Možnosti multimateriálového tisku technologiíí DED

Abstract

This master’s thesis deals with the possibilities of multi-material printing using Directed Energy Deposition technology, with a focus on wire-laser DED. The aim of the thesis was to verify the formation and behaviour of a multi-material joint between AISI 316L stainless steel and AISI H11 tool steel. The theoretical part describes the principles of metal additive manufacturing, DED technology, process parameters, typical defects and the properties of the selected materials. The experimental part was carried out on a Meltio M600 machine. The printed semi-finished parts were subsequently heat treated, sectioned and evaluated by tensile testing, macrostructural and microstructural analysis, microhardness measurement, fractography and X-ray diffraction analysis. The results showed that the 316L/H11 material combination can be produced by wire-laser DED as a cohesive multi-material joint. In most specimens with the interface oriented perpendicular to the tensile direction, failure did not occur directly in the interface region. However, technological difficulties during H11 printing, local defects in the transition region and a significant hardness difference between both materials were observed.