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A SIMS and TEM investigation of the microstructure of wear-resistant ductile cast iron

Valle, Nathalie and Martinez Celis, Mayerling and Lacaze, Jacques and Thorbjornsson, Ingólfur Örn and Johannesson, Birgir and Thorgrimsson, Jon Thor A SIMS and TEM investigation of the microstructure of wear-resistant ductile cast iron. (2012) Surface and Interface Analysis, 45 (1). 441-444. ISSN 0142-2421

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Official URL: http://dx.doi.org/10.1002/sia.5119


The benefit of the presence of Cr containing inserts inside ductile iron on the tribological properties of these materials has been recently demonstrated. In order to understand these improved properties, a secondary ion mass spectrometry (SIMS) and transmission electron microscopy investigation of these wear-resistant ductile cast irons has been performed. The results indicate that the principal change in the microstructure induced by inserts occurs in the inserts and in their surroundings where the formation of carbides with different sizes and compositions is observed: M3C, M7C3 and M23C6 (M stands for Fe and/or Cr). These are not pure binary carbides since among the different elements studied by SIMS, Cr, Fe, Mn and, to a lesser extent, Ni are soluble in these carbides.

Item Type:Article
HAL Id:hal-03468623
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Centre de Recherche Public - CRP Gabriel Lippmann (LUXEMBOURG)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Innovation Center Iceland (ICELAND)
Other partners > Malmsteypa Thorgrims Jonssonar (ICELAND)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:09 Sep 2013 10:14

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