Plastic Strain Localization in Superalloy Single Crystals.

Modeling fluid flow in three-dimensional single crystal dendritic structures

“…Nonetheless, microstructural investigations reveal good correlation of both primary and secondary dendrite arm spacings with spacings expected from thermal gradient and withdrawal rate models [27][28][29][30]. In addition, isolated porosity was identified with a volume fraction in the range typical of single crystal nickel-base castings [31][32][33]. Additional details of the reconstruction and initial characterization of resulting structures have been presented elsewhere [34][35][36].…”

Phenomenological modeling of the effect of specimen thickness on the creep response of Ni-based superalloy single crystals

“…The undeformed microstructure was found to contain microvoids, which had formed during the solidification and homogenization processes, as also seen in Refs. [31,32]. The evolution of porosity depends on the stress state, as characterized by the stress triaxiality, v, and the Lode parameter, L (see Ref.…”