Additive manufacturing (AM) is a type of manufacturing technologies whereby the material is added a layer
upon layer to produce a 3D object. Produced 3D parts are applied in such industry sectors as space, aviation, automotive,
building and has excellent future promises. Ourdays, the commercialy promised technique for metal manufacturing is
Direct Metal Laser Sintering (DMLS). Our study concentrated on the investigation of the mechanical properties of
produced17-4H (stainless steel) parts using DMLS. The effect of the DMLS process parameters (laser power, scanning
speed and energy density) on the ultimate strength, yield strength and Young’s modulus was determined. We showed
an evolution of the microstructure. The detected defects were classified. This study allowed to determine the optimal
regimes of DMLS for SS 17-4H and describe mechanical properties of the produced parts as well as helped to show
future possibilities of DMLS development.
Direct Metal Laser Sintering of stainless steel alloy: microstructure and mechanical properties
