The possibility of testing the structural state of highly-deformed high-carbon steels by the magnetic method |
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Authors: | A I Ul’yanov N B Arsent’eva A V Zagainov A L Ul’yanov E P Elsukov G A Dorofeev |
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Affiliation: | (1) Physicotechnical Institute, Ural Division, Russian Academy of Sciences, ul. Kirova 132, 426034 Izhevsk, Russia |
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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 -Fe + Fe3C -Fe + (Fe3C)d + -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.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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