PSI - Issue 35

Varvara Romanova et al. / Procedia Structural Integrity 35 (2022) 196–202 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 4. The equivalent plastic strain distributions under 5% tension for the models loaded parallel (a) and perpendicular (b) to the build direction; deformation-induced surface roughness pattern for the models loaded parallel (c) and perpendicular (d) to the build direction Conclusion The inhomogeneous grain-scale mechanical response of an AlSi10Mg alloy fabricated by SLM has been numerically investigated. Three-dimensional crystal plasticity finite-element calculations have been performed for the model microstructure simulated by a physically-based cellular automata finite difference method. The von Mises stress and plastic strain fields were analyzed for the models loaded parallel and perpendicular to the build direction. The analysis has revealed a significant inhomogeneity at the grain scale. It was noticed that the grains characterized by a cube texture in the central parts of the melt pools had stronger ability to deform plastically compared to the fine randomly oriented grains in the hatch overlap zones. The statistical estimations of the equivalent stress distributions have shown that the majority of grains in the model loaded perpendicular to the build direction experience higher stresses in comparison with both the average stress value and maximum stress value in the other model. Acknowledgements The funding provided by the German Research Foundation (Deutsche Forschungsgemeinschaft) [grant number PL 584/4-1] and the Government of the Russian Federation through the research assignment for ISPMS SB RAS (№FWRW -2021-/0002/) are acknowledged. References Carroll, B.E., Palmer, T.A., Beese, A.M., 2015. Anisotropic tensile behavior of Ti – 6Al – 4V components fabricated with directed energy deposition additive manufacturing. Acta Materialia 87, 309 – 320. Ch, S.R., Raja, A., Nadig, P., Jayaganthan, R., Vasa, N.J., 2019. Influence of working environment and built orientation on the tensile properties of selective laser melted AlSi10Mg alloy. Materials Science and Engineering: A 750, 141 – 151. Ferro, P., Meneghello, R., Razavi, S.M.J., Berto, F., Savio, G., 2020. Porosity Inducing Process Parameters in Selective Laser MeltedAlSi10Mg Aluminium Alloy. Physical Mesomechanics 23, 256 – 262.