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Effect of C and Cr on the structure, phase composition, and mechanical properties of cast Fe−Cr alloys

  • Corrosion-Resistant Steels
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Steels of type 90Kh28MFTAL containing 0.5–0.85% C are in a nonequilibrium condition. Their structure is alloyed ferrite and complex carbides of the M7C3 type. Steel with 1% C is in an equilibrium condition and it consists of alloyed ferrite with a complexly alloyed M23C6 type carbide.

  2. 2.

    An increase in carbon content from 0.5 to 1% does not lead to a marked reduction in chromium in solid solution. The degree of the reduction in chromium concentration in solid solution depends on the alloying capacity of the complex carbide formed.

  3. 3.

    A change in the amount of chromium from 20 to 27% with a carbon content up to 0.6% does not markedly affect the strength properties and hardness of the matrix and carbides.

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Literature cited

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Authors
  1. G. P. Chernova
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  2. N. L. Bogdashkina
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  3. A. I. Porshneva
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  4. V. A. Shvets
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  5. G. N. Troshkin
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Additional information

Institute of Physical Chemistry, Academy of Sciences of the USSR. All-Union Scientific-Research Institute of Hydraulic Machine Building. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 47–49, January, 1989.

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Chernova, G.P., Bogdashkina, N.L., Porshneva, A.I. et al. Effect of C and Cr on the structure, phase composition, and mechanical properties of cast Fe−Cr alloys. Met Sci Heat Treat 31, 60–63 (1989). https://doi.org/10.1007/BF00735332

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