PSI - Issue 39

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Procedia Structural Integrity 00 (2021) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Procedia Structural Integrity 00 (2021) 000–000

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

Procedia Structural Integrity 39 (2022) 475–478

© 2021 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 CP 2021 – Guest Editors © 2021 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 CP 2021 – Guest Editors Keywords: eutectoid steel; prestressing steel; pearlitic steel; cold drawing; pearlitic microstructure; drawing-induced microstructural evolution; microstructural orientation; pearlite interlamellar spacing decrease; environmentally assisted cracking (EAC); localized anodic dissolution (LAD); stress corrosion cracking (SCC); SCC paths; anisotropic behaviour. Abstract This paper analyses stress corrosion cracking (SCC) paths in cold drawn pearlitic steels in which progressive cold drawing produces a preferential orientation of the pearlitic microstructure in the matter of colonies and lamellae, thereby inducing strength anisotropy in th steel, and thus the resistance to SCC is a directional property that depends on the angle in relation to t e drawing direction. Therefore, an initial transverse crack changes its propagation direction to approach that of th wire axis, thus producing mixed mode propagation, the deflection angle being an increasing function of the cold drawing degree. This experimental result may be explained by micro-mechanical considerations on the basis of the la ellar microstructure of the steels. A relationship is established between the microstructural angles and the deflection angles of the macroscopic SCC path, thus providing a materials science type relationship between the microstructure and the macroscopic crack. © 2021 The Authors. Published by ELSEVIER B.V. This is an ope access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors Keywords: eutectoid steel; r stress g steel; pearliti steel; cold draw ng; p arlitic microstructure; drawing-induc microstructural evolution microstructural o ientation; pearlite interlamellar spacing decrease; environmentally assisted cracking (EAC); localized anodic dissolution (LAD); stress corrosion cracking (SCC); SCC paths; anisotropic behaviour. 7th International Conference on Crack Paths Stress corrosion cracking paths in cold drawn pearlitic steels Jesús Toribio*, Elena Ovejero Fracture & Structural Integrity Research Group (FSIRG), University of Salamanca (USAL) E.P.S., Campus Viriato, Avda. Requejo 33, 49022 Zamora, Spain Abstract This paper analyses stress corrosion cracking (SCC) paths in cold drawn pearlitic steels in which progressive cold drawing produces a preferential orientation of the pearlitic microstructure in the matter of colonies and lamellae, thereby inducing strength anisotropy in the steel, and thus the resistance to SCC is a directional property that depends on the angle in relation to the drawing direction. Therefore, an initial transverse crack changes its propagation direction to approach that of the wire axis, thus producing mixed mode propagation, the deflection angle being an increasing function of the cold drawing degree. This experimental result may be explained by micro-mechanical considerations on the basis of the lamellar microstructure of the steels. A relationship is established between the microstructural angles and the deflection angles of the macroscopic SCC path, thus providing a materials science type relationship between the microstructure and the macroscopic crack. 7th International Conference on Crack Paths Stress corrosion cracking paths in cold drawn pearlitic steels Jesús Toribio*, Elena Ovejero Fracture & Structural Integrity Research Group (FSIRG), University of al manca (USAL) E.P.S., Campus Viriato, Avda. Requejo 33, 49022 Zamora, Spain

* Corresponding author. Tel.: +34-677566723; fax: +34-980545002. E-mail address: toribio@usal.es * Correspon ing author. Tel.: +34-677566723; fax: +34-980545002. E-mail address: toribio@usal.es

2452-3216 © 2021 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 CP 2021 – Guest Editors 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an ope acces article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors

2452-3216 © 2021 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 CP 2021 – Guest Editors 10.1016/j.prostr.2022.03.118