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Nucleation of Fe-Rich Intermetallic Phases on α-Al2O3 Oxide Films in Al-Si Alloys

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ABSTRACT
Nucleation of Fe-rich intermetallic phases on α-Al2O3 oxide films were analyzed in five experimental Al-Fe-Mn-Si alloys. In an attempt to verify the role of α-Al2O3 films in nucleating Fe-rich intermetallics, experiments have been conducted under conditions where formed in situ oxide films were present. Some Fe-rich intermetallics are observed to be related with the oxide films in the microstructure, the present results are in accordance with some research that suggest that the Fe-rich intermetallic phases nucleate upon the oxide films. The intermetallic phases and α-Al2O3 films were unambiguously identified with the help of complementary techniques such as thermal analysis, SEM/EDS and X-ray diffraction.
 
Cite this paper
Orozco-González, P. , Castro-Román, M. , Maldonado-Ruíz, S. , Haro-Rodríguez, S. , Equihua-Guillén, F. , Muñiz-Valdez, R. , Luna-Álvarez, S. , Montoya-Dávila, M. and Hernández-Rodríguez, A. (2015) Nucleation of Fe-Rich Intermetallic Phases on α-Al2O3 Oxide Films in Al-Si Alloys. Journal of Minerals and Materials Characterization and Engineering, 3, 15-25. doi: 10.4236/jmmce.2015.31003.
 
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