Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorIFSP-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorRodrigues, Adilson V.-
Autor(es): dc.creatorKakitani, Rafael-
Autor(es): dc.creatorOliveira, Ricardo-
Autor(es): dc.creatorBarros, André-
Autor(es): dc.creatorBrito, Crystopher-
Autor(es): dc.creatorGarcia, Amauri-
Autor(es): dc.creatorCheung, Noé-
Data de aceite: dc.date.accessioned2025-08-21T21:09:55Z-
Data de disponibilização: dc.date.available2025-08-21T21:09:55Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11665-021-06525-2-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/223344-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/223344-
Descrição: dc.descriptionWith the increasing interest in developing Al-Cu-Ni alloys for use as structural material comes the need to understand more about their processing–microstructure–properties relationships. In this work, an unsteady-state directional solidification technique was used to investigate the influence of growth (v) and cooling (T˙) rates on the microstructure evolution of an Al-15Cu-5Ni alloy (wt.%) and analyze the consequent effects on hardness. The results reveal two-phase dendrites with a trefoil morphology in which the angle between the dendritic arms is around 120°. In addition, the interdendritic regions are shown to be composed of a bimodal structure including irregular block-type (Al7Cu4Ni) and lamellar-type (α-Al + Al2Cu) IMCs. A mechanism is proposed to describe the microstructure formation and evolution as well as experimental equations to represent the growth of dendritic arm spacings in terms of v and T˙. Finally, it is discussed why Al7Cu4Ni and Al2Cu IMCs are shown to have more impact on hardness of the studied alloy than the length scale of two-phase dendrites.-
Descrição: dc.descriptionDepartment of Manufacturing and Materials Engineering University of Campinas UNICAMP, SP-
Descrição: dc.descriptionFederal Institute of Education Science and Technology of São Paulo IFSP, SP-
Descrição: dc.descriptionSão Paulo State University UNESP Campus of São João da Boa Vista, SP-
Descrição: dc.descriptionSão Paulo State University UNESP Campus of São João da Boa Vista, SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Materials Engineering and Performance-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAl-Cu-Ni alloys-
Palavras-chave: dc.subjecthardness-
Palavras-chave: dc.subjectmicrostructure-
Palavras-chave: dc.subjectsolidification-
Título: dc.titleTwo-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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