Abstract
The Ni3Al-base single crystal superalloy IC6SX used in this work was prepared by spiral grain selection method. And the creep behaviors of the IC6SX alloys was studied systematically under 980°C/205MPa. The microstructure evolution, movement of dislocations, formation of the dislocation networks and dislocation configuration for the alloy during the creep process were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It has been found that the creep performance of the single crystal alloy IC6SX is excellent under the condition of 980°C/205MPa. The results showed the creep mechanism included dislocation slipping and diffusion for Ni3Al-based Single Crystal Superalloy IC6SX under 980°C/205MPa.
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