PSI - Issue 81

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ScienceDirect

Procedia Structural Integrity 81 (2026) 305–309

© 2026 The Authors. Copy from the contract: 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 DMDP 2025 organizers Keywords: mechanical characteristics; aluminium alloys; jump-like deformation; deformation diagram 1. Introduction AMg6 aluminum-magnesium alloy competes effectively with steel and titanium alloys because of its light weight, high strength, good corrosion resistance, and excellent workability. Its use is widespread in aerospace and shipbuilding for critical load-bearing structures and components. Consequently, studying the mechanical properties of AMg6, particularly its deformation diagrams, is essential. Several structural materials exhibit discontinuous deformation growth, including the AMg6 aluminum alloy which is shown in the researches of Strizhalo et al. (1999), Vorobiov et al. (2013), Hryhorova et al. (2020). Previous studies by Yasniy and Halushchak (1998), Stryzhalo (1978) confirmed these jump-like increments occur during plastic deformation of AMg6. Research by Yasniy and Hlado (2002) suggests a possible correlation between this behavior and the size and distribution of dispersed phases within the material, where the total magnitude of this jump-like deformation significantly exceeds other types of strain. The total deformation of jumps exceeds all other deformation by 5 – 10 times. The ability to accurately model and predict this behavior under static and time-varying loads is crucial for enhancing the reliability of structural calculations using AMg6 alloy. Microstructure studies reveal dispersoids within the matrix which are elongated in the direction of rolling that fracture during deformation as it is revealed in the Abstract This research involves a detailed study of the deformation parameters of the AMg6 alloy in uniaxial tension, with particular attention to the material's strengthening regions. A specific dependency was identified that quantifies the change in deformation magnitude immediately following the jump-like increments caused by the fracture of the dispersed phases of the alloy. The paper introduces a practical method for incorporating these observed patterns into a predictive model of the general deformation behavior of AMg6 alloy, using a diagram of internal dispersed particle distribution. VIII International Conference “In - service Damage of Materials: Diagnostics and Prediction“ (DMDP 2025) Deformation patterns of AMg6 alloy under conditions of uniaxial tension in the areas of jump strain hardening Serhiy Fedak a, *, Oleh Yasniy a , Sofia Fedak a , Lubov Tsymbaliuk a , Ivan Lohush b a TernopilIvan Puluj National Technical University, Ruska str. 56, Ternopil, 46001, Ukraine b Separated Subdivision of National University of Life and Environmental Sciences of Ukraine “Berezhany Agrotechnical Institute”47501, 20 Academichna Str., Berezhany, Ternopil region, Ukraine

* Corresponding author. Tel.: +38 067-723-1807 E-mail address: srigfd@gmail.com

2452-3216 © 2026 The Authors. Copy from the contract: 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 DMDP 2025 organizers 10.1016/j.prostr.2026.03.053