PSI - Issue 39

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

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Procedia Structural Integrity 39 (2022) 560–563

© 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: pearlitic steel; cold drawing; fatigue crack paths; macro-crack path; micro-crack path; multi-scale approach; macroscopic approach; microscopic approach. Abstract This paper offers a multiscale a proach (macro & micro) t the fatigue crack paths in progressively cold drawn pearlitic steels, with emphasis on th relationship between the p arlitic microstructure of the steels (progressively oriented as a cons quence of the manufacturing process by cold drawing) and the fatigue behaviour t the macro- and micro-scopic levels. To this end, a detailed fr cto-metallographic analysis was performed on the fatigue crack path ( macro- and micro-crack path ). With regard to the fatigue cro- rack path , it evolves following an elliptical shape with varying aspect ratio, t e latter being modified by the presence of manufacturing-induced residual stress fields. In the matter of fatigue micro-crack paths , results showed that they exhibit certain roughness at the microscopic level, in the form of a zig-zag shape including micro-deflections whose length and angle both depend on the cold drawing degree. © 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: pearlitic steel; cold drawing; fatigue crack paths; macro-crack path; micro-crack path; multi-scale approach; macroscopic approach; microscopic approach. 7th International Conference on Crack Paths Multiscale approach to fatigue crack propagation paths in cold drawn pearlitic steels Jesús Toribio*, Beatriz González, Juan-Carlos Matos, Francisco-Javier Ayaso Fracture & Structural Integrity Research Group (FSIRG), University of Salamanca (USAL) E.P.S., Campus Viriato, Avda. Requejo 33, 49022 Zamora, Spain Abstract This paper offers a multiscale approach (macro & micro) to the fatigue crack paths in progressively cold drawn pearlitic steels, with emphasis on the relationship between the pearlitic microstructure of the steels (progressively oriented as a consequence of the manufacturing process by cold drawing) and the fatigue behaviour at the macro- and micro-scopic levels. To this end, a detailed fracto-metallographic analysis was performed on the fatigue crack path ( macro- and micro-crack path ). With regard to the fatigue macro-crack path , it evolves following and elliptical shape with varying aspect ratio, the latter being modified by the presence of manufacturing-induced residual stress fields. In the matter of fatigue micro-crack paths , results showed that they exhibit certain roughness at the microscopic level, in the form of a zig-zag shape including micro-deflections whose length and angle both depend on the cold drawing degree. 7th International Conference on Crack Paths Multiscale approach to fatigue crack propagation paths in cold drawn pearlitic steels Jesús Toribio*, Beatriz González, Juan-Carlos Matos, Francisco-Javier Ayaso 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.2022.03.129