On Defect Minimization Caused by Oxide Phase Formation in Laser Powder Bed Fusion

The article is devoted to the compressive review of defects observed in products machinery usage made mainly anti-corrosion steels martensite-austenite group, difficult process materials such as pure titanium, nickel, and their alloys, super high entropy alloys triple fusions produced by laser additive manufacturing, particularly powder bed fusion. Studies were conducted on structural improve quality context residual stress elimination, porosity reduction, surface roughness improvement. Electrophysical electrochemical treatment methods removing oxide phase formation during melting remelting deposed tracks layers are considered (such ultrasound, plasma, laser, spark treatment, induction cleaning, redox annealing, gas–flame, plasma–beam, plasma–spark treatment). Types pollution (physical chemical) cleaning methods, plasma-based for removing, classified. A comparison low- high-pressure plasma sources provided. Special attention focused atmospheric based a dielectric barrier other discharges part production setup that presents critical value novelty transition sixth technology paradigm associated with Kondratieff’s waves.