Dislocation motion in a NI-Fe-based superalloy during creep–rupture beyond 700 °C

A Ni–Fe based superalloys with excellent high temperature mechanical properties and low cost have been evaluated as the promising candidate materials for advanced ultra-supercritical coal-fired power plants. The major concerns with the Ni-Fe-based alloys are the insufficient fundamental deformation mechanisms at intermediate temperatures. In this study, dislocation-based deformation mechanisms were identified carefully in creep ruptured...