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Effect of oxide films on formation of Fe-rich intermetallic phases in aluminum alloys

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Abstract

The aim of the present work was to study the effect of the α-Al2O3 and MgAl2O4 oxide films, normally found in cast aluminum alloys, on formation of Fe-rich intermetallic phases. In order to investigate the role of these oxide films, experiments were carried out upon conditions in which formed in situ oxide films by natural oxidation were present. Results in this research agreed well with previous reports suggesting that Fe-rich intermetallic phases nucleate upon the oxide films. This is based on some Fe-rich intermetallic phases that are clearly related to oxide films within the microstructure. The intermetallic phases formed on oxide films were identified with the help of techniques such as SEM/EDS and X-ray diffraction.

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Acknowledgements

The authors are thanked to the National Council for Science and Technology of Mexico (Conacyt) for the financial support provided to carry out this work (Project No. 149030).

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Authors and Affiliations

  1. Academic Unit of Engineering, Autonomous University of Zacatecas, Lopez Velarde Av. 801, 98060, Zacatecas, Mexico

    P. Orozco & S. Maldonado

  2. Faculty of Engineering, Autonomous University of Coahuila, Saltillo, Coahuila, Mexico

    R. Muñiz, F. Equihua, S. Luna, J. Ortiz, A. García & L. Castruita

  3. COMIMSA, Mexican Corporation for Materials Research, Ciencia y Tecnología Street 790, 25290, Saltillo, Coahuila, Mexico

    A. Hernández

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  1. P. Orozco
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  2. S. Maldonado
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  4. F. Equihua
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  5. S. Luna
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  6. J. Ortiz
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Correspondence to P. Orozco.

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Orozco, P., Maldonado, S., Muñiz, R. et al. Effect of oxide films on formation of Fe-rich intermetallic phases in aluminum alloys. J Therm Anal Calorim 131, 2329–2335 (2018). https://doi.org/10.1007/s10973-017-6765-7

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  • DOI: https://doi.org/10.1007/s10973-017-6765-7

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