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

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

ScienceDirect

Procedia Structural Integrity 39 (2022) 488–493

© 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: microstructural integrity; cold drawn pearlitic steel; commercial prestressing steel wire; environmentally assisted cracking (EAC); stress corrosion cracking (SCC); hydrogen assisted cracking (HAC); hydrogen assisted fracture (HAF); hydrogen-assisted micro-damage (HAMD); tearing topography surface (TTS); locally anisotropic hydrogen embrittlement; micro-cracking paths. Abstract This paper analyses the anisotropic fracture behaviour exhibited by initially-sm oth samples of cold drawn pearlitic steel wires (comm rcial prestressing steel wires) subjected to tensile tests in aggressive environment promoted by a corrosion cell. Two testing r tes were us d: one moderately fast (0.1 m /min) and another moderately slow (0.01 mm/min). The electro-chemical potential ranged between –1100 mV SCE an –1400 mV SCE (cathodic conditions) to promote hydrogen embrittlement (HE). Axial micro cracking paths (lo al crack path deflection) and locally anisotropic HE behaviour was exhibited by the specimens but th phenomenon is strictly local, because the triaxiality level is not high en ugh to produce global crack path deflection in the presenc of hydrogen. Th anisotropic fracture behaviour shows marked deviations of the fracture path from the initial fracture zone till the fracture end zone, such deviations being higher than those observed in the specimens failing in inert environment. © 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: microstructural integ ity; cold drawn pearlitic steel; commercial prestr ssing s eel wire; environmentally assisted acking (EAC); stress cor osion cracking (SCC); hydrogen assisted c acking (HAC); hydrog n assisted fracture (HAF); hydrogen-assisted micro-damage (HAMD); tearing topography surface (TTS); locally anisotropic hydrogen embrittlement; micro-cracking paths. 7th International Conference on Crack Paths Axial micro-cracking paths and locally anisotropic hydrogen embrittlement behaviour in cold drawn pearlitic steel wires Jesús Toribio*, Francisco-Javier Ayaso, Antonio Fernández-Viña 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 the anisotropic fracture behaviour exhibited by initially-smooth samples of cold drawn pearlitic steel wires (commercial prestressing steel wires) subjected to tensile tests in aggressive environment promoted by a corrosion cell. Two testing rates were used: one moderately fast (0.1 mm/min) and another moderately slow (0.01 mm/min). The electro-chemical potential ranged between –1100 mV SCE and –1400 mV SCE (cathodic conditions) to promote hydrogen embrittlement (HE). Axial micro cracking paths (local crack path deflection) and locally anisotropic HE behaviour was exhibited by the specimens but the phenomenon is strictly local, because the triaxiality level is not high enough to produce global crack path deflection in the presence of hydrogen. The anisotropic fracture behaviour shows marked deviations of the fracture path from the initial fracture zone till the fracture end zone, such deviations being higher than those observed in the specimens failing in inert environment. 7th International Conference on Crack Paths Axial micro-cracking paths and locally anisotropic hydrogen embrittlement behaviour in cold drawn pearlitic steel wires Jesús Toribio*, Francisco-Javier Ayaso, Antonio Fernández-Viña 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.2022.03.121