1009 Effect of Processing Condition on Mechanical Properties of Maraging Steel by Selective Laser Melting

In this work, the influence of processing condition on relative density and mechanical properties of specimens prepared by Selective Laser Melting (SLM) technique using 18-Ni maraging steel powder was investigated. The results show that it is necessary to control laser energy density of about 65-80 J/mm^3 to obtain SLM specimens with relative density higher than 99.9%. In addition, it was confirmed that mechanical properties of dense SLM specimens were less influenced by building direction on the base plate.