmed |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
title_sort |
Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys |
author |
Silva, Bismarck Luiz |
author_facet |
Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo |
author_role |
author |
author2 |
Garcia, Amauri Spinelli, José Eduardo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo |
dc.subject.por.fl_str_mv |
Sn-Bi-(Ag/Cu) alloys Ternary eutectic Solidification Microstructure Eutectic spacing |
topic |
Sn-Bi-(Ag/Cu) alloys Ternary eutectic Solidification Microstructure Eutectic spacing |
description |
Sn-34 wt%Bi, Sn-34 wt%Bi-2wt%Ag and Sn-34 wt%Bi-0.7 wt%Cu alloys have been directionally solidified (DS) under a broad range of solidification cooling rates. Microstructures have been characterized with emphasis on both eutectic growth and precipitation of Bi within the β-Sn dendritic matrix. The eutectic growth, for all alloys examined, is shown to be associated with the coexistence of coarse and fine lamellar structures with different length-scale of lamellar spacing (λ). Experimental growth relations of λ vs. the cooling rate have been proposed. The length-scale of the lamellae in the fine eutectic ranges from 0.8 to 2.5 μm while in the coarse eutectic from 1.8 to 4.0 μm. Taking as reference the Sn-Bi alloy, both the spacing between Bi precipitates (λp) and the fine eutectic spacing (λfine) increase with Cu and Ag additions, whereas λcoarse remains roughly unaltered. Both ternary Sn-Bi-Ag and Sn-Bi-Cu alloys are shown to have worse distributions of both lamellae in the fine eutectic and of precipitates within Sn-rich dendrites, which resulted in decrease in hardness |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-01-15 |
dc.date.accessioned.fl_str_mv |
2021-03-12T21:12:37Z |
dc.date.available.fl_str_mv |
2021-03-12T21:12:37Z |
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 |
SILVA, Bismarck Luiz; GARCIA, Amauri; SPINELLI, José Eduardo. Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys. Journal Of Alloys And Compounds, [S.L.], v. 691, p. 600-605, jan. 2017. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0925838816327372?via%3Dihub. Acesso em: 26 jan. 2021. http://dx.doi.org/10.1016/j.jallcom.2016.09.003 |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/31851 |
dc.identifier.issn.none.fl_str_mv |
0925-8388 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.jallcom.2016.09.003 |
identifier_str_mv |
SILVA, Bismarck Luiz; GARCIA, Amauri; SPINELLI, José Eduardo. Complex eutectic growth and Bi precipitation in ternary Sn-Bi-Cu and Sn-Bi-Ag alloys. Journal Of Alloys And Compounds, [S.L.], v. 691, p. 600-605, jan. 2017. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0925838816327372?via%3Dihub. Acesso em: 26 jan. 2021. http://dx.doi.org/10.1016/j.jallcom.2016.09.003 0925-8388 10.1016/j.jallcom.2016.09.003 |
url |
https://repositorio.ufrn.br/handle/123456789/31851 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ |
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openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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