PSI - Issue 54

R.F. Fernandes et al. / Procedia Structural Integrity 54 (2024) 300–306 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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• In semicircular notch (D), the application of the heat treatment indicates greater influence on higher fatigue life, while in hole notch (O) it had a greater impact on lower fatigue life. This aspect requires further examination with fracture surface and defects analysis; • The effective homogenization and stabilization of the residual stresses induced by heat treatment contributed to the improved fatigue strength; • The modified version of SWT parameter used to predict the fatigue life showed strong correlation between the predict values and the experimental results. Acknowledgements This study was funded by national funds through FCT – Fundação para a Ciência e a Tecnologia – , under the project UIDB/00285/2020 and LA/P/0112/2020. Rui Fernandes is also grateful to the FCT for the PhD grant with reference 2022.14234.BD. References DIN 1706, 2021. Aluminium and aluminium alloys - Castings - Chemical composition and mechanical properties. Druzgalski, C. L., Ashby, A., Guss, G., King, W. E., Roehling, T. T., & Matthews, M. J. (2020). Process optimization of complex geometries using feed forward control for laser powder bed fusion additive manufacturing. Additive Manufacturing, 34, 101169. Fernandes, R. F., Jesus, J. S., Branco, R., Borrego, L. P., Costa, J. D., & Ferreira, J. A. M., 2022. Influence of post-processing heat treatment on the cyclic deformation behaviour of AlSi10Mg aluminium alloy subjected to laser powder bed fusion. International Journal of Fatigue, 164, 107157. Fiocchi, J., Tuissi, A., Biffi, C. A., 2021. Heat treatment of aluminium alloys produced by laser powder bed fusion: A review. Materials and Design, 204, 109651. Lehner, P., Blinn, B., & Beck, T., 2023. Improving the Defect Tolerance and Fatigue Strength of AM AlSi10Mg. Advanced Engineering Materials, 25(15), 2201855. Maleki, E., Bagherifard, S., Unal, O., Bandini, M., & Guagliano, M., 2022. On the effects of laser shock peening on fatigue behavior of V-notched AlSi10Mg manufactured by laser powder bed fusion. International Journal of Fatigue, 163, 107035. Mfusi, B. J., Mathe, N. R., Tshabalala, L. C., & Popoola, P. A. I., 2019. The effect of stress relief on the mechanical and fatigue properties of additively manufactured AlSi10Mg parts. Metals, 9(11), 1 – 14. Nicoletto, G., 2020. Influence of Rough As-Built Surfaces on Smooth and Notched Fatigue Behavior of L-PBF AlSi10Mg. Additive Manufacturing, 34, 101251. Kumar, S. P., Elangovan, S., Mohanraj, R., & Ramakrishna, J. R., 2021. Review on the evolution and technology of State-of-the-Art metal additive manufacturing processes. Materials Today: Proceedings, 46, 7907 – 7920. Růžičková, L., Sobotová, J., Beránek, L., Pelikán, L., & Šimota, J. , 2022. Influence of Stress Relief Annealing Parameters on Mechanical Properties and Decomposition of Eutectic Si Network of L-PBF Additive Manufactured Alloy AlSi10Mg. Metals, 12(9), 1497. Shakil, S. I., Hadadzadeh, A., Shalchi Amirkhiz, B., Pirgazi, H., Mohammadi, M., & Haghshenas, M., 2021. Additive manufactured versus cast AlSi10Mg alloy: Microstructure and micromechanics. Results in Materials, 10, 100178. Smith K. N., Watson P, & Topper Th., 1970. Stress- strain function for the fatigue of metals. J Mater, 5(4), 767 – 778. Xu, S., Lu, Q., Ou, Y., Zhang, P., Yan, H., Sun, T., Ma, S., Luo, Z., & Tian, Y., 2023. Effect of Heat Treatment on the Anisotropic Mechanical Properties of AlSi10Mg Fabricated by Selective Laser Melting. Journal of Materials Engineering and Performance, 1 – 14. Yan, Q., Song, B., & Shi, Y., 2019. Comparative study of performance comparison of AlSi10Mg alloy prepared by selective laser melting and casting. Journal of Materials Science and Technology, 41, 199 – 208. Yang, K. V., Rometsch, P., Jarvis, T., Rao, J., Cao, S., Davies, C., & Wu, X., 2018. Porosity formation mechanisms and fatigue response in Al-Si Mg alloys made by selective laser melting. Materials Science and Engineering A, 712, 166 – 174. Zhang, C., Zhu, H., Liao, H., Cheng, Y., Hu, Z., & Zeng, X., 2018. Effect of heat treatments on fatigue property of selective laser melting AlSi10Mg. International Journal of Fatigue, 116, 513 – 522.