Abstract
Experimental data are presented for the field dependences of differential magnetic permeability μd (H0) of plastically deformed low-carbon steel-St3 samples both in an unloaded state and under tensile stresses. It is shown that applying tensile stresses drastically changes the shape of curves μd (H0 ) a fact that indicates compensation of internal residual compressive stresses in the samples by external tensile stresses. A new technique is proposed for the experimental determination of the critical fields of displacement of 90-degree domain boundaries based on dependences μd (H0 ). Residual compressive stresses in plastically deformed St3 steel are estimated.
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Original Russian Text © V.G. Kuleev, A.N. Stashkov, T.P. Tsar’kova, A.P. Nichipuruk, 2018, published in Defektoskopiya, 2018, No. 10, pp. 37–41.
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Kuleev, V.G., Stashkov, A.N., Tsar’kova, T.P. et al. Experimental Determination of Critical Fields of 90-Degree Domain Wall Displacement in Plastically Deformed Low-Carbon Steels. Russ J Nondestruct Test 54, 711–716 (2018). https://doi.org/10.1134/S1061830918100078
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DOI: https://doi.org/10.1134/S1061830918100078