“…Microstructure stability of these alloys is essential, in order to maintain their mechanical properties for a long service time, as the components used in an A-USC power plant are employed at high temperatures [14,15]. Therefore, the optimization of the heat treatment process, following cold rolling, has been performed, and the microstructure, microindention, hardness and strength evolution of a new Ni-Fe superalloy were studied, following long term thermal exposure at 750°C.…”