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Article Dans Une Revue Surface and Interface Analysis Année : 2012

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

Résumé

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.
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hal-03468623 , version 1 (07-12-2021)

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Nathalie Valle, Mayerling Martinez Celis, Jacques Lacaze, Ingólfur Örn Thorbjornsson, Birgir Johannesson, et al.. A SIMS and TEM investigation of the microstructure of wear-resistant ductile cast iron. Surface and Interface Analysis, 2012, 45 (1), pp.441-444. ⟨10.1002/sia.5119⟩. ⟨hal-03468623⟩
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