Investigating the Melt-Pool Temperature Evolution in Laser-Powder Bed Fusion by Means of Infra-Red Light: A Review

Recent decades seen the success of Additive Manufacturing (AM) in many industrial applications including aerospace, biomedical, automotive, and tooling. In manufacturing metallic parts, AM technology has ability to produce parts with complex geometries which are difficult or impossible using conventional fabrication methods, such as machining casting. Another benefit is employment metal alloys machine. Alloys titanium, nickel-titanium, stainless steel have a wide range particularly aerospace biomedical industry. Selective Laser Melting (SLM), also known Powder Bed Fusion (L-PBF) type used for 3D printing alloy parts. The major drawback L-PBF anisotropic properties produced From L-PBF, these anisotropies exist due instant melting re-solidification powder, ultra-high cooling rates variant temperature levels across build layers within single layer itself. This article explores essential role melt-pool gradients that occur during process their effects on additively manufactured part’s properties.