Rapid accomplishment of strength/ductility synergy for additively manufactured Ti-6Al-4V facilitated by machine learning

•Machine learning is introduced to assist the process control of laser powder bed fusion technology.•The α' martensitic microstructure obtained excellent strength - ductility synergy.•Hatch spacing plays a crucial role in dictating ductility for a given linear energy density.•Weakening variant selection is an effective way to optimize ductility for α' martensitic microstructure.