Correlation of High Cycle and Low Cycle Fatigue Data for Some HTGR Structural Metals

摘要

An analytical procedure has been evaluated to determine whether low and high cycle fatigue testing techniques may be correlated in the 10 exp 5 cycle region where the data overlap. The procedure, which is based on the use of cyclic stress-strain curves to convert high cycle fatigue stresses to equivalent strains, is shown to be acceptable for Incoloy 800H, Hastelloy X, Type 304 stainless steel and 2 1/4 Cr--1Mo steel in the range of temperature for which data are available. (ERA citation 04:022808)