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Effect of elasto-plastic loading on the magnetic characteristics of steel 20 hardened with gas case-hardening

  • Magnetic Methods
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Abstract

The evolution of the magnetic characteristics of case-hardened Steel 20 under the influence of elasto-plastic tensile, compressive, and torsional strains is analyzed. The field dependence of the differential magnetic permeability is shown to reflect a three-layer nature of the obtained micro-structure: a hardened surface layer, a transition zone, and a ferrite-pearlite core. It is proposed to evaluate the level of the applied stresses on the basis of the peak field and the height of the differential magnetic permeability peaks of corresponding layers of the case-hardened steel.

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Authors and Affiliations

  1. Institute of Engineering Science, Ural Division, Russian Academy of Sciences, ul. Komsomol’skaya 34, Yekaterinburg, 620049, Russia

    E. S. Gorkunov, S. Yu. Mitropolskaya, E. M. Groznaya, A. N. Mushnikov, A. L. Osintseva & E. A. Tueva

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  1. E. S. Gorkunov
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  2. S. Yu. Mitropolskaya
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  3. E. M. Groznaya
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  4. A. N. Mushnikov
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  5. A. L. Osintseva
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  6. E. A. Tueva
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Correspondence to S. Yu. Mitropolskaya.

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Original Russian Text © E.S. Gorkunov, S.Yu. Mitropolskaya, E.M. Groznaya, A.N. Mushnikov, A.L. Osintseva, E.A. Tueva, 2011, published in Defektoskopiya, 2011, Vol. 47, No. 4, pp. 3–16.

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Gorkunov, E.S., Mitropolskaya, S.Y., Groznaya, E.M. et al. Effect of elasto-plastic loading on the magnetic characteristics of steel 20 hardened with gas case-hardening. Russ J Nondestruct Test 47, 221–231 (2011). https://doi.org/10.1134/S106183091104005X

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  • DOI: https://doi.org/10.1134/S106183091104005X

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