3D Printing of high melting iron alloys using metal-fused deposition modeling: a comprehensive review

Advancements in additive manufacturing (AM) have allowed for a transition in the manufacturing industry. The ability to print solid metal parts for use in prototypes, custom tooling, and fast replacement parts has driven advancements in the manufacturing sector. Material extrusion additive manufacturing processes such as fused deposition modeling (FDM) is a common AM processes in the world of thermoplastics and it is being developed in the field of metal additive manufacturing. Metal FDM (FDMm) process provides a low cost, customizable, and user-friendly printing experience while still delivering high printing tolerances. While there are many materials that can be printed using FDM technologies, process parameters vary across materials resulting in inconsistent process parameters across the industry. This review paper focuses on the techniques and parameters performed by various researchers for the printing, debinding, and sintering of FDM printed 316L Stainless Steel, 17-4PH Stainless Steel and high melt Iron alloy filaments.