Proceedings of 41st Danubia-Adria Symposium Advances in Experimental Mechanics (pp. 53-54)
AUTOR(I) / AUTHOR(S): Radim Halama 
, Michal Kořínek , Jiří Čapek , Karel Trojan , Radim Petkov, Adam Gladiš, Jiří Hajnyš , Nikolaj Ganev
DOI: 10.46793/41DAS2025.053H
UVOD / INTRODUCTION:
Additive manufacturing (AM) technologies, particularly Selective Laser Melting (SLM), enable the production of complex metallic parts directly from powder. SLM, a powder bed fusion process, builds components layer-by-layer using a focused laser source. However, the inherent thermal complexity of the process, characterized by rapid heating and cooling cycles, leads to the formation of significant residual stresses (RS). The magnitude and distribution of these stresses are highly sensitive to process parameters such as laser power, scanning speed, and scanning strategy. Within the context of AM, the most critical of these are macroscopic residual stresses, which can severely impact the structural integrity and fatigue life of as-built
components.
This work investigates the reduction of these stresses by applying the yield surface tracking technique, an approach traditionally used for studying plastic anisotropy, implemented on an axial-torsional testing machine.
KLJUČNE REČI / KEYWORDS:
PROJEKAT / ACKNOWLEDGEMENT:
The work on this paper was funded by the Czech Science Foundation grant 25-15579S.
LITERATURA / REFERENCES:
- Bartlett, J. L., Li, X. An overview of residual stresses in metal powder bed fusion. Addit Manuf, 2019, 27, 131–149.
- Kořínek, M., Halama, R., Hajnyš, J., Střílka, D. Determination of the Initial Anisotropy of Inconel 718 manufactured by Additive Manufacturing. In Proceedings of 61st International Conference on Experimental Stress Analysis, Košice, 6-8 June, 2023; M. Hagara, M., Huňady, R., Eds.; TU Košice, Košice, 2024; pp. 102–106.
- Marchese, G., Atzeni, E., Salmi, A., Biamino, S. Microstructure and residual stress evolution of laser powder bed fused Inconel 718 under heat treatments. J Mater Eng Perform, 2021, 30, 565–574.