Abstract
The role of cementite in the mechanisms of formation of the coercive force of high-purity 60 and 13 model steels and 9A and 12A industrial steels after quenching and subsequent medium- and high-temperature tempering is determined from the analysis of the temperature dependences of the coercive force. It is shown that cementite as a hard-magnetic phase plays an important part in the formation of the dependence H c (T temp) measured at room temperature. The maximum contribution caused by the coercivity of cementite to H c of the model steels is proportional to the volume content of cementite. In the industrial steels, an effect on the coercivity of cementite is produced by carbideforming unavoidable impurities.
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Original Russian Text © A.V. Zagainov, A.I. Ul’yanov, A.A. Chulkina, I.A. Zykina, 2012, published in Defektoskopiya, 2012, Vol. 48, No. 1, pp. 44–54.
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Zagainov, A.V., Ul’yanov, A.I., Chulkina, A.A. et al. The effect of cementite on the formation of the magnetic hysteresis properties of thermally treated carbon steels. Russ J Nondestruct Test 48, 35–43 (2012). https://doi.org/10.1134/S1061830912010123
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DOI: https://doi.org/10.1134/S1061830912010123