Abstract:
An extension of a previously developed method for predicting creep and long-term strength is presented. The method is based on known information about the behavior of a pre-tested specimen (a leader specimen or prototype) under conditions of viscous material failure and is now generalized to the case of exposure to an aggressive environment—hydrogen charging of metallic specimens and structural components with varying degrees of introduced hydrogen. The advantages of the developed method over more complex known models are noted. Results of the calculation of creep and long-term strength for hydrogen-charged specimens made of VT6 alloy at a temperature of $600\,^\circ\text{C}$ are presented. The research results demonstrate that the developed method not only allows for the prediction of creep and long-term strength curves but also enables the optimal planning of experiments to obtain a series of creep curves under constant stress.
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