Tool Material Behavior at Elevated Temperatures

Abstract

Abstract In this article experimentally obtained data related to material mechanical properties, material behavior at elevated temperatures and numerical modeling of material creep responses are presented. Tensile tests at different elevated temperatures are carried out, and for some of these temperatures one-dimensional short time creep tests for different constant stresses are made. Before presented experimental investigations the used materials were not treated. The curves representing specimen strain elongation are also presented. The materials under consideration are 56NiCrMoV7 (1.2714) and X153CrMoV12 (1.2379). Keywords: Burgers modelConstitutive lawElevated temperatureFinite element modellingHigh-temperature extensometerMechanical propertiesNumerical modellingRheological modelShort-time creepStress–strain curvesTesting machineTool steelUniaxial test1.2379 steel1.2714 steel ACKNOWLEDGMENTS The research presented in this article was realized within the scientific project 069-0691736-1737 "Numerical analysis of structural response for specific service conditions," financially supported by the Ministry of Science, Education, and Sport of the Republic of Croatia. The authors would like to express their deep gratitude to the firm Gorenje Orodjarna, d.o.o., Slovenia, for their testing material donation. Also, the authors would like to thank the participants from the Material Testing Laboratory of Department of Materials of Faculty of Engineering, Rijeka, for their determination of testing material composition.