Effect of post-processing methods on the surface quality of Ti6Al4V fabricated by laser powder bed fusion

Ti6Al4V is widely used in aerospace and medical applications, where high demands on dimensional accuracy surface quality require the application of post-processing to achieve optimal performance. However, parts fabricated by LPBF inferior due inherent defects LPBF. Therefore, it important investigate effect Ti6A14V In this work, methods (i.e., sandblasting, electrolytic polishing, chemical abrasive flow polishing) laser powder bed fusion (LPBF) additive manufacturing was investigated. The changes roughness morphology 45° inclined square curved pipe samples processed with were observed, weight elemental also analyzed. result reveals that polishing are all effective improving sandblasting mainly caused sharp-edged grit driven high-speed airflow, resulting lowest least influence weight, but may contaminate residual brown corundum. Electrolytic improvement through different corrosion patterns without changing composition. smoothness best, while loss rate sample most at about 7.47%. Abrasive presents a remarkable internal extrusion scratching, deformation, micro-cutting effects surface. findings can provide engineering references for precision further promote applications parts.