Metallurgical and Materials Transactions A

, Volume 41, Issue 9, pp 2366–2376 | Cite as

Corrosion Mechanisms of Steel and Cast Iron by Molten Aluminum

  • David Balloy
  • Jean-Charles Tissier
  • Marie-Laurence Giorgi
  • Marc Briant


The corrosion mechanisms by liquid aluminum of three industrial materials have been studied: unalloyed steel (UAS), and ferritic and modified pearlitic cast irons (FCI and PCI, respectively). The behavior of these materials when in contact with liquid aluminum is different. Aluminum diffuses deep into the UAS and forms intermetallic compounds with iron at the surface and in the steel matrix. At the surface, only Fe2Al5 and FeAl3 are found. In the matrix, FeAl2 also is formed in agreement with the equilibrium Fe-Al diagram. From the matrix to FeAl2, the Al content in the ferrite increases progressively until Al saturation is reached. At this step, black elongated precipitates (Al4C3 and/or graphite) appear. Graphite lamellas present in both FCI and PCI constitute an efficient barrier to the Al diffusion. The high silicon content of the FCI leads to the formation of a phase free from Al and saturated in Si. For the PCI, a thin layer rich in Al and Si, which is formed between the matrix and Fe2Al5, limits the diffusion of atoms. The effects of Cr and P added in the PCI also are discussed.


Ferrite Cast Iron Pearlite Energy Dispersive Spectrometer Intermetallic Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We are grateful to Fonderie de la Scarpe (Arras, France) and to OSEO-ANVAR Nord-Pas-de-Calais (France) for the financial support of this study. Thanks to Thibaut Brière, Yann Grosskost, Jérôme Sadoun, François Xavier Lachaussée, François Lesaffre, Bruno Haubreux, and Arnaud Delhaye for their contribution to this work.


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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2010

Authors and Affiliations

  • David Balloy
    • 1
  • Jean-Charles Tissier
    • 1
  • Marie-Laurence Giorgi
    • 2
  • Marc Briant
    • 3
  1. 1.Univ Lille Nord de FranceVilleneuve d’AscqFrance
  2. 2.Laboratoire de Génie des Procédés et des MatériauxÉcole Centrale ParisParisFrance
  3. 3.Commissariat a l’Energie AtomiqueGif-sur-YvetteFrance

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