engleski

INFLUENCE OF HEAT TREATMENT ON THE PROPERTIES OF MARAGING STEEL PRODUCED BY ADDITIVE SELECTIVE LASER MELTING PROCESS

Selective laser melting or SLM is an additive production process which can be used for direct production of prototypes, tools and functional parts. High intensity laser beam is used for melting and joining tiny particles of metal powder and thus it is possible to produce geometrically very complex parts of almost 100 % density whose mechanical properties are comparable to conventionally produced parts. MARAGING steels are high strength steels that are used for the manufacturing of different structural parts but also for the manufacturing of tools due to their excellent combination of mechanical and technological properties such as high strength with very good ductility. Within this research, test samples were made from X3 NiCoMoTi 18‐9‐5 MARAGING steel with SLM additive process. Samples were heat treated with two different set of parameters. On such treated samples microstructure was analyzed and microhardness was tested and compared with samples in as built condition.

additive manufacturing ; SLM ; MARAGING steel ; heat treatment ; microstructure characterization

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