Abstract
This work evaluates the effect of a destabilization treatment combined with a subcritical diffusion (SCD) and a subsequent quenching (Q) steps on precipitation of secondary carbides and their influence on the wear properties of HCCI (16%Cr). The destabilization of the austenite at high temperature leads to a final microstructure composed of eutectic and secondary carbides, with an M7C3 nature, embedded in a martensitic matrix. An improved wear resistance was observed in the SCD + Q samples in comparison with the Q one, which was attributed to the size of secondary carbides.
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Acknowledgments
This work was supported by the CREATE Network Project, Horizon 2020 Program of the European Commission (RISE Project No. 644013). The authors want to thank Priv.-Doz. Dr. Jose Garcia from AB Sandvik Coromant R&D (Technology Area Manager Carbide and Sintering) for the helpful discussion and verification of some of the results.
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Guitar, M.A., Suárez, S., Prat, O. et al. High Chromium Cast Irons: Destabilized-Subcritical Secondary Carbide Precipitation and Its Effect on Hardness and Wear Properties. J. of Materi Eng and Perform 27, 3877–3885 (2018). https://doi.org/10.1007/s11665-018-3347-1
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DOI: https://doi.org/10.1007/s11665-018-3347-1