The present paper deals with the investigation and comparison of the influence of scanning strategy on residual stress in the selective laser melting (SLM) process. For the purpose of the experiment, bridge geometry samples were printed by a 3D metal printer, which exhibited tension after cutting from the substrate, slightly bending the samples toward the laser melting direction. Samples were produced with the variation of process parameters and with a change in scanning strategy which plays a major role in stress generation. It was evaluated using the Bridge Curvature Method (BCM) and optical microscopy. At the end, a recommendation was made.

Department of Engineering Materials and Biomaterials Faculty of Mechanical Engineering Silesian University of Technology Gliwice 44 100 Poland

Department of Machining Faculty of Mechanical Engineering Technical University of Ostrava Ostrava 708 00 Czech Republic

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