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Low Cycle Fatigue Life Prediction Model of 800H Alloy Based on the Total Strain Energy Density Method
Wei Zhang1, Tao Jiang1, Liqiang Liu1
1College of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin Province, China.
Abstract:
In this paper, a high-temperature low-cycle fatigue life prediction model, based on the total strain energy density method, was established. Considering the influence of the Masing and non-Masing behavior of materials on life prediction, a new life prediction model was obtained by modifying the existing prediction model. With an 800H alloy of the heat transfer tube of a steam generator as the research object, the high-temperature and low-cycle fatigue test was carried out at two temperatures. The results show that the predicted and experimental results are in good agreement, proving the validity of the life prediction model.
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