PSI - Issue 50

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

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

Procedia Structural Integrity 50 (2023) 170–177

© 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 MRDMS 2022 organizers Abstract In this work, complex studies of laser welding using filler aluminum wire of the Al-Mg-Mn system and post weld heat treatment were carried out in order to increase the level of mechanical properties of alloys of the Al-Mg-Li system. High-quality weld joints were obtained. The us e of synchrotron radiation with a spatial resolution of 100 μm made it possible to scan the weld and the original alloy in detail. Subsequent heat treatment of the weld made it possible to form the strengthening phase δ'(Al3Li ) and improve the mechanical properties. Energy conditions for obtaining a high-quality weld with wire: heat input ≈ 90.9 J/mm, energy per unit volume of the molten material ≈ 28.94 J/mm3. © 202 3 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 MRDMS 2022 organizers . Keywords: laser welding; Al-Mg-Li alloy; post heat treatment; phase composition; synchrotron radiation 1. Introduction Traditional aluminum alloys of the Al-Mg and Al-Cu-Mg systems are widely use aerospace technologies Starke and Staley (1996). At the same time, the development of the aviation and aerospace industry is associated with the use of new modern high-strength aluminum alloys in structures and products. To date, high-strength aluminum lithium alloys that have a reduced density compared to traditional aluminum alloys due to the use of lithium have Effect of filler Al-Mg-Mn wire and post-heat treatment on the structural-phase state and mechanical properties of laser welding of Al-Mg-Li alloy Aleksandr Malikov a, * a Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Institutskaja 4/1 Novosibirsk, 630090, Russia Abstract In this work, complex studies of laser welding using filler aluminum wire of the Al-Mg-Mn system and post weld heat treatment were carried out in order to increase the level of mechanical properties of alloys of the Al-Mg-Li system. High-quality weld joints were obtained. The us e of synchrotron radiation with a spatial resolution of 100 μm made it possible to scan the weld and the original alloy in detail. Subsequent heat treatment of the weld made it possible to form the strengthening phase δ'(Al3Li ) and improve the mechanical properties. Energy conditions for obtaining a high-quality weld with wire: heat input ≈ 90.9 J/mm, energy per unit volume of the molten material ≈ 28.94 J/mm3. © 202 3 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 MRDMS 2022 organizers . Keywords: laser welding; Al-Mg-Li alloy; post heat treatment; phase composition; synchrotron radiation 1. Introduction Traditional aluminum alloys of the Al-Mg and Al-Cu-Mg systems are widely use aerospace technologies Starke and Staley (1996). At the same time, the development of the aviation and aerospace industry is associated with the use of new modern high-strength aluminum alloys in structures and products. To date, high-strength aluminum lithium alloys that have a reduced density compared to traditional aluminum alloys due to the use of lithium have 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) Effect of filler Al-Mg-Mn wire and post-heat treatment on the structural-phase state and mechanical properties of laser welding of Al-Mg-Li alloy Aleksandr Malikov a, * a Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Institutskaja 4/1 Novosibirsk, 630090, Russia 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022)

* Corresponding author. Tel.: +7-383-330-7342. E-mail address: smalik@ngs.ru * Corresponding author. Tel.: +7-383-330-7342. E-mail address: smalik@ngs.ru

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 MRDMS 2022 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 MRDMS 2022 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 MRDMS 2022 organizers 10.1016/j.prostr.2023.10.038