SEDL / STP / STP338-EB / STP44462S

Effect of Stress State on High-Temperature Low-Cycle Fatigue

Kennedy, C. R.
operated for the U. S. Atomic Energy Commission by the Union Carbide Corp., Oak Ridge National Laboratory, Oak Ridge, Tenn.

Pages: 13    Published: Jan 1963

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Abstract

A study of the behavior of Inconel at 1500 F under realistic dynamic stress states has been made to evaluate critically the present criteria used to solve low-cycle fatigue problems and to demonstrate their applicability for the more complex situations. The relative agreement between the static complex stress-creep-rupture results and the low-cycle fatigue data is demonstrated. From the relationships developed for static complex stress-creep-rupture data, it is shown that the magnitudes of the effects of stress state and frequency on low-cycle fatigue can be determined.