INVESTIGATION OF THE EFFECT OF HEAT TREATMENT CONDITIONS ON HARDNESS PROPERTIES OF MARAGING STEELS PRODUCED BY ADDITIVE MANUFACTURING

Additive Manufacturing (AM) technology produces parts in layers and offers design freedom (3D design), zero waste, reduced expensive tool material requirements, improved mechanical properties. Maraging steels have superior strength toughness with adequate ductility. The effect of aging process parameters on the final properties AM is enormous. In this study, effects heat treatment atmospheres temperatures to direct metal laser sintered (DMLS) maraging were examined. Aging was applied different atmospheres(Ar/H2 air) temperatures(4900C,5200C,5500C,5800C). SEM XRD devices used examine microstructure properties, Vickers hardness device determine When results are evaluated, it observed that increased temperature after 490 0C adversely affected value. analysis showed martensite austenite phases air Ar/H2 atmospheres. According images, can be said traces melt pool remaining from disappear increasing general.