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Application of mechanical surface finishing processes for roughness reduction and fatigue improvement of additively manufactured Ti-6Al-4V parts


•High surface roughness Ra > 15 μm of ‘as built’ AM Ti64 surfaces.•Substantially low fatigue performance of AM as built Ti64 (∼300 MPa).•Decrease of the initial surface roughness by various mechanical surface treatments.•Significant increase of fatigue performance due to roughness decrease (400–775 MPa).