Kiarash Jamali Dogahe, Tamás Csanádi, Yanling Schneider, Chensheng Xu, Vinzenz Guski, Anindita Dhar Swarna, Jan Dusza, Siegfried Schmauder, Zeljko Bozic, Mahmoud Pezeshki, Mohammad Ridzwan Bin Abd Rahim
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Multicale Study of the Fatigue Life of AlSi10Mg Material Produced by Laser Powder Bed Fusion (LPBF) Method: Experimental and Computational
This study investigates the fatigue life of AlSi10Mg alloy produced by laser powder bed fusion (LPBF) using experimental and multiscale modeling methods. A micromodel developed based on EBSD and SEM data simulates fatigue microcrack nucleation with the Tanaka–Mura model and FEM. The effects of the alloys heterogeneous microstructure, including SiC particles, on fatigue crack initiation are examined. Micropillar tests and high-resolution SEM analyses study slip system behavior and plastic deformation. Long crack propagation is analyzed using the NASGRO equation, with total cycles till failure calculated for each stress amplitude. The fatigue life results, represented in an
curve, show good agreement between computational and experimental data. Microscopic and macroscopic features like second phases, grain sizes, orientations, and macropores significantly influence the fatigue life of LPBF materials.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
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