The dislocation arrangement was studied using transmission electron microscopy in specimens of polycrystalline INCONEL 713 LC superalloy cyclically strained up to failure with constant total strain amplitudes at 300, 773, 973 and 1073K. Planar dislocation arrangements in the form of bands parallel to the {111} planes were observed in specimens cycled at all the temperatures. The bands showed up as thin slabs of high dislocation density cutting both the γ channels and γ′ precipitates. Ladder-like bands were observed at room temperature.

Inhomogeneous Dislocation Structure in Fatigued Inconel 713LC Superalloy at Room and Elevated Temperatures. M.Petrenec, K.Obrtlík, J.Polák: Materials Science and Engineering A, 2005, 400-401, 485-8