Abstract
Fully reversed constant amplitude creep-fatigue tests, so called fast-fast (PP) and slow-fast (CP) tests, were conducted on 316LC austenitic stainless steel thin-walled tubular specimens at 1023K in air under proportional push-pull and cyclic torsion loadings. The experimental data were analyzed based on the strainrange partitioning concept, and the partitioned equivalent inelastic strain range (Δε)_<pp> or (Δε)_<cp>, its corresponding life N_<pp> or N_<cp> and the value of multiaxiality factor MF at the peak equivalent stress was determined for each of them. The effect of stress state on the partitioned inelastic strain range versus life relations was examined by comparing the results obtained in the present study with those for the tubular specimens under push-pull or cyclic torsion loading.
