This research project aimed to characterize the fatigue behavior of the ductile cast iron EN-GJS-600 in order to evaluate its potential for downsizing in engine construction. Downsizing components in engines can improve fuel economy and reduce CO₂ emissions. We investigated the influence of elevated temperatures and frequencies from 0.005 Hz to 100 Hz on the fatigue behavior of EN-GJS-600. We also examined the influence of dynamic strain aging at different frequencies and temperatures up to 400°C. For investigation of the lifetime under the different test conditions, we modified and used the short time procedure, known as PhyBaL_LITfor total strain control. We found that with temperature increase tests (TIT), we were able to efficiently determine the frequency dependent range of temperatures of dynamic strain aging (Fig. 1)

Publications:

Temperature and frequency influence on the cyclic deformation behavior of EN-GJS-600 (ASTM 80-55-06) ductile cast iron at 0.005 and 5 Hz (Jost et al. 2018)

Temperature dependent cyclic deformation and fatigue life of EN-GJS-600 (ASTM 80-55-06) ductile cast iron (Jost et al. 2017)