PSI - Issue 65

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 65 (2024) 121–126

The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) On the possibility of detecting potential fracture nuclei in the 09G2S steel by magnetic measurements Yu.V. Khudorozhkova a, b, *, A.M. Povolotskaya a,c a Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, 34 Komsomolskaya St., Ekaterinburg, 620049, Russia b Non-state Higher Educational Establishment «UMMC Technical University», 3 Uspenskiy Ave., Verkhnyaya Pyshma, 624091, Russia c M.N. Mikheev lnstitute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 18 S. Kovalevskoy St., Ekaterinburg, 620108, Russia The paper reports the results of measuring the magnetic characteristics (coercive force, residual induction, and maximum magnetic permeability) of a specimen made of the 09G2S low-carbon steel in different sectors of its gauge length, depending on the value of tensile load. Measurements are made in both major and minor magnetization reversal cycles. The principal possibility of using the coercive force in the minor cycles of the magnetization reversal of plastically deformed steel products in weak fields to detect potential fracture nucleation at early stages is experimentally shown. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Keywords: plastic strain localization; fracture site; coercive force; magnetic state; surface profile; nondestructive testing; pipe steel; prefracture zones. The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) On the possibility of detecting potential fracture nuclei in the 09G2S steel by magnetic measurements Yu.V. Khudorozhkova a, b, *, A.M. Povolotskaya a,c a Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, 34 Komsomolskaya St., Ekaterinburg, 620049, Russia b Non-state Higher Educational Establishment «UMMC Technical University», 3 Uspenskiy Ave., Verkhnyaya Pyshma, 624091, Russia c M.N. Mikheev lnstitute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 18 S. Kovalevskoy St., Ekaterinburg, 620108, Russia Abstract The paper reports the results of measuring the magnetic characteristics (coercive force, residual induction, and maximum magnetic permeability) of a specimen made of the 09G2S low-carbon steel in different sectors of its gauge length, depending on the value of tensile load. Measurements are made in both major and minor magnetization reversal cycles. The principal possibility of using the coercive force in the minor cycles of the magnetization reversal of plastically deformed steel products in weak fields to detect potential fracture nucleation at early stages is experimentally shown. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Keywords: plastic strain localization; fracture site; coercive force; magnetic state; surface profile; nondestructive testing; pipe steel; prefracture zones. © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Abstract

1. Introduction 1. Introduction

The analysis of theoretical generalizations and experimental data has lately revealed that plastic deformation in materials is not uniform over the volume, but localized only within separate regions referred to as plastic strain localization zones, see in Honeycombe (1968), Pavlov (1962), Smirnov et al. (1987). This localization of macroscopic strain is one of the main features in the deformation of materials with very different structures, see, The analysis of theoretical generalizations and experimental data has lately revealed that plastic deformation in materials is not uniform over the volume, but localized only within separate regions referred to as plastic strain localization zones, see in Honeycombe (1968), Pavlov (1962), Smirnov et al. (1987). This localization of macroscopic strain is one of the main features in the deformation of materials with very different structures, see,

* Corresponding author. Tel.: +7-904-387-5059. E-mail address: khjv@mail.ru * Corresponding author. Tel.: +7-904-387-5059. E-mail address: khjv@mail.ru

2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 10.1016/j.prostr.2024.11.019