Abstract
Low cycle fatigue tests were conducted at high temperature. The tests included those cases with and without a strain hold process. The test results were evaluated based on the inelastic behavior around the center hole of the specimens, where the most serious inelastic strain occurred, obtained by the finite element analysis that took into account the inelastic anisotropy of material properties. The number of crack initiation cycles of the tests without a strain hold process and with a compressive hold process correlated with the maximum tensile stress around the hole, while that of all the tests correlated with the frequency-modified strain energy.
