Prediction of High-Temperature Long-Term Strength of Materials

The authors present a method for predicting the long-term deformation of materials based on the base diagram concept. The long-term strength calculation of steels 18Cr–12Ni–Mo and 21Cr–32Ni–Ti–Al for different specified stress and temperature values showed the efficiency of its defining relations. The advantage this approach has over the most common parametric methods such as the Larson–Miller, Orr–Sherby–Dorn, Manson–Sakkop, and Trunin parameters is shown.