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Effect of heat treatment and nitriding on the magnetic properties of austenitic steels

  • Heat Treatment Technology
  • Published:
Metal Science and Heat Treatment of Metals Aims and scope

Conclusions

  1. 1.

    A change of the normalizing temperature of steel A from 1070 to 1150°C and also an additional aging for 8 hrs at 800°C have practically no effect on the magnetic susceptibility of this steel.

  2. 2.

    Nitriding changes considerably the magnetic permeability of the steels in question. The nitrided case of both austenitic steels is ferromagnetic, this being due to the formation of nitrides, the depletion of austenite in alloy elements and its decomposition.

  3. 3.

    Nitriding results in a higher magnetic permeability of steel A (three-fold) compared with steel B.

  4. 4.

    An increasing depth of the nitrided case results in an increasing maximum magnetic permeability. An increase of the relative nitriding depth on steel A from 23 to 48.5% results in a doubling of the permeability. An equivalent change from 50% to 93.65% in steel B results in a jump of permeability from 3.7 to 19.8 gauss/oersted.

  5. 5.

    The results of this study indicate that it is possible to determine the depth of a nitrided case on a variety of austenitic steels by electromagnetic methods.

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References

  1. V. I. Arkharov, M. M. Belenkova, M. N. Mikheev, A. I. Moiseev, and I. L. Polikarpova, Fizika Met. i Metalloved., Vol. 6, 1958, No. 4, 633–642.

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  3. I. I. Kifer, and V. S. Pantyushin, Investigations into Ferromagnetic Materials. [Book, in Russian], Gosenergoizdat Press, 1955.

  4. M. N. Mikheev, Zhurn. Tekhn. Fiz., vol. 15, 1945, No. 9

  5. A. V. Kostenko, E. V. Lopukhina, T. M. Pogrebetskaya and A. A. Yurgenson, Fizika Met i. Metalloved., vol. 9, 1960, No. 6, 868–877.

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Authors
  1. M. M. Belenkova
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  2. A. V. Kostenko
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  3. M. N. Mikheev
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  4. É. É. Stoinskaya
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  5. T. M. Pogrebetskaya
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  6. A. A. Yurgenson
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Additional information

Soviet Patent No. 16, 915 of January 4, 1960.

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Belenkova, M.M., Kostenko, A.V., Mikheev, M.N. et al. Effect of heat treatment and nitriding on the magnetic properties of austenitic steels. Met Sci Heat Treat 2, 591–594 (1960). https://doi.org/10.1007/BF00651929

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  • DOI: https://doi.org/10.1007/BF00651929

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