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Acknowledgements The authors thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for its financial support within the research projects “Identification and modeling of damage mechanisms in Al -Si-Mg cast alloys dur ing HCF and VHCF” (No. 282318703) and “Mechanism -based investigation of additively-manufactured aluminum matrix composites (AMC) for enhanced mechanical strength” (No. 425479688). Further thanks to the Institute of Materials Design and Structural Integrity of the University of Applied Sciences Osnabrueck (Germany) and the Fraunhofer Research Institution for Additive Manufacturing Technologies (IAPT, Hamburg, Germany) for the supply of specimen manufacturing within excellent scientific cooperations. References Davis, J.R., 2001. Alloying: Understanding the basics. ASM International, 351–416. Fischer, C., Schweizer, C.; 2020. Lifetime assessment of the process-dependent material properties of additive manufactured AlSi10Mg under low cycle fatigue loading. MATEC Web of Conferences 326, 7003, 1–10. Hernandez, F.C., Ramírez, J.M., Mackay, R., 2017. Al-Si Alloys: Automotive, aeronautical, and aerospace applications. Springer International Publishing, Cham, Switzerland. Menge, M., Rath, D., Zeuner, T.; 2005. New chassis components as aluminum castings. ATZ Worldwide 107, 9–10. Murakami, Y., 2012. Material defects as the basis of fatigue design. International Journal of Fatigue 41, 2–10. Noguchi, H., Morishige, K., Fujii, T., Kawazoe, T., Hamada, S., 2007. Proposal of method for estimation stress intensity factor range on small crack for light metals. Proceedings of the 56th JSMS Annual Meetings, 137–138. Radaj, D., Vormwald, M., 2007. Ermüdungsfestigkeit – Grundlagen für Ingenieure (engl. Fatigue strength – basics for engineers), Springer Berlin. Schijve, J., 1981. Some formulas for the crack opening stress level. Engineering Fracture Mechanics 14 (3), 461–465. Shiozawa, K., Lu, L., 2008. Effect of non-metallic inclusion size and residual stresses on gigacycle fatigue properties in high strength steel. 11th International Fatigue Congress 44-46, 33–42. Siddique, S., Imran, M., Walther, F., 2017. Very high cycle fatigue and fatigue crack propagation behavior of selective laser melted AlSi12 alloy. International Journal of Fatigue 94 (2), 246–254. Tenkamp, J., Stern, F., Walther, F., 2022. Uniform fatigue damage tolerance assessment for additively manufactured and cast Al-Si alloys: An elastic-plastic fracture mechanical approach. Additive Manufacturing Letters 3, 100054, 1–8. Tenkamp, J., Stammkoetter, S., Merghany, M., Walther, F., 2022. Uniform fatigue damage tolerance assessment for additively manufactured and cast Al-Si alloys: Size and mean stress effects. Additive Manufacturing Letters 3, 100076, 1–7. Wang, Q., Apelian, D., Lados, D., 2001. Fatigue behavior of A356-T6 aluminium cast alloys. Part I. Effect of casting defects. Journal of Light Metals 1, 73–84. Warmuzek, M., 2004. Aluminum-silicon casting alloys - Atlas of microfractographs. ASM International.