Abstract
The influence of cold plastic deformation on phase transformations and on the magnetic properties of powder specimens of the Fe-5-at. % C alloy modeling U12 high-carbon steel has been investigated in the context of nondestructive testing. It has been shown that under high plastic deformation dissolution of cementite Fe3C occurs by the scheme α-Fe + Fe3C → α-Fe + (Fe3C)d + α-Fe + Am(Fe-C). An increase in the rate of plastic deformation of powders decreases the coercive force from 50 to 13 A/cm due to the low coercivity of the #x03B1;-Fe and Am(Fe-C) phases. The structural state of high-carbon steels following a strong cold plastic deformation can be determined by measuring two magnetic parameters: the coercive force, and the temperature dependence of differential magnetic permeability.
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Translated from Defektoskopiya, Vol. 40, No. 7, 2004, pp. 42–52.
Original Russian Text Copyright © 2004 by A.I. Ul’yanov, Arsent’eva, Zagainov, A.L. Ul’yanov, Elsukov, Dorofeev.
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Ul’yanov, A.I., Arsent’eva, N.B., Zagainov, A.V. et al. The possibility of testing the structural state of highly-deformed high-carbon steels by the magnetic method. Russ J Nondestruct Test 40, 462–468 (2004). https://doi.org/10.1007/s11181-005-0076-y
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DOI: https://doi.org/10.1007/s11181-005-0076-y