Assessment of fatigue strength taking cyclical hardening and softening processes into account – experimental studies
The aim of the project was to use experimental studies and advanced material models for in depth analysis of fatigue behavior in the elastic-plastic range, taking into account hardening and softening processes, and to record changes in microstructure due to fatigue processes.
Stress-strain hysteresis from fatigue tests on steel X6CrNiNb1810 controlled by total strain (left) and parameters for modeling cyclic deformation behavior (right)
The research was carried out as part of a project funded by the Federal Ministry of Economic Affairs and Energy (BMWi) in cooperation with the Fraunhofer Institute for Mechanics of Materials (IWM) in Freiburg.
publications
M. Smaga, P. Starke, D. Eifler, J. Fingerhuth, B. Nieweg, D. Siegele: Bewertung der Ermüdungsfestigkeit
metastabiler austenitischer Stähle unter Berücksichtigung zyklischer Ver- und Entfestigungsvorgänge
Werkstoffprüfung (2012)
A. Sorich, M. Smaga, D. Eifler: Influence of loading conditions of the cyclic deformation behaviour and
phase transformation of the austenitic stainless steel AISI 347 at ambient temperature and 300°C
Proceedings LCF7 (2013)