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Change in mechanical properties of nickel steels at low temperatures under the action of a pulsed magnetic field

  • Strength Properties
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Under the action of a pulsed magnetic field the greatest increase in the nominal yield strength and the tensile strength of the steels with metastable austenite is obtained at treatment temperatures close to the MS point.

  2. 2.

    The appearance in the structure of the steels of cooling martensite leads to suppression of the martensite transformation under the action of the magnetic field. As a rule the martensite formed in application of the field has a similar influence on the γ→α transformation in subsequent plastic deformation. However, for the steel with polythermal kinetics of the martensite transformation with a low content of martensite formed under the action of the field the reverse picture is observed.

  3. 3.

    Treatment in the magnetic field at temperatures below the MS point provides primarily an increase in the yield strength of the steels and for the steel with isothermal kinetics of the transformation this is related only to the formation of an additional quantity of martensite while for the steel with polythermal kinetics it is also related to the increase in stability of the residual austenite in relation to the action of elastic stresses.

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Authors
  1. B. V. Potapov
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  2. B. G. Khoroshailov
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  3. A. G. Yaroshenko
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Additional information

Leningrad Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 25–29, September, 1986.

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Potapov, B.V., Khoroshailov, B.G. & Yaroshenko, A.G. Change in mechanical properties of nickel steels at low temperatures under the action of a pulsed magnetic field. Met Sci Heat Treat 28, 650–654 (1986). https://doi.org/10.1007/BF00742744

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  • DOI: https://doi.org/10.1007/BF00742744

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