On High- and Very High Cycle Fatigue of Metals and Alloys at Axial Loading

Автор: Завойчинская Э.Б.
Сборник: Structural Integrity
Том: 24
Год издания: 2022
Издательство: Springer Nature
Местоположение издательства: Switzerland
Первая страница: 211
Последняя страница: 218
DOI: 10.1007/978-3-030-97822-8_24
Аннотация: There are discussed Mughrabi’s diagram and Shanyavskii’s bifurcation fatigue curve. Here is shown that the authors represent on one graph the areas of different fatigue curves at different frequencies of uniaxial loading. The well-known mechanisms of microfracture initiation are considered. They are ductile and brittle failure mechanisms and they occur at loading with any frequency. The failure stress amplitude is a function of three variables: number of cycles, loading frequency and temperature. For the nickel alloy EI437B, 9-12% chromium martensitic steel and titanium alloy VT3-1 the fatigue properties of which do not depend on frequency, the areas of brittle micro-, meso- and macrodefect evolution and fatigue curves on defect levels are constructed on the scale-structural fatigue model, they describe the experimental data satisfactorily. The basic characteristics of the model for materials with frequency-dependent fatigue properties are determined as a function of the loading frequency.
Добавил в систему: Завойчинская Элеонора Борисовна

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