Cellular-to-Dendritic and Dendritic-to-Cellular Morphological Transitions in a Ternary Al-Mg-Si Alloy

Registro completo de metadados
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBrito, C.-
Autor(es): dc.creatorNguyen-Thi, H.-
Autor(es): dc.creatorMangelinck-Noël, N.-
Autor(es): dc.creatorCheung, N.-
Autor(es): dc.creatorSpinelli, J. E.-
Autor(es): dc.creatorGarcia, A.-
Data de aceite: dc.date.accessioned2021-03-11T01:33:44Z-
Data de disponibilização: dc.date.available2021-03-11T01:33:44Z-
Data de envio: dc.date.issued2019-10-06-
Data de envio: dc.date.issued2019-10-06-
Data de envio: dc.date.issued2019-06-17-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1088/1757-899X/529/1/012018-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/187804-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/187804-
Descrição: dc.descriptionThe study is focused on the influence of solidification thermal parameters upon the evolution of the microstructure (either cells or dendrites) of an Al-3wt%Mg-1wt%Si ternary alloy. It is well known that the application properties of metallic alloys will greatly depend on the final morphology of the microstructure. As a consequence, various studies have been carried out in order to determine the ranges of cooling rates associated with dendritic-cellular transitions in multicomponent alloys. In the present research work, directional solidification experiments were conducted using either a Bridgman (steady-state) device or another device that allows the solidification under transient conditions (unsteady-state). Thus, a broad range of cooling rates (), varying from 0.003K/s to 40K/s could be achieved. This led to the identification of a complete series of cellular/dendritic/cellular transitions. For low cooling rate experiments, low cooling rate cells to dendrites transition happens. Moreover, at a high cooling rate, a novel transition from dendrites to high cooling rate cells could be observed for the Al-3wt%Mg-1wt%Si alloy. Additionally, cell spacing λC and primary dendritic spacing λ1 are related to the cooling rate by power function growth laws characterized by the same exponent (-0.55) for both steady-state and unsteady-state solidification conditions.-
Idioma: dc.languageen-
Relação: dc.relationIOP Conference Series: Materials Science and Engineering-
Direitos: dc.rightsopenAccess-
Título: dc.titleCellular-to-Dendritic and Dendritic-to-Cellular Morphological Transitions in a Ternary Al-Mg-Si Alloy-
Aparece nas coleções:Repositório Institucional - Unesp

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