PSI - Issue 28

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Procedia Structural Integrity 00 (2020) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Procedia Structural Integrity 00 (2020) 000–000

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

Procedia Structural Integrity 28 (2020) 2424–2431

© 2020 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 the European Structural Integrity Society (ESIS) ExCo © 2020 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 the European Structural Integrity Society (ESIS) ExCo Abstract This paper offers a palimpsestus approach t the multiscale microstructural evolution i progressively cold drawn pearlitic st el, analyzing in particular the evoluti n with cold drawing of: (i) the prior austenitic grain ( zero, or virtual, microstructural level ); (ii) the pearlitic colony ( first microstructural level ); (iii) the pearlit lamellae (second microstructural level). Results demonstrat that the slender earlitic colony (after cold drawing) –more than the prior aust nitic grain (that is also virtually cold drawn in the palimpsestus approach)– is the microstructural unit governing the cleavage facet size. © 2020 The Authors. Published by ELSEVIER B.V. This is an ope access article under t CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 1st Virtual European Conference on Fracture Multiscale microstructural evolution in cold drawn pearlitic steel: A Palimpsestus Approach and a Tribute to Raffaello Jesús Toribio* 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 palimpsestus approach to the multiscale microstructural evolution in progressively cold drawn pearlitic steel, analyzing in particular the evolution with cold drawing of: (i) the prior austenitic grain ( zero, or virtual, microstructural level ); (ii) the pearlitic colony ( first microstructural level ); (iii) the pearlite lamellae (second microstructural level). Results demonstrate that the slender pearlitic colony (after cold drawing) –more than the prior austenitic grain (that is also virtually cold drawn in the palimpsestus approach)– is the microstructural unit governing the cleavage facet size. 1st Virtual European Conference on Fracture Multiscale microstructural evolution in cold drawn pearlitic steel: A Palimpsestus Approach and a Tribute to Raffaello Jesús Toribio* Fracture & Structural Integrity Research Group (FSIRG), University of al manca (USAL) E.P.S., Campus Viriato, Avda. Requejo 33, 49022 Zamora, Spain Keywords: Pearlitic steel; cold drawing; multiscale microstructural evolution; prior austenite grain; pearlitic colonies; pearlite lamellae. Keywords: Pearlitic steel; cold drawing; multiscale microstructural evolution; prior austenite grain; pearlitic colonies; pearlite lamellae. 1. Introduction Cold drawn pearlitic steels are used in engineering as constitutive materials of prestressing steel wires employed as components of prestressed concrete in civil engineering. Previous research showed that the manufacturing process by progressive (multi-step) cold drawing generates in the steel wires an increasing microstructural orientation (anisotropy) and densification, as reported by Toribio and Ovejero (1997, 1998a, 1998b, 1998c). 1. Introduction Cold drawn pearlitic steels are used in engineering as constitutive materials of prestressing steel wires employed as components of prestressed concrete in civil engineering. Previous research showed that the manufacturing process by progressive (multi-step) cold drawing generates in the steel wires an increasing microstructural orientation (anisotropy) and densification, as reported by Toribio and Ovejero (1997, 1998a, 1998b, 1998c).

* 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 © 2020 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 the European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND license (ht ps:// r ativecommons. rg/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 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 the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.11.092