Aktivační energie při tváření slitiny FeNi36 za tepla

Abstract

Hrnčiar, M. Hot deformation activation energy of FeNi36 alloy. Ostrava: Department of material forming, VŠB- Technical University of Ostrava, 2020. 40 s. Bachelor thesis, head: Ing. Stanislav Rusz, Ph.D. The bachelor thesis deals with determination of hot deformation activation energy of FeNi36 alloy. In theory, we deal with stress-strain curves, calculation of activation energy and uniaxial compression test. Uniaxial compression tests were performed at strain rates of 0,001; 0,01;0,3 and 10 s-1 and deformation temperature of 800, 900, 1000, 1120 and 1250 °C using the Gleeble plastometer 3800. For calculation of activation energy was used specific software ENERGY 4.0. Thanks to calculated constants, it was possible to determine effect of the initial grain on the magnitude of maximum deformation resistance and deformation.