Aspects of primary creep of a single crystal nickel-base superalloy

Primary tensile creep curve has been measured for a single crystal nickel-base superalloy and microstructure for specimens parallel to (100) crystal plane at different creep times have been observed by means of transmission electron microscopy (TEM). The results show that the 1/2〈110〉 dislocation is activated on the octahedral and cube slip systems in the γ matrix channels and multiplied by dislocation reactions. The dislocation motion must...