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Influence of tempering temperature on stability of carbide phases in 2.6cr-0.7mo-0.3v steel with various carbon content

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An Erratum to this article was published on 01 July 1996

Abstract

The present work evaluates the influence of the bulk carbon content (0.1, 0.006, and 0.005 wt pct) and tempering temperature (823, 853, and 913 K) on stability, chemical composition, and size of carbide particles in 540 ks tempered states of 2.6Cr-0.7Mo-0.3V steel. The scanning transmission electron microscopy/energy-dispersive X-ray spectroscopy (STEM/EDXS) and electron diffraction methods were used to analyze the carbide particles. A characteristic energy-dispersive X-ray (EDX) spectrum can be attributed to each of the identified carbides. The MC carbide is stable in all experimental states. The phase stability of Fe-Cr-rich carbides increased in the order ε, Fe3C → M3C → M7C3, with tempering temperature increasing. In steels with higher carbon content tempered at low temperature, M23C6 carbide was also noted. The Mo2C and M6C carbides were not observed. It was shown that the decrease of the bulk carbon content has the same influence on the carbide phases stability as the increase of the bulk vanadium content at the unchanged Cr, Mo, C bulk contents and tempering temperature. Similarly, the decrease of tempering temperature has the same influence on the carbide phases stability as the decrease of the bulk Cr content at the unchanged V, Mo, and C bulk contents.

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Authors and Affiliations

  1. Slovak Academy of Sciences, Institute of Materials Research, 043 53-Kosice, 47, Watsonova, Slovakia

    J. Janovec (Research Staff Member) & A. Vyrostkova (Research Worker)

  2. Academy of Sciences of the Czech Republic, Institute of Physical Metallurgy, 61662-Brno, 22, Zizkova, Czech Republic

    M. Svoboda (Research Staff Member)

Authors
  1. J. Janovec
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  2. A. Vyrostkova
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  3. M. Svoboda
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02651958.

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Janovec, J., Vyrostkova, A. & Svoboda, M. Influence of tempering temperature on stability of carbide phases in 2.6cr-0.7mo-0.3v steel with various carbon content. Metall Mater Trans A 25, 267–275 (1994). https://doi.org/10.1007/BF02647972

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  • DOI: https://doi.org/10.1007/BF02647972

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