Abstract
Creep–fatigue tests of low-carbon and medium-nitrogen type 316 stainless steel including elastic follow-up were carried out and the effect of elastic follow-up on the creep–fatigue life was discussed. Crack growth was observed throughout the life and it was faster in elastic follow-up tests than in strain-controlled tests. Creep–fatigue life prediction was made by estimating inelastic strain behavior during displacement holding. The ductility exhaustion rule gave good life prediction, whereas the time fraction rule was non-conservative as the failure life became longer. The ductility exhaustion rule is recommended for estimating creep damage under conditions of creep–fatigue loading with elastic follow-up.
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