PSI - Issue 46

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 46 (2023) 42–48

© 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 ICSID 2021 Organizers Abstract Numerous factors affect the quality of selective laser melted components, however based on previous studies it was found that scanning speed and laser power have the greatest influence of all process parameters. Moreover, at different energy densities during selective laser melting (SLM) of Ti6Al4V alloy, different mechanical properties and product quality can be achieved. This phenomenon generates high interest in customizing mechanical properties of SLM-ed components. In this study, the range of process parameters is selected based on previous research findings to produce test specimens with the lowest possible porosity. In this way, the negative effect of high porosity values on monotonic and cyclic elastoplastic behavior can be minimized. The aim of this research in its early stage is to investigate the influence of laser power and scanning speed on the surface roughness and porosity of SLM-ed Ti6Al4V alloy. Based on top surface roughness measurements on the cubic specimens, it was found that average surface roughness increases with the scanning speed and reaches its maximum value at scanning speed of 1500 mm/s at all observed laser power levels. Variability of the average surface roughness data and standard deviation reaches its minimum value at the scanning speed of 1000 mm/s for all laser power levels. Nearly full material density can be achieved using the laser power of 250 W and scanning speed of 1250 mm/s. The results of this research study can be useful in the early stage of selecting appropriate SLM process parameters to achieve desired product quality in engineering applications. © 2021 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 ICSID 2021 Organizers. Keywords: Ti6Al4V alloy; selective laser melting; process parameters; mechanical properties 5th International Conference on Structural Integrity and Durability The effect of process parameters on mechanical behavior of selective laser melted Ti6Al4V alloy David Liović a , Marina Franulović a, *, Dražan Kozak b a University of Rijeka, Faculty of Engineering, Vukovarska 58, Rijeka 51000, Croatia b University of Slavonski Brod, Mechanical Engineer ing Faculty in Slavonski Brod, Trg I.B. Mažurani ć 2, Slavonski Brod 35000, Croatia

* Corresponding author. Tel.: +385 (0) 51 651 533 E-mail address: marina.franulovic@riteh.hr

2452-3216 © 2021 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 ICSID 2021 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 ICSID 2021 Organizers 10.1016/j.prostr.2023.06.008