PSI - Issue 42

ScienceDirect Structural Integrity Procedia 00 (0000) 000 – 000 Structural Integrity Procedia 00 (0000) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ

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

Procedia Structural Integrity 42 (2022) 1708–1713

© 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 the scientific committee of the 23 European Conference on Fracture – ECF23 Abstract The aim of the present work is to investigate the influence of different corrosive solutions on the corrosion degradation mechanism of Al-Cu-Li (2198) aluminum alloy. Exposure of tensile specimens was employed in three different corrosion solutions, namely exfoliation corrosion , 3.5 wt. % NaCl and Harrison’s (diluted version) solution to study the corrosion -induced degradation of mechanical properties of the alloy. Additionally, macroscopical analysis of the surface deterioration was conducted for several exposure times. Tensile test results showed different corrosion behaviour for the three different corrosive solutions; specimens exposed to Harrison’s solution exh ibited the highest decrease as well as degradation rate of elongation at fracture ( A f ) even from the very short exposure times. Nevertheless, after 2160 h of exposure the A f decrease was stabilized. On the contrary, exposure to 3.5 wt. % NaCl solution showed the slowest degradation rate of elongation at fracture for the very short exposure times and up to 720 h, while essential degradation was noticed for higher exposure times with the property continuously decreasing with increasing exposure time. Severe l ocalized attack was noticed in Harrison’s solution, while corrosion attack in the other two solutions was found to be more homogeneously distributed on the specimen surfaces. © 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: corrosion; tensile; elongation at fracture; aluminum alloy. ECF23 2022 European Conference on Fracture The effect of solution aggressiveness on corrosion-induced mechanical properties degradation of aeronautical aluminum alloy 2198. Christina Margaraita Charalampidou a , Foteini Tazlakidou a , Stavros K. Kourkoulis b and Nikolaos D. Alexopoulos a* a University of the Aegean, School of Engineering, Department of Financial Engineering, Research Unit of Advanced Materials, 821 32 Chios, Greece b National Technical University of Athens, Department of Mechani s, Laboratory of Testing and Materials, 15780 Athens, Greece. Abstract The aim of the present work is to investigate the influence of different corrosive solutions on the corrosion degradation mechanism of Al-Cu-Li (2198) aluminum alloy. Exposure of tensil spec m ns was employed in three different c rrosion solutions, n mely exfo iation corrosion , 3.5 wt. % NaCl and Harriso ’s (diluted version) solution to s udy the corrosi n -induced degradation of mech n cal properties of the alloy. Additionally, macroscopical analysis f he surface de eriorati n was conduct d for several exposure times. Tensile test results showed different c rr sion beh viour or the thre iff ent c rrosive solutions; specim ns ed to Harriso ’ solution exh ibited the h ghest dec ea e as well as degradation ate o lo gation at fract re ( A f ) ev n from the very short exp sure times. Neverth less, after 2160 h of xposure the A f decrease was stabilized. On he contrary, exposure to 3.5 wt. % NaCl solution showed th slowe t deg adation rat of elongation at fracture for the very short exposure times and p 720 h, while essential degradation wa notice fo higher exposur times with the property continuously d crea ing with increasing exposure tim . Severe l oc lized att ck was noticed in Harrison’s solution, w ile c rrosion a tack in the other two solutions was found to be more homogeneously distributed n the specimen surfaces. © 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 u der re ponsibility of Pedro Miguel Guimara s Pires Moreira K ywords: corrosion; tensile; elongation at f acture; aluminu alloy. ECF23 2022 European Conference on Fracture The effect of solution aggressiveness on corrosion-induced mechanical properties degradation of aeronautical aluminum alloy 2198. Christina Margaraita Charalampidou a , Foteini Tazlakidou a , Stavros K. Kourkoulis b and Nikolaos D. Alexopoulos a* a University of the Aegean, School of Engineering, Department of Financial Engineering, Research Unit of Advanced Materials, 821 32 Chios, Greece b National Technical University of Athens, Department of Mechanics, Laboratory of Testing and Materials, 15780 Athens, Greece.

* Corresponding author. Tel.: +302271035464. E-mail address: nalexop@aegean.gr * Corresponding author. Tel.: +302271035464. E-mail ad ress: nalexop@aegean.gr

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 open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of Pedro Miguel Guimara s 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 the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.215