PSI - Issue 54

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

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ScienceDirect

Procedia Structural Integrity 54 (2024) 300–306

© 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 The fatigue behavior of the aluminum alloy AlSi10Mg manufactured by laser powder bed fusion for as-build and residual stress relief conditions with different notch geometries will be studied in this work. The fatigue tests (R=0) are carried out, at ambient temperature and in load control mode. The main results showed that the stress relief heat treatment had a slight positive effect on the fatigue strength, and effectively relieved residual stresses. The presence of different notches decreased the fatigue life when compared to the specimens without notches. Also, a model based on SWT parameter was successfully applied to predict fatigue life. © 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: Fatigue; Aluminium alloy AlSi10Mg; Fatigue Life predictions; LPBF. 1. Introduction In recent years, significant effort in the field of additive manufacturing (AM) have led to improvements in the AM process. The metal additive manufacturing processes, in particular, has enabled the production of complex shapes that are often challenging or unsuitable to achieve using conventional methods (Druzgalski, 2020). International Conference on Structural Integrity 2023 (ICSI 2023) Notch effect on the fatigue behaviour of AlSi10Mg aluminium alloy obtained by additive manufacturing R.F. Fernandes a *, J.S. Jesus a , L.P. Borrego a,b , J.A.M. Ferreira a , J.D. Costa a a University of Coimbra, CEMMPRE, ARISE, Department of Mechanical Engineering P-3004 516 Coimbra, Portugal b Polytechnic University of Coimbra,, Coimbra Institute of Engineering, Department of Mechanical Engineering, Rua Pedro Nunes - Quinta da Nora,, 3030-199 Coimbra, Portugal

* Corresponding author. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail address: uc2020158278@student.uc.pt

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.2024.01.087