KUČERA Pavel VSB - Technical University of Ostrava

Spoluautoři MAZANCOVÁ Eva

34CrMo4 steel is commonly used material for high strength applications such as shafts, forgings and high pressure steel cylinders. Mentioned steel is used in variety of microalloying by niobium, titanium, vanadium and nitrogen, respectively of those elements combinations. In presented paper three different heats of mentioned steel were studied. All heats were microalloyed by nitrogen and vanadium. Three heat treatment modes were applied. The first mode was based on heating at 700 °C, subsequently quenched and tempered at 470 °C. The second mode was the material heated at 890 °C and control cooling process followed. The third mode was similar to the second mode with differences in control cooling process temperatures. Microstructural investigation and mechanical properties testing were part of solution.