The development of cells during the solidification of a dilute Pb-Sb alloy

Multiphase solidification in multicomponent alloys

“…Also the 3D topologic anisotropy of a lamellar eutectic interface in conjunction with the crystalline anisotropy of the Al 2 Cu-phase may play the decisive role. The existence of elongated cells as precursors to regular cells has been observed for monophase solidification by Morris and Winegard [105] for binary Pb-Sb alloys. For the [110] axis of the growing solid solution aligned in the direction of growth, elongated cells were reported, while for [100] and [111] orientations regular cells formed directly.…”

Extended structural defects in ?-Hgl2 single crystals

“…26a and b, respectively, on (0 0 1) faces, without etching, as deep and wide straight grooves ending inside the crystal. The boundaries were formed during growing the crystal and transformed in open valleys by accumulating impurities carried by the macrosteps stopping in the boundaries as a result of the breakdown of the planar growth interface at the grain boundary [159]. The dislocation walls (2) are mostly formed by edge dislocations lying in [1 1 0] planes, but some of them are screw (or have a mixed character) as is indicated by the few river lines produced by the cleavage and by the form of the etch pits.…”

Phase-field investigation on the non-equilibrium interface dynamics of rapid alloy solidification

“…The hexagonal shapes of the cells with straight cell boundaries were presumed to be a result of lateral growth near the cell tip during the decantation of the melt. Cross-sections of the cells further behind the tips were circular [5]. Transverse segregation of impurities in cell structures was also detected.…”