Publications by authors named "Vlastimil Vodarek"
This paper summarizes the results of investigations into heterogeneous P23/P91 welds after long-term creep exposure at temperatures of 500, 550 and 600 °C. Two variants of welds were studied: In Weld A, the filler material corresponded to P91 steel, while in Weld B, the chemical composition of the consumable material matched P23 steel. The creep rupture strength values of Weld A exceeded those of Weld B at all testing temperatures.
View Article and Find Full Text PDFIt is not realistic to optimize the roll pass design of profile rolling mills, which typically roll hundreds of profiles, using physical modelling or operational rolling. The use of reliable models of microstructure evolution is preferable here. Based on the mathematical equations describing the microstructure evolution during hot rolling, a modified microstructure evolution model was presented that better accounts for the influence of strain-induced precipitation (SIP) on the kinetics of static recrystallization.
View Article and Find Full Text PDFArticle Synopsis
- The paper investigates the creation and properties of graphite/TiO2 nanocomposites aimed at fighting bacterial infections.
- Multiple ratios of TiO2 nanoparticles were combined with graphite through thermal hydrolysis and characterized using advanced techniques like X-ray powder diffraction and microscopy.
- The antibacterial effectiveness was tested against several bacterial strains, showing significant activity, especially against P. aeruginosa after exposure to light for 180 minutes.