Cyclic plasticity modeling of nickel-based superalloy Inconel 718 under multi-axial thermo-mechanical fatigue loading conditions

J Sun, H Yuan - International Journal of Fatigue, 2019 - Elsevier
High temperature components work mainly under thermo-mechanical loading conditions.
Recent investigations reveal significant effects of the thermo-mechanical coupling on
material behavior. In the present work, extensive experiments are performed for nickel-
based superalloy Inconel 718 under both isothermal and thermo-mechanical loading
conditions. Within the framework of the Ohno-Wang cyclic plasticity, a modified constitutive
model is suggested to describe cyclic hardening/softening, non-proportional hardening, non …