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Structure and properties of powder-metallurgical materials of the Fe-Cr-Cu-C system

  • Powder-Metallurgical Materials
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    In powder-metallurgical, composites of the Fe-Cr-Cu-C system, upon varying the chromium content and the sintering temperature bright regions are formed based on the starting chromium containing special chromium carbides. Upon increasing the chromium content, the fraction and size of the bright regions increase in value.

  2. 2.

    Increase in the sintering temperature from 1140 to 1230°C promote the saturation of iron with chromium and generation of an austenite—martensite matrix during cooling by the replacement of pearlite and formation of chromium carbides (Cr23C6 instead of Cr7C3) that are thermally more stable. The flexural strength of the material increases during this process, which is related to the generation of intraparticle fracture.

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Literature Cited

  1. S. A. Saltykov, Stereometric Metallography [in Russian], Metallurgiya, Moscow (1976).

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  2. T. A. Pumpyanskaya, V. Ya. Bulanov, and V. G. Zyryanov, An Atlas of the Structures of Ferrous Powder-Metallurgical Materials [in Russian], Nauka, Moscow (1986).

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  3. C. J. Smithells, Metals Reference Book, 4th edn., Plenum, New York (1967).

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Authors
  1. N. A. Nikishov
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  2. I. V. Bogolyubova
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  3. S. Yu. Lopukhin
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Additional information

"NIITavtoprom" Scientific-Industrial Complex. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 28–30, November, 1992.

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Nikishov, N.A., Bogolyubova, I.V. & Lopukhin, S.Y. Structure and properties of powder-metallurgical materials of the Fe-Cr-Cu-C system. Met Sci Heat Treat 34, 700–703 (1992). https://doi.org/10.1007/BF00712428

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  • DOI: https://doi.org/10.1007/BF00712428

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