PSI - Issue 54

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 ScienceDirect

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 54 (2024) 212–217

© 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 ICSI 2023 organizers Abstract Hydrogen embrittlement of a 2205 DSS has been evaluated by in-situ tensile tests at high-pressure hydrogen gas. Mechanical tests were conducted in smooth and notched samples, following the ASTM G142 standard. Hydrogen embrittlement susceptibility was studied at 70 and 140 bar. In the smooth samples, the loss of ductility was marked. However, the increase in hydrogen pressure from 70 to 140 bar seems to be practically negligible. On the other hand, in the notched samples, hydrogen damage was especially remarkable at 140 bar. Finally, hydrogen embrittlement susceptibility is also discussed based on the fracture micromechanims. © 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 ICSI 2023 organizers 1. Introduction Energy transition in the European Union is expected to require hydrogen to represent a 24% of the EU total energy demand in 2050. One of the main challenges in the optimisation of hydrogen transport and storage lies in the selection of materials that can operate under high-pressure hydrogen in safe conditions while keeping a reasonable cost per stored H 2 kg. In this regard, the use of duplex stainless steels (DSS) represents a feasible alternative to control hydrogen susceptibility. For instance, in comparison to carbon or CrMo steels, DSS promise the optimized performance both in strength (because of the ferrite phase) and corrosion resistance (due to the austenite phase). The International Conference on Structural Integrity 2023 (ICSI 2023) Evaluating hydrogen embrittlement susceptibility of a 2205 DSS L.B. Peral a,b, *, A. Díaz b , R. Rodríguez Aparicio b , J.M. Alegre b , I.I. Cuesta b a University of oviedo, C/Wifredo Ricart s/n, Gijón 33203, Spain b University of Burgos, Avenida de Cantabria s/n, Burgos 09006, Spain Abstract Hydrogen embrittlement of a 2205 DSS has been evaluated by in-situ tensile tests at high-pressure hydrogen gas. Mechanical tests were conducted in smooth and notched samples, following the ASTM G142 standard. Hydrogen embrittlement susceptibility was studied at 70 and 140 bar. In the smooth samples, the loss of ductility was marked. However, the increase in hydrogen pressure from 70 to 140 bar seems to be practically negligible. On the other hand, in the notched samples, hydrogen damage was especially remarkable at 140 bar. Finally, hydrogen embrittlement susceptibility is also discussed based on the fracture micromechanims. © 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 ICSI 2023 organizers Keywords: 2205 DSS, in-situ tensile tests, hydrogen embrittlement, fracture micromechanims 1. Introduction Energy transition in the European Union is expected to require hydrogen to represent a 24% of the EU total energy demand in 2050. One of the main challenges in the optimisation of hydrogen transport and storage lies in the selection of materials that can operate under high-pressure hydrogen in safe conditions while keeping a reasonable cost per stored H 2 kg. In this regard, the use of duplex stainless steels (DSS) represents a feasible alternative to control hydrogen susceptibility. For instance, in comparison to carbon or CrMo steels, DSS promise the optimized performance both in strength (because of the ferrite phase) and corrosion resistance (due to the austenite phase). The International Conference on Structural Integrity 2023 (ICSI 2023) Evaluating hydrogen embrittlement susceptibility of a 2205 DSS L.B. Peral a,b, *, A. Díaz b , R. Rodríguez Aparicio b , J.M. Alegre b , I.I. Cuesta b a University of oviedo, C/Wifredo Ricart s/n, Gijón 33203, Spain b University of Burgos, Avenida de Cantabria s/n, Burgos 09006, Spain Keywords: 2205 DSS, in-situ tensile tests, hydrogen embrittlement, fracture micromechanims

* Corresponding author. E-mail address: luisborja@uniovi.es * Corresponding author. E-mail address: luisborja@uniovi.es

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 ICSI 2023 organizers 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 ICSI 2023 organizers

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 ICSI 2023 organizers 10.1016/j.prostr.2024.01.075