Fatigue behaviour of additively manufactured Ti-6Al-4V alloy: The role of defects on scatter and statistical size effect
Article dans une revue avec comité de lecture
This work is focused on the influence of defects on scatter and statistical size effect of Ti-6Al-4V alloy fabricated by the SLM process. A vast fatigue test campaign has been undertaken, for two surface conditions (as-built and machined surfaces) and two specimen geometries with different highly loaded volume sizes. It was shown, for machined specimens, that a large variety of crack initiation mechanisms is the principal origin of the fatigue scatter. Regarding the size effect, the change of the mechanism is the first order factor that governs the size effect. For as-built specimens, these effects are much less pronounced.
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Effects Of The Surface Roughness And The Porosity On The High Cycle Fatigue Behaviour Of Ti-6al-4v Alloy Obtained By Additive Manufacturing Process Article dans une revue avec comité de lectureLE, Viet-Duc; PESSARD, Etienne; MOREL, Franck; PRIGENT, Serge (Journal of the Engineering Integrity Society, 2022-09)This work focuses on the influence of defects, including porosity and surface roughness, on the high cycle fatigue behaviour of the Ti-6Al-4V titanium alloy fabricated by the Laser Power Bed Fusion (LPBF) Additive Manufacturing ...
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