Creep-rupture behavior of a nickel-based single crystal superalloy

A first generation single crystal superalloy was employed to research the high temperature creep behavior. Scanning electron microscope (SEM), transmission electron microscope (TEM) are used. The main results are summarized below: There are two mechanisms for the steady creep. The first one is superlattice dislocation cutting γ' precipitates, which is the main mechanism for 1000°C creep behavior. In this case, the creep rate increases when the...