Crystallization mechanisms of joule‐heating‐induced crystallization

Abstract In Joule‐heating‐induced crystallization, solid‐to‐solid or liquid‐to‐solid phase transformation could occur. It was found that novel physical phenomena that randomly nucleated liquid seeds, followed by rapid solidification in an amorphous matrix, during the Joule‐heating‐up period play an important role especially in liquid‐to‐solid transformation. Under some processing conditions, super‐grains sized 6–8 μm were produced by the lateral growth from the initial seeds, without any artificially control.