); 2 UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, [PERSON] 1, 1959-007 Lisbon, Portugal 2  
[PERSON]  
1 CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua [PERSON], 3030-788 Coimbra, Portugal; [EMAIL_ADDRESS] (M.A. ); [EMAIL_ADDRESS] (R.F. );  [EMAIL_ADDRESS] (L.B. ); [EMAIL_ADDRESS] (R.B. ); [EMAIL_ADDRESS] (J.d.C. ); 2 UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, [PERSON] 1, 1959-007 Lisbon, Portugal 2  
[PERSON]  
1 CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, [PERSON], 3030-788 Coimbra, Portugal; [EMAIL_ADDRESS] (M.A. ); [EMAIL_ADDRESS] (R.F. );  [EMAIL_ADDRESS] (L.B. ); [EMAIL_ADDRESS] (R.B. ); [EMAIL_ADDRESS] (J.d.C. ); 2 UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, [PERSON] 1, 1959-007 Lisbon, Portugal 2  
[PERSON]  
1 CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, [PERSON], 3030-788 Coimbra, Portugal; [EMAIL_ADDRESS] (M.A. ); [EMAIL_ADDRESS] (R.F. );  [EMAIL_ADDRESS] (L.B. ); [EMAIL_ADDRESS] (R.B. ); [EMAIL_ADDRESS] (R.B. ); [EMAIL_ADDRESS] (J.d.C. ); 2 UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, [PERSON] 1, 1959-007 Lisbon, Portugal 2  
[PERSON]  
1 CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, [PERSON], 3030-788 Coimbra, Portugal; [EMAIL_ADDRESS] (M.A. ); [EMAIL_ADDRESS] (R.F. );  [EMAIL_ADDRESS] (L.B. ); [EMAIL_ADDRESS] (R.B. ); [EMAIL_ADDRESS] (J.d.C. ); 2 UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, [PERSON] 1, 1959-007 Lisbon, Portugal 2  
[PERSON]  
1 CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua [PERSON], 3030-788 Coimbra, Portugal; [EMAIL_ADDRESS] (M.A. ); [EMAIL_ADDRESS] (R.F. );  borrego@issec. In the as-built condition, AlSi10 Mg has a hierarchical microstructure where large Al grains present a fine cellular-dendritic solidification structure with submicron-sized primary Al cells and an intercellular Si network [3]. The microstructure of the AlSi10 Mg alloy produced through L-PBF is distinguished by features arising from the rapid solidification and localized heating associated with the process. The high cooling rates result in a refined microstructure characterized by a fine distribution of silicon particles within the aluminum matrix. Typically, the alloy exhibits a cellular or dendritic structure, where aluminum-rich cells are surrounded by silicon-enriched boundaries. This rapid solidification also leads to a supersaturation of silicon in the aluminum matrix, which influences the material's mechanical properties. Furthermore, the process introduces residual stresses and specific crystallographic textures due to the localized heating and cooling cycles. While the as-built microstructure enhances the mechanical performance of AlSi10 Mg, providing higher strength and ductility compared to cast alloys, it often requires post-processing, such as heat treatments, to alleviate residual stresses and homogenize the silicon particle distribution, ensuring optimal performance [4; 5; 6]. The T6 treatment is frequently investigated for this alloy involving a solution treatment followed by artificial aging. This process causes the reorganization of the Si phase, which changes from a nanoscale precipitate arranged in a cellular network to coarse Si particles several microns in size. As T6 has often been found to be detrimental to strength, other authors have investigated alternative heat treatment strategies such as direct aging/T5 [7; 8]. Research has demonstrated that AlSi10 Mg parts produced by L-PBF can exhibit variations in mechanical behavior based on processing parameters. Fatigue failure, especially in high-cycle regimes, is influenced by factors such as as-build orientation, surface defects, and internal porosity.