Improved fatigue strength of additively manufactured Ti6Al4V by surface post processing

• Published in: International journal of fatigue Vol. 134; pp. 105497 - 12
• Main Authors: Kahlin, M., Ansell, H., Basu, D., Kerwin, A., Newton, L., Smith, B., Moverare, J.J.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.05.2020; Elsevier BV
• Subjects: Additive manufacturing; Electron beams; Fatigue; Fatigue strength; Heat treating; Laser beams; Laser shock processing; Lasers; Materials fatigue; Post processes; Powder beds; Rapid prototyping; Shot peening; Surface roughness; Ti6Al4V; Titanium base alloys; Fatigue; Surface roughness; Additive manufacturing; Ti6Al4V; Post processes

•Surface post processes are needed for PBF Ti6Al4V to achieve high fatigue strength.•Centrifugal finishing of L-PBF Ti6Al4V gave the highest fatigue strength.•Laser polished material had reduced fatigue strength although low surface roughness. A major challenge for additively manufactured structural...