Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys

Al-Mg-Fe alloys are appointed as favorable ones with respect to the costs and all the required properties for successful vessel service. However, the experimental inter-relations of solidification thermal parameters, microstructure, and mechanical strength are still undetermined. In the present rese...

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Principais autores:	Gomes, Leonardo Fernandes, Silva, Bismarck Luiz, Garcia, Amauri, Spinelli, José Eduardo
Formato:	article
Idioma:	English
Publicado em:	Springer
Assuntos:	Cool Rate Intermetallic Particle Directionally Solidify Dendritic Spacing Permanent Mold Casting
Endereço do item:	https://repositorio.ufrn.br/handle/123456789/31835
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spelling	ri-123456789-318352021-03-14T08:46:15Z Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys Gomes, Leonardo Fernandes Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo Cool Rate Intermetallic Particle Directionally Solidify Dendritic Spacing Permanent Mold Casting Al-Mg-Fe alloys are appointed as favorable ones with respect to the costs and all the required properties for successful vessel service. However, the experimental inter-relations of solidification thermal parameters, microstructure, and mechanical strength are still undetermined. In the present research work, the dependences of tensile properties on the length scale of the dendritic morphology of ternary Al-1.2 wt pct Mg-1.5 wt pct Fe and Al-7 wt pct Mg-1.5 wt pct Fe alloys are examined. Transient heat flow conditions during solidification have been achieved by the use of a directional solidification system, thus permitting a comprehensive characterization of the dendritic microstructures to be performed. Thermo-Calc computations, X-ray diffraction, and scanning electron microscopy analyses are carried out to give support to the extensive microstructural evaluation performed with both ternary Al-Mg-Fe alloys. Experimental growth relations of primary, λ 1, and secondary, λ 2, dendrite arm spacings with cooling rate (T˙L) and of tensile properties with λ 2 are proposed. For both alloys examined, Hall–Petch type formulas show that the tensile strength increases with the decrease in λ 2. The soundest strength–ductility balance is exhibited by the Al-7 wt pct Mg-1.5 wt pct Fe alloy specimen with refined microstructure. This is shown to be due to a more homogeneous distribution of intermetallic particles in connection with solid solution strengthening propitiated by Mg. Functional experimental inter-relations of tensile properties with growth (V L) and cooling rates (T˙L) for both ternary Al-Mg-Fe alloys have also been derived 2021-03-12T15:03:27Z 2021-03-12T15:03:27Z 2017-02-08 article GOMES, Leonardo F.; SILVA, Bismarck L.; GARCIA, Amauri; SPINELLI, José E.. Dendritic Growth, Solidification Thermal Parameters, and Mg Content Affecting the Tensile Properties of Al-Mg-1.5 Wt Pct Fe Alloys. Metallurgical And Materials Transactions A, [S.L.], v. 48, n. 4, p. 1841-1855, 8 fev. 2017. Disponível em: https://link.springer.com/article/10.1007%2Fs11661-017-3978-0. Acesso em: 26 jan. 2021. http://dx.doi.org/10.1007/s11661-017-3978-0. 1073-5623 1543-1940 https://repositorio.ufrn.br/handle/123456789/31835 10.1007/s11661-017-3978-0. en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Springer
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Cool Rate Intermetallic Particle Directionally Solidify Dendritic Spacing Permanent Mold Casting
spellingShingle	Cool Rate Intermetallic Particle Directionally Solidify Dendritic Spacing Permanent Mold Casting Gomes, Leonardo Fernandes Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
description	Al-Mg-Fe alloys are appointed as favorable ones with respect to the costs and all the required properties for successful vessel service. However, the experimental inter-relations of solidification thermal parameters, microstructure, and mechanical strength are still undetermined. In the present research work, the dependences of tensile properties on the length scale of the dendritic morphology of ternary Al-1.2 wt pct Mg-1.5 wt pct Fe and Al-7 wt pct Mg-1.5 wt pct Fe alloys are examined. Transient heat flow conditions during solidification have been achieved by the use of a directional solidification system, thus permitting a comprehensive characterization of the dendritic microstructures to be performed. Thermo-Calc computations, X-ray diffraction, and scanning electron microscopy analyses are carried out to give support to the extensive microstructural evaluation performed with both ternary Al-Mg-Fe alloys. Experimental growth relations of primary, λ 1, and secondary, λ 2, dendrite arm spacings with cooling rate (T˙L) and of tensile properties with λ 2 are proposed. For both alloys examined, Hall–Petch type formulas show that the tensile strength increases with the decrease in λ 2. The soundest strength–ductility balance is exhibited by the Al-7 wt pct Mg-1.5 wt pct Fe alloy specimen with refined microstructure. This is shown to be due to a more homogeneous distribution of intermetallic particles in connection with solid solution strengthening propitiated by Mg. Functional experimental inter-relations of tensile properties with growth (V L) and cooling rates (T˙L) for both ternary Al-Mg-Fe alloys have also been derived
format	article
author	Gomes, Leonardo Fernandes Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo
author_facet	Gomes, Leonardo Fernandes Silva, Bismarck Luiz Garcia, Amauri Spinelli, José Eduardo
author_sort	Gomes, Leonardo Fernandes
title	Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
title_short	Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
title_full	Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
title_fullStr	Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
title_full_unstemmed	Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys
title_sort	dendritic growth, solidification thermal parameters, and mg content affecting the tensile properties of al-mg-1.5 wt pct fe alloys
publisher	Springer
publishDate	2021
url	https://repositorio.ufrn.br/handle/123456789/31835
work_keys_str_mv	AT gomesleonardofernandes dendriticgrowthsolidificationthermalparametersandmgcontentaffectingthetensilepropertiesofalmg15wtpctfealloys AT silvabismarckluiz dendriticgrowthsolidificationthermalparametersandmgcontentaffectingthetensilepropertiesofalmg15wtpctfealloys AT garciaamauri dendriticgrowthsolidificationthermalparametersandmgcontentaffectingthetensilepropertiesofalmg15wtpctfealloys AT spinellijoseeduardo dendriticgrowthsolidificationthermalparametersandmgcontentaffectingthetensilepropertiesofalmg15wtpctfealloys
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Dendritic growth, solidification thermal parameters, and Mg content affecting the tensile properties of Al-Mg-1.5 Wt Pct Fe alloys

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