Fatigue and fracture behavior of laser powder bed fusion (LPBF) processed aluminum alloy (AlSi10Mg) was evaluated in this investigation. High cycle fatigue and fracture characteristics were evaluated as a function of as-built specimen orientations and energy densities, used during processing. Fatigue tests were carried out on a rotating beam fatigue tester. Fracture characteristics were determined using SEM. Results indicate that aluminum alloy produced at 90° build angle orientation exhibited higher fatigue strength/life in comparison to the rest of build angle orientations. Higher fatigue strength and tensile toughness were observed for the specimens produced with relatively higher energy density at 49.9 J/mm3 . SEM investigations revealed ductile fracture surface features for specimens produced with higher energy density.
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Author Name: Luke SUTTEY, Vadiraja SUDHAKAR
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Keywords: AlSi10Mg alloy, laser additive manufacturing, high cycle fatigue, S-N curves, fracture
ISSN: 2537-4338
EISSN: 2537-4346
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