Microstructural behavior of a pure magnesium casting with solidification temperature control.


Authors

  • Sergio Medina Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín
  • César Isaza Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín
  • Patricia Fernández-Morales Universidad Pontificia Bolivariana, Medellín
  • Emigdio Mendoza Facultad de Ingeniería Mecánica, Universidad Pontificia Bolivariana, Medellín
  • J.M. Meza Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín

DOI:

https://doi.org/10.22517/23447214.14281

Keywords:

Casting, Pure magnesium, Microstructure, Solidification.

Abstract

The study of the microstructural behavior of pure magnesium (Mg) after a casting process conducted in a furnace of own manufacture with controlled atmosphere and solidification temperature control is presented. This study aimed to determine the change in the composition of the Mg by SEM/EDS, owing to the protective atmosphere used. Besides, the change in the microstructure of Mg was studied by performing solidification in a mold at temperature of 200°C within the casting system, in which a poor oxygen atmosphere was used with a mixture of CO2 and SF6. Through the compositional evaluation was evident a change in the material owing to the gases used and the elements that interacted with the Mg. It was possible to see a change in the microstructure of the Mg by optical microscopy analysis and SEM, observing differences in the amount and distribution of particles and inclusions present in the Mg. After casting process, the generation of a dendritic structure was observed, but not in the base material. Finally, using the manufactured casting system was possible to obtain an ingot of Mg with similar conditions to the base material, in addition to obtain a microstructure with finer grain and better distribution of particles in the matrix.

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Author Biographies

Sergio Medina, Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín

Ingeniero mecánico

Patricia Fernández-Morales, Universidad Pontificia Bolivariana, Medellín

Ingeniera Metalúrgica

Emigdio Mendoza, Facultad de Ingeniería Mecánica, Universidad Pontificia Bolivariana, Medellín

Docente universitario

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Published

2017-06-30

How to Cite

Medina, S., Isaza, C., Fernández-Morales, P., Mendoza, E., & Meza, J. (2017). Microstructural behavior of a pure magnesium casting with solidification temperature control. Scientia Et Technica, 22(2), 145–149. https://doi.org/10.22517/23447214.14281

Issue

Vol. 22 No. 2 (2017)

Section

Mecánica

License

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