Experimental and numerical creep-fatigue study of Type 316 stainless steel failure under high temperature LCF loading condition with different hold time

Fully-reversed, strain-controlled isothermal tests were conducted on the Type 316FR at 650 degrees C for the strain ranges of Delta epsilon = +/- 0.4%, +/- 0.8%, +/- 1.0% and +/- 1.2%. A constitutive model based on isotropic and nonlinear kinematic hardening rules was used to replicate numerically the cyclic structural behaviour of the material until stabilisation. Finally to demonstrate the damage initiation and the damage evolution, a hysteresis energy-based phenomenological model was implemented in a user subroutine combined with a creep damage model based on the time-fraction law to replicate the experimental results. (C) 2015 Elsevier Ltd. All rights reserved.