Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Dendritic Spacing and Macrosegregation Affecting Microhardness of an Al-Si-Mg Alloy Solidified Under Unsteady State Conditions

Full text
Author(s):
Cássio da Silva [1] ; Thiago Soares [2] ; Noé Cheung [3] ; Amauri Garcia [4] ; Danieli A. P. Reis [5] ; Crystopher Brito [6]
Total Authors: 6
Affiliation:
[1] Universidade Federal de São Paulo. Departamento de Ciência e Tecnologia - Brasil
[2] Universidade Estadual de Campinas. Departamento de Engenharia de Manufatura e Materiais - Brasil
[3] Universidade Estadual de Campinas. Departamento de Engenharia de Manufatura e Materiais - Brasil
[4] Universidade Estadual de Campinas. Departamento de Engenharia de Manufatura e Materiais - Brasil
[5] Universidade Federal de São Paulo. Departamento de Ciência e Tecnologia - Brasil
[6] Universidade do Estado de São Paulo - Brasil
Total Affiliations: 6
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 22, 2020-03-06.
Abstract

The prediction of microstructure morphology is fundamental for the manufacture of metallic components, since the expected levels of mechanical properties will be associated with the final aspects of the microstructure. In this work, an Al-7wt.%Si-3wt.%Mg alloy was directionally solidified in unsteady state conditions in order to investigate the influence of the addition of 3wt.%Mg to an Al-7wt.%Si alloy on the solidification evolution. The microstructure of the examined alloy is shown to be characterized by a more complex arrangement of phases, as compared to that of the Al-7wt.%Si alloy, which includes the binary (α-Al+Mg2Si) and refined ternary (α-Al+Si+Mg2Si+Fe-rich IMC) eutectic mixtures. A higher Vickers hardness profile is shown to be associated with a more refined microstructural arrangement. However, for cooling rates lower than 2K/s the microhardness is shown to increase with the increase in the microstructural spacing, which is shown to occur caused by Si macrosegregation and higher content of free Mg. (AU)

FAPESP's process: 14/25809-0 - Thermal and microstructural parameters in the transient solidification of Al-Mg and Al-Mg-Si alloys and correlation with mechanical and corrosion resistances
Grantee:Crystopher Cardoso de Brito
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 13/23396-7 - Effects of solidification MicrostructureParameters of Aluminum-based multicomponent alloys (Al-Mg-Si; Al-Sn-Cu; Al-Zn-Mg) on the resistances to Corrosionand tribocorrosion degradation
Grantee:Amauri Garcia
Support Opportunities: Regular Research Grants
FAPESP's process: 12/08494-0 - Thermal and Microstructural Parameters in the Transient Solidification of Al-Mg and Al-Mg-Si Alloys and Correlation with Mechanical and Corrosion Resistances
Grantee:Crystopher Cardoso de Brito
Support Opportunities: Scholarships in Brazil - Doctorate