Texture analysis of grain refinement in undercooled Ni_99.45B_0.55

摘要

Recently, it was demonstrated that Ni_99.45B_0.55 undergoes grain refinement by either remelting or dynamic nucleation at two different undercoolings. In this work, we found that the grain refinement by remelting can be characterized by a gradual disappearance of the texture of the initially formed dendrites in the transition regime while the grain refinement by dynamic nucleation is characterized by a sudden disappearance of texture.