PSI - Issue 54

Ivana Zetková et al. / Procedia Structural Integrity 54 (2024) 256–263 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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The use of the SP_P120 parameter set resulted in a significant reduction of residual stresses. The curves ranged approximately from -100 to +60 MPa in the area of 0.15 – 0.8 mm below the surface. The difference between the SP and SP_P120 parameter sets was also analyzed using the X-ray diffraction method. The results confirm the potential for reducing RS by adjusting the building platform preheating to 120°C in this experiment. The results of the verification of the mechanical properties of both these sets and their practical use will be published in subsequent papers. Acknowledgements The paper has originated in the framework of the project co-fund action M-Era.Net, project DePriSS, [grant number 8163], thanks to the financial support of the Technology Agency of the Czech Republic, [grant number TH75020003]. References Bartlett J. L. and Li X., “An overview of residual stresses in metal powder bed fusion,” Additive Manufacturing, 27, pp. 131 -149 (2019). Schneller W., Leitner M., Pomberger S., Springer S., Beter F. and Grün F., “Effect of post treatment on the microstructure, surface roughness and residual stress regarding the fatigue strength of selectively laser melted AlSi10Mg structures,” Journal of Manufacturing and Materials Processing, 3(4), 89 (2019). EOS GmbH - Electro Optical Systems, “EOS MaragingSteel MS1 – Material data sheet,” Available from https://www.eos.info/03_system-related assets/material-related-contents/metal-materials-and-examples/metal-material-datasheet/werkzeugstahl_ms1_cx/ms1/ms-ms1 m290_material_data_sheet_06-22_en.pdf Accessed: 2023-05-15. D. Wang, Y. Yang, Z. Yi, a X. Su, „Research on the fabricating quality optimization of the overhanging surface in SLM process ", Int. J. Adv. Manuf. Technol., roč. 65, č. 9, s. 1471 – 1484, dub. 2013, doi: 10.1007/s00170-012-4271-4. L. Cheng a A. To, „Part -scale build orientation optimization for minimizing residual stress and support volume for metal additive manufacturing: Theory and experimental validation", Comput.- Aided Des., roč. 113, s. 1 – 23, srp. 2019, doi: 10.1016/j.cad.2019.03.004. T. Mukherjee, W. Zhang, a T. DebRoy, „An improved prediction of residual stresses and distortion in additive manufacturing", Comput. Mater. Sci., roč. 126, s. 360 – 372, led. 2017, doi: 10.1016/j.commatsci.2016.10.003. P. Promoppatum a S.- C. Yao, „Influence of scanning length and energy input on residual stress reduction in metal additive manufacturing: Numerical and experimental studies", J. Manuf. Process., roč. 49, s. 247 – 259, led. 2020, doi: 10.1016/j.jmapro.2019.11.020. J. P. Kruth, L. Froyen, J. Van Vaerenbergh, P. Mercelis, M. Rombouts, a B. Lauwers, „Selective laser melting of iron -based powder", J. Mater. Process. Technol., roč. 149, č. 1, s. 616 – 622, čer. 2004, doi: 10.1016/j.jmatprotec.2003.11.051. Y. Lu et al., „Study on the microstructure, mechanical property and residual stress of SLM Inconel-718 alloy manufactured by differing island scanning strategy", Opt. Laser Technol., roč. 75, s. 197 – 206, pro. 2015, doi: 10.1016/j.optlastec.2015.07.009. „Effects of annealing on the structure and mechanical properties of FeCoCrNi high -entropy alloy fabricated via selective laser melting - ScienceDirect". Available from: https://www.sciencedirect.com/science/article/pii/S2214860419318263?via%3Dihub R. J. Wi lliams, F. Vecchiato, J. Kelleher, M. R. Wenman, P. A. Hooper, a C. M. Davies, „Effects of heat treatment on residual stresse s in the laser powder bed fusion of 316L stainless steel: Finite element predictions and neutron diffraction measurements", J. Manu f. Process., roč. 57, s. 641 – 653, zář. 2020, doi: 10.1016/j.jmapro.2020.07.023. L. M. Sochalski- Kolbus et al., „Comparison of Residual Stresses in Inconel 718 Simple Parts Made by Electron Beam Melting and Direct Laser Metal Sintering", Metall. Mater. Tran s. A, roč. 46, č. 3, s. 1419 – 1432, bře. 2015, doi: 10.1007/s11661 -014-2722-2. K.Trojan, I. Zetková, J. Čapek, P . Thurnvald, N. Ganev, M. Kepka jr. Optimization of 3D Printing Parameters to Minimize Residual Stresses in Maraging Steel, EAN 2023, 61st conference on experimental stress analysis