PSI - Issue 77

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2026) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2026) 000 – 000

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

ScienceDirect

Procedia Structural Integrity 77 (2026) 292–299

© 2026 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 ICSI organizers Abstract This study investigates the effect of time and temperature on the heat treatment of 6082 Al-Mg-Si alloy. Solubilization, quenching, and artificial aging were performed under parameter combinations defined using the Taguchi method. Mechanical testing supported the development of a multiple linear regression model, which identified aging temperature as the most significant factor influencing ultimate tensile strength and yield strength. High aging temperatures promoted coarse precipitate formation and reduced strength, while lower temperatures minimized this effect and maintained or improved mechanical performance. The results demonstrate the potential of combining statistical design with predictive modeling to optimize heat treatment parameters and enhance alloy performance for industrial applications. © 2026 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 ICSI organizers Keywords: Al Mg Si alloy; heat treatment; Taguchi optimization; regression model. 1. Introducion Alloy 6082 has moderate mechanical strengths, high corrosion resistance, and excellent weldability which makes it particularly attractive for engineering applications. It is widely employed in sectors such as automotive, electrical, railway, and precision parts that use this aluminum alloy (Aginagalde et al., 2009). Their high specific strength and good fatigue resistance make them ideal for use in lightweight and structural components (Barbosa et al., 2023). Abstract This study investigates the effect of time and temperature on the heat treatment of 6082 Al-Mg-Si alloy. Solubilization, quenching, and artificial aging were performed under parameter combinations defined using the Taguchi method. Mechanical testing supported the development of a multiple linear regression model, which identified aging temperature as the most significant factor influencing ultimate tensile strength and yield strength. High aging temperatures promoted coarse precipitate formation and reduced strength, while lower temperatures minimized this effect and maintained or improved mechanical performance. The results demonstrate the potential of combining statistical design with predictive modeling to optimize heat treatment parameters and enhance alloy performance for industrial applications. Keywords: Al Mg Si alloy; heat treatment; Taguchi optimization; regression model. 1. Introducion Alloy 6082 has moderate mechanical strengths, high corrosion resistance, and excellent weldability which makes it particularly attractive for engineering applications. It is widely employed in sectors such as automotive, electrical, railway, and precision parts that use this aluminum alloy (Aginagalde et al., 2009). Their high specific strength and good fatigue resistance make them ideal for use in lightweight and structural components (Barbosa et al., 2023). International Conference on Structural Integrity Influence of Time and Temperature Variables on the Heat Treatment of an AL-MG SI Alloy João E. Ribeiro a* , Hernani Lopes c , João Rocha b a CIMO, LA SusTEC, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal b DEM-ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal c GICoS, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal International Conference on Structural Integrity Influence of Time and Temperature Variables on the Heat Treatment of an AL-MG SI Alloy João E. Ribeiro a* , Hernani Lopes c , João Rocha b a CIMO, LA SusTEC, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal b DEM-ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal c GICoS, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal

* Corresponding author. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail address: jribeiro@ipb.pt * Corresponding author. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail address: jribeiro@ipb.pt

2452-3216 © 2026 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 ICSI organizers 2452-3216 © 2026 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 ICSI organizers

2452-3216 © 2026 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 ICSI organizers 10.1016/j.prostr.2026.01.038