The influence of melt flow on grain structure of tin and its alloys produced by ultrafast quenching from the melt

The results on the grain structure and texture of tin and tin-based foils produced by ultrafast quenching from the melt are presented in this work. The formation of fine equiaxed and large grains elongated along the spreading direction of the foil was observed. Detailed studies of subgrain structure showed that the crystallographic orientation of elongated grains changes monotonically within the grain. It can be assumed that the reason for the change of crystallographic orientation is the deformation of solidified material. The deformation is caused by the viscous force of undercooled melt which moves above the crystallization front in the direction of the foil spreading. (paper)