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This study focuses on the possibility of controlling the morphology, phase-structural transformations, shape and mechanical features of a nano ceramic-polymer matrix by adding nano-titanium dioxide (TiO2) to the polymer during a selective laser sintering process. 3D parts were manufcatured from dissimilar polymers and nano-titania powder compositions with different volume ratios. Evaluations of the microstructural characteristics of the 3D samples were performed using optical and scanning electron microscopy (SEM) and x-ray analysis. SEM indicated a heterogeneous distribution of nano-titania in the polymer matrix. The x-ray patterns confirmed the presence of the original phase (TiO2) with some changes, which is useful for biomedical applications. Heating the 3D parts for approximately 30 additional minutes in the oven in the range of 50 °C–250 °C allowed us to reveal the conditions necessary for changing the porosity of the ceramic–polymer matrix, without requiring a polymer binder or titania framework fixing.

The paper demonstrates the results of microstructure, microhardness and elasticity analysis of the functionally graded (FG) specimens with multilayer structure created of stainless steel and aluminium bronze powder materials via direct energy deposition (DED) laser technology. Increase of microhardness (up to 266 HV) and Young’s modulus of elasticity (up to 43.2 GPa) along with growth of the dendritic crystals in the gradient structures are observed. The results of numerical simulation demonstrate stress distribution in FG Cu-Fe system structure with a sharp interface. The results of the research can be used for 3D-printing of the aerospace industry details created from two kinds of material with rather different thermomechanical properties.