Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/S1003-6326(21)65559-0 http://hdl.handle.net/11449/206299 |
Resumo: | Biodegradable Zn-based alloys, particularly Zn−Mg alloys with the addition of alloying elements, have been intensively investigated aiming to improve both mechanical properties and corrosion behavior. Since such properties are strongly dependent on the alloy microstructure, any evaluation should commence on understanding the conditions influencing its formation. In this study, the effect of the solidification cooling rate on the microstructural evolution of Zn−1wt.%Mg−(0.5wt.%Ca, 0.5wt.%Mn) alloys during transient solidification was investigated. The results show that the microstructures of both alloys have three phases in common: η-Zn dendritic matrix, intermetallic compounds (IMCs) Zn11Mg2, and Zn2Mg in the eutectic mixture. MnZn9 and two Ca-bearing phases (CaZn11 and CaZn13) are associated with Mn and Ca additions, respectively. These additions are shown to refine the dendritic matrix and the eutectic mixture as compared to the Zn−1wt.%Mg alloy. A correlation between cooling rate, dendritic or eutectic spacings was developed, thus permitting experimental growth laws to be proposed. Additionally, hardness tests were performed to evaluate the effects of additions of Ca and Mn. Experimental correlations between Vickers microhardness and secondary dendritic spacings were proposed, showing that the microstructural refinement and characteristic Ca and Mn based IMCs induce an increase in hardness as compared to the binary alloy. |
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Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling ratecooling ratemicrohardnessmicrostructuresolidificationZn−Mg−(Ca, Mn) alloysBiodegradable Zn-based alloys, particularly Zn−Mg alloys with the addition of alloying elements, have been intensively investigated aiming to improve both mechanical properties and corrosion behavior. Since such properties are strongly dependent on the alloy microstructure, any evaluation should commence on understanding the conditions influencing its formation. In this study, the effect of the solidification cooling rate on the microstructural evolution of Zn−1wt.%Mg−(0.5wt.%Ca, 0.5wt.%Mn) alloys during transient solidification was investigated. The results show that the microstructures of both alloys have three phases in common: η-Zn dendritic matrix, intermetallic compounds (IMCs) Zn11Mg2, and Zn2Mg in the eutectic mixture. MnZn9 and two Ca-bearing phases (CaZn11 and CaZn13) are associated with Mn and Ca additions, respectively. These additions are shown to refine the dendritic matrix and the eutectic mixture as compared to the Zn−1wt.%Mg alloy. A correlation between cooling rate, dendritic or eutectic spacings was developed, thus permitting experimental growth laws to be proposed. Additionally, hardness tests were performed to evaluate the effects of additions of Ca and Mn. Experimental correlations between Vickers microhardness and secondary dendritic spacings were proposed, showing that the microstructural refinement and characteristic Ca and Mn based IMCs induce an increase in hardness as compared to the binary alloy.Department of Manufacturing and Materials Engineering University of Campinas-UNICAMPCampus of São João da Boa Vista São Paulo State University-UNESP, São João da Boa VistaCampus of São João da Boa Vista São Paulo State University-UNESP, São João da Boa VistaUniversidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (Unesp)VIDA, Talita A.SILVA, Cássio A.P.LIMA, Thiago S.CHEUNG, NoéBRITO, Crystopher [UNESP]GARCIA, Amauri2021-06-25T10:29:48Z2021-06-25T10:29:48Z2021-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1031-1048http://dx.doi.org/10.1016/S1003-6326(21)65559-0Transactions of Nonferrous Metals Society of China (English Edition), v. 31, n. 4, p. 1031-1048, 2021.2210-33841003-6326http://hdl.handle.net/11449/20629910.1016/S1003-6326(21)65559-02-s2.0-85105280246Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTransactions of Nonferrous Metals Society of China (English Edition)info:eu-repo/semantics/openAccess2021-10-23T03:04:05Zoai:repositorio.unesp.br:11449/206299Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T03:04:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
title |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
spellingShingle |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate VIDA, Talita A. cooling rate microhardness microstructure solidification Zn−Mg−(Ca, Mn) alloys |
title_short |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
title_full |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
title_fullStr |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
title_full_unstemmed |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
title_sort |
Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate |
author |
VIDA, Talita A. |
author_facet |
VIDA, Talita A. SILVA, Cássio A.P. LIMA, Thiago S. CHEUNG, Noé BRITO, Crystopher [UNESP] GARCIA, Amauri |
author_role |
author |
author2 |
SILVA, Cássio A.P. LIMA, Thiago S. CHEUNG, Noé BRITO, Crystopher [UNESP] GARCIA, Amauri |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
VIDA, Talita A. SILVA, Cássio A.P. LIMA, Thiago S. CHEUNG, Noé BRITO, Crystopher [UNESP] GARCIA, Amauri |
dc.subject.por.fl_str_mv |
cooling rate microhardness microstructure solidification Zn−Mg−(Ca, Mn) alloys |
topic |
cooling rate microhardness microstructure solidification Zn−Mg−(Ca, Mn) alloys |
description |
Biodegradable Zn-based alloys, particularly Zn−Mg alloys with the addition of alloying elements, have been intensively investigated aiming to improve both mechanical properties and corrosion behavior. Since such properties are strongly dependent on the alloy microstructure, any evaluation should commence on understanding the conditions influencing its formation. In this study, the effect of the solidification cooling rate on the microstructural evolution of Zn−1wt.%Mg−(0.5wt.%Ca, 0.5wt.%Mn) alloys during transient solidification was investigated. The results show that the microstructures of both alloys have three phases in common: η-Zn dendritic matrix, intermetallic compounds (IMCs) Zn11Mg2, and Zn2Mg in the eutectic mixture. MnZn9 and two Ca-bearing phases (CaZn11 and CaZn13) are associated with Mn and Ca additions, respectively. These additions are shown to refine the dendritic matrix and the eutectic mixture as compared to the Zn−1wt.%Mg alloy. A correlation between cooling rate, dendritic or eutectic spacings was developed, thus permitting experimental growth laws to be proposed. Additionally, hardness tests were performed to evaluate the effects of additions of Ca and Mn. Experimental correlations between Vickers microhardness and secondary dendritic spacings were proposed, showing that the microstructural refinement and characteristic Ca and Mn based IMCs induce an increase in hardness as compared to the binary alloy. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:29:48Z 2021-06-25T10:29:48Z 2021-04-01 |
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://dx.doi.org/10.1016/S1003-6326(21)65559-0 Transactions of Nonferrous Metals Society of China (English Edition), v. 31, n. 4, p. 1031-1048, 2021. 2210-3384 1003-6326 http://hdl.handle.net/11449/206299 10.1016/S1003-6326(21)65559-0 2-s2.0-85105280246 |
url |
http://dx.doi.org/10.1016/S1003-6326(21)65559-0 http://hdl.handle.net/11449/206299 |
identifier_str_mv |
Transactions of Nonferrous Metals Society of China (English Edition), v. 31, n. 4, p. 1031-1048, 2021. 2210-3384 1003-6326 10.1016/S1003-6326(21)65559-0 2-s2.0-85105280246 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Transactions of Nonferrous Metals Society of China (English Edition) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1031-1048 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965461210726400 |