PSI - Issue 40

S.M. Zadvorkin et al. / Procedia Structural Integrity 40 (2022) 455–460 S.M. Zadvorkin, A.M. Povolotskaya / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 6. Results of recording the tangential component of the magnetic leakage field on the surface of the magnetized St3 steel specimen containing three bands of plastic strain localization (a) and a photograph of the specimen gauge length (b); the arrow shows the path of scanning the specimen by a fluxgate transducer. 4. Conclusion The analysis of the dependence of demagnetizing current, rms voltage, the number of Barkhausen jumps, as well as the parameters of magnetic leakage field, on the position of an attached transducer on plastically deformed carbon steel specimens has shown that near the plastic strain localization zones there are substantial changes in the measured magnetic parameters. The results obtained have been explained on the basis of the current concept of the anisotropy of internal stresses in plastically pre-deformed materials. The identified patterns can be a basis for developing magnetic methods for the early detection of potential fracture sites in the form of strain localization zones in products made of ferromagnetic materials. Acknowledgements The work was performed under the state assignment, theme AAAA-a18-118020790148-1. References Bilger, H., Träuble, H., 1965. Temperatur und Verformungsabhangikeit der Koerziti vfeldstarke von Eisen Einkristallen. Physica Status Solidi 10, 755 – 759. Gorkunov, E.S., 2015. Magnetic structural-phase analysis as applied to diagnosing and evaluating the lifetime of products and structural components. Part I. Diagnostics, Resource and Mechanics of Materials and Structures 1, 6 – 40. Gorkunov, E.S., Bashkov, Yu.F., Durnitskii, V.N., Tabachnik, V.P., 2003. Magnetizer. Ru Patent 33653. Gorkunov, E.S., Makhov, V.N., Povolotskaya, A.M., Tuzankin, S.V., Subbotin, Y.S., Lapidus, B.M., 1999. A magnetic-structure research suite. Russian Journal of Nondestructive Testing 35 (3), 237 – 241. Honeycombe, R.W.K., 1968. The plastic deformation of metals. Edward Arnold Press, London, pp. 477. Mikheev, M.N., Gorkunov, E.S., 1993. Magnetic methods of structural analysis and nondestructive testing. Nauka, Moscow. Pavlov, V.A., 1962. Physical basics of plastic deformation of metals. Izdatel'stvo AN SSSR, Moscow, pp. 200. Shveikin, V.P., Smirnov, S.V., 1998. Method for Determination of the Strain Hardening Law and for Analysis of Early Fracture Stages of Some Structural Components. Key Engineering Materials 149 (II), 847 – 852. Smirnov, S.V., Levit, V.I., Kolmogorov, V.L., Shalimova, A.V., 1987. Investigation of damage during the wire drawing of mild steel. Izvestiia AN SSSR. Metally 2, 144 – 150. Träuble, H., 1966. Magnetisierungskurve und magnetische Hysterese ferromagnetischer Einkristall. Heidelberg, Berlin, Springer, New York, pp. 318. Vicena, F., 1955. On the influence of dislocations on the coercive force of ferromagnetics. Czechoslovak Journal of Physics 5 (4), 480 – 501.