PSI - Issue 37

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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ScienceDirect

Procedia Structural Integrity 37 (2022) 1001–1006

© 2022 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 Pedro Miguel Guimaraes Pires Moreira © 2022 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 Pedro Miguel Guimaraes Pires Moreira Keywords: microstructural integrity; cold drawn pearlitic steel; commercial prestressing steel wire; environmentally assisted cracking (EAC); stress corrosion cracking (SCC); localised anodic dissolution (LAD); hydrogen assisted cracking (HAC); hydrogen assisted fracture (HAF); hydrogen assisted micro-damage (HAMD); tearing topography surface (TTS). Abstract This paper deals with envir nmentally-assisted microstructural integrity of ommercial cold drawn pearlitic steel wires to be used as prestressing steel wires for prestressed concrete in civil engineering structures. The article contains a fractographic nalysis of the fracture surfaces of initially-smooth samples of commercial prestressing steel wires subjected to tensile tests in aggressiv environment promoted by a corrosion cell consisting of th metallic sample and a three-electrode assembly. Two testing rates w re used: one moderately fast (0, mm/ in) and another moderately slow (0,01 mm/min). The electro-chemical potential used covers a wide range (from – 400 to – 1400 mV SCE), thus including from anodic to c thodic conditions. The main objective is focused on the study of the fracture surface for those specime s t at failed due to the aggr ssive environment (inside corrosion cell). The analysis of the fracture surface is made by considering the different domains of the micro-fracture map (MFM). © 2022 The Authors. Published by ELSEVIER B.V. This is an ope access article under the CC BY-NC-ND lic nse (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira Keywords: microstructural integrity; cold drawn pearlitic steel; commercial pre ressing steel wire; environm t lly assisted cracking (EAC); str ss corrosion cracking (SCC); localised a odic dissolution (LAD); hydrogen assisted cracking (HAC); hydrogen assisted fracture (HAF); hydrogen assisted micro-damage (HAMD); tearing topography surface (TTS). ICSI 2021 The 4th International Conference on Structural Integrity Environmentally-assisted microstructural integrity of commercial 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 deals with environmentally-assisted microstructural integrity of commercial cold drawn pearlitic steel wires to be used as prestressing steel wires for prestressed concrete in civil engineering structures. The article contains a fractographic analysis of the fracture surfaces of initially-smooth samples of commercial prestressing steel wires subjected to tensile tests in aggressive environment promoted by a corrosion cell consisting of the metallic sample and a three-electrode assembly. Two testing rates were used: one moderately fast (0,1 mm/min) and another moderately slow (0,01 mm/min). The electro-chemical potential used covers a wide range (from – 400 to – 1400 mV SCE), thus including from anodic to cathodic conditions. The main objective is focused on the study of the fracture surface for those specimens that failed due to the aggressive environment (inside corrosion cell). The analysis of the fracture surface is made by considering the different domains of the micro-fracture map (MFM). ICSI 2021 The 4th International Conference on Structural Integrity Environmentally-assisted microstructural integrity of commercial 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 © 2022 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 Pedro Miguel Guimaraes Pires Moreira 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an ope acces article under the CC BY-NC-ND lic nse (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira

2452-3216 © 2022 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 Pedro Miguel Guimaraes Pires Moreira 10.1016/j.prostr.2022.02.037