PSI - Issue 53

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 53 (2024) 407–415

© 2023 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 scientific committee of the ESIAM23 chairpersons The aim of the work was the development of procedures for recovery and improvement of the service life of rails subjected to wear. For this, the study focusses on five different metal powders that were selected to perform a laser repaired on a tram rail damaged by wear. The rolling corner of a high carbon rail steel was machined to simulate the real wear and, after the repaired, a hardness and a microstructure characterization was carried out to check the weldability of each material. This framework also facilitates the study of the economic and technical feasibility of the solution for its implementation on the track in the near future. © 2023 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 scientific committee of the ESIAM23 chairpersons Keywords: Rail repair, additive manufacturing techniques, high carbon steel, wear Abstract In the railway sector, the increase in the axle loads as well as the increase in traffic favor greater wear of the rails. Tramways increasingly suffer from this problem due to the complexity of their track designs: low curvature radii increase track wear and the fact that they are normally embedded in the road makes it difficult to repair them using traditional welding methods. Recovery techniques using laser technologies allow to repair this kind of rails quickly and without affecting the track. In addition, the possibility of using different types of powders in each repair gives greater scope to tramway administrations when it comes to tackling other problems (wave wear, noise, squealing …). Third European Conference on the Structural Integrity of Additively Manufactures Materials (ESIAM23) Feasibility study of defect repair processes in tram rails using printed laser techniques Daniel R. Galán-Rivera a,b *, Diego Manzano-Palacios a , José A. Arancón a a ArcelorMittal Global R&D Spain, Av Marques de Suances, s/n, Avilés 33402, Spain b University of Oviedo, Department of Materials Science and Metallurgy, C/ San Francisco 3, Oviedo 33003, Spain

* Corresponding author. Tel.: +34 686 597 504 E-mail address: daniel-ramon.galanrivera@arcelormittal.com

2452-3216 © 2023 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 scientific committee of the ESIAM23 chairpersons

2452-3216 © 2023 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 scientific committee of the ESIAM23 chairpersons 10.1016/j.prostr.2024.01.047