•For SLM processed samples containing internal channels crack initiation is observed at channel surfaces and bulk porosity•Despite distinct crack initiation sites fatigue life data are characterized by a low degree of scatter for a given geometry•Fatigue lives of the different geometries tested are clearly affected by the ligament size•A fracture mechanics based approach is able to capture differences in fatigue lives of the sample geometries considered•Based on the findings presented the superior impact of crack growth life on the overall fatigue life is deduced
Materials & design – Elsevier
Published: Apr 5, 2018
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